P R E S 1 R E S S E D

l W

1 I N T E 1 s

YOU DESERVE THE BEST. AT ROBESLEE WE'RE

DETERMINED TO MAKE SURE YOU GET IT.

Choose Robeslee and you get light, strong lintels built

to BSS977.

You get steps, cills and copes with the fine quality that

only hand-made craftsmanship can ensure.

And you get speciality products, custom built to your

exact needs.

What's more, you get the confidence of dealing with a

quality assured company.

On top of all of this, we offer genuinely competitive

prices too. Our factory is the largest lintel production unit in

Scotland - by far. So our economies of scale mean low prices

to you.

And it's well placed, just minutes from the heart of the

country's motorway network - so wherever your site is, it's

within easy reach of Robeslee.

ROBESLEE CONCRETE IS USED IN MANY CONSTRUCTION PROJECTS

THROUGHOUTTHECOUNTRY.

A T 0 W

REFURBISHMENT PROJECTS THROUGHOUT

BRITAIN .

4

P

~

1 I N T E 1 S P R E S T R E S S E D

.-I COMPUTER CONTROLLED MIXING ENSURES CONSISTENT PRODUCT QUALITY TECHNOLOGY,

SYSTEMS, S K I LLS,

COMMITMENT, AND

LOW-PRICES, ALL PART OF

ROBESLEE,

JACKING THE BEDS TO ENSURE PRECISE TENSIONS IN OUR PRE-STRESSED LINTELS

W E R

I A T ROBESLEE QUALITY IS BUILT ON TECHNOLOGY.

3 u r production line - the longest for pre-stressed lintels i r

Scotland - bristles with innovative features. Many are built tc

our own specification and design so we can guarantee the

highest quality at the lowest cost.

Computer-controlled batching means mixture and

consistency remain the same. Batch after batch after batch.

And in our steps and cills facility, skilled craftsmen utilise

the most advanced machinery. Again, much of it is custom

built for Robeslee.

All production is co-ordinated and costed using advanced

software - so both lead times and prices are cut to the bone.

Technology, allied to superb craft skill and an unerring

commitment to customer service - these are the foundations

of Robeslee Concrete.

This brochure is part of our service to you. Over the page

you will find full details of our entire product range.

OUR CUSTOM BUILT PLANT AND MACHINERY

EXTRUDES THE CONCRETE AND CURES

IT USING OUR UNIQUE HEAT TECHNOLOGY

F S T R E N G T H

COMPOSITE LINTELS TYPE A /100170mmj Permissoble U.D.1. in kN/m per loyer of brickwork

600 900 1200 1500 1800 2100 00

Without Brickwork 9.00 6.37 3.86 2.58 1.85 1.39 1.08

1 Layer of Brickwork 10.50 9.00 7.01 5.00 2.75 1.62 1.31

2 Layers 12.00 10.21 9.50 8.00 4.38 2.75 1.46 1.35 1.31

3 Layers 16.25 12.50 10.60 9.37 5.75 4.44 2.50 2.25 2.00

5 Layers 30.00 25.80 20.21 15.37 12.00 8.00 4.75 4.50 4.25

t'ermissoble 0.D.l. in kN/m per loyer of brickwork

NON-COMPOSITE LlhlTELS Permissoble U.D.l. in kN/m

CLEAR SPAN (mm) 900 1200 1500 1800 2100 2400 2700 3000 3300 3600 3900

- 30.10 20.00 13.40 9.58 7.20 5.17 3.70 2.74 2.09 1.62 1.29

54.70 38.10 29.20 23.70 19.90 17.20 14.70 12.10 10.00 8.51 7.29

25.00 19.30 14.20 10.20 7.65 5.95 4.77 3.90 -

CdlMP6SlTE LINTELS I TYPE A (IOOX70mm) TYPE B (145X70mm) 1 TYPICAL APPLICATIONS

rn Composite lintels, Type A and Type B, are best used in conjunction with

brickwork or blockwork - see tables for loadbearing capacities.

‘I. It is essential that the first two layers of brickwork, or one layer of

blockwork, are laid with special care and that the mortar joints both

vertical and horizontal are properly filled, leaving no voids.

(1:3 cement, sand mortar is recommended).

2. Building blocks may be used if they are solid and have a minimum

crushing strength of 3.0N/mm2

3. In lintels over 1.500m props must be used at the quarter points until

mortarwork has matured.

4. Where a D.P.C. is used it must be placed over the second layer of the

blockwork - see sketch detail.

5.Minimum bearing of 150mm each side, o r as directed by the

structural engineer.

These lintels are designed to take direct imposed loads. Rafters, wall

plates and floor joists may be accommodated as directly imposed

loads - see tables for loadbearing capacities.

BEARING: Minimum of 15Omm each side or as directed by the

structural engineer.

PROPPING: Propping is not required with this type of lintel.

BRICKWORK: Non-composite lintels d o not require brickwork

bonded to them. Point loads from girders, trusses, steel beams ect.

require to be referred to our Customer Advisory Service.

POSITIONING: Lintels must be placed with wire in correct position.

Lintels are marked top.

ORDERING: All sizes listed are normal stock sizes.

All lintels are designed in accordance wzth - BS 5977: Part 1 : 1981,

BS 8110: Part I : 1985, BS 8110: Part 2: 1985.

Concrete used I S Grade 50. Fire resistance is 1 hour (ref BS 8110.1985, Part 2, Section 4).

Fire resistance can be improved by the application of non-combustible finishes.

The euoluhon of new designs i s contznuous, and information I S sublect to change without

notice. Customers should check with the supplier to ensure that they have the latest details. No liability or responsibility o f any kind (including liabzkty for negligence ) is accepted in

respect o f advzce, recommendations or specifications supplied by the company, its Servants or its Agents.

BS 5977: Part 2: 1983,

I Y

IT A

TYPE S I SECTION 175 X 75 - 50 X LENGTH.

TYPE S2 SECTION 21 5 X 75 - 50 X LENGTH.

SPECIAL SECTIONS MADE TO CUSTOMERS DESIGN AND SPECIFICATIONS.

EPS Cost in fhree rfnndnrd serfions -

ST1: LIdppi x 300 x 150

sa? LI" x 300 x 200

SPECIAL SECTIONS MADE TO CUS'I'UMERS DESIGN AND SPECIFICATIONS.

1 COPES dvnilnhle in plaiii concrete, toloured or exporedaggregate finishes.

I r A

I

SINGLE WEATHERED DOUBLE WEATHERED

TYPE WIDTH '"HEIGHT LENGTH

SW1 175 75/50 900 SW2 225 75/50 900 SW3 300 751 50 900 SW4 350 751 50 900

TYPE WIDTH 'H'HCIGHT LENGTH

DWl 175 75/50 900 DW2 225 751 50 900 DW3 300 751 50 900 DW4 350 751 50 900

SPECIAL SECTIONS MADE TO CUSTOMERS DESIGN AND SPECIFICATIONS.

- 1

A A

A A

R O U N D TOP

HEIGHT WIm LENGTH

152 51 900

FIAT TOP

HEIGHT WIDTH LENGTH

205 51 900

T-BEAM FLOORS

STANDARD CENTRES SECTIONS Maximum Spuns fml for imposedhmd kN/d I

SINGLE 520 mn/d1

SINGLE 408 ~.9kN/d1 L

DOUBLE 644 (z.zkn/di

The above table shows maximum clear spans in metres for the Robeslee T42 Floor Beam (125x155)

under uniformly dis t r ibuted live loads using 1350 kg lm ' solid blocks.

An al lowance of 1 2 0 kN1m' for finishes has been made when calculating the table .

Block cut to suit

1 Split course by

Slip blocks or split course under infill block at walls

DPC by builder

1

builder

a

lOOmm block

Main loadbearing walls built over support walls

Additional beams below walls depending upon spans etc.

TECHNICAL INFORMATION The T42 Floor Beam, combines concrete beams and infill blocks to provide a highly effective and easy to install flooring system.

The T42 Beam is nominally 155 deep and weighs 40kglm. It is manufactured using concrete with i

strength of 50 Nlmm'.

inflll Blocks Infill blocks can be any standard building blocks (440x215~100) complying with BS6073:Part 1-1981. They must have a minimum density of 1350 kglm' and have 3.5 Nlmm' - minimum strength. For increased sound resistance we recommend using blocks with a density of 1800 kg/m'.

Bearings All beams should be placed perpendicular to the end supports unless otherwise shown. Each beam requires a minimum end bearing of l00mm to each end when supported by brickworklblockwork and 75mm when supported by steelwork.

Grouting A 3 : l sand:cement should be brushed into the joints between the beams and the blocks.

Floor Flnirkes When laid the floor can take a wide variety of finishes. We would recommend the use of a sand:cement levelling screed before the application of final finishes. Garage floors require a 50mm concrete screed using a Grade 25 concrete and sui table reinforcement.

Cut Blocks All blocks are to be cut using suitable mechanical means to leave a clean, vertical square edged face.

Slip Blotks Slip Blocks 440 x l0Ox 40 (nominal) are used around the perimeter of the floor to make up the difference in level between the underside of the blocks.

krvlce Holes Infill blocks may be omitted as necessary to accommodate services.

Air Vents Void ventilators are required by the NHBC and the spacings may vary. Please consult vent manufacturers for details and supply.

Handling Care should be taken to ensure all beams are lifted horizontally. Beams should not be lifted upside down or allowed to rotate while being handled.

Camber As the beams are made from prestressed concrete they have slight upward camber . Due al lowance must b'e made for this in determining finishes an overall floor thickness.

The T42 Floor beam has been designed using our 'STAR' technology system (in accordance with BS 5977 Part 1: 1981 and Part 2 1983 and BS 8110 Part 1: 1985 and Part 2: 1985) and is manufactured using an advanced extrusion method a t ou r factory in Kirkintilloch.

The T42 Floor beam can be made to any required length up t o 6 metres within given limits.

Robeslee offer a free technical and computer aided design service ( te lephone 0141 775 2677) to assist you in the use of the T42 Floor Beam. The service provides comprehensive details of floor layouts, working drawings and quantity requirements.

DPC