High-strength bolts are critical for the structural integrity of modular and container homes. Applying the correct torque ensures stability, prevents damage, and prolongs the building’s lifespan.
This guide explains step-by-step how to torque bolts properly and maintain a torque log for quality control.
1. Why Proper Torque Matters
Ensures structural connections remain tight under load
Prevents over-tightening that can damage threads or panels
Avoids under-tightening that can lead to misalignment or collapse
Critical for multi-module stacking in container homes
2. Required Tools
Torque wrench (digital or manual)
Impact driver for initial fasteners
Torque log or recording sheet
PPE (gloves, goggles, helmet)
3. Step-by-Step Torque Application
Identify Bolt Specification
Check bolt size, grade, and torque value from the engineering drawing.Pre-Tighten Bolts
Insert bolts and hand-tighten to hold parts in position.Apply Torque Gradually
Use a torque wrench and tighten bolts in a cross or staggered pattern for even pressure.Record Torque Values
Document each bolt’s torque reading in a log for future inspection.Final Check
Re-inspect connections for alignment, and confirm no bolts are loose or over-tightened.
4. Tips and Best Practices
Always follow manufacturer torque specifications
Calibrate torque wrenches regularly
Apply torque evenly to all structural bolts
Use certified fasteners for modular or container homes
Maintain a torque log as part of the quality control process
Conclusion
Correct torque application is a key factor in ensuring modular and container homes are stable and safe.
Following standardized procedures and keeping accurate records reduces structural risk, protects workers, and improves building longevity.
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📩 Email: besthouse@besteelstructure.com
