British Standards Document
BS 1129
Specification for portable timber ladders, steps, trestles and lightweight stagings

https://doi.org/10.3403/01635045U

BS 1129 is maintained by B/512. The current release of this standard is:

BS 1129:1990 Specification for portable timber ladders, steps, trestles and lightweight stagings

https://doi.org/10.3403/01635045 (published 28/09/1990)

This standard is available from the following sources:

Other historical versions of this standard document also exist:

BS 1129:1960 [current until 15/12/1966]
BS 1129:1954 [current until 22/02/1960]
BS 1129:1943 [current until 10/05/1954]