標準號：BS 7973-2-2001
中文標準名稱：鋼筋的隔離件和墊板及其規范.隔離件和墊板的固定和應用以及鋼筋的捆扎
英文標準名稱：Spacers and chairs for steel reinforcement and their specification - Fixing and application of spacers and chairs and tying of reinforcement
標準類型：H40
發布日期：2001/10/16 12:00:00
實施日期：2001/10/16 12:00:00
中國標準分類號：H40
國際標準分類號：77.140.99
適用范圍：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.