General requirements

0943 ASSEMBLY & ERECTION
Components shall be assembled within the tolerances allowed in Section Seven of BS 5950 Part 2.
Adequate care shall be taken to ensure that components are not bent, twisted or otherwise damaged.
Cambers shall be provided as indicated in drawings. Holes liable to be distorted during alignment shall be enlarged by reaming if approved by the Engineer.
Bolted connection shall be drawn together. Steel packing shall be provided to close gaps between adjacent surfaces.
Washers shall be provided where slot holes are over sized or directed by the Engineer.
The levels of concrete, masonry or other structure on which structural steel is to be erected shall be examined and set accurate and leveled before erection of steel structure. Anchors and embedded connection shall be accurately set and grouted before mounting of structure.
Concrete grout shall be in the Class of the bearing concrete or C-25 minimum, if not specified. Grouted connection shall be firmly set in position, and fully cured to ensure that, no movement occurs beyond the allowed tolerance.
Temporary scaffolding, bracing and shoring shall be provided with connection of sufficient strength to bear imposed loads. Temporary guidelines shall be provided to achieve proper alignment of the structure during erection.
Temporary connection provided for erection purpose shall be made in a manner not weakening the permanent structure.
Temporary connection and supports shall be removed only after permanent members are in place and all connections made.
Structural steel work shall be securely connected to ensure that it can withstand all loading liable to be encountered during erection.

Permanent connection shall be made only after the structure has been satisfactorily aligned, leveled and plumbed.

Erections shall be executed within the tolerance limits of Section 7 of BS 5950 Part 2.
All deficiencies in structural steel work discovered before or after erection by observation, testing or otherwise shall be corrected at the contractor’s expense and as directed by the Engineer.
Protective and decorative treatment to be applied to steel structure shall be executed in accordance with Section 12 of this Specification.
Any damage to protective treatment shall be made good to the standard of the original treatment. Protective treatments shall be made good in accordance with the recommendation of the manufacturer and as approved by the Engineer.