lintel product selector

87

Lintel Product Selector

Catnic

December 2008

December 2008

Cl/Sfb

UniclassL325:P4142

EPICF631:X442

(31.9) Hh2

87 87

Catnic is a Corus Group company. Furtherinformation can be found on the Corus website atwww.corusgroup.com

Care has been taken to ensure that this informationis accurate, but Corus Group plc, and itssubsidiaries, does not accept responsibility orliability for errors or information which is found tobe misleading.

This publication was printed by a Corus approvedsupplier that complies with ISO 9001, ISO 14001and OHSAS 18001 accreditation. Paper used isRegency Satin, which is manufactured from ECF(Elemental Chlorine Free) pulp sourced fromcertified or well managed forests and plantations,inks used are vegetable based.

Copyright 2008 Corus

www.catnic.com

CatnicPontypandy Industrial EstateCaerphillyCF83 3GLTelephone 029 2033 7900Facsimile 029 2086 7796

C03:30000:UK:11/2008

PDA8753/05

Photographs are supplied courtesy of Andersen Windows/Black Millwork,Barrington Homes, Taylor Wimpy PLC, Williams Lester Architects

85

For more information aboutthese products, please callCatnic on 029 2033 7900 for a brochure

LintelsPioneers of the steel lintel for morethan three generations with areputation for superior quality,reliability and backed by excellencein service.

Steel LintelsSpecial LintelsStainless Steel Lintels Free design service for bespoke feature lintelsFree scheduling service

SteelworkA selection of steelwork beams,columns and channels for whenloading conditions exceed ourstandard range of lintels

Universal beams Universal columnsParallel flange channels

Steel Plasterer’s BeadsPrecision engineered and simple touse to create, edges, corners andjoints that are resistant to chipping,cracking and impact damage.

Galvanised steel plaster and render beadsStainless steel plaster and render beads

PVC-U Plasterer’s Beads Light, rigid, non-corrosive, andeasy to use material, that offers a cost-effective way to create,edges, corners and joints that are resistant to chipping, cracking and impact damage.

Plaster and render beads

Expanded MetalEasy to use, versatile and perfectlyformed expanded metal productsbenefit from our long experience ofusing steel in construction.

Metal LathCoil MeshArch formers

Wall Starter KitsSTRONGHOLD Wall Starter Kitsare a simple yet effective systemfor tying new masonry walls toexisting walls.

Stainless steel wall starter kitsoffering superb corrosionresistance.PVC Coated wall starter kitsgalvanized steel for durablecorrosion resistance.

Cavity Wall TiesHigh quality stainless steel wall tiesfor ease of use and a long life.

Ties for brick to blockconstructionTies for brick to timberconstruction

QwikpostErecting a new boundary or repairing a gale-damaged fencehas never been easier with the Catnic's durable andaffordable fence support systems.

Garden fence post spikesRepair spikesBolt-down supportsConcrete-in postsPost extendersArris brackets, U-clips and Z- clips

- much more than just Lintels...

Contents

1

Catnic - The Name to Build a Reputation On

Technically Superior Leaders in Technical Innovation 4Products Regulatory authorities approval 5

Corrosion resistance 6Thermal performance 7Major features of Catnic lintels 8

Service Help when you need it 10Technical Service Package 11

Specification Guide How to select a lintel 13Product Selector 14Specification Clauses 16

Steel Lintels Cavity Wall Lintels 19Extreme Load Lintels 30Closed Eaves Lintels 33Timber Frame Lintels 35External Solid Wall Lintels 37Single Leaf Wall Lintels 40Internal Partition & Loadbearing Lintels 42Stainless Steel Lintels 45Steelwork 46

Special Lintels Standard Arch Lintels 48Bespoke Lintels 49

Accessories Soffit Cladding 65Arch Centres 66Stop Ends 67Weep Vents 68External Plaster Key 69

Installation Installing a cavity wall lintel 71Installing a lintel supporting concrete floors 73Installing a timber frame lintel 74

Technical Specifications Where to use a separate DPC 76Quality Assurance 77Technical Information 78The Environment 79Guide to safe storage and handling 80Material Specification 81Glossary of technical terms 82

32

Catnic has pioneered the steel lintelfor more than three generations anddesigns, manufactures and suppliesthe construction industry withtechnically superior products

Corus is Europe's second largest steelproducer with annual revenues ofaround £12 billion and a crude steelproduction of over 20 million tonnes,primarily in the UK and the Netherlands

Catnic was the First:

• To develop the steel lintel in the UKand the first to gain BBA Approval

• Manufacturer to employ therevolutionary two-part corrosionprotection system on its lintel as astandard offering

• To gain both BBA approval and thecoveted Kitemark to BS 5977

• To incorporate a built-in Damp ProofCourse into its lintels

• To provide a built-in plaster key

Far from just leading, Catnic in fact hasworked over the years with the BSI toestablish the standards for lintels in thiscountry, and continues to develop andinvest in improving on these standardswith its extensive range of products andunique features.

Corus comprises three operatingDivisions, Strip Products, Long Productsand Distribution & Building Systems andhas a global network of sales officesand service centres, employing around42,000 people worldwide.

Corus is a leading supplier to many ofthe most demanding markets around the world including construction,automotive, packaging, mechanical and electrical engineering, metal goods,and oil & gas. With innovation andcontinuous improvement at the heart ofits business performance, Corus aimsto create value by offering adifferentiated product range supportedby unrivalled customer service.

Corus is a subsidiary of Tata Steel, theworld's sixth largest steel producer. Witha combined presence in nearly 50countries, the Tata Steel Group includingCorus, Tata Steel Thailand and NatSteelAsia, has approximately 80,000employees across five continents and acrude steel production capacity of over 28 million tonnes.

Introduction to Catnic & Corus

Technically superior productsCatnic is committed to innovation and constantimprovement to meet the changes in building regulations

Introduction Leaders in technical innovation 4Regulatory authorities approval 5Corrosion resistance 6Thermal performance 7Major features of Catnic lintels 8

54

Our rigid adherence to qualitycontrol and compliance is yourguarantee of technical superiority

Catnic lintels have gained the approval of the regulatoryauthorities both in the domestic and internationalmarkets. Such wide-spread comprehensive approval isan assurance to designers, specifiers and builders of thereliability and state-of-the art quality of the Catnic range

Catnic lintels are designed, manufactured and tested inaccordance with BS EN 845-2:2003

Leaders in Technical Innovation

Regulatory authorities approval

Catnic’s excellence isinternationally recognised

Material SpecificationCatnic’s Standard lintels aremanufactured from high quality gradegalvanised steel to BS EN 10327:2004DX51D & Z275, with a black colouredpolyester resin finish.

Catnic’s CXL lintels and Special lintelsare manufactured from structural gradesteel plate of grade S275 to

BS EN10025-2:2004 and hot-dipgalvanised after manufacture to BS EN ISO1461:1999.

Catnic’s Stainless steel lintels aremanufactured from Austenitic StainlessSteel (chrome nickel alloys) grade 1.4301(304) and do not require any furthercorrosion protection.

QualityCatnic are committed to quality controland is a BSI registered company withquality management systems inaccordance BS EN ISO 9001: 2000.

Thermal Performance / InsulationAll Catnic lintels for traditional externalcavity walls are supplied fully insulated.Insulation extends continuously alongthe full length of the lintel, leaving nopotential thermal bridges, and cannot be dislodged.

Structural PerformanceThe structural data published in theloading tables included in this technicalguide, was achieved in accordance with the requirements of BS 5977: Part 2:1983 and BS EN 845-2.2003.

Independent TestingExtensive testing was undertaken at the following test houses:• The University of Wales,

School of Engineering• The University of Glamorgan,

Construction Centre• Ceram Building Technology,

Stoke-on-Trent

Fire TestingCatnic lintels have been independentlytested in accordance with the relevantparts of BS476, Methods of Determinationof the Fire Resistance of LoadbearingElements of Construction.

Environment & SustainabilityCatnic are committed to protecting theenvironment by minimising the impact ofour operations and our products throughthe adoption of sustainable practices andthrough continuous improvement inenvironmental performance and control.Further details can be found on page 79.

073

Further details can be found in page 77 and full reports of relevant tests are availableon request from the Catnic Technical Services Department on 029 2033 7900.

BSI KitemarkCatnic steel lintels have been awardedthe BSI Kitemark license numberKM07234.

BBA CertificationCatnic steel lintels are certified by theBritish Board of Agrément undercertificate number 91/2638.

National House-Building Council(NHBC) Catnic steel lintels meet NHBCtechnical requirements.

Housing Association Property Mutual(HAPM)Catnic steel lintels achieve 35+ yearslife to first maintenance to HAPMrequirements.

Local Authority Building ControlCatnic steel lintels are compliant withcurrent UK Building Regulations andtherefore meet the requirements of theLABC in England and Wales.

Fully Part L CompliantCatnic steel lintels comply with Parts L1& L2 of the Building RegulationsApproved Documents.

BS 5977LICENCE No. KM07234

‘Partial’ (or ‘Full’ Fill)Insulation

Inside face of windowhead to overlap insideface of outer wall by 30mm minimum

Lightweight plaster orplasterboard

Sealant required to front andback of window head

30 Min.

‘Partial’ (or ‘Full’ Fill)Insulation

Inside face of windowhead to overlap insideface of outer wall by 30mm minimum

30 Min.

Lightweight plaster orplasterboard

Sealant required to front andback of window head

76

Corrosion resistance Thermal performanceDuplex Corrosion Protection

Initially, Catnic standard lintels are manufactured from hot-dipped galvanised steel to BS EN 10327: 2004 of grade DX51Dplus coating type Z275.

A coating of thermal setting polyester powder is then applied byan electrostatic process, further protecting the lintel. Hightemperature curing then produces a tough durable surface highlyresistant to impact, abrasion and damage during rough on-sitehandling. This double method of protection gives Catnic lintelsinherent benefits over those offered by other manufacturers usingthe more traditional pre or postgalvanised steel techniques.

Both these processes rely on just a simple coating of zinc toprovide cathodic protection. The zinc protects the steel but isitself liable to rust with aqueous alkaline solutions leaching fromthe building fabric and therefore corrode. The famous blackcoating makes Catnic lintels instantly recognisable and providesan effective barrier against moisture or chemical attack leachedfrom the mortar and masonry.

Hot-Dipped Post Galvanised

All Catnic CXL lintels and fabricated lintels are fully submergedin a zinc bath after manufacture, to BS EN ISO 1461: 1999, fully protecting every surface, cut edge and weld with ametallurgically bonded zinc coating. The post-galvanisationprovides protection from corrosion and eliminates the need for on-site painting or maintenance. Hot-dipped Post-Galvanised lintels require a separate damp proof course,regardless of profile shape.

Stainless Steel Lintels

Catnic stainless steel lintels ensure a high degree of corrosion resistance without requiring additional protection.Manufactured from Austenitic Stainless Steel (chrome nickelalloys) grade 1.4301 (304) to BS EN10088-2-1.4301, they do not require any further corrosion protection and offerexcellent corrosion resistance combined with high ductility and strength making it suitable for schools, hospitals andparticularly aggressive environments. Stainless Steel lintelsincorporating our unique tray profile do not require a separatedamp proof course.

Open Back Lintel - Design Features

Catnic’s standard range of ‘open back’lintels are available with and withoutperforated steel base plates. The uniquedesign of the company’s ‘open back’lintels incorporate a perforated steelbase plate to help minimise coldbridging without affecting structuralperformance.

Catnic undertook its own assessmentusing a ‘two dimensional steady stateheat flow’ analysis on the full standardrange of cavity wall perforated lintelswith the window frame overlapping thecavity by 30mm.

The results confirmed that the criticaleffective conductivity value is notexceeded and that Catnic’s standard

lintels offer complete compliance withthe requirements of the ApprovedDocuments. For designs incorporatinglintels with unperforated base plates,suitable insulated lining is required.

For all applications a sealant should beprovided at front and back of thewindow frame to improve air tightness.

Fully-insulated, reducing heat lossCatnic Cavity wall lintels are suppliedfully insulated. To further minimise anythermal bridging the lintels are designedwithout a base plate or with aperforated base plate.

The combination of a fully insulatedlintel in conjunction with no base plateor perforated base plate ensures thatCatnic Lintels comply with thenecessary requirements of Part L of theBuilding Reguilations 2006 where wallsmust have a U value of no more than0.35 W/mK.

Catnic standard external wall lintelshave a linear thermal transmittance Ψ value of less than 0.21 W/mK.

Unique DesignThe perforated base plate pattern onthe underside of the lintel, helps tominimize any potential cold bridge pathwithout compromising its structuralstrength or integrity.

AccessoriesAccessories such as the Catnic CavityWeep Vent, used at 450mm centresabove the lintel will vent interstitialcondensation which is sometimesassociated with cold bridging.

Catnic design features that help reduce cold bridging by offering the following specific benefits

Built-in DPC profile

Galvanised Steel

Steel

Continuous insulation

Duplex coating

Plaster key

Post Galvanised Steel

Steel

Open Back Lintels

Stainless Steel


Plaster key

Open Back Lintels


Suitability of cavity wall lintels to meet the stipulatedthermal performance requirements of Part L1 & L2 of the Building Regulations Approved Document

Open Back without base plate Requirement: No restrictions on usage

Open Back with a perforated base plate Requirement: Effective conductivity value of the steel must

not exceed 30W/mK

CG style lintel CH & CX style lintel

98

Major features of Catnic lintels

Leading with ServiceCatnic is committed to delivering the mostcomprehensive service to architects, designers andengineers to meet any requirement for any project

Service Help where you need it 10Technical Service Package 11

Duplex Corrosion Protection System

Many Catnic lintels employ not just one but two methods of protectionagainst corrosive attack: The unique,sophisticated Duplex CorrosionProtection system.

Manufactured from hot-dippedgalvanised steel to BS EN 10327: 2004of grade DX51D & Z275 with the addedprotection of a black coloured polyesterresin finish. The protection systemcomplies fully with the chemical andphysical test requirements outlined inTable 2 of BS 5977:PART 2:1983 andtable C.1 of BS EN845-2:2003 for lintelseffectively having their own built-inDamp Proof Course (DPC).

The famous black coating makesCatnic lintels instantly recognisable andprovides an effective barrier againstmoisture or chemical attack leachedfrom the mortar and masonry.

Built-in Damp Proof CourseMany Catnic lintels offer a

unique profile shape that combinewith the unique Duplex CorrosionProtection or Stainless Steel to createan effective barrier that acts as a built-in DPC meaning any water penetratinginto the cavity automatically transfersacross the sloping face of the lintel and is disposed of externally.

The ease of brick laying directly ontoa solid surface eliminates the risk ofdamage while installing, or anypossibility of incorrectly installing, aseparate DPC membrane. The result is an aesthetically pleasing, clean-linefinish above the window head thatsaves time and cost. In areas ofsheltered to medium exposed weatherconditions there is no need to install a separate DPC.*

Integral Plaster KeyMany Catnic lintels come

complete with an integral plasterkey that avoid the hazards of workingwith a mesh key. In addition the uniquedesign of the perforated base plates onCH/CX lintels minimise cold bridgingwithout affecting the structuralperformance.

Continuous InsulationMany Catnic lintels are supplied

with CFC & HCFC free insulationmaximising their thermal efficiency andcompliance with Part L.

The insulation is accurately shaped to optimise the thermal performanceextending continuously along the fulllength of the lintel and cannot bedislodged, leaving no potential ‘cold spots’.

Catnic lintels offer many benefits to specifiers and buildersthrough a combination of their design, thermal efficiency

and corrosion protection. These major features ensure that Catnic lintels are widely used, and respected,

throughout the building industry


Galvanised Steel

Steel


Duplex coating

Plaster key

Open Back Lintels

* NHBC & Zurich Municipal technical requirementsdemand a separate DPC for severe exposure zonesas determined by BS 8104. For further details referto Where to use a Separate DPC on page 76.

9

Leading with ServiceCatnic is committed to delivering the mostcomprehensive service to architects, designers andengineers to meet any requirement for any project

Service Help when you need it 10Technical Service Package 11

11

Catnic is committed to providing thebuilding industry with new and improvedproducts, borne from investment indesign and manufacturing technologies.

Catnic means:• The strongest brand in the industry• A partnership approach to the way we

work• Dedicated haulier - liveried lorries• Servicing builders, architects,

specifiers and merchants • Committed to both national and

independent merchants• Investment in plant and machinery and

the latest technologies• Continuously dedicated to research

and development of the industry andour product offering

Catnic’s sales and technical teams arededicated to matching the quality of ourproducts with the excellence of ourservice, from the professional voice atthe end of the telephone to our on-siteconsultation.

Full service support for customersCatnic has been at the forefront of linteldesign for over 35 years. Our reputationfor exceptional quality and technicalexpertise has ensured customerssatisfaction and loyalty in the productsand services that we offer.

Catnic’s team:• Are professional and experienced• Are extensively trained• Have comprehensive product and

industry knowledge• Have a committed parent company

who are Investors in People – Corus.

10

Help When You Need It Fully committed to providingfirst class service support

The Catnic service package includes:• Experienced and dedicated team of

lintel sales representatives• Fully trained, professional internal

customer support team for all yourneeds; from placing orders, toenquiring about prices or deliveries

• Comprehensive range of back-upliterature

• On-line help via Catnic.com• CAD details available on-line providing

instant access to lintel drawings

• Technical enquiry forms toaccompany your drawings ensuringnecessary information is received andturned around in a timely manner

• On-site sales and technical supportwhen required

• Technical hotline for all queries• Dedicated hauliers for all your deliveries• Consultation at every stage of your job• Lintel scheduling and specification

via CLASS

• Next day delivery available onselected items

• Extensive range of standard andbespoke lintels

Technical supportExperienced engineers qualified inconstruction enable Catnic to offer anadvisory service to anyone engaged onbuilding projects, regardless of size,from a private house extension, to amajor housing development orcommercial building.

Free scheduling serviceCLASS – The Catnic Lintel AdvancedScheduling System is the mostcomprehensive, enviable lintelscheduling service available. Oneconcise document leaves no room for confusion or misunderstanding.CLASS clearly provides:• A description of each lintel, its

location, price and delivery time• Guaranteed structural adequacy• A site summary

To access the benefits of CLASS free of charge, simply send your projectdrawings (dimensional plans, sectionsand elevations), floor layout and roofcarcass, (along with a copy of thetechnical enquiry form in the back of this Product Selector) to our Technical team.

Design service for bespoke lintelsIn addition to its standard range, Catnicdesign and manufacture a huge range of ‘specials’. The bespoke range isdesigned and fabricated to satisfyfeatures such as long spans, chamferedbrickwork, reduced toe lintels for cantbricks, arched openings and otherapplications where non-standardconstruction is utilised. For furtherinformation please turn to page 46 of this guide.

Telephone Technical Services on

029 2033 7900

Unsurpassed technical service and support fromour experienced, helpful and friendly team

Technical Service Package

Terms and conditions

apply

NEXTDAYDELIVERYAVAILABLE

13 1312

How to Select a Lintel

You need to know 3 things:1 The wall construction2 The length of lintel required3 The load to be applied on the lintel

Guide to SpecificationCatnic is committed to assist you in selecting the right Catnic product for the job

Specification How to select a lintel 13Product Selector 14Specification Clauses 16

Applied LoadAll lintels are designed to carry aspecific safe working load (SWL).

If you are not skilled in the methodof load assessment, or the load hasnot been supplied to you by a thirdparty, for advice please contact:

Lintel LengthThe length of lintel required iscalculated by establishing the totalwidth of the structural opening andadding 150mm (200mm for CXL lintels)end bearing allowance for each end.

For example, an 1800mm structuralopening will require a 2100mm lintel(2200mm for CXL).

Wall ConstructionOnce you have determined your wall construction please refer to the lintel selector overleaf

Once you have establishedeach of the above, you willbe able to choose thecorrect lintel for your jobby referring to the relevanttables in this guide

Cavity WallIf the construction is a cavitywall, see the Open Back lintelsection on page 19. You willneed to know the cavity walldimensions to choose thecorrect lintel: • the external leaf

dimension• the cavity dimension

including insulation• the internal leaf dimension

Timber FrameFor timber frameconstructions, you need to know:• the external leaf

dimension• cavity dimension

Once you have thesedimensions, please refer tothe Timber Frame lintelssection on page 35.

External Solid WallThere are three forms oflintel for external solid walls: • single element lintels for a

single leaf of brickwork • two-piece lintels shaped

to carry the two separateleaves of a 215mm fairface brick wall

• box profile lintels whichhave a toe for use in solidbrick or block walls from200mm – 215mm thick

Lintels suitable for use inexternal solid wallconstructions can be foundon page 37.

Internal Partition and Load Bearing Wall Lintels for internal partitionsand load bearing wallscome in three styles:• corrugated lintels for non-

load bearing applications• channel section lintels

for loadings involvingblockwork and floor joists

• box profile lintels forheavier loads includingpoint loads and wideropenings. These lintelsare featured on page 42.

1

2

3Telephone CatnicTechnical Services on

029 2033 7900

Cavity Wall Lintels

page 47

page 41

Single Leaf Lintels

Light DutyCNZ94A

Standard DutyCNZ94C

Standard DutyCNZ95C

Standard DutyCNZ96C

Standard DutyCNZ97C

Heavy DutyCNZ97D

Standard DutyCN48C

Standard DutyCN49C

Heavy DutyCN49D

With over 10,000 variations available to choose from, there’s a design to suit anysize, shape, length, breadth and depth of doorway, archway, window or aperture.

www.catnic.com

page 24page 22page 20


page 36page 34

Standard DutyCG50/125

Heavy DutyCH50/125

Extra Heavy DutyCX50/125

100 48 95 100 48 95

Continuous solid infill

block

100 48 95


block

100 68 95 100 68 95


block

100 68 95


block

100 88 95 100 88 95


block

100 88 95


block


block

125 48 95 125 68 95


block

125 88 95


block

125 48 95


block

125 48 95 125 68 95 125 68 95


block

125 88 95 125 88 95


block

100 48 60

h

100 88 60

h

100 75

143

100 75

143

47 95

h

67 95

h

h

90 95 38 95

h

Product Selector

Wide Inner Leaf Cavity Wall Lintels

90-105mm Cavity Wall – 125-140mm WIL


Heavy DutyCH70/125



Heavy DutyCH90/125


50-65mm Cavity Wall – 125-140mm WIL 70-85mm Cavity Wall – 125-140mm WIL

50-85mm Cavity 90-105mm Cavity 50-75mm Cavity

Standard DutyCGE50/100

Standard DutyCGE90/100

Heavy DutyCN55A

Extra Heavy DutyCN55C

Closed Eaves Cavity Wall Lintels

50-60mmCavity 70-80mmCavity 90-100mmCavity 35-60mm Cavity

Standard DutyCTF5

Standard DutyCTF7

Standard DutyCTF9

Heavy DutyCN23B

Heavy DutyCN23C

Timber Frame Cavity Wall Lintels

14

91

h

94

h

100

55

h

95

70

h

102mm Exterior Solid Wall 102mm Exterior Solid Wall

Special Lintels


Heavy DutyCH50/100



Heavy DutyCH70/100



Heavy DutyCH90/100


Standard Arch Lintels

Bespoke Arch Lintels

Bay WindowLintels

Corner Lintels

50-100mm Cavity Wall Any Wall Construction

90-105mm Cavity Wall50-65mm Cavity Wall 70-85mm Cavity Wall

08 Catnic Brochure FEB 09:Layout 1 04/02/2009 10:45 Page 14

Extreme DutyCXL240

Extreme DutyCXL265

Extreme DutyCXL290

Extreme DutyCXL310

Extreme DutyCXL330

Extreme DutyCXL350

page 44

Can’t find what you’re looking for? Contact Catnic Technical Services on 029 2033 7900

100 50 130 100 70 130 100 90 140

page 38

h

100 95100 95

143

15

A lintel for every application

200 & 215mm Solid Walls

Standard DutyCN71A

Heavy DutyCN71C

Standard DutyCN81B

Heavy DutyCN81C

Heavy DutyCN99/394C

Standard DutyCN50C

Standard DutyCN51C

External Solid Wall Lintels

182

h

215mm Fairface Brick Wall

page 4375mm Solid Wall

Extra Light DutyCN92

Extra Light DutyCN102

Light DutyCN100

Standard DutyCN5XA

Heavy DutyCN5XC

Standard DutyCN6XB

Heavy DutyCN6XC

Extra Heavy DutyCN99/438C

Standard DutyCN56XA

Heavy DutyCN66XC

Extra Heavy DutyCN99/436C

Internal Solid Wall Lintels


page 31page 29

100 108 95 100 128 95 100 128 95

Continuoussolid infill

block

100 128 95


block

100 148 95 100 148 95


block

100 148 95


block

100 108 95


block

100 108 95


block

240

236

6

133

6

133

265

259

6

133

290

284

6

133

310

304

6

133

350

344

6

133

330

324

50mmCavity 70mmCavity 90mmCavity 110mmCavity 130mmCavity 150mmCavity

Standard DutyCN42C

Standard DutyCN99/124C

Standard DutyCN99/1644C

Cavity Wall Lintels

150-165mm Cavity Wall


Heavy DutyCH110/100



Heavy DutyCH130/100



Heavy DutyCH150/100


110-125mm Cavity Wall 130-145mm Cavity Wall

Wide Outer Leaf Cavity Wall Lintels Extreme Loading Cavity Wall Lintels

50mm Cavity Wall140-150mm WOL



page 64Corrosion protection Aesthetics Moisture Control Moisture Control Aesthetics

Accessories

SoffitCladding

ArchCentres

Stop Ends Weep Vents ExternalPlaster Key

Terms and conditions

apply

NEXTDAYDELIVERY

AVAILABLE

68

25

98

25

103

h

100

h

140

h

100mm Solid Wall100mm Solid Wall 140-150mm Solid Wall

08 Catnic Brochure FEB 09:Layout 1 04/02/2009 10:46 Page 15

1716

Steel Lintels Stainless Steel Lintels

Specification Clauses

Steel Lintels Stainless Steel LintelsCavity Walls Provide insulated steel lintel with built indamp proof course and integral plasterkey, manufactured and designed inaccordance with BS EN 845-2:2003.

Product reference: Catnic CG… or CH… or CX…

Material: DX51D & Z275 galvanised steel coated with Duplex CorrosionProtection system.

Installation: Bed on mortar with a minimum 150mmbearing at each end. Raise inner andouter leaves of masonry together.

Timber FrameProvide steel lintel with built in damp proof course, manufactured and designed in accordance with BS EN 845-2:2003.

Product reference: Catnic CTF… or CN23….

Material:DX51D & Z275 galvanised steel coated with Duplex CorrosionProtection system.

Installation: Bed on mortar with a minimum 150mmbearing at each end. Install pinch battenand restraint clips to the timber frameas per manufacturer’s instructions. Propand laterally restrain the lintel duringconstruction.

Single Leaf WallsProvide steel lintel with built in damp proof course, manufactured and designed in accordance with BS EN 845-2:2003.

Product reference: Catnic CNZ… or CN48… or CN49…

Material:DX51D & Z275 galvanised steel coated with Duplex CorrosionProtection system (CN48, CN49) orS250GD & Z600 galvanised steel (CNZ).

Installation: Bed on mortar with a minimum 150mmbearing at each end. When installing themasonry the lintels must be proppedand laterally restrained duringconstruction.

Provide insulated steel lintels withDuplex Corrosion Protection system,manufactured and designed inaccordance with BS EN 845-2:2003.

Product reference: Catnic C…

Material: DX51D & Z275 galvanisedsteel coated with Duplex CorrosionProtection system or DX51D Z600galvanised steel

Installation: Bed on mortar with a minimum 150mmbearing at each end. Raise inner andouter leaves of masonry together whilstpropping and laterally restraining thelintel during construction.

Cavity WallsProvide insulated stainless steel lintelwith built in damp proof course andintegral plaster key, manufactured anddesigned in accordance with BS EN845-2:2003


Material:Austenitic Stainless Steel grade 304S15to BS EN 10088-2-1.4301.


• Lintel Stop EndsProvide lintel Stop Ends to cavity walllintels.

Product reference: Catnic CL3 or C90

Installation: Insert lintel Stop Ends to suit lintelprofiles on either end of the lintel.Position in the nearest perpend at/orbeyond the end of the opening.

• Lintel Cavity Weep VentsProvide lintel Cavity Weep Vents tocavity wall lintels.

Product reference: Catnic WV… colour…

Installation: Insert lintel Cavity Weep Vents (ref:Catnic WV… colour…) at 450mmcentres. At least two per opening to beinstalled.

• Lintel Arch CentreProvide HIPS Arch Centre.

Product reference: Catnic Arch Centre ACA… or ACB…

Installation: Install Arch Centre inaccordance with manufacturer’s fixinginstructions.

• Lintel Soffit CladdingProvide PVCu lintel Soffit Cladding.Install lintel Soffit Cladding

Product reference: Catnic RC for Rebated Cavity Walllintels, or FC for Standard Cavity Wallsand colour)

Installation: Install lintel soffit claddingin accordance with manufacturer’sinstructions.

Lintel AccessoriesOther Applications

17


Stainless Steel LintelsCavity WallsProvide insulated stainless steel lintelwith built in damp proof course andintegral plaster key, manufactured anddesigned in accordance with BS EN845-2:2003


Material:Austenitic Stainless Steel grade 304S15to BS EN 10088-2-1.4301.


• Lintel Stop EndsProvide lintel Stop Ends to cavity walllintels.

Product reference: Catnic CL3 or C90

Installation: Insert lintel Stop Ends to suit lintelprofiles on either end of the lintel.Position in the nearest perpend at/orbeyond the end of the opening.

• Lintel Cavity Weep VentsProvide lintel Cavity Weep Vents tocavity wall lintels.

Product reference: Catnic WV… colour…

Installation: Insert lintel Cavity Weep Vents (ref:Catnic WV… colour…) at 450mmcentres. At least two per opening to beinstalled.

• Lintel Arch CentreProvide HIPS Arch Centre.

Product reference: Catnic Arch Centre ACA… or ACB…

Installation: Install Arch Centre in accordance withmanufacturer’s fixing instructions.

• Lintel Soffit CladdingProvide PVCu lintel Soffit Cladding.Install lintel Soffit Cladding

Product reference: Catnic RC for Rebated Cavity Walllintels, or FC for Standard Cavity Wallsand colour)

Installation: Install lintel soffit claddingin accordance with manufacturer’sinstructions.

Lintel Accessories

18

Steel Lintel ProductsCatnic is committed to offering brand leading steellintels to suit any size, shape, length, breadth anddepth of doorway, archway, window and aperture

Steel Lintels Cavity Wall Lintels 19Extreme Load Lintels 30Closed Eaves Lintels 33Timber Frame Lintels 35External Solid Wall Lintels 37Single Leaf Wall Lintels 40Internal Partition & Loadbearing Lintels 42Stainless Steel Lintels 45Steelwork 46

Cavity Wall Lintels

Open Back Lintels

NOTE: Whilst the above information is intended to offergeneral guidance regarding typical applications, it shouldnot be considered as comprehensive. Requirements notfully covered by the above should be referred to ourtechnical services department for individual consideration.

Typical Catnic Cougar lintel over a timber window

CH & CX

As CG plus:• Supports concrete floors• Attic truss loads• Larger span multiple truss loads

Conditions of use• Nominal 150mm end bearings• Both leaves are raised together• One course of block prior to

installation of floor/roof• Refer to ‘Installing a cavity wall lintel’

(page 71)

Note:For a definition of these terms see theGlossary of Technical Terms on page 82.

Benefits

Easy-to-use open back profileAllows masonry to be built upcontinuously on both outer and inner leaf

Materials used in LintelsThe CG, CH and CX ranges are formedfrom galvanised steel, then powdercoated

Duplex corrosion protectionEnsures optimum durability andlongevity

Built-in DPCSaves time in construction, and meanscavity is easy to clean without risk ofdamage to DPC (refer to page 76)

Built-in plaster keyWith staggered slots applied to the innerflange and ribbed underside of insulation(perforated steel baseplate on CH andCX range)

Integral insulationMaximising thermal efficiency,minimising cold bridging

AccessoriesArchCentres, Stop Ends, Cavity WeepVents, Soffit Cladding (refer to page 64)

CG

• Triangulated masonry load• Supporting uniformly distributed

masonry load• Supporting uniformly distributed

timber floor and roof loads• Suitable for fair faced inner leaf

masonry

19

Two Styles are available for use in cavity wall construction:Catnic 'Cougar Open Back' lintels and CH & CX lintelsincorporate insulation, built in plaster key and built in DPC

Note: To achieve the ‘CH & CX’ loadingfigures indicated, lintels must be built-inas illustrated, ensuring that theblockwork infill is well-jointed duringconstruction and compatible with thestrength of the masonry above.

* For CG lintels used with 140mmdense blocks please refer to“Installing a Cavity Wall Lintel’ on page 72

Cavity Wall Lintels

Standard Duty

Heavy Duty

Extra Heavy Duty

2120

CG50/100

Standard lengths (mm) 900-1500 1800 2100 2400 2700 3000-3600

SWL 1:1/3:1 (kN) 15 18 20 22 26 26

Weight (kg/m) 5.8 7.3 8.0 8.6 9.8 12.3

Nominal height ‘h’ (mm) 140 140 160 180 220 220

Standard lengths (mm) 900-1800 1950-2100 2250-2400

SWL 1:1/19:1 (kN) 32 48 45

Weight (kg/m) 10.5 13.1 13.1

Nominal height ‘h’ (mm) 157 157 157

CH50/100

CX50/100


All ratios are shown inner to outer



Standard lengths (mm) 900-2700 2850-3000 3300-3900 4200-4800

SWL 1:1/19:1 (kN) 60 55 50 32

Weight (kg/m) 16.0 16.0 19.4 19.4

Nominal height ‘h’ (mm) 232 232 232 232

Open Back Lintels• For 50-65mm cavity • 100-115mm inner leaf

Standard lengths are available in 150mm increments up to 3000mm, 300mm at lengths3000mm - 4800mm (including 4575mm, but excluding 4500mm).

The SWL (safe working load) is based on the total UDL (uniform distributed load) overmaximum span using 150mm end bearings.

Standard lengths are available in 300mm increments.






Concrete Floor LoadsWhen using the Catnic CH and CX Open Back ranges with concrete floors, always ensurethat the blockwork is built tight against the inner vertical face of the lintel, and that a mortarjoint is added to the top of the blockwork so that the floor units have an even spread overthe inner flange of the lintel. For guidance on installation refer to page 73.


SWL 1:1/19:1 (kN) 32 48 45

Weight (kg/m) 10.7 13.4 13.4


CH50/125

Cavity Wall Lintels

Standard Duty

Heavy Duty

Extra Heavy Duty

• For 50-65mm cavity • 125-140*mm wide inner leaf

CG50/125*


SWL 1:1/3:1 (kN) 12 17 20 26

Weight (kg/m) 6.3 7.8 9.0 12.9






Open Back Lintels

48100 95

h

125 48 95

h

125 48 95

hContinuoussolid infill

block

125 48 95


block

100 48 95


block

100 48 95


block

CX50/125


SWL 1:1/19:1 (kN) 60 55 50 32

Weight (kg/m) 16.2 16.2 19.8 19.8


Where CH & CX lintels are required tosupport greater loads than the figurespublished please contact our TechnicalServices Department on 029 2033 7900.



2322

Cavity Wall Lintels

Standard Duty

Heavy Duty

Extra Heavy Duty





Cavity Wall Lintels

Standard Duty

Heavy Duty

Extra Heavy Duty





Open Back Lintels

100 68 95

h

125 68 95

h

125 68 95


block

125 68 95


block

100 68 95


block

100 68 95

h Continuoussolid infill

block


CG70/100

Standard lengths (mm) 750-1500 1650-1800 2100 2400 2700 3000-3600

SWL 1:1/3:1 (kN) 15 18 20 22 26 26

Weight (kg/m) 6.0 7.5 8.1 8.7 10.0 12.5

Nominal height ‘h’ (mm) 140 140 160 180 220 220


SWL 1:1/19:1 (kN) 32 48 45

Weight (kg/m) 10.9 13.6 13.6


CH70/100

CX70/100



SWL 1:1/19:1 (kN) 60 55 50 32

Weight (kg/m) 16.4 16.4 19.9 19.9




Standard lengths are available in 150mm increments up to 1800mm,300mm at lengths from 2100-3600mm.




Standard lengths are available in 150mm increments up to 1800mm, 300mm at lengthsfrom 2100-3000mm.




SWL 1:1/19:1 (kN) 32 48 45

Weight (kg/m) 11.1 13.9 13.9


CH70/125

CG70/125*


SWL 1:1/3:1 (kN) 12 17 20 26

Weight (kg/m) 6.3 8.0 9.2 13.1



CX70/125


SWL 1:1/19:1 (kN) 60 55 50 32

Weight (kg/m) 16.7 16.7 20.3 20.3







2524

Cavity Wall Lintels

Standard Duty

Heavy Duty

Extra Heavy Duty





Cavity Wall Lintels

Standard Duty

Heavy Duty

Extra Heavy Duty





Open Back Lintels

CG90/100

Standard lengths (mm) 750-1500 1650-1800 1950-2100 2250-2400 2550-2700 2850-3600

SWL 1:1/3:1 (kN) 15 18 20 22 26 26

Weight (kg/m) 6.1 7.6 8.3 8.9 10.2 13.0

Nominal height ‘h’ (mm) 140 140 160 180 220 220100 88 95

h

125 88 95

h

125 88 95


block

125 88 95


block

100 88 95


block

100 88 95


block


SWL 1:1/19:1 (kN) 32 48 45

Weight (kg/m) 11.2 14.0 14.0


CH90/100

CX90/100



SWL 1:1/19:1 (kN) 60 55 50 32

Weight (kg/m) 16.9 16.9 20.5 20.5







Standard lengths are available in 150mm increments up to 1800mm,300mm at lengths from 2100mm - 3000mm.




SWL 1:1/19:1 (kN) 32 48 45

Weight (kg/m) 11.5 14.3 14.3


CH90/125

CG90/125*


SWL 1:1/3:1 (kN) 12 17 20 26

Weight (kg/m) 6.5 8.1 9.4 13.3



CX90/125


SWL 1:1/19:1 (kN) 60 55 50 32

Weight (kg/m) 17.2 17.2 20.9 20.9


Standard lengths are available in 150mm increments up to 3000mm, 300mm at lengthsfrom 3000-3600mm.



A full range of lintels is available to suit125-140mm wide inner leaf modelsplease contact our Technical ServicesDepartment on 029 2033 7900



2726

Cavity Wall Lintels




Cavity Wall Lintels

• For 110-125mm cavity • 100-115mm inner leaf



Open Back Lintels

100 108 95

h

100 108 95


block

100 108 95


block

Standard Duty

Heavy Duty

Extra Heavy Duty




CG110/100

100 128 95

h

100 128 95


block

100 128 95


block

Standard lengths (mm) 900-1500 1800 2100 2400-3600

SWL 1:1/3:1 (kN) 15 18 20 26

Weight (kg/m) 11.3 11.3 11.9 16.8


Standard lengths are available in 150mm increments up to 3000mm,300mm at lengths from 3000mm to 3600mm

Standard lengths (mm) 900-1800 2100 2400

SWL 1:1/19:1 (kN) 32 48 45

Weight (kg/m) 12.3 14.7 14.7


CH110/100

CX110/100


SWL 1:1/19:1 (kN) 60 55 50 32

Weight (kg/m) 17.3 17.3 20.8 20.8




Standard Duty

Heavy Duty

Extra Heavy Duty

CG130/100


SWL 1:1/3:1 (kN) 15 18 20 26

Weight (kg/m) 11.8 11.8 12.4 17.3




SWL 1:1/19:1 (kN) 32 48 45

Weight (kg/m) 12.6 15.1 15.1


CH130/100

CX130/100


SWL 1:1/19:1 (kN) 60 55 50 32

Weight (kg/m) 17.8 17.8 21.4 21.4







Open Back Lintels




2928

Cavity Wall Lintels Cavity Wall Lintels






100 148 95

h

100 148 95


block

100 148 95


block




100 50 130

100 70 130

100 90 140

Standard Duty

Heavy Duty

Extra Heavy Duty

CG150/100


SWL 1:1/3:1 (kN) 15 18 20 26

Weight (kg/m) 12.3 12.3 12.9 17.7




SWL 1:1/19:1 (kN) 32 48 45

Weight (kg/m) 13.1 15.6 15.6


CH150/100

CX150/100


SWL 1:1/19:1 (kN) 60 55 50 32

Weight (kg/m) 18.2 18.2 21.9 21.9







Open Back Lintels

Standard Duty - 50mm Cavity

Standard Duty - 75mm Cavity

Standard Duty - 100mm CavityCN99/1644C

Wider Outer Leaf Lintels• For 140-150mm wide outer leaf• 50-100mm cavity • 100-115mm inner leaf

CN42C

CN99/124C

Standard lengths (mm) 750-4200

SWL 1:1/5:1 (kN) 29

Weight (kg/m) 20.5

Nominal height ‘h’ (mm) 219


SWL 1:1/5:1 (kN) 29

Weight (kg/m) 20.6



SWL 1:1/5:1 (kN) 29

Weight (kg/m) 21.4


Standard lengths are available in 150mm increments up to 3000mm,300mm at lengths 3000mm - 4200mm.





Material usedSupplied in post galvanised finish.Lintels manufactured from a universalbeam section and 6.0mm structuralgrade steel plate Grade S275 to BSEN 10025:2004 and hot dipgalvanised after manufacture to BSEN ISO1461:1999.

Standard increment lengthsOverall lengths are available in 50mmincrements for lengths up to 6600mm.

Optional ExtraAs an optional extra, CXL lintels canbe supplied with expanded metalmesh secured to the base plate.

Load ratiosTo achieve the loading figuresshown, the lintel must be laterallyrestrained and have 200mm endbearing supports and inner to outerload ratios between 5:1 and 19:1.

Separate DPCA separate flexible DPC must beinstalled during construction.

6

6

213

133

265

259

3130

Application:

50mm cavity & 110-115mm inner leaf

Application:


The SWL (safe working load) is based on the total UDL (uniform

distributed load) over maximum span using 200mm end bearings.

CXL240

Standard lengths (mm) 2100-3000 3300-4800 5100 5400 5700 6000 6300 6600SWL 5:1/19:1(kN) 88 83 78 71 64 56 52 47Weight (kg/m) 41.1 41.1 41.1 41.1 41.1 41.1 41.1 41.1Ixx (cm4) 4051 4051 4051 4051 4051 4051 4051 4051Zxx (cm3) 303 303 303 303 303 303 303 303Serviceability moment (kNm) 50 50 50 50 50 50 50 50Allowable reaction (kN) 66 66 66 66 66 66 66 66

CXL265

Standard lengths (mm) 2100-3000 3300-4800 5100 5400 5700 6000 6300 6600SWL 5:1/19:1 (kN) 88 83 78 71 64 56 52 47Weight (kg/m) 42.3 42.3 42.3 42.3 42.3 42.3 42.3 42.3Ixx (cm4) 4139 4139 4139 4139 4139 4139 4139 4139Zxx (cm3) 305 305 305 305 305 305 305 305Serviceability moment (kNm) 50.3 50.3 50.3 50.3 50.3 50.3 50.3 50.3Allowable reaction (kN) 66 66 66 66 66 66 66 66

240

236

6

6

213

133

Standard lengths are available in 50mm increments for lengths up to 6600mm.


Lintels for extreme loadsLonger spansHigh loads at longer spans

Varying widthsSuits a variety of wall widths – with special widths on application

Note:

For alternative cavity wall constructions please contact

our Technical Services Department on 029 2033 7900.

Extreme Load Lintels

For longer lengths to supportheavy loads, please refer toour Technical ServicesDepartment on 029 2033 7900.

Cavity Wall ‘CXL’ Fabricated LintelsDesigned for external cavity wallswhen extreme loads are imposed

6

6

213

133

265

259

Application:

70mm cavity & 100-115mm inner leafCXL265



Application:


Standard lengths (mm) 2100-3000 3300-4800 5100 5400 5700 6000 6300 6600SWL 5:1/19:1(kN) 88 83 78 71 64 56 52 47Weight (kg/m) 41.1 41.1 41.1 41.1 41.1 41.1 41.1 41.1Ixx (cm4) 4051 4051 4051 4051 4051 4051 4051 4051Zxx (cm3) 303 303 303 303 303 303 303 303Serviceability moment (kNm) 50.0 50.0 50.0 50.0 50.0 50.0 50.0 50.0Allowable reaction (kN) 66 66 66 66 66 66 66 66 240

236

6

6

213

133


31



For alternative cavity wallconstructions, please contactour Technical ServicesDepartment on 029 2033 7900.

CXL290


6

6

213

133

290

284

Application:



08 Catnic Brochure JAN 09:Layout 1 02/02/2009 17:17 Page 31

32


Cavity Wall ‘CXL’ Fabricated Lintels

Application:




Application:


Standard lengths (mm) 2100-3000 3300-4800 5100 5400 5700 6000 6300 6600SWL 5:1/19:1(kN) 88 83 78 71 64 56 52 47Weight (kg/m) 44.3 44.3 44.3 44.3 44.3 44.3 44.3 44.3Ixx (cm4) 4285 4285 4285 4285 4285 4285 4285 4285Zxx (cm3) 310 310 310 310 310 310 310 310Serviceability moment (kNm) 50.8 50.8 50.8 50.8 50.8 50.8 50.8 50.8Allowable reaction (kN) 66 66 66 66 66 66 66 66

6

6

213

133

310

304

6

6

213

133

330

324

6

6

213

133

350

344


CXL350


Application:





For alternative cavity wallconstructions, please contactour Technical ServicesDepartment on 029 2033 7900.


32 33

Cavity Wall Eaves LintelsClosed Eaves Lintels

Eaves LintelsClosed eaves lintels aremanufactured from galvanisedsteel and powder coated forextra protection. Available inboth Cougar open back orClassic box styles

Cougar Open Back Classic Box

For use in cavity wall constructionfor closed eaves applications

Easy-to-use open back profileOpen back style lintels allow masonry to be built upcontinuously on inner leaf

Duplex Corrosion Protection SystemEnsures optimum durability and longevity

Continuous insulationMaximising thermal efficiency, minimising cold bridging

Integral plaster keyWith staggered slots to the inner flange and ribbedunderside of insulation

Typical applications• Universal application caters for all loading conditions• Direct roof loading• Attic truss loads• Supports point loads eg. multiple trusses



Integral plaster keyWith staggered slots to the underside of box section

Eaves Lintel

To achieve the stated safe working load (SWL), closed eaves lintels must be built in with solid blockwork and continuous timberwall-plates. Allow 150mm at each end for bearing support.

Application:


CXL315

Standard lengths (mm) 2100-3000 3300-4800 5100 5400 5700 6000 6300 6600SWL 5:1/19:1(kN) 88 83 78 71 64 56 52 47Weight (kg/m) 44.6 44.6 44.6 44.6 44.6 44.6 44.6 44.6Ixx (cm4) 4301 4301 4301 4301 4301 4301 4301 4301Zxx (cm3) 311 311 311 311 311 311 311 311Serviceability moment (kNm) 50.9 50.9 50.9 50.9 50.9 50.9 50.9 50.9Allowable reaction (kN) 66 66 66 66 66 66 66 66

CXL340


6

6

213

133

315

309

6

6

213

133

340

334

Application:







CXL290


6

6

213

133

290

284

Application:



Cavity Wall ‘CXL’ Fabricated Lintels

35

Timber Frame Lintels

Note: lintels should be suitably propped during

construction. Refer to “Installing Timber Frame Lintel

on page 74.

CTF5 Lintel

CN23 Lintel

34

Closed Eaves Lintels

BenefitsDuplex corrosion protection

Ensures optimum durability andlongevity.

Built-in Damp Proof CourseSloping outer face and Duplexcorrosion protection together providea built-in DPC.

Restraint clipsAllows vertical differential movementof timber frame.

All timber frame models must besecured with restraint clips (supplied)and a batten (not supplied) to preventlateral deflection (twist) during thebuilding stage and to achieve theloading figures shown.

For use in timberframe construction


Timber FrameThe timber frame rangeconsists of single and double elements lintels with a sloping outer face and Duplex corrosionprotection which togetherprovide a built in DPC

100 48 60

h

100 88 60

h


• For 50-85mm cavity• 100-115mm inner leafCGE50/100

Standard lengths (mm) 900-1500 1800-2100 2400 2700SWL (kN)* 25 22 20 20Weight (kg/m) 7.0 8.0 10.2 10.2Nominal height ‘h’ (mm) 95 115 115 115


• For 90-105mm cavity• 100-115mm inner leafCGE90/100

Standard lengths (mm) 900-1500 1800-2100 2400 2700SWL (kN)* 25 22 20 20Weight (kg/m) 7.7 8.3 10.7 10.7Nominal height ‘h’ (mm) 95 115 115 115

Standard lengths are available in increments of 150mm. For lengths over 2700mm please contact Technical Services.

Standard lengths are available in increments of 150mm. For lengths over 2700mm please contact Technical Services.

• For 50-75mm cavity• 100mm inner leafCN55A

Standard lengths (mm) 900&1200 1500 1650-2100 2400&2700SWL (kN) 30 30 25 20Weight (kg/m) 9.0 9.0 9.0 9.0

CN55C

Standard lengths (mm) 900&1200 1500 1650-2100 2400&2700SWL (kN) 50 50 40 30Weight (kg/m) 12.8 12.8 12.8 12.8

100 75

143

Open Back

Note: for lintels to suit 100mm cavitiesrefer to CN71 or CN81 on Page 38.

38 95

h

37


For use in 200mm & 215mm solid exterior walls

Benefits• Box Profile

Saves on brickwork and insulation.Resists twisting during construction

• Instant full load useBox profile is designed to carry full load of wet masonry as soonas it is installed



Integral plaster keyWith staggered slots to side and underside of the boxprofile

Designed to carry two separate leaves of215mm fairface brick wall


External Solid Wall CN71 Lintel

36

The SWL (safe working load) is based on the total UDL (uniform distributed load) over maximum span using 150mm end bearings.

CTF5

• For 70-80mm cavity & 102mm outer leafStandard DutyCTF7

Standard lengths (mm) 750-1200 1350-1500 1650-2400 2550-3000 3300-3600 3900-4800SWL (kN) 4 5 7 7 9 10Weight (kg/m) 4.2 5.2 5.9 7.5 8.3 9.3Nominal height ‘h’ (mm) 145 145 187 187 218 265

• For 90-100mm cavity & 102mm outer leafStandard DutyCTF9

Standard lengths (mm) 750-1500 1650-2400 2550-3000 3300-3600 3900-4800SWL (kN) 5 7 7 9 10Weight (kg/m) 4.7 5.9 8.1 8.4 9.6Nominal height ‘h’ (mm) 146 146 200 220 271

• For 35-60mm cavity & 102mm outer leafHeavy DutyCN23B CN23C

Standard lengths (mm) 750-3600SWL (kN) 10Weight (kg/m) 12.8Nominal height ‘h’ (mm) 268

3900-480010

16.3268

For use in solid or block walls200mm to 215mm

Solid WallsExternal solid wall lintels aremanufactured from galvanisedsteel and powder coated forextra protection. Available inClassic box or two-pieceinverted ‘T’ styles

Classic Box Two-piece inverted ‘T’

CN51 Lintel


External Solid Walls

47 95

h

67 95

h

• For 50-60mm cavity & 102mm outer leafStandard Duty


h

90 95

Standard lengths are available in 150mm increments up to 3000mm, 300mm at lengths from 3000mm - 4800mm.



Standard lengths are available in 150mm increments up to 3000mm, 300mm at lengths from 3000mm - 4800mm (including 4575mm but excluding 4500mm).

Standard lengths (mm) 750-1800 1950-2700SWL (kN) 10 12Weight (kg/m) 9.0 12.7Nominal height ‘h’ (mm) 91 167

• For 200mm & 215mm Exterior Solid Walls

CN71A CN71C


38

Standard lengths are available in increments of 300mm

(including 4575mm, but excluding 4500mm).


CN50C CN51C

• For two separate leaves of a 215mm fairface brick wall

Classic Box & Two-piece ‘T’ Profile

100 95

143

h

100 95

182

h

CN81CCN81B

Standard lengths (mm) 2100-3600 2100-2700 2850-3300 3600 3900-4575 4800SWL (kN) 29 54 47 39 29 26Weight (kg/m) 15.1 18.5 18.5 18.5 18.5 18.5Nominal height ‘h’ (mm) 219 219 219 219 219 219

Standard lengths are available in increments of 150mm.

Standard lengths are available in increments of 150mm at lengths up to 3000mm,

300mm at lengths from 3000mm – 4800mm (including 4575mm, but excluding 4500mm).

Standard Duty

Standard Duty Heavy Duty

Standard Duty Standard Duty

Heavy Duty

CN99/394C

Standard lengths (mm) 3000-3300 3600-3900 4200-4800SWL (kN) 54 51 49Weight (kg/m) 22.3 22.3 22.3Nominal height ‘h’ (mm) 295 295 295

Heavy Duty

Standard lengths are availble in increments of 150mm.






CN81 Lintel

CG Lintel installedin solid wallconstruction

For solid wall construction in excess of 250mman appropriate Cougar Open Back Lintel can beutilised.

Box lintel profiles can be used in Tile HangingApplications on External Solid Walls.

• For 200mm & 215mm Exterior Solid Walls

CN71A CN71C


3938


Standard lengths are availble in increments of 150mm.


CN50C CN51C


• For two separate leaves of a 215mm fairface brick wall

Classic Box & Two-piece ‘T’ Profile

100 95

143

219

100 95

182

h

CN81CCN81B


Other typical External Solid Wall Lintel Applications

Standard lengths are available in increments of 150mm.

Standard lengths are available in increments of 150mm at lengths up to 3000mm,

300mm at lengths from 3000mm – 4800mm (including 4575mm, but excluding 4500mm).

Standard Duty


Standard Duty Standard Duty

Heavy Duty

100

55

h

95

70

h

4140

For use in 102mm exterior walls

ApplicationsCNZ94A suitable for use over meter boxes only.CNZ94C, CNZ95C, CNZ96C & CNZ97C suitable for light duty loading applications

For use in 102mm exterior walls

ApplicationsCN48C & CN49C lintels are fully built into wall construction foruse with single leaf face brick or block walls


For use in solid or block walls

Catnic single leaf lintels are available in an angle and ‘C’ shaped profile toaccommodate meter boxesand single leaf face brick or block walls

Angle ‘C’ Profile

External Solid Walls

Lintels CN48 and CN49 should be suitably propped and laterally

restrained during construction. To achieve loading figures, lintels must

be constructed with brickwork (blockwork) fully built-in as shown.

Lintels CNZ94C, CNZ95C, CNZ96C, CNZ97C and CNZ97D should be suitably propped and laterally restrained during construction.

CN48 LintelCNZ96 Lintel

• For 102mm Exterior Solid Walls

CNZ94A

Standard lengths (mm) 750 1350SWL (kN) 8 4Weight (kg/m) 2.7 2.7Nominal height ‘h’ (mm) 88 88

CN48C CN49C

Standard lengths (mm) 750-1800 1950-3000 2850-3000 3300-4800SWL (kN) 15 20 30 20Weight (kg/m) 7.5 9.3 18.0 18.0Nominal height ‘h’ (mm) 154 229 231 231

CNZ94C CNZ97CCNZ96CCNZ95C CNZ97D


CN49D

Single Leaf Wall Lintels

91

h

94

h

Standard DutyStandard Duty Heavy Duty

Standard lengths are available in increments 150mm at lengths up to 3000mm,300mm at lengths 3000mm - 4800mm.

Standard lengths are available in increments of 150mm at lenghts up to 3000mm, 300mm at lengths3000mm - 3900mm.



100

55

h

95

70

h

41

Lintels CN48 and CN49 should be suitably propped and laterally

restrained during construction. To achieve loading figures, lintels must

be constructed with brickwork (blockwork) fully built-in as shown.

Lintels CNZ94C, CNZ95C, CNZ96C, CNZ97C and CNZ97D should be suitably propped and laterally restrained during construction.

• For 102mm Exterior Solid Walls

CNZ94A

Standard lengths (mm) 750 1350SWL (kN) 8 4Weight (kg/m) 2.7 2.7Nominal height ‘h’ (mm) 88 88

CN48C CN49C

Standard lengths (mm) 750-1800 1950-3000 2850-3000 3300-4800SWL (kN) 15 20 30 20Weight (kg/m) 7.5 9.1 17.6 17.6Nominal height ‘h’ (mm) 154 229 231 231

CNZ94C CNZ97CCNZ96CCNZ95C CNZ97D


CN49D

91

h

94

h

Standard DutyStandard Duty Heavy Duty

Standard lengths are available in increments 150mm at lengths up to 3000mm,300mm at lengths 3000mm - 4800mm (including 4575mm, but excluding 4500mm).

Standard lengths are available in increments of 150mm at lenghts up to 3000mm, 300mm at lengths3000mm - 3900mm.




Offers a cost effectivesolution for extra light duty loads

ApplicationsCN92 & CN102

Suitable for nominal domestic loading

Integral plaster keyLozenge shaped staggered slots tosides of corrugated profile

Offers a cost effectivesolution for light duty loads

ApplicationsCN100As corrugated lintel plus:Suitable for masonry/timber floor loads.(Note: 1800 & 2100 are not suitable forfloor loads)

Duplex Corrosion Protection SystemEnsures optimum durability andlongevity

Integral plaster keyWith staggered slots to all sides ofchannel profile

Suitable for standard duty loads

ApplicationsCN5X & CN6XUniversal application caters for allloading conditions• Direct floor or roof load• Supports concrete floor loads• Supports point loads

eg. steel beams etc• Optional 4 course profile for high

loads at extended lengths

CN56X & CN66XAs previous plus:• Suitable fro 140mm and 150mm

blockwork

Duplex Corrosion Protection SystemEnsures optimum durability andlongevity

Integral plaster keyWith staggered slots to all sides of boxprofile

Internal Partition & Loadbearing Wall LintelsInternal Partition & Loadbearing Wall Lintels

42

Internal Wall Lintels

CN100 Lintel CN5X LintelCN92 Lintel

43

Catnic lintels for internal partitions and loadbearing wall are available in eithercorrugated, channel or box section to accommodate different loads and openings

Corrugated Channel Box

Standard lengths are available in increments of

150mm at lengths up to 3000mm, 300mm at

lengths from 3000mm – 4800mm (including

4575mm, but excluding 4500mm).

The SWL (safe working load) is based on the total UDL (uniform distributed

load) over maximum span using 150mm end bearings.

Note: When using CN92 and CN102lintels normal building practice shouldbe observed, in that one course ofblockwork should be laid on the linteland the mortar allowed to harden for atleast 24 hours before additional loadsare applied.

• For 100mm Interior Solid Walls

CN92 CN102

Standard lengths (mm) 1050-1200 1050-1200SWL (kN) 7 7Weight (kg/m) 1.2 1.8

CN100

Standard lengths (mm) 1050-1200 1350-1500 1800* 2100*SWL (kN)* 10 13 3 3Weight (kg/m) 4.7 5.9 4.7 4.7Nominal height ‘h’ (mm) 50 73 50 50

• For 100mm Interior Solid Walls

CN5XA CN5XC

Standard lengths (mm) 750-1500 1650-2100 2250-2700 750-1500 1650-1950SWL (kN)* 29 25 20 49 39Weight (kg/m) 7.6 7.6 7.6 12.3 12.3Nominal height ‘h’ (mm) 143 143 143 143 143

CN6XB CN6XC

CN99/438C


CN99/438C


For use in solid or block walls

100

h


68

25

75

98

25

100

103

h

*Not suitable for floor loads

• For 75mm & 100mm Interior Solid WallsExtra Light Duty

Light Duty


Standard Duty

Extra Heavy Duty

Heavy Duty

Standard lengths are available in increments of 150mm

Standard lengths are available in increments of 150mm at lengths up to 1500mm, 300mm at lengths from 1800mm - 2100mm.

44

CN56X Lintel overdoor opening

Standard lengths are available in increments of 150mm at

lengths up to 3000mm, 300mm at lengths from 3000mm

– 4800mm (including 4575mm, but excluding 4500mm).

Internal Partition & Loadbearing Wall Lintels

• For 140mm & 150mm Interior Solid Walls

CN99/436C


CN66XC

Standard lengths (mm) 1650-2700 2850-3300 3600 3900-4575 4800SWL (kN) 54 47 39 29 26Weight (kg/m) 18.0 18.0 18.0 18.0 18.0Nominal height ‘h’ (mm) 219 219 219 219 219

CN56XA


The SWL (safe working load) is based on the total UDL (uniform distributed


140

h

Standard Duty

Extra Heavy Duty

Heavy Duty

4544

CN56X Lintel overdoor opening

Standard lengths are available in increments of 150mm at

lengths up to 3000mm, 300mm at lengths from 3000mm

– 4800mm (including 4575mm, but excluding 4500mm).

Stainless Steel LintelsInternal Partition & Loadbearing Wall Lintels

• For 140mm & 150mm Interior Solid Walls

CN99/436C


CN66XC

Standard lengths (mm) 1650-2700 2850-3300 3600 3900-4575 4800SWL (kN) 54 47 39 29 26Weight (kg/m) 18.0 18.0 18.0 18.0 18.0Nominal height ‘h’ (mm) 219 219 219 219 219

CN56XA


Available in any Catnic lintel profileto accommodate any possible wallconstruction

The standard Duplex corrosion protectionsystem used on Catnic's range of lintelsprovides class leading protection againstcorrosion in all normal circumstances.

However there may be instances when,particularly aggressive environments or to increase the expected life of the lintel, a stainless steel lintel may be required.


a) Non-aggressive EnvironmentBuildings exceeding three storeys in a non-aggressive environment. The material coating specification for products in contact with orembedded in an outer leaf of anexternal cavity wall or a single leafexternal wall should be austeniticstainless steel.

b) Aggressive EnvironmentBuildings located in an aggressiveenvironment (e.g. coastal sites). Thematerial coating specification forproducts in both leaves of externalwalls should be austenitic stainlesssteel.

The outstanding anti-corrosionproperties of stainless steel also make itsuitable for specialist laboratory ormedical applications, hospitals,residential care homes, schools andprisons where the whole life expectancyand maintenance programme becomekey design considerations.

Open Back Lintels

The British Standards 'Code of practice for the use ofmasonry - Part 3: Materials and components, designand workmanship' BS5628-3:2005 implies that the lintelmaterial/coating specifications should be limited toaustenitic stainless steel in two distinct circumstances:

Stainless Steel


Plaster key


Product Range• All Catnic Stainless Steel Lintels are

manufactured from AusteniticStainless Steel, grade 304S15 to BS EN 10088-2-1.4301

• Other grades of stainless steel areavailable on request.

• All Catnic galvanised steel loadingtables apply.

• All stainless steel lintel lengths aremanufactured to order, price anddelivery on application.

• All standard stainless steel lintels fromCatnic are BBA approved underAgrément Certificate No. 91/2638

• Special lintels in stainless steel areavailable manufactured to order.

• All stainless steel lintel products aremanufactured to order.

Special lintel

Box lintel

Timber frame lintel

Single element lintelThe SWL (safe working load) is based on the total UDL (uniform distributed


140

h

Serial Size Weight Depth (D) Width (B) Web Thk (t) Flange Thk (T)(mm) (mm) (mm) (mm) (mm)

PFC2309032 230 x 90 32.2 230.0 90.0 7.5 14.0


UC1515/23 152 x 152 23.0 152.4 152.2 5.8 6.8UC1515/30 152 x 152 30.0 157.6 152.9 6.5 9.4UC2020/46 203 x 203 46.1 203.2 203.6 7.2 11.0UC2525/73 254 254 73.1 254.1 254.6 8.6 14.2

46

Special Lintels

SteelworkWhen loading conditions exceed our standardrange of lintels Catnic offer a selection ofSteelwork beams, columns and channels

D

B

t

T

D

B

t

T

D

B

t

T

Universal Beams (UB)


UB1710/19 178 x 102 19.0 177.8 101.2 4.8 7.9UB2010/23 203 x 102 23.1 203.2 101.8 5.4 9.3UB2013/30 203 x 133 30.0 206.8 133.9 6.4 9.6UB2514/43 254 x 146 43.0 259.6 147.3 7.2 12.7

Universal Columns (UC)

Channels (PFC)

Other standard sections available on request.

Manufactured from grade S275all steelwork sections aresupplied cut to length with holesdrilled as required. A primedfinish is offered as standard withhot dipped post galvanised finishavailable on request.

In addition to the range depicted below Catnic can also accommodate requests for composite bolted beamscomplete with the necessary bolts and spacers.

Catnic Steel sections comply with EN10025:2004:Part 2 – technical delivery conditions for nonalloy structural steels.

Dimensions and properties based on Serial Sizes.

Special Lintels Standard Arch Lintels 48Bespoke Lintels 49

46

Special Lintels

Special Lintels

Steelwork

Catnic is committed to delivering a range of excitingshapes for unique designs and feature brickwork toinspire today’s architects and builders...

...the only constraint is your imagination.

47

When loading conditions exceed our standardrange of lintels Catnic offer a selection ofSteelwork beams, columns and channels

H

W

H

W

H

W

Universal Beams (UB)

Height (mm) Width (mm) Weight (Kg/m)178 102 19203 102 23203 133 30254 146 43

Universal Columns (UC)

Height (mm) Width (mm) Weight (Kg/m)152 152 23152 152 30203 203 46254 254 73

Channels (PFC)

Height (mm) Width (mm) Weight (Kg/m)230 90 32

Catnic Steel sections comply with EN10025:2004:Part 2 – technical delivery conditions for nonalloy structural steels.

Dimensions and properties based on Serial Sizes.

Other standard sections available on request.

Manufactured from grade S275all steelwork sections aresupplied cut to length with holesdrilled as required. A primedfinish is offered as standard withhot dipped post galvanised finishavailable on request.

In addition to the range depicted below Catnic can also accommodate requests for composite bolted beamscomplete with the necessary bolts and spacers.

245

Clear Span

150

150

285

Clear Span

150

150

150

Special LintelsSpecial Lintels

4948

Arches When you want to make a feature ofbrickwork you may need more than astandard lintel, so Catnic offers bothstandard and innovative bespoke designs

When a building requires a more unconventionalsupport solution, Catnic is again, one step ahead andhas an experienced feature design engineer dedicatedto providing innovative design solutions to achieve thearchitect’s vision

Bespoke Designs

Lintel Clear Span WeightType (mm) (kg)

CCA/600 600 11.79CCA/630 630 12.26CCA/900 900 16.53CCA/915 915 16.77CCA/1200 1200 21.37

Application

102115-125

102102

50-8550-65

3

3

20mm maximumoverhang

Application

102115-125

102102

90-10070-85

Outer Leaf Inner Leaf

3

3




Standard semi-circular arches available for

domestic housing applications. For alternative

cavity and masonry widths, please contact our

Technical Services Department.

Typical application showingsemi-circular arched lintel infacing brickwork

Naturally, Catnic’s technical supportteam has the breadth of knowledgeand expertise to design lintels for themost creative of openings, with in-house facilities and skill tomanufacture fabricated lintels to suitcountless configurations.

Various styles of bay window, gothicand apex arches, bulls-eye and cornerfeature lintels for domestic andcommercial applications are handwelded and post galvanised for extracorrosion protection, assuring lasting quality.

Although the majority of arches aresemi-circular, Catnic also offer gothicarches for Victorian styled buildingsand apex designs for triangular ordiamond shaped openings, curvedon-plan for bays, in curved walls andalso elliptical, parabolic, Arabian andsegmental. The list is endless andthere are limitless variations which Catnic have the capacity to fabricatevirtually any arch specificationrequired.

A fast and cost effective fabricationservice from a unique and specialisedfabrication facility – means thatbespoke lintels can often be deliveredalong with standard lintels minimisingdelays on site. Each lintel, as always,is manufactured to a high qualitystandard; hot dip galvanised aftermanufacture to BS EN ISO 1461:1999

Feature lintelsWhile your imagination runs wild withcreative openings, why not beinventive with brickwork too?

Catnic has the expertise to designand manufacture lintels for decorativebrick and stone work, for examplereduced toe lintels for discrete usewith cant bricks.

All arch lintels require a separateDPC installed over

Catnic have a standard range of ten semi-circular arches specificallydesigned and manufactured fordomestic housing applications withnominal loadings. These arches offerconsiderable flexibility for featurebrickwork with clear spans rangingfrom 600mm to 1200mm and areavailable from stock.

For alternative cavity and masonrywidths to those shown, pleasecontact our Technical ServicesDepartment on 029 2033 7900.

Lintel Clear Span WeightType (mm) (kg)

CCB/600 600 12.96CCB/630 630 13.47CCB/900 900 18.14CCB/915 915 18.40CCB/1200 1200 23.43

150

Standard Arch Lintels

51

If you require furtherinformation pleasetel: 029 2033 7900.

The apex lintel enables the creation of triangular or diamondshaped openings. Commonly used with high vaulted ceilingsenhancing the flood of daylight and perception of grandeur.

All Catnic special fabricated lintels are hot-dip galvanised aftermanufacture for complete protection from corrosion,eliminating the need for on-site painting or maintenance.

Apex lintels are available in 10 working days from receipt oforder and approved drawing.

Please complete the form below and submit to TechnicalServices on Fax: 087 0024 1809 to request a quotation.

Special Lintels - Apex Arch Lintel

51

E A E

H

Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax

Plaster Key Requirements*

Inside Only Both Sides None

Wall Construction

Outer leaf (mm)* Cavity (mm)* Inner leaf (mm)*

Application details (leave blank if unknown/inapplicable)

Masonry Height (mm) Roof Span (mm)

Timber Floor Concrete Floor

Load (leave blank if unknown)

Inner leaf (kN per metre) Outer leaf (kN per metre)

Lintel Dimensions

Clearspan - A (mm)* Height of rise - H (mm)* End bearing - E (mm)*

50


The ace of clubs arch lintel enables the architect to fashion aunique window opening that will create the ultimate feature forany room. The ace of clubs arch is formed from three radii thatcan be equal or with the centre arch being greater than theother two.


Ace of clubs arch lintels are available in 10 working days fromreceipt of order and approved drawing.


50

Special Lintels - Ace of Clubs Arch Lintel

Lintel Dimensions

Clearspan - A (mm)* Height of rise - H (mm)*

End bearing - E (mm)* Radius 1 - R1 (degrees)*

Radius 2 - R2 (degrees)* Radius 3 - R3 (degrees)*

R2

R3

H

E A E

R1

Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax

Wall Construction








Inside Only Both Sides NoneNOTE: All times quoted as working days, include delivery, calculated from receipt of order

and approved drawing (where applicable). All products are subject to availability.

NOTE: All times quoted as working days, include delivery, calculated from receipt of orderand approved drawing (where applicable). All products are subject to availability.

If you require furtherinformation pleasetel: 029 2033 7900.Special Lintels - Corner Lintel

Lintel Dimensions

A (mm)* B (mm)* Angle (degrees)*

The mitre and welded corner lintel enables the appearance ofan unspoiled window openings on two perpendicular walls of aroom. Corner lintels come complete with support posts (spigotpost) and base plate. Support posts are available in standardlengths to allow for site cutting to actual requirements.

All Catnic special fabricated lintels, spigot posts and baseplates are hot-dip galvanised after manufacture for complete

protection from corrosion, eliminating the need for on-sitepainting or maintenance.

Corner lintels are available in 10 working days from receipt oforder and approved drawing.


Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax

Wall Construction









53


Lintel Dimensions


Special Lintels - Bull’s Eye LintelThe bulls-eye lintel enables the creation of round, circular andspherical window openings and portholes.


Bulls-eye lintels are available in 10 working days from receiptof order and approved drawing.


E

H

E

A

Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax

Wall Construction









52



Support Posts* (please tick length required).

n/a 1000mm 1500mm

2000mm 2500mm 3000mmSupport posts cut to length on site.

A

Angle°

B

Do not allow for endbearings, this will becalculated by CatnicTechnical Services.

If you require furtherinformation pleasetel: 029 2033 7900.Special Lintels - Corner Lintel

Lintel Dimensions

A (mm)* B (mm)* Angle (degrees)*

The mitre and welded corner lintel enables the appearance ofan unspoiled window openings on two perpendicular walls of aroom. Corner lintels come complete with support posts (spigotpost) and base plate. Support posts are available in standardlengths to allow for site cutting to actual requirements.

All Catnic special fabricated lintels, spigot posts and baseplates are hot-dip galvanised after manufacture for complete

protection from corrosion, eliminating the need for on-sitepainting or maintenance.

Corner lintels are available in 10 working days from receipt oforder and approved drawing.


Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax

Wall Construction









53



n/a 1000mm 1500mm


A

Angle°

B




If you require furtherinformation pleasetel: 029 2033 7900.Special Lintels - Elliptical Arch Lintel

Lintel Dimensions


The elliptical arch lintel enables the creation of a wider,shallower arch opening compared to that offered by thetraditional steeper semi-circular arch. The elliptical arch isformed by multiple arcs each of which is drawn from its owncentre compared to a roman arch which is a semi-circular arcdrawn from a single centre point.


Elliptical arch lintels are available in 10 working days fromreceipt of order and approved drawing.


H

E A E

Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax

Wall Construction









55

Lintel Dimensions

Clearspan - A (mm) Outshot - O (mm)

Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax

If you require furtherinformation pleasetel: 029 2033 7900.Special Lintels - Curved On Plan Lintel

The curved on plan lintel (sometimes known as radius lintel orbow lintel) enables the creation of curved walls with openings.Curved lintels can be manufactured to suit customer specifiedradii.


Curved lintels are available in 10 working days from receipt oforder and approved drawing.


A

O

Wall Construction









54


57


If you require furtherinformation pleasetel: 029 2033 7900.Special Lintels - Parabolic Arch LintelSpecial Lintels - Gothic Arch Lintel

The parabolic arch lintel enables the creation of openings withan artistically distinctive softer curvature than offered by atraditional, elliptical or gothic arch. The parabolic arch isformed by the creation of an arch in the form of theintersection of a cone with a plane parallel to the side of thecone, like a three-centred arch.

To construct a parabolic curve please see the illustration below.


Parabolic arch lintels are available in 10 working days fromreceipt of order and approved drawing.


The gothic arch lintel enables the creation of pointed windowand door openings to complement strong vertical lines, highvaulted ceilings, minimal wall space, and buttressed wallsoften found in Victorian and gothic architecture. Gothic orpointed arches are formed from two segmental arches leaningtogether to form a point.


Gothic arch lintels are available in 10 working days fromreceipt of order and approved drawing.


E A E

H

R

H

E A E

A

DE

F

C

B

R

r

1

Lintel Dimensions

Clearspan - A (mm)* Height of rise - H (mm)*

End bearing - E (mm)* Radius - R (degrees)*

Wall Construction







Lintel Dimensions


Wall Construction







Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax

Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax





56



If you require furtherinformation pleasetel: 029 2033 7900.Special Lintels - Semi-Circular Arch Lintel

The semi-circular arch lintel is the most common featurebrickwork opening providing a classical design line for anywindow or door. Catnic have 10 different size semi-circulararch lintels available from stock. For alternative cavity andmasonry widths please complete the below enquiry form.


Semi-circular arch lintels are available in 10 working days fromreceipt of order and approved drawing.


E A

H

E

Lintel Dimensions


Wall Construction







Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax



59


Lintel Dimensions


Special Lintels - Segmental Arch LintelThe segmental arch lintel enables the creation of an openingwhere the arch whose profile comprises an arc smaller than asemicircle. The segmental arch is made up of part of a circle,the centre of which is below its springing line.


Segmental arch lintels are available in 10 working days fromreceipt of order and approved drawing.


E A E

H

Wall Construction







Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax



58



61

If you require furtherinformation pleasetel: 029 2033 7900.Special Lintels - Splayed Bay Lintel

Lintel Dimensions

A (mm)* B (mm)*

C (mm)* Angle (degrees)*



The splayed bay lintel with bearings projects the wall forwardfrom the confines of the rest of the room to create an openingthat attempts to make use of every last ray of sunshine.Introduced during the Georgian period, made popular inVictorian times and carried on in Edwardian housing the baywindow is a realisation by architects that windows with threeaspects could improve the outlook of living rooms.Splayed bay lintels come complete with support posts (spigotpost) and base plate. Support posts are available in standardlengths to allow for site cutting to actual requirements.

All Catnic special fabricated lintels, spigot posts and baseplates are hot-dip galvanised after manufacture for completeprotection from corrosion, eliminating the need for on-sitepainting or maintenance.Splayed bay lintels are available in 10 working days fromreceipt of order and approved drawing.Please complete the form below and submit to TechnicalServices on Fax: 087 0024 1809 to request a quotation.

Wall Construction







Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax



with returnbearings

60

If you require furtherinformation pleasetel: 029 2033 7900.Special Lintels - Splayed Bay Lintel

Lintel Dimensions

A (mm)* B (mm)*


The splayed bay lintel projects the wall forward from theconfines of the rest of the room to create an opening thatattempts to make use of every last ray of sunshine. Introducedduring the Georgian period, made popular in Victorian timesand carried on in Edwardian housing the bay window is arealisation by architects that windows with three aspects couldimprove the outlook of living rooms.Splayed bay lintels come complete with support posts (spigotpost) and base plate. Support posts are available in standardlengths to allow for site cutting to actual requirements.

All Catnic special fabricated lintels, spigot posts and baseplates are hot-dip galvanised after manufacture for completeprotection from corrosion, eliminating the need for on-sitepainting or maintenance.Splayed bay lintels are available in 10 working days fromreceipt of order and approved drawing.Please complete the form below and submit to TechnicalServices on Fax: 087 0024 1809 to request a quotation.

Wall Construction







Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax




n/a 1000mm 1500mm



n/a 1000mm 1500mm


B

CA

Angle°

B

CA

Angle°






n/a 1000mm 1500mm


63

If you require furtherinformation pleasetel: 029 2033 7900.Special Lintels - Venetian Arch Lintel

Lintel Dimensions

Clearspan - A1 (mm)* Archspan - A2 (mm)*

Height of rise - H (mm)* End Bearing - E (mm)*

The Venetian arch lintel enables the formation of a classicdesign consisting of a three-part window composed of a large,arched central section flanked by two narrower, shortersections having square tops.


Venetian arch lintels are available in 10 working days fromreceipt of order and approved drawing.


R

E Overall Clear Span A1

Arch Span A2

H

E

Wall Construction







Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax



62

If you require furtherinformation pleasetel: 029 2033 7900.Special Lintels - Square Bay Lintel

Lintel Dimensions

A (mm)* B (mm)*


The square bay lintel uses perpendicular returns (90º angle)compared to the splayed bay lintel (greater than 90º angle) tocreate a window opening with three aspects. Square baylintels come complete with support posts (spigot post) andbase plate. Support posts are available in standard lengths toallow for site cutting to actual requirements.

All Catnic special fabricated lintels, spigot posts and baseplates are hot-dip galvanised after manufacture for completeprotection from corrosion, eliminating the need for on-sitepainting or maintenance.

Square bay lintels are available in 10 working days fromreceipt of order and approved drawing.


B

CA

Angle°

Wall Construction







Customer Address

Name*

Address

Post Code Tel*

Email* Fax

* Mandatory Fields

Site Address

Name

Address

Post Code Tel

Email Fax




65

Lintel Soffit Cladding – Type RC and FC

For improved protectionLintel Soffit Cladding also providesextra protection, especially in coastalregions, and in situations where muchof the lintel soffit is exposed.

For improved appearanceAn optional cladding, particularlysuitable for use with PVC-U windows.The cladding was originally designedto give a more aesthetically pleasingappearance to rebated combined boxlintels.

These advantages have now beenextended to cover all flush soffitlintels.

MaterialA PVC-U pre-cut unit, supplied inwhite (FC & RC) or brown (FC only).

Important noteAll external wall lintels fitted with lintelcladding must be installed with aflexible damp proof course (DPC)ensuring that the DPC projects beyondthe front face of the cladding.

Lintel Soffit Cladding type RC & FC, comein 96mm/108mm widths respectively

Lintel Soffit Cladding type RC

Lintel Soffit Cladding type FC


Accessories Soffit Cladding 65Arch Centres 66Stop Ends 67Weep Vents 68External Plaster Key 69

64

AccessoriesCatnic is committed to offer a range of high qualityaccessories to enhance the performance of Catnicsteel lintels and to make their application even easier

64

65

Lintel Soffit Cladding – Type RC and FC

For improved protectionLintel Soffit Cladding also providesextra protection, especially in coastalregions, and in situations where muchof the lintel soffit is exposed.

For improved appearanceAn optional cladding, particularlysuitable for use with PVC-U windows.The cladding was originally designedto give a more aesthetically pleasingappearance to rebated combined boxlintels.

These advantages have now beenextended to cover all flush soffitlintels.

MaterialA PVC-U pre-cut unit, supplied inwhite (FC & RC) or brown (FC only).

Important noteAll external wall lintels fitted with lintelcladding must be installed with aflexible damp proof course (DPC)ensuring that the DPC projects beyondthe front face of the cladding.

Lintel Soffit Cladding type RC & FC, comein 96mm/108mm widths respectively



Lintel Soffit Cladding type RC

66

Lintel ArchCentres – Type AC

For the construction of segmentalarches in brickwork.A vacuum formed arch unit for use overopenings in external cavity walls –traditional and timber frame – providingpermanent centering for brick archconstruction.

Made under licence British Patent No.2063953.

• Allows easy construction of segmentalarches

• Includes integral weep vent

MaterialVacuum formed from HIPS (Satin HighImpact Polystyrene). The underside of theArchCentre incorporates a minimum of 2built-in weep vents. For longer lengthspans additional weep vents are included,at maximum spacings of 900mm.

Installation notesi) Do not use damaged ArchCentres.

ii) Remove the ArchCentre from its protective wrapping. iii) Check that the ArchCentre is correct for application (Refer to

the lintel specification).iv) Ensure the ArchCentre and lintel mounting surfaces are clean

and dry.v) Locate the unit centrally over the opening to determine the

position on the lintel. The front drip section should be trimmed off at the bearing end to allow for thin mortar jointsand to enhance the appearance.

vi) Locate the unit on the lintel at position previouslydetermined, ensuring a tight fit to the edge of lintel toe.

Lintel ArchCentre

Important noteIf used with Catnic soffit cladding, thestraight ends of the ArchCentre (seecross-hatching on illustration, left), whichextend beyond the structural opening,should be removed before proceeding tostage vi. (see below)

This operation can also be carried out toavoid exposing the drip edge of theArchCentre within the mortar joint at thebearing end. Cutting into the main body ofthe ArchCentre should not be carried out.

ArchCentre ArchCentre StructuralCode Span (mm) Opening (mm) Rise (mm)ACA0475 475 450-500 75ACA0625 625 600-650 75ACA0925 925 900-950 75ACA1050 1050 1025-1075 75ACA1225 1225 1200-1250 75ACA1350 1350 1325-1375 75ACA1485 1485 1460-1510 75ACA1625 1625 1600-1650 75ACA1700 1700 1675-1725 75ACA1785 1785 1760-1810 75ACB1975 1975 1950-2000 150ACB2125 2125 2100-2150 150ACA2250 2250 2225-2275 75ACB2325 2325 2300-2350 150ACB2425 2425 2400-2450 150

ACA - 75mmACB - 150mm

ArchCentre Span

NoteSpecial ArchCentres available - for details please call our TechnicalServices Department on 029 2033 7900

66 67

Lintel ArchCentres – Type AC

For the construction of segmentalarches in brickwork.A vacuum formed arch unit for use overopenings in external cavity walls –traditional and timber frame – providingpermanent centering for brick archconstruction.

Made under licence British Patent No.2063953.

• Allows easy construction of segmentalarches

• Includes integral weep vent

MaterialVacuum formed from HIPS (Satin HighImpact Polystyrene). The underside of theArchCentre incorporates a minimum of 2built-in weep vents. For longer lengthspans additional weep vents are included,at maximum spacings of 900mm.

Installation notesi) Do not use damaged ArchCentres.

ii) Remove the ArchCentre from its protective wrapping. iii) Check that the ArchCentre is correct for application (Refer to

the lintel specification).iv) Ensure the ArchCentre and lintel mounting surfaces are clean

and dry.v) Locate the unit centrally over the opening to determine the

position on the lintel. The front drip section should be trimmed off at the bearing end to allow for thin mortar jointsand to enhance the appearance.

vi) Locate the unit on the lintel at position previouslydetermined, ensuring a tight fit to the edge of lintel toe.

Lintel ArchCentre

Important noteIf used with Catnic soffit cladding, thestraight ends of the ArchCentre (seecross-hatching on illustration, left), whichextend beyond the structural opening,should be removed before proceeding tostage vi. (see below)

This operation can also be carried out toavoid exposing the drip edge of theArchCentre within the mortar joint at thebearing end. Cutting into the main body ofthe ArchCentre should not be carried out.

ArchCentre ArchCentre StructuralCode Span (mm) Opening (mm) Rise (mm)ACA0475 475 450-500 75ACA0625 625 600-650 75ACA0925 925 900-950 75ACA1050 1050 1025-1075 75ACA1225 1225 1200-1250 75ACA1350 1350 1325-1375 75ACA1485 1485 1460-1510 75ACA1625 1625 1600-1650 75ACA1700 1700 1675-1725 75ACA1785 1785 1760-1810 75ACB1975 1975 1950-2000 150ACB2125 2125 2100-2150 150ACA2250 2250 2225-2275 75ACB2325 2325 2300-2350 150ACB2425 2425 2400-2450 150

ACA - 75mmACB - 150mm

ArchCentre Span

Figure 2: Lintel Stop End type C90 for use with CGlintels and external solid lintels

Figure 1: Lintel Stop End type CL3 for use withcombined lintels or CH & CX lintels

Lintel Stop Ends – Type CL3 and C90

For eliminating problems associatedwith moisture penetration.Wind-driven rain that penetrates theexternal skin of a cavity wall will,under normal conditions, discharge offthe ends of conventional lintels.

However, with full fill cavity insulation,and in areas of severe exposure, largevolumes of water can be releasedfrom lintel ends into and throughinsulation, creating dampness atinternal reveals. Catnic Stop Endsprevent this problem.

Use CL3 Stop Ends (see Figure 1) forlintels with a fully inclined face within thecavity (combined lintels or CH & CX lintels).

Use C90 Stop Ends (see Figure 2) for alllintels with a 90˚ brickwork/ blockworksupport flange (for use with Cougar CGlintels)

Technical requirementsNHBC Standards: Where fair facedmasonry is supported by lintels: cavitytrays or combined lintels should haveStop Ends.

Zurich Municipal: To prevent waterrunning into the adjacent cavity, cavitytrays should have 75mm deep Stop

Ends located to coincide with theperpend nearest to the end of thecavity tray.

MaterialDurrpolyethylene 6/A for type CL3.BS polypropylene for type C90.

Important noteCavity weep holes should be providedover all lintels fitted with Stop Ends.Stop Ends type CL3 can be applied tolintels designed for cavity wallconstruction with a maximum 100mmcavity, although they will suit cavitiesup to 150mm wide, providing the lintelupstand rises to 225mm.

Installation notesi) Ensure the lintel surface is clean and

dry.

ii) Remove the protective covering to thelength of the anchoring strip on thebottom of the Stop Ends.

iii) Position to suit the perpendicular jointnearest the lintel ends, ensuring thatthe base and back of the Stop End fit snugly into the front upstand of the lintel face.

NoteSpecial ArchCentres available - fordetails please call our TechnicalServices Department on 029 2033 7900

68

Cavity Weep Vents – Type WV

For ensuring removal of water from cavities.DPC and cavity tray installations overopenings require weeps to dischargecollected water from the cavity above.Cavity Weep Vents also assist indraining interstitial condensation,

which can contribute to moisturetracking across the cavity. The designof Cavity Weep Vents type WV alsoprovides an aesthetically pleasingsolution, as the front face of the WeepVent blends unobtrusively into themasonry.

Technical requirementsNHBC Standards 1995: Where fair facedmasonry is supported by lintels: weepholes should be provided at maximum450mm intervals. Each opening shouldhave at least two weep holes.

Zurich Municipal: In localities ofmoderate exposure or worse, or where full cavity fill is used, cavity trays should be adequately drained throughweep holes spaced at no more than 1metre apart, with at least 2 peropening.

MaterialBS Polypropylene in grey, beige andterracotta to match mortar.

Important noteCavity weep holes should be providedover all lintels fitted with stop ends

Cavity Weep Vent type WV available interracotta, beige and grey

Installation notesi) Position in the perpendicular brick

directly above the lintel.ii) Use a minimum of 2 per lintel at

450mm maximum centres.

External Plaster Key

ApplicationSuitable for use with Cougar lintels (CG, CH, CX) timber frame lintels (CTF5, CTF7, CTF9, CN23) and Externalsolid wall lintels (CN71 & CN81).

InstallationExternal plasterkey simply clips into placeand is secured using a full length ofadhesive bead (supplied by others).

StorageUnless required

immediate use on site theproduct should be stored in a

clean dry environment.

Type PKS87Manufactured from galvanised steel to BS EN 10327:2004 of grade DX51D+Z275the external plaster key provides a securekey for a rendered finish.

69

Installation notesi) Ensure plaster key mounting surface

and under side of lintel is clean, dryand free from grease and dirt.

ii) Locate plaster key centrally overlintel (refer to illustration above todetermine the position on lintel).

iii) Apply a 6mm bead of adhesive alongthe full length of plaster key inaccordance with adhesivemanufactureres instructions.

iv) Locate the plaster key against thetoe of the lintel at the positionpreviously determined and rotateonto lintel, (refer to illustration),apply downward pressure to ensurefull adhesive contact to bothsurfaces.

v) Pull surfaces apart to allow adhesiveto dry for 10-15 minutes.

vi) Reposition the plaster key onto thelintel base (as step iv) applyinguniform pressure over the lintellength.

vii) A strong initial bond is achievedwhilst full bond strength results in48-72 hours.

External Plaster Key

ApplicationSuitable for use with Cougar lintels (CG, CH, CX) timber frame lintels (CTF5, CTF7, CTF9, CN23) and Externalsolid wall lintels (CN71 & CN81).

InstallationExternal plasterkey simply clips into placeand is secured using a full length ofadhesive bead (supplied by others).

StorageUnless required

immediate use on site theproduct should be stored in a

clean dry environment.

Type PKS87Manufactured from galvanised steel to BS EN 10327:2004 of grade DX51D+Z275the external plaster key provides a securekey for a rendered finish.

69

Installation notesi) Ensure plaster key mounting surface

and under side of lintel is clean, dryand free from grease and dirt.

ii) Locate plaster key centrally overlintel (refer to illustration above todetermine the position on lintel).

iii) Apply a 6mm bead of adhesive alongthe full length of plaster key inaccordance with adhesivemanufactureres instructions.

iv) Locate the plaster key against thetoe of the lintel at the positionpreviously determined and rotateonto lintel, apply downward pressureto ensure full adhesive contact toboth surfaces.

v) Pull surfaces apart to allow adhesiveto dry for 10-15 minutes.

vi) Reposition the plaster key onto thelintel base (as step iv) applyinguniform pressure over the lintellength.

vii) A strong initial bond is achievedwhilst full bond strength results in48-72 hours.

717070

Installation GuidesCatnic is committed to trouble free installation

Installation Installing a cavity wall lintel 71Installing a lintel supporting a concrete floor 73Installing a timber frame lintel 74

70

Installing a Cavity Wall Lintel

In cavity walls, raise inner and outer

leaves supported by lintel together.†Ensure wall dimensions are correct.

Ensure that masonry overhang

does not exceed 25mm.

Masonry above lintels should be allowed

to cure before applying floor or roof loads.

Ensure lintel is level along its width.

Ensure lintel is fully beddedon bricklaying mortar.

Ensure lintel is level along its length.

Structural opening or clear span.

* For advice on installations where end bearings can be reduced to not less than 100mm, pleasecontact Catnic Technical Services Department on 029 2033 7900.

† Ensure no more than half the safe working load(SWL) is carried by the outer leaf where the lintelcarries an external cavity wall. The wall should alsobe restrained laterally near the top.

Outer LeafInner Leaf Cavity

Ensure a nominal150mm end bearingat each end.*

Do• Install a separate DPC in severe exposure conditions.

A Catnic Cougar Open Back lintel with an additional DPCmembrane installed in accordance with normal practiceprovides the best possible protection (page 76)

• Locate the window/door frame so that the drip on the frontof the lintel projects forward of the drip on the front of theframe. It is good building practice to insert a flexible jointbetween the lintel and the top of the frame

• Ensure that timber floor joists and roof trusses have a fullblock depth between them and the lintel flange on CougarOpen Back Lintels

• Refer to the Catnic ‘How to Install a Lintel SupportingConcrete Floors’ or the Steel Lintel ManufacturersAssociation guidelines (available on request) when using CH& CX Open Back Lintels to support concrete floors

• Consider the use of our soffit cladding for all coastal sites(refer to page 65)

Do not• Use damaged lintels

• Apply point loads without prior consultation. Where theloading or a substantial part of it is applied as concentratedloads, each concentrated load must be supported over alength of lintel of not less than 200mm. In such cases, thetotal loading must not produce bending moments or shearforces greater than those produced by the uniformlydistributed loads specified in the relevant data tables

• Allow blockwork to overhang the lintel by more than 25mm

• Apply concrete floor loads without ensuring that the total loads are checked by a structural engineer, or by CatnicTechnical Services

• Do not cut CG type lintels under any circumstances

• Apply point loads directly on lintel flanges

Ensure lintel isnot damaged.

12515

Prop if necessary

• Check that the correct lintel is beingused according to the manufacturer’slintel schedule/design criteria

• Bed the lintel on full blocks and allowmortar to cure before applyingconcrete floor loads

• Raise both leaves of cavity walltogether and allow masonry to curesufficiently before applying heavyloads. Alternatively prop the lintel iflarge loads are to be applied to freshmasonry

• When using the Catnic CH & CXOpen back range with concretefloors, always ensure that theblockwork is built tight against theinner vertical face of the lintel, andthat a mortar joint is added to the topof the blockwork so that the floorunits have an even spread over theinner flange of the lintel

• Avoid shock loading lintels during theinstallation of concrete floor units andalso any sideways loading whilebeing lifted into position

• Precast flooring units should be laidon a mortar bearing of the full innerleaf wall width and should not be dragged over supports

• Avoid loading newly laid floors withbuilding materials

• Lintels must be built-in as illustrated,ensuring that the blockwork infill iswell-jointed during construction andcompatible with the strength of themasonry above

i.e. one row of blocks should be raised on the inner leaf, thenthree courses of brick on the outer leaf. Wall ties should thenbe installed and another row of blocks on the inner leaffollowed by three courses of brick on the outer and so on.

This process ensures that the lintel flanges are equally loadedand helps prevent rotation.

The open back lintel should also be suitably propped duringconstruction when being used with wide dense blocks.

Propping

• When propping, a horizontal boardshould be placed along the undersideof the lintel soffit, this will prevent anypoint loading, which could causelocalised deformation of the lintel.On small openings a single propshould be placed centrally within theopenings and wedged into place.The prop can be removed after thewall ties are effective. The number ofprops used should be increased forlarger openings.

• The 140 mm dense blocks should beinstalled tight against the inner webof the lintel.

• Therefore, the overhang of blockworkon the lintels inner flange could bemeasured at 15mm.

• If after considering the aboveinformation it is not practicable tocarry out the mentioned constructionprocess on site, we are able to offeran alternative box style lintel in placeof open back. These products aremore robust due to the design of thebox section and therefore, open togreater abuse on site during theconstruction stage.

Installing a Lintel Supporting Concrete Floors

Typical CX Lintel, supporting a concrete floor

Concrete floor

Lintel

Brick outer leaf

Block inner leaf

In addition to the Cavity Wall Installation Guide, please read the following for installing concretefloors with Catnic steel lintels

To ensure the flanges are equally loadedthe Code of Practice should be strictlyadhered to when building the masonry

Open Back - Wide Inner Leaf lintels used with 140mm dense blocks

7372

Installing a Cavity Wall Lintel

Continuoussolid infill block

Prop centrally for spans up to2100mm. For larger spans useprops at 1200mm centres.

7574

Installing a Timber Frame Lintel

• When propping, a horizontal boardshould be placed along the flatunderside of the lintel soffit; this willprevent any point loading, whichcould cause localised deformation ofthe lintel flange.

• On small openings a single prop shouldbe placed centrally within the openingand gently wedged into place.

• The number of props should beincreased for larger openings.Generally props should be installed atmaximum centres of 1 metre.

• The prop can be removed after themortar has cured and the wall tiesbecome effective.

• A timber pinch batten should be fixedat the heel of the timber frame lintel inorder to minimise any rotation.

• Catnic timber frame lintels (e.g. CTF’s) are intended only tosupport an outer skin of brickworkwhere it is tied to an inner skin oftimber frame and must be suitablypropped during construction.

Note: lintels should be suitably propped during construction.Lintels for timber frame construction are supplied with lintelrestraint clips (free of charge), which must be screw or nailfixed to the timber frame to allow for differential movementbetween the timber structure and the brick facing.

Overall lintel length

300

max

300

max

600

max

600

max

Centre of lintel

Position of lintel restraint clips

Screw fixing

Nail fixing

Clearance

Clearance

Lintel code Length (mm) Clip fixingsCTF5, 7 & 9 750-3600 50mm x 3.35mm diam. Plain head galvanised nailsCTF5, 7 & 9 3900-4800 38mm x No10 RD/HD sherardised wood screwsCN23 Up to 4800 38mm x No10 RD/HD sherardised wood screws

Lintel NumberLength (mm) of clipsUp to 1800 31950-3000 53300-4200 74575-4800 9

Typical application showing lintel over window

In addition to the Cavity Wall Installation Guide,please read the following for Catnic timberframe lintel installation

Technical Specifications & Quality AssurancesCatnic is committed to providing architects, designersand builders with useful information and terminologyrelevant to the specification of Catnic lintels

Specifications Where to use a separate DPC 76Quality Assurance 77Technical Information 78The Environment 79Guide to safe storage and handling 80Material Specification 81Glossary of technical terms 82

76

Dornock

Inverness

Aberdeen

DundeePerth

DunbarEdinburgh

Stirling

Alston

Ayr

Lerwick

Glasgow

NewcastleCarlisle

Workington

Stranraer

Belfast

Londonderry

Enniskillen DungannonMiddlesborough

WhitbyDarlington

Ripon

York

Hull

Grimsby

Skegness

Norwich

Hebben Bridge

Doncaster

Lincoln

Nottingham

Colwyn Bay

Skelmersdale

ChesterBangor

Bala

ManchesterSheffield

Macclesfield

Stafford

LeicesterShrewsbury

Birmingham

Hay-on-Wye Northampton Cambridge

Peterborough

Welwyn Garden CityColchesterLuton

LondonStaines

GatwickDover

EastbourneBrightonPooleSouthampton

Aldershot

NewburySwindon

Gloucester

BristolWeston-super-Mare

WatchetTaunton

Barnstaple

SidmouthExeter

Cardiff

Swansea

Brecon

Llanidloes

Llandrindod Wells

Exposure Approximate windzones driven rain

(litres/m2 per spell)

1 (sheltered) Less than 33

2 (moderate) 33 to less than 56.5

3 (severe) 56.5 to less than 100

4 (very severe) 100 or more

To satisfy NHBC and Zurich Municipal technicalrequirements, Catnic lintels only require a separate DPC in severe exposure zones i.e. zones 3 & 4 of the map and as determined by BS 8104

Where to Use a Separate DPC

NHBC Amendments Oct 1992 requirea separate damp proof protection forall lintels in Scotland, Northen Ireland,the Isle of Man and in areas of severeor very severe exposure to drivingrain, as defined under BS 5628 Part 3.The map indicates typical exposurecategories.

In such cases, a cavity tray/dampproof protection should provide animpervious barrier draining wateroutwards. It should have an overallminimum upstand of 140mm, returnedto the inner leaf masonry, and be soshaped that there is not less than100mm vertical protection above apoint where mortar could collect.

Reproduced from BRE report ThermalInsulation: avoiding risks by permission ofthe Controller of HMSO: Crown Copyright. Report available from CRC Ltd on 020 7505 6622

Where exposure conditions or localbuilding regulations demand aseparate DPC, Catnic cavity walllintels not only provide additionalprotection against the elements butalso act as a support and template forthe DPC, making it easier to install,and with less risk of damage. TheDPC should project at least 25mmbeyond the outer face of the cavitycloser and vertical DPC. It shouldprovide drip protection for the doorand window heads, and cover theends of the lintel to ensure moisture isshed clear of the reveals. For allcoastal site applications where thesoffit of the lintel is exposed, the useof a soffit cladding in conjunction witha separate DPC is highly recommendedto improve appearance and extendnormal maintenance periods.

7776

Domoch

Inverness

Aberdeen

DundeePerth

DunbarEdinburgh

Stirling

Alston

Ayr

Lerwick

Glasgow

NewcastleCarlisle

Workington

Stranraer

Belfast

Londonderry

Enniskillen DungannonMiddlesborough

WhitbyDarlington

Ripon

York

Hull

Grimsby

Skegness

Norwich

Hebben Bridge

Doncaster

Lincoln

Nottingham

Colwyn Bay

Skelmersdale

ChesterBangor

Bala

ManchesterSheffield

Macclesfield

Stafford

LeicesterShrewsbury

Birmingham

Hay-on-Wye Northampton Cambridge

Peterborough

Welwyn Garden CityColchesterLuton

LondonStaines

GatwickDover

EastbourneBrightonPooleSouthampton

Aldershot

NewburySwindon

Gloucester

BristolWeston-super-Mare

WatchetTaunton

Barnstaple

SidmouthExeter

Cardiff

Swansea

Brecon

Llanidloes

Llandrindod Wells

Exposure Approximate windzones driven rain

(litres/m2 per spell)

1 (sheltered) Less than 33

2 (moderate) 33 to less than 56.5

3 (severe) 56.5 to less than 100

4 (very severe) 100 or more

To satisfy NHBC and Zurich Municipal technicalrequirements, Catnic lintels only require a separate DPC in severe exposure zones i.e. zones 3 & 4 of the map and as determined by BS 8104

Where to Use a Separate DPC

NHBC Amendments Oct 1992 requirea separate damp proof protection forall lintels in Scotland, Northen Ireland,the Isle of Man and in areas of severeor very severe exposure to drivingrain, as defined under BS 5628 Part 3.The map indicates typical exposurecategories.

In such cases, a cavity tray/dampproof protection should provide animpervious barrier draining wateroutwards. It should have an overallminimum upstand of 140mm, returnedto the inner leaf masonry, and be soshaped that there is not less than100mm vertical protection above apoint where mortar could collect.

Reproduced from BRE report ThermalInsulation: avoiding risks by permission ofthe Controller of HMSO: Crown Copyright. Report available from CRC Ltd on 020 7505 6622

Where exposure conditions or localbuilding regulations demand aseparate DPC, Catnic cavity walllintels not only provide additionalprotection against the elements butalso act as a support and template forthe DPC, making it easier to install,and with less risk of damage. TheDPC should project at least 25mmbeyond the outer face of the cavitycloser and vertical DPC. It shouldprovide drip protection for the doorand window heads, and cover theends of the lintel to ensure moisture isshed clear of the reveals. For allcoastal site applications where thesoffit of the lintel is exposed, the useof a soffit cladding in conjunction witha separate DPC is highly recommendedto improve appearance and extendnormal maintenance periods.

Quality Assurance

BSI KitemarkThe Kitemark is a BSIcertification mark,licensed for use on aproduct afterindependent testing has been carriedout to establish conformity with thestated standard, and satisfactoryassessment of the manufacturingcontrol process has taken place toestablish that such conformity mayconsistently be achieved.

BSI verifies continuing productconformity by periodic producttesting and assessment of themanufacturing control process.

BBA CertificationThe BBA’s Agrémentcertificates have been providingauthoritative and independentinformation on the performance ofbuilding products for over 35 years.Every Agrément certificate containsimportant data on durability;installation and compliance withBuilding Regulations across the UK.

Assessment involves three distinctareas – 1) laboratory testing, 2) siteinspections, undertaken by the BBA’sown inspection Services team and 3)factory production control.

For copies of Catnic’s BBA Certificatesplease visit www.Catnic.com or call uson 029 2033 7900

Technical ConformityCatnic comply with the technicalrequirement of:

• National House-Building Council(NHBC):is the independentregulatory boardand the worlds’leading warranty and insuranceprovider for new homes in the UK.

• Housing Association PropertyMutual (HAPM):with appropriateadjustmentfactors lintels are rated by HAPM assatisfying the ‘35 years to firstmaintenance’ durability rating, laiddown in the ‘HAPM Component LifeManual’.

• Local Authority Building Control(LABC): is dedicated tomaintaining thehighest standard inbuilding design andconstruction. LABC is a publiclyaccountable, independent buildingcontrol provider.

Management System RegistrationIn today’s increasingly competitiveenvironment customers are becomingmore sophisticated and betterinformed. Expectations are growingand businesses need to demonstratecommitment to quality.

As an accredited organisation, we are committed to making continuousperformance improvements in keyareas, such as business efficiencyand risk management, reviewingprocedures and levels of service.

Catnic is a BSI registered firm withquality management system inaccordance with BS EN ISO9001:2000 which provides a set ofprocesses that ensure:

• Clarification and documentation ofpolicies and objectives

• Relating to customers’ requirementsto production with a view toachieving customer satisfaction

• Understanding how statutory andregulatory requirements impact on Catnic and our customers

• Clear responsibilities andauthorities – increasing motivationand commitment

• Reduce waste

• Consistency and traceability ofproducts and services

• High level of internal and externalcommunications

British and European Standards: Catnic’sstandard range lintels are designed andmade to very high quality standards

The products are:• Manufactured from pre-galvanised

steel in accordance with BS EN 10327:2004 of grade DX51Dwith or without polyester coatedfinish.

• Lintels conform to the materialspecifications laid down in BS 5977: Part 2:1983 and BS EN 845-2:2003

• Catnic was the first lintelmanufacturer to be awarded a BSI Kitemark licence and BBA certificate.

CE

RT

IFIE

D

TO BRITISH STAN

DA

RD

BS 5977LICENCE No. KM07234

Certificate No. 91/2638

Catnic’s excellence in quality standardsis internationally recognised

EN ISO 9001: 2000Certificate No. FM14913

78

Technical Information

Structural performanceThe structural data published in theloading tables included in this technicalguide, was achieved in accordance withthe requirements of BS 5977: Part2:1983 and BS EN 845-2.2003.Extensive testing was undertaken at thefollowing test houses:

• The University of Wales, School of Engineering

• The University of Glamorgan,Construction Centre

• Ceram Building Technology, Stoke-on-Trent

Safe working loads (SWL)*, as defined byBS 5977: Part 2:1983 for cavity walllintels refer to uniform distributed loadsapplied in the inner to outer leaf ratios:

• 1:1 For lintels supporting masonryonly

• 3:1 For lintels normally carrying timberfloors

• 5:1 For lintels normally carryingconcrete floors

The CH & CX lintel range refers touniformly distributed loads in the ratio of19:1 when non standard or unusualloading conditions occur.

A lintel should not exceed a maximumvertical deflection of 0.003 x the effectivespan (effective span = distance betweencentre of bearings) when subjected to thesafe working load (SWL).

*The brochure SWL’s are based on thelesser value derived from a serviceabilitydeflection limitation of

Fire testsCatnic lintels have been independentlytested in accordance with the relevantparts of BS476, Methods of Determinationof the Fire Resistance of LoadbearingElements of Construction. Details of thetest results can be found in TRADA(Timber Research and DevelopmentAssociation) Nos. FR254, 275, 659, 863,1662 and RF94015 and FROSI (FireResearch Organisation) No. 5001.

Thermal performanceAll Catnic cavity wall lintels contribute tothe thermal integrity of the building asthey are supplied with an insulated core.The core of the ‘Cougar Open Back’ stylelintels is fully filled with CFC & HCFC freeinsulation to prevent cold voids.

Also, because Catnic cavity wall lintelsare shaped to form a built-in damp proofcourse, partial fill cavity wall insulationcan extend down to the top of the lintel.

This means that the cold voids normallyassociated with separate damp proofcourses are avoided, without the needto install specially shaped insulationbatts behind the DPC.

To achieve the thermal benefits of a Cougar open back or Classiccombined box lintel in accordance withthe ‘robust details’ as referred in theapproved documents: Part L1 and PartL2, the window frame should bepositioned so that the back face of theframe overlaps the inner face of theouter leaf of the cavity wall by aminimum of 30mm.

The standard range of cavity wall lintelsincorporating perforated base plates have been designed tominimise any potential cold bridge pathwithout compromising its structuralintegrity. The unique slotted base platedesign on the underside of the lintelsprovides an effective conductivity notexceeding 30W/mK which satisfies therequirements of the approved documentto support Part L1 & L2 2002 edition.

The Research, Development and Technologybusiness of Corus combines top class innovationand cutting edge technology to deliver ‘metalssolutions’ in a constantly changing world

We use up to the minute technology to expand and improvethe quality of our performance; we continually invest in andupgrade our manufacturing processes and use the latestmethods in process analysis and design

effective span

325[ ] ultimate failure

1.6 (min)[ ]or

SustainabilityCatnic, part of the Corus group ofcompanies, utilises steel from ourEuropean manufacturing operations thathave achieved certification toEnvironmental Management StandardISO14001.

Corus places great emphasis on thecontribution we make to a sustainablesociety and is committed toincorporating the principles ofsustainable development into allaspects of our operations.

Steel itself is 100% recyclable and canbe recycled again and again, withoutdegradation of its properties orperformance. Steel’s excellentmechanical properties, combined withits high strength, contribute to improvedsafety performance. The steel in usetoday will be reused and recycled manytimes in the future. More than 40% ofthe world’s production of ‘new’ steel isin fact made from recycled steel withoutany loss of quality. The current recyclingrate and reuse rate for steelconstruction products in the UK is 94%.

Our products are durable, adaptable,reusable and recyclable. They are

essential to modern life – for examplethey are used in affordable and energy-efficient modern housing. Through ourresearch and development activities, weare continuing to develop products thatgive additional social and environmentalbenefits to our customers and societyas a whole.

Copies of the Corus CorporateResponsibility Report 2007/8 areavailable on request or can bedownloaded at www.catnic.com

Global Warming Potential (GWP)The expanded polystyrene (EPS)incorporated into our pre-insulatedlintels does not use, contain or produceformaldehyde, CFC’s or indeed any socalled soft CFC’s (i.e. HCFC’s andHFA’s).

The product conforms to the MontrealProtocol and has an ozone potential of zero.

The material content and manufactureof EPS has no major negative impacton the environment

The manufacturer of our insulationproduct have quoted a GWP < 5 for thefinished product.

Health & Safety PolicyCatnic actively work towards Corus’own international safety rating systemand have one of the highest scoresamongst all Corus manufacturing sitesin the UK.

• We believe that all our activities canbe undertaken safely and we willnever compromise safety.

• We will conduct our business in a waythat ensures the health and well beingof our employees, contractors and anyperson affected by our activities.

• We know that continuousimprovement of our health and safetyperformance is essential for asuccesful company.

• Everyone in Corus has responsibilityfor their own and others' health andsafety.

• We will encourage a health and safetyculture in Corus.

Copies of the Catnic EnvironmentalPolicy are available on request or canbe downloaded at www.catnic.com

Environmental PolicyCatnic are committed to protecting the environment by minimising the impact of ouroperations and our products through the adoption of sustainable practices and throughcontinuous improvement in environmental performance and control. We believe that respectfor the environment is critical to the success of our business and our aim, therefore, is tocontinuously improve our performance

We consider care for the environment to be essentialboth in terms of our duty to society and to ensure thecontinuity of our business

The Environment

79

SustainabilityCatnic, part of the Corus group ofcompanies, utilises steel from ourEuropean manufacturing operations thathave achieved certification toEnvironmental Management StandardISO14001.

Corus places great emphasis on thecontribution we make to a sustainablesociety and is committed toincorporating the principles ofsustainable development into allaspects of our operations.

Steel itself is 100% recyclable and canbe recycled again and again, withoutdegradation of its properties orperformance. Steel’s excellentmechanical properties, combined withits high strength, contribute to improvedsafety performance. The steel in usetoday will be reused and recycled manytimes in the future. More than 40% ofthe world’s production of ‘new’ steel isin fact made from recycled steel withoutany loss of quality. The current recyclingrate and reuse rate for steelconstruction products in the UK is 94%.

Our products are durable, adaptable,reusable and recyclable. They are

essential to modern life – for examplethey are used in affordable and energy-efficient modern housing. Through ourresearch and development activities, weare continuing to develop products thatgive additional social and environmentalbenefits to our customers and societyas a whole.

Copies of the Corus CorporateResponsibility Report 2007/8 areavailable on request or can bedownloaded at www.catnic.com

Global Warming Potential (GWP)The expanded polystyrene (EPS)incorporated into our pre-insulatedlintels does not use, contain or produceformaldehyde, CFC’s or indeed any socalled soft CFC’s (i.e. HCFC’s andHFA’s).

The manufacturer of our insulationproduct have quoted a GWP < 5 for thefinished product.

Ozone Depletion Potential (ODP)The product conforms to the MontrealProtocol and has an ozone depletionpotential of zero. The material contentand manufacture of EPS has no majornegative impact on the environment.

Health & Safety PolicyCatnic actively work towards Corus’own international safety rating systemand have one of the highest scoresamongst all Corus manufacturing sitesin the UK.

• We believe that all our activities canbe undertaken safely and we willnever compromise safety.

• We will conduct our business in a waythat ensures the health and well beingof our employees, contractors and anyperson affected by our activities.

• We know that continuousimprovement of our health and safetyperformance is essential for asuccesful company.

• Everyone in Corus has responsibilityfor their own and others' health andsafety.

• We will encourage a health and safetyculture in Corus.

Copies of the Catnic EnvironmentalPolicy are available on request or canbe downloaded at www.catnic.com

Environmental PolicyCatnic are committed to protecting the environment by minimising the impact of ouroperations and our products through the adoption of sustainable practices and throughcontinuous improvement in environmental performance and control. We believe that respectfor the environment is critical to the success of our business and our aim, therefore, is tocontinuously improve our performance

We consider care for the environment to be essentialboth in terms of our duty to society and to ensure thecontinuity of our business

The Environment

79


8180

Material SpecificationGuide to safe storage and handling

‘Cougar Open Back’ StylesCG rangeThe lintels are manufactured fromgalvanised steel to BS EN10327: 2004(continuously hot-dip coated strip andsheet of low carbon steels and coldforming - technical deliveryconditions) of grade DX51D & Z275,but with a minimum yield stress of250N/mm2. The lintels are furtherprotected against corrosion by a blackcoloured polyester resin coatingapplied to all external surfaces. Thelintels are fully insulated withexpanded polystyrene bead of density18kg/m3 giving a thermal conductivityof between 0.031W/mK and0.036W/mK.

CH & CX rangeThe lintels are manufactured fromgalvanised steel to BS EN10327: 2004of grade DX51D & Z275 with aminimum yield stress of 250N/mm2.The lintels are further protectedagainst corrosion by a black colouredpolyester resin coating applied to allexternal surfaces of the lintels.

The lintels are fully insulated withexpanded polystyrene boardmanufactured in accordance with BS 3837: Part 1: 2004 (Expandedpolystyrene boards specification forboards manufactured fromexpandable beads). The material isCFC & HCFC free and has an ozonedepletion potential (ODP) of zero.

To satisfy the corrosion protectionsystem of BS 5977: Part 2 and NHBCtechnical requirements, lintelsgalvanised to BSEN ISO1461: 1999must be installed with a separatedamp proof course.

External Solid Wall/ Internaland Timber Frame StylesCN and CTF rangeThe lintels are manufactured fromgalvanised steel to BS EN 10327:2004 (continuously hot-dip coatedstrip and sheet of low carbon steelsand cold forming - technical deliveryconditions) of grade DX51D & Z275but with a minimum yield stress of250N/mm2. The lintels (excludinginternal lintels CN92 and CN102) arefurther protected against corrosion bya polyester resin coating applied to all external surfaces of the lintel. Thelintels are insulated (where applicable)with expanded polystyrene board to BS 3837 Part 1: 2004 (expandedpolystyrene boards – specification forboards manufactured fromexpandable beads).

CXL rangeThe lintels are manufactured from auniversal beam section and 6.0mmstructural grade steel plate GradeS275 to BS EN 10025-2:2004 andhot-dip galvanised after manufactureto BS EN ISO1461:1999.

CNZ rangeThe lintels are manufactured fromgalvanised steel to BS EN 10326:2004 (continuously hot-dip coatedstrip and sheet of structural steels -technical delivery conditions) of gradeS250GD & Z600. All external lintel cutedges are treated with a corrosionresistant paint.

Stainless Steel rangeThe lintels are manufactured fromAustenitic Stainless Steel, grade304s15 to BS EN 10088-2-1.4301.

Feature Lintels

CCA and CCB rangeThe lintels are manufactured from3.0mm structural grade steel plate ofgrade S275 to BS EN10025-2:2004and hot-dip galvanised aftermanufacture to BS EN ISO1461:1999.

Storage• All products should be stored in a

clean and dry environment on a firmeven surface, clear of the ground.

• Single lintels should be stored onpallets or suitable racking andprevented from being accidentallydislodged.

• Remove all metal strapping with careand discard safely and responsibly.

Handing• Gloves should be worn to avoid injury

from any sharp edges.

• When lifting or carrying a lintel, undertake a personal risk assessmentpaying attention to the size andweight details found on the productlabel.

• Processes such as welding, burning,cutting or grinding can result invaporising the metal or generatingairborne particles that may presentadditional hazards.

Application• Do not use damaged goods.

• Refer to Installation Guides detailedon page 70.

Disposal• When disposing of any Catnic

products or packaging, dueconsideration must be given to theenvironmental impact of the methodof disposal.

Control of Substances Hazardous to Health Regulations 1994 (COSHH)

• All products are considered non-hazardous to health under normalconditions of use.

• Copies of COSHH sheets areavailable on request

All products should be used inaccordance with their specificinstructions to prevent failure

81

Material Specification

‘Cougar Open Back’ StylesCG rangeThe lintels are manufactured fromgalvanised steel to BS EN10327: 2004(continuously hot-dip coated strip andsheet of low carbon steels and coldforming - technical deliveryconditions) of grade DX51D & Z275,but with a minimum yield stress of250N/mm2. The lintels are furtherprotected against corrosion by a blackcoloured polyester resin coatingapplied to all external surfaces. Thelintels are fully insulated withexpanded polystyrene bead of density18kg/m3 giving a thermal conductivityof between 0.031W/mK and0.036W/mK.

CH & CX rangeThe lintels are manufactured fromgalvanised steel to BS EN10327: 2004of grade DX51D & Z275 with aminimum yield stress of 250N/mm2.The lintels are further protectedagainst corrosion by a black colouredpolyester resin coating applied to allexternal surfaces of the lintels.

The lintels are fully insulated withexpanded polystyrene boardmanufactured in accordance with BS 3837: Part 1: 2004 (Expandedpolystyrene boards specification forboards manufactured fromexpandable beads). The material isCFC & HCFC free and has an ozonedepletion potential (ODP) of zero.

External Solid Wall/ Internaland Timber Frame StylesCN and CTF rangeThe lintels are manufactured fromgalvanised steel to BS EN 10327:2004 (continuously hot-dip coatedstrip and sheet of low carbon steelsand cold forming - technical deliveryconditions) of grade DX51D & Z275but with a minimum yield stress of250N/mm2. The lintels (excludinginternal lintels CN92 and CN102) arefurther protected against corrosion bya polyester resin coating applied to all external surfaces of the lintel. Thelintels are insulated (where applicable)with expanded polystyrene board to BS 3837 Part 1: 2004 (expandedpolystyrene boards – specification forboards manufactured fromexpandable beads).

CXL rangeThe lintels are manufactured from auniversal beam section and 6.0mmstructural grade steel plate GradeS275 to BS EN 10025-2:2004 andhot-dip galvanised after manufactureto BS EN ISO1461:1999.

CNZ rangeThe lintels are manufactured fromgalvanised steel to BS EN 10326:2004 (continuously hot-dip coatedstrip and sheet of structural steels -technical delivery conditions) of gradeS250GD & Z600. All external lintel cutedges are treated with a corrosionresistant paint.

(Excludes CNZ97D which is furtherprotected against corrosion by apolyester resin coating applied to all external surfaces of the lintel).


The lintels are manufactured fromAustenitic Stainless Steel, grade304s15 to BS EN 10088-2-1.4301.

Feature Lintels

CCA and CCB rangeThe lintels are manufactured from3.0mm structural grade steel plate ofgrade S275 to BS EN10025-2:2004and hot-dip galvanised aftermanufacture to BS EN ISO1461:1999.


Special Internals Meter Boxes Replace Steelwork

8382

Glossary of technical terms

LintelA structural member spanning anopening in a wall.

Clear span or Clear openingThe clear distance between lintel supports.

Safe working load (SWL)The total uniformly distributed load(UDL) that the lintel is designed tosupport, whilst providing an appropriatesafety factor.

Triangulated masonry loadA load assessed in accordance with theguidelines of BS 5977 Part 1:1981 andAMD 4796:1985

Uniformly Distributed Load (UDL)A load that is uniformly spread along theentire length of the lintel.

Point loadThe load applied from a single membersuch as a steel beam or girder truss. Itshould be spread over an appropriatearea so that the limiting design valuesare not exceeded.

Moment of inertia (Ixx)Represents the moment of inertia orsecond moment of area of the lintelsection about a horizontal axis throughthe lintel centroid indicating the stiffnessof a lintel under a given load andindicative of the lintel shape. The greaterthe Ixx level, the stiffer the lintel will beand hence the less a lintel will deflect.

Deflection (δ)Vertical/horizontal displacement of thelintel due to bending about thevertical/horizontal axis.

Modulus of elasticity (Zxx min)The section Modulus of the lintel abouta horizontal axis, when multiplied by thepermissible working stress, the resultantvalue is the serviceability moment.

Serviceability reactionThe permissible load at an end supportwithin the working load capacity of thelintel webs.

End bearingThe bearing length at lintel supports.

Site

Address

Post Code Tel

Email Fax

Lintel Requirements*

Catnic Technical Enquiry Request Form

Is a separate damp proof course to be installed? Yes No

Special Requirements (eg. send to Site/Merchant etc.)

Please include the following (please tick)

NOTE: IT IS IMPORTANT FOR A QUICK TURNAROUND THAT ALL BOXESARE COMPLETED CORRECTLY BY REFERRING TO THE DRAWINGSBEFORE SENDING TO OUR TECHNICAL SERVICES DEPARTMENT

Please indicate any fairfaced internal areas on drawings

Catnic endeavor to return enquiries at the soonest opportunity. If your enquiry is urgent please contact TechnicalServices on 029 2033 7900.

Please ensure that the essential information (indicated in red) is provided, to enable a quick turnaround.

Please return on Fax: 087 0024 1809

Customer

Address*

Post Code* Tel*

Email* Fax

Customer

Name*

Date

Please indicate whether outer leaf support is required at eaves level Yes No

* Mandatory Fields

Wall Construction (please fill in dimensions)

OUTER CAVITY INNER

Type Width Width Between Type Width(mm) Masonry inc. insulation (mm)

Brick Brick

Stone Dense block

Dense block Lightweight block

Lightweight block Medium block

Medium block Timber frame

Steel frame

Plans/dimensions Elevations (all)

Sections (all) Site plan (for summary)

EITHER Suspended floor carcass timber Roof carcass (for girder trusses)

OR Suspended concrete floor span directions Structural engineers steelwork arrangements

Attic truss carcassing

Technical Services

029 2033 7900Fax this enquiry to

087 0024 1809

84

Notes

85

For more information aboutthese products, please callCatnic on 029 2033 7900 for a brochure

LintelsPioneers of the steel lintel for morethan three generations with areputation for superior quality,reliability and backed by excellencein service.

Steel LintelsSpecial LintelsStainless Steel Lintels Free design service for bespoke feature lintelsFree scheduling service

SteelworkA selection of steelwork beams,columns and channels for whenloading conditions exceed ourstandard range of lintels

Universal beams Universal columnsParallel flange channels

Steel Plasterer’s BeadsPrecision engineered and simple touse to create, edges, corners andjoints that are resistant to chipping,cracking and impact damage.

Galvanised steel plaster and render beadsStainless steel plaster and render beads

PVC-U Plasterer’s Beads Light, rigid, non-corrosive, andeasy to use material, that offers a cost-effective way to create,edges, corners and joints that are resistant to chipping, cracking and impact damage.

Plaster and render beads

Expanded MetalEasy to use, versatile and perfectlyformed expanded metal productsbenefit from our long experience ofusing steel in construction.

Metal LathCoil MeshArch formers

Wall Starter KitsSTRONGHOLD Wall Starter Kitsare a simple yet effective systemfor tying new masonry walls toexisting walls.

Stainless steel wall starter kitsoffering superb corrosionresistance.PVC Coated wall starter kitsgalvanized steel for durablecorrosion resistance.

Cavity Wall TiesHigh quality stainless steel wall tiesfor ease of use and a long life.

Ties for brick to blockconstructionTies for brick to timberconstruction

QwikpostErecting a new boundary or repairing a gale-damaged fencehas never been easier with the Catnic's durable andaffordable fence support systems.

Garden fence post spikesRepair spikesBolt-down supportsConcrete-in postsPost extendersArris brackets, U-clips and Z- clips

- much more than just Lintels...

87

Lintel Product Selector

Catnic

December 2008

December 2008

Cl/Sfb

UniclassL325:P4142

EPICF631:X442

(31.9) Hh2

87 87

Catnic is a Corus Group company. Furtherinformation can be found on the Corus website atwww.corusgroup.com

Care has been taken to ensure that this informationis accurate, but Corus Group plc, and itssubsidiaries, does not accept responsibility orliability for errors or information which is found tobe misleading.

This publication was printed by a Corus approvedsupplier that complies with ISO 9001, ISO 14001and OHSAS 18001 accreditation. Paper used isRegency Satin, which is manufactured from ECF(Elemental Chlorine Free) pulp sourced fromcertified or well managed forests and plantations,inks used are vegetable based.

Copyright 2008 Corus

www.catnic.com

CatnicPontypandy Industrial EstateCaerphillyCF83 3GLTelephone 029 2033 7900Facsimile 029 2086 7796

C03:30000:UK:11/2008

PDA8753/05

Photographs are supplied courtesy of Andersen Windows/Black Millwork,Barrington Homes, Taylor Wimpy PLC, Williams Lester Architects