Using Acrow props as trench struts
Using Acrow props as trench struts
(OP)
I have a temporary works job where the design engineer has specified acrow props to be used as trench struts. I am used to these being used in a vertical position such as for supporting formwork or an opening but I am dubious about their capacity in a horizontal position.
Has anyone had any experience with this?
Has anyone had any experience with this?






RE: Using Acrow props as trench struts
RE: Using Acrow props as trench struts
Do you use the full rated capacity or reduce the a little for bending?
RE: Using Acrow props as trench struts
RE: Using Acrow props as trench struts
RE: Using Acrow props as trench struts
Used horizontally there would be an additional bending generated within the prop but I would expect this to be pretty small. The bending may induce secondary effects as the prop is not a single member as gravity would tend to to pull it to one side. Whether this is significant, not sure.
I would have though the axial loads generated by the retained material would be pretty small. Unless you had a very deep excavation and significant plant surcharge. In such cases then it is maybe more advisable to use a waling frame, or a properly designed trench shutter.
RE: Using Acrow props as trench struts
I cannot find anything to say definately no but I cannot find any guidance on it either. At least I know it has been done elsewhere.
RE: Using Acrow props as trench struts
http://www.mabeysupport.co.uk/superprop.asp
for design info in both horizontal and vertical applications.
Axial/bending interaction is important for long spans.
- PR
RE: Using Acrow props as trench struts