1. Review the guardrail plans
Before guardrail installation, check the guardrail plans. Make sure the current standard road plans match the date listed in the project plans.
2. Guardrail Beam Check
Check the guardrail beam specification such as two wave guardrails. Make sure the guardrail match your country's standard.
3. Guardrail Accessories Check
Check whether the bolts and nuts match the guardrails beam. Make sure the posts and spacer blocks match the guardrail beam, also check whether they are galvanized.
4. Installation Location Related Checks
Make sure the installation line is correctly located for the type of guardrail, w-beam, thrie-beam, or cable. The offset distances must be correct for face of guardrail location from the installation line.
When installing:
5. Guardrail Installation Machine Check:
Make sure the guardrail pile driver works properly.
6. The Guardrail Location Check
Are posts and guardrail located correctly? The rail/cable height need to be according to height specified in the Standard Road Plans. (ie: 31 inches for w-beam and 32 inches for thrie-beam). Make sure the post spaced correctly.
7. Guardrail Post Plumb Check
The guardrail posts need to be reasonably plumb. So when using guardrail pile drivers, make sure the hammer accurate match the post shape. (Such as C channel post and round channel post).
8. Traffic Marker Related Checks
You also need to check whether the object markers, delineators, and associated hardware installed correctly?
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