special preliminary remarks application substructure ... · special preliminary remarks application...

of 12 Version: June 2016

Special preliminary remarks

Application In accordance with DIN 68800-1 and DIN 68800-2, this is a structure with the utility class GK 0.

Substructure Post-and-beam structure made of timber, consisting of glulam as per DIN 14080 in conjunction with DIN 20000-3, glulam as per German "abZ" approval or ETA, or of laminated veneered timber as per DIN EN 14374.

Insulating glass elements The insulating glass elements used and to be installed must have the "CE" symbol as per

EN 1279-5 and EN 13022-1 (Bonded glazing, Part 1, Glass products for SSG systems,

load-bearing and non-load-bearing single and multiple glazing).

Glass

Clear, transparent base glass types with maximum colour neutrality must be used.

Connecting strips

Only connecting strips made of birch veneer plywood as per EN 636 "S", as per EN

13986 (EN 636) with appearance class S(II) as per EN 635-2, minimum thickness 12 mm,

minimum bulk density 420 kg/m³, surface twice sanded on all sides (grain 120 and grain

180) EN 635-2 quality S(II), quality of adhesion surface E. Only connecting strips from a

company externally monitored and approved by UNIGLAS GmbH & Co. KG may be

used. For the external inspection, only testing and inspection bodies listed in the current

NANDO list and accredited for timber as a material are accepted. The connecting strip

must as a rule not be glued on free of interruptions over the entire edge length of the

glass. The maximum lengths of the individual strip sections depend on the pane format

and the effects and can be taken from the tables of the system structural analysis.


Thick-layer varnish

The connecting strip must have a thick-layer varnish consisting of a water-based and

pigmented wood-protecting impregnation made by Adler, A-6130 Schwaz, "ADLER

Aquawood TIG Weiss 51253 ff", required application quantity 200 g/m², a water-based

intermediate coating of "ADLER Aquawood Spritz-Intermedio 53663" or ADLER "Acryl-

Spritzfüller 41002", required application quantity 125 to 150 g/m², and a water-based and

pigmented top coat of "ADLER MS-Color grau 43902", required application quantity 250

to 300 g/m² (wet film thickness 250 to 300 µm), to be used in accordance with the

technical leaflets provided by ADLER-WERK Lackfabrik, 6130 Schwaz, Austria. The

compatibility of the described thick-layer varnish with OTTOCOLL S 660 has been

verified. The precise specifications and working instructions for coating the connecting

strips are known to the suppliers of the strip. However, the adhesion area must be

completely free of any coating. Over-coating and subsequent removal by milling is not

permitted.

Wood screws

For screwing the TGC elements to the post-and-beam timber sub-structure, only anti-

corrosion wood screws of dia. ≥ 5 mm; length ≥ 70 mm with "abZ" approval or as per DIN

1052 are permitted, e.g. Würth Assy 3.0 wood screw – 5.0 / 70 mm countersunk head

with shank, galvanized or yellow-passivated: abZ number Z-9.1-514

Works certificates and tests

Compliance of the connecting strip "veneered beech plywood EN 636-3 "S as per EN

13986 (EN 636) of appearance class S(II) as per EN 635-2, minimum thickness 12 mm,

minimum bulk density 420 kg/m³, the surface treatment, maintaining the wood moisture

content of 13% ± 2%, the coating structure of the thick-layer varnish and the coating

thickness must be confirmed to the manufacturer of the bond by a factory certification

"2.1" as per DIN EN 10204:2005-01.

Due to the load-bearing edge connection, the bond in insulating glass may only be made

by an externally monitored adhesion-applying body (AoC Level 1). Evidence of the last

two test reports must be submitted upon request.

Sustainability certificate (EPD)

For the facade system, in the event of an order a valid "Environmental Product

Declaration" as per DIN ISO 14025 and EN 15804 must be submitted as a basis for

building certification according to the DGNB system, LEED, BREEAM etc.


Facade dimensions and applicable standards

EN 1991-1-1ff and EN 1991-1-1 NAe For construction projects in Germany, the necessary glass thickness, as well as evidence of the load-bearing bond for the SSG (structural sealant glazing), must comply with DIN 18008-1 and 18008-2, ETAG 002, "abZ" approval No. Z-70.1-226 for UNIGLAS FACADE and the relevant applicable technical regulations of DIBt and any possibly relevant building standards. The established building regulations and standards in each respective federal state of Germany shall take precedence. In Austria, dimensioning observes ÖNORM B 3716 in conjunction with the relevant applicable national standards and legal provisions. For construction projects in countries outside Germany and Austria, the local established building regulations and standards shall apply.

Within the jurisdiction of European standards, the actions in accordance with the corresponding national versions of EN 1991-1-1ff and their national annexes must be applied. If the EN 1991-1-1ff standards have not yet been implemented by building authorities, the corresponding national standards must be observed.

The building height is _____ m above sea level, in wind zone ______, inland, postcode/zip – region: ________ ________

Dimensions of the building b x l x h in m __________________ Exterior walls are not permeable. DIN 1961 The general contractual terms and conditions for the execution of construction works (VOB/B) and the general technical contractual terms and conditions (VOB/C) shall apply in their latest versions. ÖNORM A 2060 and ÖNORM B 2110 The general provisions of a contract for services and construction ÖNORM B 2227 Glass works - work contract

DIN 4108 The thermal transfer coefficient of the facade Ucw is specified in the performance

description.

DIN EN 20140 The calculated value of the evaluated sound insulation value Rw,R according to

Table 40 in DIN 4109/A1, January 2001 version, for the facade element is

requested in the performance description.

EN 636

Plywood - requirements


DIN 18361

For roof glazing, laminated safety glass must be integrated in the lower pane in

divergence from VOB/C DIN 18361.

Regulations

Technical regulations must be observed for the glazing design. The most important regulations are listed below and are valid in the corresponding current versions. - General technical approval abZ Nr. Z-70.1-226 for UNIGLAS FACADE and/or approval

on a case-by-case basis for the project. - System description for the design and manufacture of UNIGLAS for UNIGLAS

FACADE - UNIGLAS glazing guidelines, latest version - Guidelines of ift (institute of window technology), Rosenheim - Guidelines of the "Institut des Glaserhandwerks für Verglasungstechnik und

Fensterbau", Hadamar - Passive house-suitable components of "Dr. W. Feist Passivhausinstitut", Darmstadt - Standards and technical regulations introduced by building authorities - Guidelines for assessing the visual quality of glass for the building industry, issued by

the Technical Advisory Board of "Institut des Glaserhandwerks für Verglasungstechnik und Fensterbau", Hadamar and by the Technical Committee of Bundesverband Flachglas e.V., Troisdorf *)

- BF Technical Guide 006 "Visual guidelines for systems in cavities between panes" issued by the Technical Committee of Bundesverband Flachglas e.V., Troisdorf

- BF Technical Guide 006 "Guidelines for assessing the visual quality for systems in multi-pane insulating glass" issued by the Technical Committee of Bundesverband Flachglas e.V., Troisdorf

*) in Austria, contrary to the "Guidelines for assessing the visual quality of glass for the

building industry", ÖNORM B 3738 Plate glass in the building industry - Insulating

glass - Requirements in visual quality shall apply.

Technical data

- The technical data and functional values indicated are based on information from base

glass manufacturers and are determined on the basis of each applicable product standard.

- The functional values determined by test certificate refer to test specimens in the standard dimensions intended for the test.

- Corresponding divergences from the declared values occur due to the reliable tolerances of incoming products.

- Lighting and radiometric parameters must be determined in accordance with EN 410. - The thermal transfer coefficient Ug value must be calculated with a validated

programme in accordance with EN 673. The validation must come from a notified body approved by DIBt and/or one listed in the Nando list. Test certificates in accordance with EN 674 or 675 shall only be approved in justified, exceptional cases due to the insufficient comparability of values in accordance with EN 1279-5.

Fitting precision


Contrary to DIN 18202:2013-04 and DIN 18203-3:2008-08, the fitting inaccuracy

(dimensions) of the post-and-beam structure is max. ± 2 mm (=> maximum tolerance 4

mm) relative to the reference point of a reference axis both in height and in the axes. The

offset of the posts from the beams at the level of the insert elements must not exceed ±

0.5 mm.

Beam axis 2

Beam axis 1 Beam axis 0

Post axis 0 1 2 …. n

Example of fitting inaccuracies for nominal dimension transgression with the post (beam dimensions h arise parallel to reference point = post axis 0 / beam axis 0):

Instructions for use in tender specifications for UNIGLAS FACADE:

The performance limit is the glulam timber post-and-beam structure to be provided by

the customer.

The minimum timber quality of the structure must correspond to grade GL 24 for glulam timber. The minimum width of the post / beam is 60 mm. Other performance limits in the variant with post-and-beam structure provided by

others are the lateral building connections, as well as connections to the base, eaves

or fascia, including insulation and cladding with flashings, as well as exterior sun

protection.

With the variant with complete provision of a facade including the glulam post-and-

beam structure, the performance limit is the lateral building connection, as well as

connections to the base, eaves or fascia, including the edging sections as detailed,

insulation and cladding with flashings.

Performance description

b ≤ n ∙ Achssollmaß ± 2 mm

h ≤

n ∙

Ach

sso

llmaß

± 2

mm


I. Planning services

Item 1: Preparation of a verifiable structural analysis of the post-and-beam

structure of wood. In detail, the limit conditions of load-bearing capacity

and the utility of the posts, the beams, their connectors and their

connections to the ceiling slabs of the building for all effects as per EN

1991-1-1, 3 and 4 and their national annexes for the validity area of the

building location must be verified. The submission of a system structural

analysis is also permitted by way of evidence, in its entirety or in

excerpts. gbu project No.13077 Rev.10-2016-04-05.

1 Standard rate EUR ………………..

Item 2: Preparation of a verifiable structural analysis of the TGC elements. In

detail, the glass thicknesses of the insulating glass elements, the load-

bearing insulating glass edge connection for the loading case of wind as

per EN 1991-1-1, -3 and -4, and their national annexes for the validity

area of the building location, as well as climatic loads as per DIN 18008-

1, the individual lengths and the adhesive joint of the connection strip

with additional consideration of the effects from temperature and wood

moisture changes, dead weight transmission and the mechanical pane

securing devices starting at 8 m above ground must be determined. For

dead weight transmission of the insulating glass and verification of the

pane securing devices, the requirements set forth in abZ No. Z-70.1-

226 must be taken into account. The submission of a system structural

analysis is also permitted by way of evidence, in its entirety or in

excerpts. gbu project No.13077 Rev.10-2016-04-05.


Item 3: Determination of the thermal transfer coefficient Ucw of the complete

facade


Sub-total for I. Planning services EUR ………………..


II. Post-and-beam structure of wood

Item 1: Glulam supplied planed smooth and chamfered.

Wood type ……….. as per ……….

…… m³ each EUR ………….. EUR ………………..

Item 2: Setting, positioning and laying of glulam in Item 1 as post-and-beam structure

with reduced tolerances (cf. preliminary remarks). For connections of the

beams to the posts, concealed ones must be used.

…… m³ each EUR ………….. EUR ………………..

Item 3: Allowance for chemical wood preserver as per Item 1


Item 4: Standard rate for small ironwork parts such as connectors, connection parts,

plugs, screws etc. incl. professional installation as per approval


Sub-total for II. Post-and-beam structure of wood EUR ……………….


III. Timber-glass-composite elements

Item 1: Manufacture, supply and installation of the TGC element consisting of multi-

pane insulating glass UNIGLAS | .... or similar with connecting strip affixed in

the factory. The PP covers the supply and fitting of the glass supports in

accordance with structural analysis and component test (system section: SYS-

010). Supplier of the TGC elements: Partner companies of UNIGLAS GmbH &

Co. KG http://www.uniglas-facade.de

The insulating glass must be made from 2 x ESG-H (heat-soak single-pane

safety glass) or LSG (laminated safety glass) as per EN 1279 and EN 13022-

1. The middle pane of triple-glazed insulating glass made of TSG in

accordance with EN 12150 or ESG-H, thicknesses of the individual panes

according to structural planning, but at least 6 mm, thermo-technically

improved edge connection made of stainless steel e.g. Chromatech Plus

and/or Chromatech ultra black, SIKA IG-25 HM Plus or SIKA SG 500 silicone,

height of the adhesive/sealant above the spacer bar according to structural

planning, but at least 10 mm.

The connecting strip must be checked for dust, damage and timber humidity

and expertly glued to the insulating glass, which has been cleaned

beforehand, using Ottocoll S 660, observing defined adhesive geometry,

ensuring that there are no holes or bubbles, and with the correct interlocking

arrangement according to the workshop drawing supplied. The adhesive

surface on the connecting strip must be free of varnish residue. Strips that do

not meet requirements must be kept separate and may not be used. The

adhesive geometry must correspond to the structural analysis. The bond may

not be made at the construction site. The adhesive joint must be fully

hardened according to manufacturer's specifications before fitting of the TGC

element.

The dimensional accuracy, planarity and parallelism of the glulam post-and-

beam structure provided by the customer must be checked and the tolerances

determined before fitting.

The timber construction must be masked with a compressible Duplocoll

adhesive tape before inserting the elements to ensure impermeability to air

and driving rain and to serve as a vapour barrier. The connection joint of the

adhesive tape on the beam must be tight i.e. free from open joints. Any

unplanned moisture penetration into the elements during fitting must be

prevented. The support blocks must be fitted with the aid of a drilling template,

and the TGC element must be lifted in, aligned and screwed to the post-and-

beam structure. When screwing the TGC element into the supporting

structure, it must be ensured that glass substrate and the thick layer of varnish

on the connecting strip are not damaged.


Technical data of the element and the insulating glass:

Ucw = …………… W/m²K

RW,R = .…………… dB

Ug = …………… W/m²K

g = .…………….

v = ……………..

…… m2 each EUR ………….. EUR ………………..

Item 2: As item 1 , but with fall safety function of category ......

The glass structure must consist of at least 1 pane of laminated safety glass

(VSG). The glass types, thicknesses and structure are based on the structural

planning and the "abZ" approval.


Ucw = …………… W/m²K

RW,R = .…………… dB

Ug = …………… W/m²K

g = .…………….

v = ……………..

…… m2 each EUR ………….. EUR ………………..

Item 3: Allowance for the provision of a glazed corner variant B in accordance with

connection detail AND-040

…… m each EUR ………….. EUR ………………..


Item 4 Pre-positioning allowance for the execution of edge enamelling on the

insulating glass for covering the edge connection. Only enamel colours that

are compatible with the structure silicone and approved by building authorities

in accordance with ETAG 002 (with positive verification of the adhesion and

ductility behaviour of the structure silicone) may be used, e.g. Ferro Group B

(zinc-boron-silicates), collection 140, general technical approval abZ No. Z-70-

1-7. Das The adhesion and ductility behaviour must be verified by an expert

opinion from a notified institute.

…… m each EUR ………….. EUR ………………..

Item 5 Allowance for supply and fitting of an insert element as a timber/metal window

or glazed door, timber-aluminium compound system, wood type ……..,

Exterior frame flush-mounted, edges of fixed-frame and sash-frame profiles

sharp-edged, sash opens inwards, colour inside….,

exterior surface powder-coated, colour (coating) ........, standard fittings

according to tender specifications (please indicate product):

........................................

Fittings covered. Cover strips/cover profiles connecting joints' ', 4-sided,

EPDM (APTK) sealing profile, as middle seal in the sash frame. Attachment to

the post-and-beam structure using screwed connecting strip with interlocking

according to a workshop drawing.

Multi-pane insulating glass UNIGLAS | ………..…. or similar, profiled glass

holding bar, attached with wire pins, galvanized, DIN 18545 Part 3. Joint

permeability and driving rain permeability as per DIN 18055 stress group B,

nominal value of the thermal transfer coefficient (relative to standard size 1.23

m x 1.48 m, frame proportion 30 %

----------------------------------------


Design:

Window, one-piece, as turn-tilt sash,

Carcass dimensions (W x H) ………….…. x ………...….. mm.

Design in accordance with connection details AND-105 / AND-110


Ucw = …………… W/m²K

RW,R = .…………… dB

Ug = …………… W/m²K

g = .…………….

v = ……………..

…… pcs. each EUR ………….. EUR ………………..

Item 6 Execution of the weather seal with Ottoseal S 7. Joint width 20 mm. The joint

must be backfilled with a closed-cell PE round cord Ottocord PE - B2 to

prevent three-point adhesion and to ensure back-ventilation of the joint.

The unit price includes the planned opening of the rebate base ventilation and

drainage in the base, eaves and fascia area.

…… m each EUR ………….. EUR ………………..

Item 7 Allowance for production, supply, screwing in and professional sealing of

mechanical pane securing devices specified by building authorities (in

Germany from a glazing height of ≥ 8.00 above the ground; in Austria

generally) in accordance with system section SYS-030

…… pcs. each EUR ………….. EUR ………………..

Sub-total for III. Timber-glass-composite elements EUR ……………….


Title I EUR …………………

Title II EUR …………………

Title III EUR …………………

Total net EUR ………………….

VAT EUR …………………

Total gross EUR ………………….

……………………………….. …………………………………………..

Date, place Stamp / legally binding signature

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