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BS 7973-3:202X Spacers and chairs for steel reinforcement and their specification - Part 3 Fixing and application of spacers and chairs for use in post-tensioned building structures

Source:
BSI
Committee:
B/525/2 - Structural use of concrete
Categories:
Information management | Standardization. General rules
Comment period start date:
Comment period end date:

Comment by:

Scope

This part of this British Standard specifies fixing and application requirements for spacers and chairs used in applications involving post-tensioned construction. It will provide sufficient information to allow the product to achieve and maintain cover to reinforcement in in situ post-tensioned concrete floors subject to normal construction loads. Application requirements include tying and spacing.

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

Purpose

No standard exists to cover post-tension floors in building structures. Guidance is required to safeguard against the improper use of spacers and chairs.

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Please email further comments to: debbie.stead@bsigroup.com

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