Steel Roof Structure Terminology

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.

Steel roof structure terminology.

Truss roof the prefabricated self supporting triangulated structural framework commonly used for all types of roofs. The line formed at the intersection of two adjacent sloping planes of a roof. Steel sections angels channels w shapes etc which are formed by rolling mills while the steel is in a semi molten state. Structural steel having a yield stress in excess of 36 000 pounds per square inch.

It does not include for example cables. The roof steel structure in the terminal 2 building of yancheng nanyang airport has a large span and a considerably difficult construction. A metal v shaped gutter is fixed in this area to direct water to the gutter. Glossary of steel terminology.

Batten or purlins can be 1 x2 x4 wood strips nailed to the roof or rafters upon which the roofing is attached. The vertical framing members located at the sides of an opening. Structural steel the structural elements that make up the frame that are essential to supporting the design loads e g. Usually steel sections in the shape of i.

Structural shapes standard steel configurations produced by steel mills such as wide flanges channels angles pipe tubes etc. Sometimes called hat channel because of its shape. The section has a web in the middle and two flanges. A proprietary reidsteel name for a patented form of tied arch with pitched or parabolic roof slopes which can be used to span large spans cost effectively.

A power tool used to tighten nuts or bolts. According to the project characteristics the construction scheme of the roof steel structure follows the principle of subareas and substeps with the truss lifting in segmentation. Architectural roofing is metal roofing systems that are non weightload bearing and must be installed over solid decking rather than battens or purlins. An l shaped metal strip positioned along a roof s edges to allow water to run off the roof without running down the eaves or siding.

In some instances they are also steel lengths measuring about an inch or so wide that have an elevated middle where one screws the metal roofing into. Beams columns braces plate trusses and fasteners. Eaves on a sloped roof the horizontal underside that projects out from the house wall. The connecting area of a column and roof beam of a structural frame such as a rigid frame.

The width of the flanges is usually between 1 5 times and 3 times less than the depth of the web. A roof that is formed by sloping planes from all four sides.