Driveway Cover Drain Grating Cover Pit Sewer Sump Drainage Grate US$17.49-50.00 / Set Drain Trench Pit Cover Drainage Grates Sidewalks Rain Water Grating US$17.49-50.00 / Set 304 stainless Steel Grating Panel Road Drainage Steel Safety Grating US$17.49-50.00 / ...
Drive stakes to mark out the path of the drain and measure the change in elevation between each pair of stakes. To do this, tie a string to the base of the stake nearest the beginning of the drain, stretch it to the next stake, put a line level on the string and center the bubble...