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Steel Buildings Installation Method


Steel buildings offer a rapid and efficient construction solution widely used in both industrial and residential projects around the world. The installation process encompasses several stages, from anchor bolts to completion. Below, we outline the comprehensive steps involved in the installation of pre-engineered steel buildings, from foundation bolts to finishing.


Preparation Before Construction

Before the installation process begins, the construction site must be cleared, leveled, and prepared for the placement of steel structures and the movement of heavy equipment. Materials should be stored in a dry, accessible location to prevent weather-related corrosion. It is essential to verify the packing list for each component: columns, beams, braces, purlins, etc. to ensure the correct quantity and good quality materials are provided.


1. Foundation Bolts


- Site Inspection: Ensure the positions for foundation bolts are tidy and accessible.

- Measurement and Positioning: Determine the locations for foundation bolts based on anchor bolts plan drawing.


- Positioning Anchor Bolts: Use precise positioning equipment to place the bolts accurately.

- Securing Bolts: Pour concrete around the bolts and ensure they are securely held and aligned during the curing process.


2. Column Installation


- Checking columns: Ensure columns are straight, of the correct length, and free of deformation. Connection flanges should be flat and unwarped.



- Erecting columns: Use cranes with calculated load capacities to lift and position columns according to design specifications.

- Securing columns: Connect column bases to foundation bolts, adjusting for vertical alignment using measuring tools and theodolites. Install additional bracing systems (portal bracing, X bracing) or girts to stabilize the columns.


3. Beam Installation


- Checking beams: Ensure beams are straight, of the correct length, and free of warping. Connection flanges should be flat and unwarped.


- Lifting beams: Use cranes to lift beams to the required height.

- Securing beams: Connect beams to columns with high-strength bolts and verify the stability of the connections. Use temporary bracing to stabilize the frame and prevent movement or collapse due to external forces.


4. Frame Bracing Installation

Frame bracing is critical for stabilizing and securing the structure throughout the construction process, ensuring overall safety. Omitting or improperly installing bracing can lead to structural collapse, endangering lives and property.


- Checking: Ensure bracing is undamaged and bolt holes are correctly positioned and sized.


- Connecting bracing: Use high-strength bolts to connect bracing to designated positions on columns and beams.

- Inspection: Ensure all bracing is securely connected and aligned.


5. Roof and Wall Purlin Installation

Roof and wall purlins are installed simultaneously with the structural frame (columns and beams) to save time and provide additional stability during construction.


- Checking purlins & girts: Ensure they are of the correct quantity, undamaged, and the correct length.


- Connecting purlins & girts: Connect purlins to connection plates welded on beams and columns. In some designs, purlins can be directly connected to column and beam flanges without connection plates.

- Inspection: Make sure they are securely connected and aligned, ensuring proper installation of roof and wall panels later.


6. Purlin Bracing Installation

Purlin bracing, which can be sag rods, sag arrestors, or bridging, connects purlins to each other for added stability.


- Checking: Ensure bracing is undamaged, of the correct quantity, and the correct length.


- Connecting bracing: For sag rods and bridging, workers can connect them directly on the roof after installing purlins. For sag arrestors, prepare them on the ground before installation.

- Inspection: Ensure all purlin bracing is securely connected and aligned.


7. Roof Panel Installation


- Roof Panel Quality Check: Ensure panels are undamaged, free of holes, and cut to the correct size.


- Installing: Place roof panels on roof purlins and secure them with screws (for screw-down panels) or clamps (for Kliplok and Lokseam panels).

- Inspection: Ensure panels are securely attached and aligned. Clean the roof after installation to remove any metal debris or screws to prevent future corrosion.


8. Wall Panel Installation


- Checking: Ensure panels are undamaged and cut to the correct size.


- Installing: Attach wall panels to wall purlins and secure them with screws.

- Inspection: Ensure panels are securely attached and aligned.


9. Trim and Flashing Installation


- Checking: Ensure they are of the correct quantity and undamaged.


- Connecting: Attach to eave and gable angles.

- Inspection: Ensure trim and flashings are securely attached and aligned.


10. Finishing

- Final Inspection: Review the entire structure to ensure all components are correctly installed. Note and correct any minor errors.

- Defects: Address any minor defects that arose during construction.

- Handover: Handover the completed structure to the owner after final inspections and corrections of the defects.



The installation of steel buildings requires precision and strict adherence to technical standards to ensure the structure's durability and safety. Erection contractors must thoroughly review erection drawings and packing lists before commencing work. Adherence to labor safety protocols and approved construction methods and designs is crucial to a successful project.


Ton Dong A
Ton Hoa Sen
Bureau Veritas