Hydrogen sulfide corrosion in concrete storm drain pipes and abrasion erosion in systems carrying high-velocity sediment-laden stormwater both reduce pipe wall thickness progressively — decreasing structural capacity until the pipe fails completely. CCTV camera inspection quantifies wall loss and determines whether CIPP lining can still restore structural integrity.
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Storm drain structural corrosion follows specific mechanisms — each associated with particular pipe materials and operating conditions.
Storm drain corrosion rehabilitation through CIPP lining is viable as long as sufficient structural geometry remains to support liner installation and positioning.
Corrosion risk in storm drain systems is highest in specific pipe materials and operating environments — particularly aging CMP and concrete systems in aggressive environments.
A municipal public works department in the Triad region had a 30-inch CMP culvert under a collector road that had developed severe invert corrosion — wall thinning across approximately 65% of the pipe invert, confirmed by camera inspection and manual inspection from the headwalls.
LiningWorks specified a structural CIPP liner designed for zero host pipe contribution under collector road loading and installed the liner through the headwalls with the road open to traffic. Post-installation camera confirmed full liner bond throughout. The road was returned to unrestricted use immediately after liner cure.
“65% invert wall thinning in a 30-inch CMP under an active collector road. Complete replacement would have required full road closure and weeks of excavation. LiningWorks lined it through the headwalls with the road open. Structural documentation provided at close-out. Problem solved.”
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Storm drain corrosion rehabilitation requires accurate wall-loss assessment, engineering-based liner specification, and documentation — LiningWorks provides all three.
Camera measures wall loss — structural liner is specified for the actual corrosion conditions.
336-477-3218, Mon–Sat 7AM–6PM. Pipe material, age, diameter, loading conditions, and known corrosion history — describe the system and we'll schedule the right structural assessment.
We scope the full run, document corrosion severity and wall loss, confirm CIPP viability, and specify structural liner thickness based on actual measured conditions.
Heavy-wall structural liner installed through existing access. Post-installation CCTV verification. Engineering documentation package at project close-out for municipal and property records.
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