Good equation... answer.. between two point is easy to calculate first note that the first point ngl and second where you want to drop the pipe and depending on levels varies and fixing manhole height .for example your manhole height 7 ft from top upto benching and you just substrate from ngl 202-7 and depending on distance. given per ft standard slope 0.002 ...but beg society project you should have contour design data you easily planing sewerage networking and designing by software
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Hello sir how to find Invert level from existing ground level
Good equation... answer.. between two point is easy to calculate first note that the first point ngl and second where you want to drop the pipe and depending on levels varies and fixing manhole height .for example your manhole height 7 ft from top upto benching and you just substrate from ngl 202-7 and depending on distance. given per ft standard slope 0.002 ...but beg society project you should have contour design data you easily planing sewerage networking and designing by software