Cutting hole into existing laydown slab
Cutting hole into existing laydown slab
(OP)
Hi,
We are putting a steel gate post into an existing 225mm thick cocnrete laydown area. The concrete is reinforced with 10mm long bars (200mm c/c) and 6mm transverse bars (400 c/c). The slab normally carries flask transporters with 15tonne axle load.
A 1.2x1.2m hole will be dugged into the existing slab and the fence post will be cast into a new concrete foundation in the hole.
My question is will the existing concrete laydown slab still be capable of resisting the 15tonne axle load around the cut out hole? What do I need to check?
Regards,
aeroelastic1
We are putting a steel gate post into an existing 225mm thick cocnrete laydown area. The concrete is reinforced with 10mm long bars (200mm c/c) and 6mm transverse bars (400 c/c). The slab normally carries flask transporters with 15tonne axle load.
A 1.2x1.2m hole will be dugged into the existing slab and the fence post will be cast into a new concrete foundation in the hole.
My question is will the existing concrete laydown slab still be capable of resisting the 15tonne axle load around the cut out hole? What do I need to check?
Regards,
aeroelastic1






RE: Cutting hole into existing laydown slab
Keep in mind that when you cut a square hole in your slab, cracks will emanate from the corners of the cut.
RE: Cutting hole into existing laydown slab
I don't know what your post is, but why such a big hole? If it is a round post you can drill a little oversize and grout the difference.
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Cutting hole into existing laydown slab
Dik
RE: Cutting hole into existing laydown slab
If you cut a 48" or so hole in the slab, auger into the grond for the post footing, undercut the slab by say 4" or so for a foot down the augered hole, then backfill with concrete after the post for the gate is installed, you should be fine.
I assume the gate is metal and cantilevered - the reason for the large footing?
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Cutting hole into existing laydown slab
The plan is to dig deeper than the slab and cast the post in with concrete.