... plastering orboarding of the soffits; also called a barge rafter.barge course 1. The coping of a wall, formedby a course of bricks set on edge. 2. In a tiledroof, the part of the tiling which ... and conditions of test: For amixture of workable consistency, the strength of concrete provided by the mixture is determinedby the ratio of the amount of water to theamount of cement.abrasion ... rate of change of thevelocity of a moving body. 2. The rate of change,esp. the quickening of the natural progress of aprocess, such as hardening, setting, or strengthdevelopment of concrete.acceleration...