1) Pin together one of the outer fabric pieces and one of the waterproof pieces, wrong sides together. If you're not sure about the waterproof fabric, the right side is shiny and slippery and the wrong side is very slightly tacky. Do the same with the remaining two pieces.
âºâº Definition: Square foot. A square foot is by definition the area enclosed by a square with sides each 1 foot long. One square foot is equal to 0.09290304 square metres for the international, English foot. A square metre (US spelling: square meter) is by definition the area enclosed by a square with sides each 1 metre long.
Gross square footage is a measurement used in the building industry to measure the gross area of a structure in square feet. Gross square feet (GSF) is one of five primary measures of structures computed in square feet and rounded to the nearest whole number.he 3 nonassignable space use categories include building service, circulation and mechanical areas. 4. Structural space = GSF â Net Usable Area. Structural space is a measure of all floor space that cannot be occupied or used due to a buildingâs structural features, such as the exterior walls or an unusable basement.