BS 1247:1975

This standard BS 1247:1975 Specification for manhole step irons is classified in these ICS categories:

• 93.030 External sewage systems
• 97.145 Ladders

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.