shotcrete special inspection
shotcrete special inspection
(OP)
I have been requested to perform a shotcrete ispection on a thin shell concrete dome struture. The design engineer specified a 4000psi mix and shotcrete thicknesses. I was going to get a batchplant report on the mix and be on site and measure actual applied thicknesses. Is there anything else to be concerned about? It seems fairly simple to me, I think the local municpality was just nervous about it and didn't want to inspect it.
Thanks,
Thanks,






RE: shotcrete special inspection
RE: shotcrete special inspection
Who is testing the mix to ensure 4000 psi?
Don Phillips
http://worthingtonengineering.com
RE: shotcrete special inspection
RE: shotcrete special inspection
i would (at a minimum) do the usual concrete tests (slump, temp, etc) and make lots of notes about the placement and placement times. document admixtures or any troubles/delays experienced. i also suggest the contractor make several preconstruction panels...then core and test them. and i like hokie66's suggestion to have the design engineer there too (i'd try to at least get them there for the first few placements and periodically thereafter if possible). you might want to dig up a shotcrete inspection checklist and get the engineer to provide direction on what's needed.
RE: shotcrete special inspection
I've seen a lot of shadowing of reinforcement, excessive plastic settlement and other shotcrete defects during condition and structural inspections. As with most things, shotcrete isn't quite as simple as simple as it looks.
RE: shotcrete special inspection
Thanks again.
RE: shotcrete special inspection
RE: shotcrete special inspection
here's some links i found while researching for one of my projects.
http://www.shotcrete.org/
http://www.concrete.org/ (search for aci 506 and/or shotcrete)
RE: shotcrete special inspection