Requirements for processing and construction of curbstone 1. The curbstone (www.hongjishicai.com) must be constructed by hanging a straight line, tightening it according to the elevation mark line on the top surface of the side plane, laying the side flat stone according to the line code, and the side flat stone must be upright, and it is forbidden to bend forward and backward, and the side top line is straight, smooth, and smooth without height errors