Steel Roof Structure Terminology

The width of the flanges is usually between 1 5 times and 3 times less than the depth of the web.

Steel roof structure terminology.

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. This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams. To ensure construction safety a construction monitoring scheme was. Usually steel sections in the shape of i.

Sometimes called hat channel because of its shape. Valley the internal angle formed by two inclined slopes of a roof. Eaves on a sloped roof the horizontal underside that projects out from the house wall. Architectural roofing is metal roofing systems that are non weightload bearing and must be installed over solid decking rather than battens or purlins.

Glossary of steel terminology. The roof steel structure in the terminal 2 building of yancheng nanyang airport has a large span and a considerably difficult construction. Structural steel the structural elements that make up the frame that are essential to supporting the design loads e g. 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.

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. Collar ties rafter ties tension beams structural ridge beams. 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. A metal v shaped gutter is fixed in this area to direct water to the gutter.

Truss roof the prefabricated self supporting triangulated structural framework commonly used for all types of roofs. 30 lb felt was the standard underlayment for quality metal roofing systems and is still used but has been replaced in many areas by the newer synthetic underlayments it is typically made of a polyester fleece and infused with tar. Some of these can support the roof and prevent ridge sagging and wall spreading. Beams columns braces plate trusses and fasteners.

The line formed at the intersection of two adjacent sloping planes of a roof. A roof that is formed by sloping planes from all four sides. The section has a web in the middle and two flanges.