Building anatomy

Girts and purlins are structural elements used in the construction of metal buildings. Here’s a description of these components, their style variations and how they’re made:

Girst

Girsts are horizontal elements attached to the posts or columns of a metal building. They are usually installed along walls to reinforce the structure and support exterior cladding panels. Girders can be fixed at different heights along Rigid Frames , depending on design needs and load requirements. They contribute to the building’s lateral rigidity and help distribute loads on the structure.

Variations on the style of girts :

1. Galvanized steel girts: These girts are manufactured from galvanized steel for enhanced corrosion protection and durability. They are commonly used in agricultural, industrial and commercial buildings.
2. Painted steel girts: These girts are coated with paint to enhance their aesthetic appearance and corrosion resistance. They are available in a variety of colors to match the style and design of the building.

Making Girst :

Girts are generally made from cold-rolled steel coils. The manufacturing process involves the following steps:

1. Coil cutting: Steel coils are cut into strips of the appropriate width to form girts.
2. Bending and forming: Steel strips are bent and formed according to design specifications to obtain the required shape and dimensions of the girts.
3. Perforation: If required, girts can be perforated or slotted to allow ventilation or the passage of fasteners.
4. Surface treatment: Girts can be treated with an anti-corrosion coating, such as hot-dip galvanizing or paint coating, to improve durability and corrosion resistance.
5. Packing and shipping: Once manufactured, girts are packed and shipped to the construction site for installation in the building.

Purlins :

Purlins are horizontal elements attached to the roof trusses of a metal building. They are used to support the load of the roof panels and to reinforce the roof structure. Purlins are installed perpendicular to the roof trusses and spaced at regular intervals along the roof slope. They help to evenly distribute the load on the roof structure and prevent excessive deformation of the roof panels.

Variations on the purlins’ style:

1. Galvanized steel traps: These traps are manufactured from galvanized steel for enhanced corrosion protection and durability. They are widely used in industrial, commercial and agricultural buildings.
2. Painted steel purlins: These purlins are painted to enhance their aesthetic appearance and corrosion resistance. They can be matched to the color of the roof panels for greater visual harmony.
3. Hot-rolled steel purlins: These purlins are manufactured from hot-rolled steel for increased strength and higher load-bearing capacity. They are used in buildings requiring a strong, resistant roof structure.

Manufacture of purlins :

Purlins are generally made from cold-rolled or hot-rolled steel coils.