Pre-engineered steel buildings are steel structures built over a structural concept of primary members, secondary members, roof and wall sheeting connected to each other and various other building components.
These buildings can be provided with different structural and non-structural additions such as skylights, wall lights, turbo vents, ridge ventilators, louvers, roof monitors, doors & windows, trusses, mezzanine floors, fascias, canopies, crane systems, insulation etc., based on the customer's requirements. All the steel buildings are custom designed to be lighter in weight and high in strength.
Pre-Engineered Buildings are the most flexible solutions for contractors and owners. With the advantages of low cost, high durability, perfect quality control and fast erection; PEBs are used for various applications:
Primary members are the main load carrying and support members. These include columns, rafters and other supporting members. The shape and size vary based on application.
Secondary Framing: Includes purlins, girts, eave struts, wind bracing, and base angles. Minimum yield strength of 345 MPa (50,000 psi).
Roof & Wall Sheets: Standard thickness 0.3mm to 0.6mm. Hot dipped and galvanized with zinc or zinc-aluminium coating for corrosion resistance.
Accessories: Anchor bolts, fasteners, gutters, downspouts, doors, windows, and skylight panels.
All steel components are processed through automated machines. NC files are used for precise punching, drilling, and plasma cutting. Fit-up involves connecting end plates, stiffeners, and purlin cleats by tack welding before final inspection.
Substrates are cleaned to Grade SA 2.5 standard. Painting is applied via Airless spray. Standard thickness is 150μm for indoor and 125μm for outdoor members, ensuring long-term protection against the environment.
| Form of Fillet Weld | K (Size Value) | Application Note |
|---|---|---|
| Without groove | K=(0.7~1)t and ≤15mm | Standard steel structure buildings |
| Without groove | K=(0.5~0.6)t | Strengthening ribs & secondary members |
| With groove (CJP/PJP) | K=t/4 and ≤10mm | Standard steel structure buildings |
| With groove (CJP/PJP) | K=t/2 and ≤10mm | Crane beams or important connections |