Regulation 9 Stability of structures

All practicable steps shall be taken, where necessary to prevent danger to any person, to ensure that any new or existing structure or any part of such structure which may become unstable or in a temporary state of weakness or instability due to the carrying out of construction work (including any excavation work) does not collapse accidentally.

No part of a structure shall be so loaded as to render it unsafe to any person.

Any buttress, temporary support or temporary structure used to support a permanent structure pursuant to paragraph (1) shall be erected or dismantled only under the supervision of a competent person.