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  2. Purlin - Wikipedia

    en.wikipedia.org/wiki/Purlin

    A purlin (or historically purline, purloyne, purling, perling) is a longitudinal, horizontal, structural member in a roof. In traditional timber framing there are three basic types of purlin: purlin plate, principal purlin, and common purlin. Purlins also appear in steel frame construction. Steel purlins may be painted or greased for protection ...

  3. Girt - Wikipedia

    en.wikipedia.org/wiki/Girt

    The girt is commonly used as a stabilizing element to the primary structure (e.g. column, post). Wall cladding fastened to the girt, or a discrete bracing system which includes the girt, can provide shear resistance, in the plane of the wall, along the length of the primary member.

  4. Cold-formed steel - Wikipedia

    en.wikipedia.org/wiki/Cold-formed_steel

    Examples of cold-formed steel that would not be considered framing includes metal roofing, roof and floor deck, composite deck, metal siding, and purlins and girts on metal buildings. Framing members are typically spaced at 16 or 24 inches on center, with spacing variations lower and higher depending upon the loads and coverings.

  5. Batten - Wikipedia

    en.wikipedia.org/wiki/Batten

    The spacing of the battens on the trusses or rafters depend on the type of roofing material and are applied horizontally like purlins. Battens are also used in metal roofing to secure the sheets called a batten-seam roof and are covered with a batten roll joint .

  6. Nissen hut - Wikipedia

    en.wikipedia.org/wiki/Nissen_hut

    The purlins are attached to the ribs using a "hook" bolt, which hooks through a pre-drilled hole in the rib and is secured into the purlin. The hook bolt is a unique feature of the Nissen design. Interior lining could be horizontal corrugated iron or material like hardboard attached to the ribs.

  7. Domestic roof construction - Wikipedia

    en.wikipedia.org/wiki/Domestic_roof_construction

    The blue pieces are roll formed metal roof battens or purlins. This roof is built with purpose-made steel hook bracket which is bolted to the truss with M16 bolt. The bracket is bolted to an M16 bolt cast in situ, embedded 300 mm (12 in) into the reinforced concrete block wall.

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