Terrace gradient measuring mechanism and method for constructional engineering

The invention belongs to the field of gradient measurement, and provides a floor gradient measurement mechanism and method for constructional engineering, and the mechanism comprises a base and a vertical frame which is fixed on the upper surface of the base; surveying and mapping assemblies are rotationally mounted on the inner walls of the vertical frames; the surveying and mapping assembly comprises a surveying and mapping rod rotating on the inner wall of the vertical frame, a pointer installed on the end face of a rotating shaft of the surveying and mapping rod and arranged on the side face of the vertical frame, a dial arranged on the side edge of the vertical frame, a height adjusting groove formed in the inner wall of the surveying and mapping rod and a first infrared distance meter installed on the side wall of the surveying and mapping rod. The second infrared distance meter slides on the inner wall of the height adjusting groove; the scale marks are arranged on the surface of the surveying and mapp