The pit in this case is dug up more than under the construction of one sump. The pit will have two volumes of 30 centimeters from each other, the masonry in this case remains the same thickness of half the brick. The distorting channel is located just below the drain pipe, or rather below two rows of brick. The channel is made from the plastic pipe of which the diameter of which will be 95 millimeters. The current structure will resemble a large letter «n»
