BS 1247:1975
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for manhole step irons
Hardcopy , PDF
09-30-1990
English
03-01-1980
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.
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