Non correct Excavation
Non correct Excavation
(OP)
Hi everybody
During the excavation for a mat foundation, we encountered a wrong excavation elevation by the surveyer for approximately 50% of the area. So, we recommended the contractor to continue the excavation with correct elevation until we solve the extra excavated area. The elevation difference is about 2.15m. Please any help.
During the excavation for a mat foundation, we encountered a wrong excavation elevation by the surveyer for approximately 50% of the area. So, we recommended the contractor to continue the excavation with correct elevation until we solve the extra excavated area. The elevation difference is about 2.15m. Please any help.






RE: Non correct Excavation
I forgot to include these:
1- should we fill the extra excavated area (about 2.5m) and then lay the mat.
2- should we design columns (of height 2.5m) under the mat in the area of the wrong elevation
or other options
RE: Non correct Excavation
RE: Non correct Excavation
RE: Non correct Excavation
Is the filling the best solution?
RE: Non correct Excavation
RE: Non correct Excavation
RE: Non correct Excavation
I wonder if there are other solutions.
RE: Non correct Excavation
I do agree with others, your best course of action is probably to find a local experienced engineer to help with the most economical solution. Since this is the surveyors/contractors mistake you could also put the burden of solving the problem on them, with the solution to be approved by you or another engineer.
RE: Non correct Excavation
Mike McCann
MMC Engineering
RE: Non correct Excavation
RE: Non correct Excavation
columns are just a silly idea, you need to backfill
that fill could be in order of cost and suitability to handle heavy loads
a) structural concrete
b) lean concrete
c) very well compacted aggregate base course
d) and last but worst would be compacted native material
RE: Non correct Excavation