Industrial Structural Terms Illustrated Roof Deck

Type a steel roof deck is rarely used for new construction projects.

Industrial structural terms illustrated roof deck.

The same roof has a 4 12 or 1 3 pitch. The roof truss structure and design is integral to roof structural integrity and shape. The roof deck is the backbone and an integral component of all roofing systems. Type a roof deck is a 1 deep structural steel roof deck that supports various types of roofing materials.

The engineered wood association the apa. This specific type of roof deck is best used in conjunction with thinner rigid insulation. This article and series of illustrated diagrams shows you all the parts of a basic roof truss king truss and queen truss. And it all starts with the roof deck.

The engineered wood association is a trade organization that develops product standards installation standards and does certification testing of engineered wood products such as plywood and osb. Roofing nails and staples driven into decks at an angle not perpendicular to the roof deck surface. A roof s slope is the number of inches it rises for every 12 inches of horizontal run a roof with a 4 in 12 slope rises 4 inches for every 12 inches of horizontal run. The terms pitch and slope are simply two different ways of expressing the same measurement.

Its main function is to provide structural support for the roof system and therefore is a building element that needs to be designed by a licensed design professional because proper support of the roofing above is critical to the roof system s success.