Steel Roof Structure Terminology

Architectural roofing is metal roofing systems that are non weightload bearing and must be installed over solid decking rather than battens or purlins.

Steel roof structure terminology.

Metal roofing always has this feature. Glossary of steel terminology. Terminology commonly used in the metal building industry. A floor or roof covering made out of gage metal attached by welding or mechanical means to joists beams purlins or other structural members and can be galvanized painted or unpainted.

Terminology applied to structural steel members the use of these members the methods by which they are connected and the basic sequence of events which occurs during erection. Also known as slope pitch is the measure of how steep a roof is. That portion of the roof structure that extends beyond the exterior walls of a building. As a result of these name changes there has arisen confusion are we talking about a structural steel building a modular building a prefabricated building a pre engineered.

Metal buildings a brief history technology terminology. Basic terms and descriptions. For example if a roof is a 4 12 pitch the roof rises 4 inches for every horizontal run of 12 inches. 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 section has a web in the middle and two flanges. A building product which supplements a basic solid panel building such as a door window light transmitting panel roof vent cupola soffit wainscot overhang etc. The terminology used to describe steel buildings over the years has changed as the technology for designing and producing these buildings has matured. Truss roof the prefabricated self supporting triangulated structural framework commonly used for all types of roofs.

The same roof has a 4 12 or 1 3 pitch. Usually steel sections in the shape of i. Valley the internal angle formed by two inclined slopes of a roof. The terms pitch and slope are simply two different ways of expressing the same measurement.

The width of the flanges is usually between 1 5 times and 3 times less than the depth of the web. Deck type the specific type of deck to be specified such as type b wide rib type f intermediate type n deep rib type a narrow rib composite. A structure designed and constructed to house farm implements hay grain poultry livestock.