Today's basic philosophy for the use and operation of the temporary works to support in situ concrete, precast units and steelwork - better known as 'falsework' - was established following a number of major collapses in the early 1970s.
The subsequent report, the Final Report of the Advisory Committee on Falsework (HMSO) - better known as the Bragg Report - was published in 1975 and set requirements for the erection and stability of these temporary structures.
The recommendations were substantially incorporated into a British Standard Code of Practice in 1982 (now BS 5975: 2019, Code of practice for temporary works procedures and the permissible stress design of falsework).
A copy of the report is available at https://www.cross-safety.org/sites/default/files/2021-03/final-report-of-the-advisory-committee-on-falsework-bragg-report.pdf