S Text Messaging Abbreviation

Square

In deck terminology, it is the term for 100 square feet of deck or roofing surface.Formula: number of squares = sum of(length of deck sheet in feet * width of deck sheet in feet * number of pieces)divided by 100. A unit of measure-100 square feet-usually applied to roofing and siding material. Also, a situation that exists when two elements are at right angles to each other. Also a tool for checking this. OR Rectangular, or at a right angle; the tool used for checking rectangularity.