BS 6510:2005 pdf download

BS 6510:2005 pdf download.Steel-framed windows and glazed doors.
6 Fabrication
6.1 Work sixes and manufacturing tolerances
The work sizes for overall length and height shall he documented.
The size of an assembled frame shall be within +2mm of the documented work size. The difference between the diagonals of rectangular frames shall be not more than 4 mm.
6.2 Frame joints
Welded frame joints shall have significant surfaces dressed square and flat.
NOTE I Signi6cant surfaces are those -isiblc after inlolL.tion when soidows and doors arc closed and viewed from a distance oil m. unless spt.cdcd otherwior by the purchaser.
When tested for bending resistance and torsional strength (see Note 2). sample welded corner pieces.
selected at intervals appropriate to production volume and bat*h quantity (see Note 3), shall have their parent metal Lear befort’ failure of the welded joint.
NOTE 2 The test methods given in ItS 45721:1952. Clause 15 and Clause Ii Ito be replaced by ltd EN 257 12004. Clause I. or adaptations thereof, would ha’ approgiriat.’.
NOTE 3 Welded corner pieces tested at the start of each new production ceder, and at least once weckly per welding mceliine thereafter, would he an acceptable sampling role for smell batch produc*io.
Joints effected by mechanical means, such as cleating and screwing, shall be sealed.
When tee glazing bars of solid hot-rolled steel profile are incorporated, they shall be riveted and/or welded to frames, and shall interlock with rigid joints displaying fact’ gaps of no more than 1 mm.
6.3 Weatherseals
Weatherseals shall be clipped, clamped, or secured by adhesives.
6.4 Hardware
Double-point or multi-point fasteners shall be fitted on opening windows over 1 200 mm long or 1 500 mm high.
7 Protective finishes
7.1 Rust-protection
Frames and ancillary profiles shall be rust-protected using one of the following methods, or otherwise treated to pruvidi’ rust protection of demonstrably equivalent or superior performance:
a) hot dip galvanizing after fabrication in accordance with 145 EN ISO 1461; or
b) hot dip galvanizing before cold-forming in accordance with 118 EN 10142:2000, coating
designation 200 or 275; or
c) hot melt zinc spraying in accordance with 138 EN 2206.3; or
d) steved epoxy zinc priming in accordance with 138 EN ISO 12944 suitable for moderate environmcnt. and always over-coated with a colour finish.
NOTE prEN ISO 2063, currently in preparation, might lead to early revision or replacement of 118 EN 22063
7.2 Colour-coating
Frames and ancillary profiles shall be colour-coated, when rt’quired. either:
a) in accordance with 135 6497 with a paint thickness over zinc on significant surfaces of not less than 60 pm: or
b) otherwise treated to provide’ a colour coating of demonstrably equivalent or superior performance.
NOTE Significant surfaces are thase visible utter instaUation when windows and doors are closed and viewed from a distance of I m. unless apecified otherwise by the purchaser.
8 Design for installation
NOTE A guide to installation oF .teel window, 1. published by the Stsel Window Aociat,on a, Fact Sheet 3 II
8.1 Perimeter joint design gap
Windows and doors shall be provided with a perimeter design gap as shown in Figure 1 that allows for thermal movement, fabrication size variance and aperture construction tolerance.
NOTE I Gaps may vary to rationuitse frame sizas measured to fit existing similar but not )dent)CHI openings Perimeter design gaps shall be not less than 2 mm and not greater than 8 mm once the frame is centralize(l in its opening, unless otherwise agreed (see Notes .‘3 and 4).
NOTE 2 To achieve this, the Following rule’, should be observed.
a) For design opening brights and width, up to I in, frames ahouki be stied 5 mm Ira. than the design opening; actual opening h.igho and width, should vaj’ by no more than ±4 mm From the design opening
b) For design opening brights and widths over I in, frames should be sized 10 mm less than the design opening: actual openLng heights and width, should vary by no more than ±6 mm Front the design opening
NOTE 3 When replacing window, in existing buildings, the “design” opening ma the median o(tlw range of sixes nwasured from actual heights or wdth, that are no4lon1ly similar but not identical. Actual pertliwler gape between frame and Iresgular openings outside the limit, specified in 8.1 can he acceptable, and effectively sealed by specialist contractors, on agreement between installer and client.