Safety precautions and procedures for the construction and descent of machine-bored shafts for piling and other purposes Ingestion-build-228203 Also gives guidance on the

Also gives guidance on the identification of core

and comparable test results

notes and test report

This document discusses the issues related to

Safety precautions and procedures for the construction and descent of machine-bored shafts for piling and other purposes Ingestion-build-228203 Also gives guidance on the1 Scope This British Standard provides guidance on the safety precautions and procedures involved where it is required to lower personnel into a shaft that is machine bored and not less than 750 mm in diameter. It does not cover the descent of hand dug shafts lined progressively as excavation proceeds, for which reference ought to be made to BS 6164