Primary And Secondary Members

Builtup Member: Material :
H - Beams are fabricated from high grade steel plates conforming to IS : 2062, ASTM A572 50, ASTM A570 50, ASTM A572M Grade 345 Type 1 or Equivalent with a minimum yield strength of 34.5Kn/Sq.cm and are factory painted with a minimum of 25 microns DFT of Red Oxide Primer.

Technical Specification :
Web Height : 200mm - 1500mm
Web Thickness : 6mm - 32mm
Flange Width : 200 - 800mm
Plate Thickness : 6mm - 32mm
Length : Upto 12000mm

Secondary Members / Cold Framed Members:

It refers to purlins, girts, eave struts, wind bracing, flange bracing, base angles, clips and other miscellaneous structural parts.

Secondary frame types in PEB:

Secondary frames are used to support the roof and wall panels in a PEB. They are typically made of cold-formed steel sections and are attached to the primary frame. The most common types of secondary frames in PEB are:

• Purlins: Purlins are horizontal members that support the roof panels. They are typically spaced at intervals of 1.2 to 1.8 meters.
• Girts: Girts are vertical members that support the wall panels. They are typically spaced at intervals of 1.2 to 1.8 meters.
• Eave struts: Eave struts are horizontal members that support the roof panels at the eaves of the building. They are typically attached to the primary frame and the girts.

Secondary frames also include other members such as wind bracing, flange braces, base angles, and clips. These members help to stiffen the frame and resist wind loads and other lateral forces.

Primary and secondary frames work together to create a strong and durable building envelope that can withstand the elements and protect the occupants and contents of the building.