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Hi IJR: what is the loading detail? Is there any point loads on the slab next to the holes? what is the size of the hole?I am sure that you checked the slab for shear. The slab may be ok for shear consideration. What we have to worry about more is , cutting the main reinforcement in the...

Hi Troppo: Thanks for the respond. C-PVC stands for Chlorinated PVC pipe. JR

Dear Gentlemen: I am planning to use U-PVC pipe in lieu of DI pipe for a sewage traetment plant in hot climate area. I am aware that there are pressure rated U-PVC pipes and C-PVC pipes can be used.Also, U-PVC cannot be exposed to sun where as C-PVC can be. In addition to the above...

Hi Halland Could you please elaborate your nature of testing for new bridge or existing bridge? regards JeyR

Hi Mithun: 1. As you know that even small pinholes will accelerate the corrosion, we have to take extra precaution in touching up those pinhole areas with liquid epoxy. 2. To my knowledge there is no chemical to add in the concrete mix to resist chloride attack on steel. All...

Hi IJR In addition to Ginger's comments, I would like to give some suggestion. Provide a perforated drain pipe behind the wall to day light the ground water/rain or use sump pump. This will minimize the pressure on the basement wall and minimize the dampness on the inner face of the wall...

Hallo Gentlemen: We have a water pipe line project which requires micro tunneling at a depth of about 20 meter. We plan to push the pipe for a length of about 60 meter. The subsurface soil consists of dense sand/ silty sand. The ground water ia at about 2m below the ground level. My concerens...

Hi David: If the subsurface soil consists of sand with SPT blow counts more than 10, there should not be a problem in supporting the RC pipes. I don't know why do we need to determine soil bearing capacity?