6.5 Steelwork

MATERIALS STANDARDS

6.5 - M1Materials standards
6.5 - M2Steelwork
6.5 - M3Padstones
6.5 - M4Connections

6.5 - M1

All materials shall:
(a)meet the Technical Requirements
(b)take account of the design

 

Materials that comply with the design and the guidance below will be acceptable for steelwork supporting either masonry partitions or floors.

Materials for steelwork supporting either masonry partitions or floors shall comply with all relevant standards, including those listed below. Where no standard exists, Technical Requirement R3 applies (see Chapter 1.1 'Introduction to the Standards and Technical Requirements').

References to British Standards and Codes of Practice include those made under the Construction Products Directive (89/106/EEC) and, in particular, appropriate European Technical Specifications approved by a European Committee for Standardisation (CEN).

STEELWORK

6.5 - M2
Steelwork shall be of sufficient strength and durability
 

Steelwork will be acceptable if it complies with Clause M1 above and is based on:

BS 4 Part 1Structural steel sections : Specification for hot-rolled sections, or
BS 4848Specification for hot-rolled structural steel sections.

To ensure durability, steelwork should be given a protective coating system. For steelwork which is to be bolted (using black bolts) or not connected, an acceptable coating system is one coat of high build zinc phosphate primer and one coat of bituminous paint. Where welding is to be carried out, use the protective coating system specified by the designer.

PADSTONES

6.5 - M3
Padstones shall distribute point loads safely to the supporting structure
 

Details of padstones are given in Table 3, Appendix 6.5-A and Table 5, Appendix 6.5-B. For the design of padstones see Design section, clause D2.

CONNECTIONS

6.5 - M4
Connections shall be chosen to be capable of supporting and transmitting the intended loads
 

Connections should comply with the design. Bolts will be acceptable if they comply with the design and are based on the relevant British Standards, including:

BS 4190Specification for ISO metric black hexagon bolts, screws and nuts
BS 4395Specification for high strength friction grip bolts and associated nuts and washers for structural engineering
BS 4604Specification for the use of high strength friction grip bolts in structural steelwork.


Welded connections should comply with:

BS 5135Specification for arc welding of carbon and carbon-manganese steels.