This roadbase inspection checklist supports highway S4 works and civil road construction. Record project details, subcontractors, and inspector. Verify subgrade and subbase thickness by CBR and confirm geotextile requirements. Check kerb race and gullies, specify material depths, and capture site and wagon temperatures. Select DBM material sizes and bitumen paving grades. Log rolling straight edge and 3 metre straight edge results, roller type, and overall compliance to ensure quality carriageway surfacing.
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