Referring concrete coring rates making by subcontractor were too high and not reasonable that I accepted these for just some areas that too difficult to drill by other ways and just few few quantity of job
But now portly of works done at Aqua and SBP and some of them can't be used as not on good position so we paid for nothing
We had many holes to prepare for pool grouting at SBP size 3" x 200 mm depth ( slab thick) other subcontractor just asked 400 THB/hole, 3 times cheaper than what we used
No more order on this without approval first and again previous rates I accepted just for too difficult positions and few quantities only don't use these rates for plenty of works like stupid otherwise you will pay not PJC