BS 7973-2:2001
Current
The latest, up-to-date edition.
Spacers and chairs for steel reinforcement and their specification Fixing and application of spacers and chairs and tying of reinforcement
Hardcopy , PDF
English
16-10-2001
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Committees responsible
Foreword
1 Scope
2 Normative references
3 Terms and conditions
4 Designations and symbols
5 Tying of steel reinforcement
6 General requirements for spacers and chairs
7 Spacers and chairs categories and applications
8 Spacing of spacers and chairs
Bibliography
Describes fixing and application requirements for spacers and chairs sufficient to achieve and maintain cover to reinforcement in, in situ reinforced concrete members subject to normal construction loads. Application requirements include tying and spacing.
| Committee |
B/525/2
|
| DevelopmentNote |
Supersedes 00/104697 DC (10/2001) Reviewed and confirmed by BSI, October 2012. (09/2012)
|
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of this British Standard specifies fixing and application requirements for spacers and chairs sufficient to achieve and maintain cover to reinforcement in in situ reinforced concrete members subject to normal construction loads. Application requirements include tying and spacing.
This British Standard applies to all types of reinforcement conforming to BS 4449 and BS 4482 and some types of welded fabric conforming to BS 4483, supplied to the preferred shapes and tolerances given in BS 8666.
Other important aspects such as clear and unambiguous detailing, the need to consider buildability, formwork tolerances and reinforcement are not specified. Standards of workmanship and supervision are also outside the scope of this British Standard as is a means of resisting wind loads or enabling the lifting of prefabricated reinforcement cages.
NOTE 1 Where appropriate, the basic principles can be applied to precast concrete or proprietary systems.
NOTE 2 Straight reinforcement for curvilinear members to be formed to a radius exceeding the maximum radius of bending given in BS 8666 may require extra tying and support to resist additional loads caused by the springing effect of the bars.
| BS PAS 68(2007) : 2007 | SPECIFICATION FOR VEHICLE SECURITY BARRIERS |
| BS 8110-1:1997 | Structural use of concrete Code of practice for design and construction |
| BS DD7971-9(2005) : 2005 | PROTECTIVE CLOTHING AND EQUIPMENT FOR USE IN VIOLENT SITUATIONS AND IN TRAINING - PART 9: TRAINING SUITS AND EQUIPMENT - REQUIREMENTS AND TEST METHODS |
| BS 7973-1:2001 | Spacers and chairs for steel reinforcement and their specification Product performance requirements |
| BS 4449:1997 | Specification for carbon steel bars for the reinforcement of concrete |
| BS 8666:2000 | Specification for scheduling, dimensioning, bending and cutting of steel reinforcement for concrete |
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