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Shore Hire kicks off in Newcastle

Published on Oct 23, 2014

Acrow props are height-adjustable, temporary steel supports that are useful in a huge range of propping scenarios. They’re used principally for supporting vertical, stable loads such as form work, lintels and joists. Below we outline the key safety considerations and the basic steps for installing acrow props.

 

FIRST THINGS FIRST… GET AN ENGINEER’S ADVICE

When planning to use any construction prop it’s important to understand the loads you will be supporting. These should always be calculated by an engineer because the calculations can be complex and the risks of making a mistake significant. We always recommend consultation with a qualified Shore Hire engineer, no matter the size of the job.

At Shore Hire we tend to calculate and install props ourselves for our customers because we know the products intimately and we’ve used them on so many construction sites around the country. Even if your job is unusual, it’s likely we’ve covered the same propping task before.

Not only will you get the right product and system design for the job, you’ll get a certified, signed off solution, helping you to reduce the risk of an accident.

 

SAFETY CONSIDERATIONS

On all of our products, you’ll find the following warning:

HAZARD: Risk of Structural Collapse and Crushing

Incorrectly installed or rated propping systems may cause structural collapse.

Consultation with a qualified engineer is advised.

This is the most important instruction of all: that you must use a prop that is correctly rated for the job and ensure it is properly installed.

Further important safety considerations we always follow when installing acrow props include:

  • Using appropriate personal protective equipment for the job.
  • Ensuring all bystanders are kept clear of work area and using barricades if necessary.
  • Avoiding straining and using correct manual handling techniques.
  • Staying clear of overhead wires.
  • Not exceeding the working load limits of each prop: and remember that working load limits are for compression loads only – do not subject them to tension (pulling) loads or forces. In addition, when props are setup in non-vertical positions, the working load limits are reduced.
  • Ensuring props are installed on a level surface capable of supporting the load; where the surface is not level, steel or hardwood ‘sole plates’ should be used to spread the load.
  • When used in vertical applications, ensuring prop sections are installed as close to vertically upright as possible.
  • Being aware of lateral (sideways) movement. Where multiple propping structures are to be installed, ‘cross-brace’ the assembly to avoid lateral movement.
  • Use the screw jacks to raise or lower the prop under load; however, do not use the jacks to jack up a load or structure.

Full safety instructions are contained in the relevant user instructions, which are available from all of our branches.

 

INSTALLING AN ACROW PROP… THE KEY STEPS

When we install acrow props we use the following steps:

  1. Lift the inner tube to the approximate height required. The outer tube is kept steady by placing a foot on the base plate.
  2. Line up the hole in the inner tube and the slots in the outer tube and insert the prop pin through both tubes. Only use the specially designed high-tensile prop pin provided. Do not use a piece of ‘reo’, metal bar or a bolt, etc.
  3. Turn the handle of the adjusting nut until the prop extends firmly under the load. Do not hammer the adjusting nut or place a length of pipe on the handle as excessive force can damage the threads of the prop.
  4. When not in use, close props down because most damage occurs by bending of inners while extended.

 

CONTACT US FOR HELP WITH ACROW PROPS ON YOUR NEXT PROJECT

It’s usually easier, safer and faster to get the experts to plan and install propping equipment for you. To speak with a member of our team about our services, contact us

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