BS 6510:2005 pdf download

6 Fabrication

6.1 Work sizes and manufacturing tolerances

The work sizes for overall length and height shall be documented.

The size of an assembled frame shall be within±2 mm of the documented work size.The difference betweenthe 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 1 Significant surfaces are those visible after installation when windows and doors are closed and viewed from a distanceof 1 m, unless specified otherwise 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 batch quantity (see Note 3), shall have theirparent metal tear before failure of the welded joint.

NOTE 2The test methods given in BS 4872-1:1982,Clause 18 and Clause 19 (to be replaced by BS EN 287-1:2004,Clause 6), oradaptations thereof, would be appropriate.

NOTE 3 Welded corner pieces tested at the start of each new production order, and at least once weekly per welding machinethereafter, would be an acceptable sampling rule for small batch production.

Joints effected by mechanical means,such as cleating and screwing,shall be sealed.

When tee glazing bars of solid hot-Polled steel profile are incorporated, they shall be riveted and/or weldedto frames,and shall interlock with rigid joints displaying face 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.