Common WF Placement Mistakes in Building Projects

In building construction, Wide Flange (WF) is a primary structural element that functions to withstand vertical and lateral loads. However, in the field, errors in WF placement are still common, seemingly trivial, but can significantly reduce the strength and stability of the building.

Here are some of the most common WF placement errors in building projects that require caution.

1. WF Position Not Conforming to Grid As and Structural Drawings
One of the most common errors is the WF not being placed precisely on the building's grid assemblies. A difference of just a few centimeters can cause:

• Uneven load distribution
• Misalignment with other beams or columns
• Difficulties when installing connecting elements

If left unchecked, this condition can trigger additional stresses not planned for in the structural design.

2. Out-of-Plumb WF
WF that:

• Tilted
• Not vertically aligned
• Shifted during erection

will reduce the column or beam's ability to withstand compressive and flexural loads. Furthermore, out-of-plumb WFs also have the potential to cause misalignment of connections between structural elements.

3. Incorrect WF Orientation (Inverted Flange and Web)
Incorrect WF orientation, such as webs not aligned with the main force direction, often occurs due to a lack of understanding in the field. The impacts are:

• The WF's flexural capacity does not perform optimally
• The structure does not match the designer's calculations
• The risk of deformation increases

However, the installation direction of the WF is crucial for structural performance.

4. Uneven or Inaccurate WF Supports
WF placed on supports that are:

• Uneven
• Not parallel
• Not at the correct elevation

will cause imperfect contact between the WF and the support. As a result, the load is not transferred properly and can cause cracks or deformation in the supporting elements.

5. Not Using Locking Aids During Erection
During the erection stage, WFs are often installed without temporary locking devices such as:

• Bracing
• Clamps
• Temporary supports

This makes the WF susceptible to shifting due to wind, vibration, or heavy equipment activity, resulting in an unfavorable final position.

6. Ignoring Installation Tolerances
Every WF installation has a permissible tolerance limit. If this tolerance is ignored, then:

• Small errors can accumulate
• Structural deviations become larger
• Overall structural quality decreases

How to Avoid WF Placement Errors
To ensure WF is installed correctly, the following steps must be implemented:

• Fully refer to the structural drawings and shop drawings
• Periodically measure and check levels
• Use adequate erection tools
• Conduct quality control before and after installation

Conclusion
WF placement errors not only affect the neatness of the work but also directly impact the strength, stability, and lifespan of the building. With precise installation and compliance with standards, the structure can perform optimally according to plan.

Use Quality WF for Reliable Building Structures
PT Intisumber Bajasakti provides quality WF that meets standards, ready to support building projects requiring precise and reliable structures.

📞 Phone: 021-66675999
🌐 Web: intisumberbajasakti.com
✉️ Email: info@intisumberbajasakti.com

Contact our team now for a consultation on selecting the right WF for your project needs.

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