Test and general requirements for general purpose and precast concrete types of manhole step irons, including harpoon and round bar corner pattern types. Appendices on tail dimension checking gauge, proof load test and information required from the purchaser.

This Part of BS 1247 specifies the essential dimensions and general requirements for galvanized ferrous or stainless steel manhole steps. The types of manhole steps are: a) for general purposes, i.e. in brickwork and in situ concrete; b) for use in precast concrete manholes and inspection chambers complying with BS 5911.

1990年6月29日 · BS 1247:1955 is maintained by . This standard is available from the following sources: BSI Knowledge British Standards Online (BSOL) Other historical versions of this standard document also exist: BS 1247:1975 [current until 29/06/1990]

2024年12月20日 · BS 1247-1:1990(1999)的标准全文信息,人孔台阶 - 第1部分：镀锌铁或不锈钢人孔台阶规范, Manhole steps — Part 1 : Specification for galvanized ferrous or stainless steel manhole steps, 提供BS 1247

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This document is the British Standard BS 1247-1:1990 which specifies requirements for galvanized ferrous or stainless steel manhole steps. It was prepared by Technical Committee RDB/35 and published by the British Standards Institution (BSI) in 1990.

[BS 1247-1_1990] -- Manhole steps. Specification for galvanized ferrous or stainless steel manhole steps - Free download as PDF File (.pdf), Text File (.txt) or read online for free.

2025年1月13日 · 最新版本是 bs 1247-3:1991(1999) 。 BS 1247-3:1991(1999)的历代版本如下： 2002年 BS EN 13101:2002 地下室人入口处的阶梯.要求、标志、试验和舒适度的评定

2025年1月13日 · BS 1247-3:1991(1999)的标准全文信息,人孔台阶 第3部分：铝制人孔台阶规范, Manhole steps — Part 3 : Specification for aluminium manhole steps, 提供BS 1247-3:1991(1999)的发布时间、引用、替代关系、发布机构、适用范

This Part of BS 1247 specifies the essential dimensions and general requirements for galvanized ferrous or stainless steel manhole steps. The types of manhole steps are: (a) for general purposes, i.e. in brickwork and in situ concrete; (b) for use in precast concrete manholes and inspection chambers complying with BS 5911.