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You working aren't visible try upgrade the camera
How do u calculate the invert level of a drain given just diameter, gradient,level of drain and height above cover.I wasn't taught this an I got it on a test
chegg??
you have reversed p with r
You working aren't visible try upgrade the camera
How do u calculate the invert level of a drain given just diameter, gradient,level of drain and height above cover.I wasn't taught this an I got it on a test
chegg??
you have reversed p with r