Flowable Fill around utilities
Flowable Fill around utilities
(OP)
Does anyone have any experience using flowable fill around utility crossings where minimum clearances can't be achieved? We have a situation where we can only get about 1" of clearance. I would like top specify using flow ash to insure that the there is a rigid base and settlement does not occur.
Thanks.
Thanks.





RE: Flowable Fill around utilities
But why worry about movement, when it appears that the gap is only an inch (25 mm)? It would seem to me that simply filling the gap with any flowable fill of even minimal strength and shrinkage properties would be sufficient. I'd be a lot more concerned if the gap was on the order of a foot (300 cm.) Then the shrinkage and strength could be a real issue...
Please see FAQ731-376 by VPL for tips on how to make the best use of Eng-Tips Fora.
RE: Flowable Fill around utilities
RE: Flowable Fill around utilities
Please see FAQ731-376 by VPL for tips on how to make the best use of Eng-Tips Fora.
RE: Flowable Fill around utilities
RE: Flowable Fill around utilities
RE: Flowable Fill around utilities
RE: Flowable Fill around utilities
RE: Flowable Fill around utilities
I am with J & S Contracting. We are a Canadian based company. For a number of years I did slabjacking. Have you considered using a hydraulic mud pump? You can use a blend of topsoil, sand and portland cement. This will create a surprisingly strong mix with little to no shrinkage.