Roof Joist

Business / Construction / Roof Joist: The rafters of a flat roof. Lumber used to support the roof sheeting and roof loads. Generally, 2 X 10's and 2 X 12's are used.
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Roll Roofing

Business / Construction / Roll Roofing: Asphalt roofing products manufactured in roll form. 36-inch wide rolls with and 108 square feet of material. Weights are generally 45 to 90 pounds per roll. MORE

Rolled Roofing

Business / Real Estate / Rolled Roofing: An asphalt roofing material that is manufactured in rolls with granules on one side. Asphalt roofing is a relatively inexpensive and short-lived product, and should not be used as a roofing material o MORE

Roof Decking

Business / Real Estate / Roof Decking: The undersupport material which is typically wood for attaching shingles and other materials to the roof. MORE

Rim Joist

Business / Construction / Rim Joist: A joist that runs around the perimeter of the floor joists and home. MORE

Proof Theory

Technology / Computers / Proof Theory: This deals with the actual 'logic' of the programming. Using mathematical analysis techniques, the programming language is proof checked. MORE

Proof of Concept (POC)

Entertainment / Video Games / Proof of Concept (POC): An early iteration of a game, created with the intention of determining the feasibility of a gameplay concept. MORE