propalock - telescopic steel props temporary support, acrow prop, acrow lock


Propalock is the new, innovative locking system fitted to adjustable telescopic steel props. Manufactured in accordance with British Standard (B8 4074: 1982 and current BS EN 1065: 1999) its purpose is to contribute to the security and management of safe working practices in temporary works/support situations during construction work.

Propalock is a management tool for the control of temporary support. improving health and safety practices. The universal popularity of adjustable steel props is due to the fact that they provide the simplest, quickest, most reliable and economic method of temporary support at any height between their closed and extended positions. Adjustable telescopic steel props comprise of a large diameter screw thread on the outside of the outer (lower) tube, a collar nut to achieve tine adjustment along the thread, and a loose pin through a series of holes in the inner (upper) tube to give a wider range of adjustment.

Propalock is initially installed to the outer lower tube of the prop. Following normal erection procedure by site staff, Propalock is fitted into its operating position by a responsible person – a temporary works co-ordinator (TWC). It is at this point the TWC assumes control of the temporary works implemented on site.


  •  Construction Design and Management Regulations 2007 (2015).
  •  British Standard 5975 2008 Code of Practice for Temporary Works.
  •  Heath and Safety Executive RR463 (avoiding structural collapses in refurbishment).
  •  Heath and Safety Executive SIM 02/2010/04, The Management of Temporary Works in the Construction Industry.
  • Heath and Safety Executive RR 204 2004 Safety in Refurbishment involving Demolition and Structural instability.
propalock - telescopic steel props temporary support, acrow prop, acrow lock
propalock - telepropalock - telescopic steel props temporary support, acrow prop, acrow lockscopic steel props temporary support


Propalock believes temporary support should be treated with the same level of importance as required under the provision and use of work equipment regulations Act of 1998 (section 19, Energy). It’s aim is to prevent unauthorised use of steel props, which can lead to accidents in the work place (i.e. Lockout/Tagout procedure).