Рет қаралды 54,299
What needs to be considered in calculating the drainage volume is the shape of the drainage itself. We don't need to care what the drainage is made of. Is it only in the form of soil channels or from masonry or even from concrete because the method of calculating the volume of drainage for each type of material used is the same. The unit of payment for drainage works is in cubic meters (m3). Except for the U-Ditch type precast line payment currency which uses meters.