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In 2005, the FAA mandated compliance with the Federal Runway Safety Act (RSA) which necessitated runway reconfigurations at some airports. For San Francisco International Airport (SFO), one of the nation's busiest airports, this posed a unique problem for the Airport's utility infrastructure. Constrained by Highway 101 to the west, and the San Francisco Bay to the east, SFO faced numerous challenges in order to comply with the new safety requirements. In particular, airport engineers had to realign existing, and install new, potable water, sanitary sewer, industrial wastewater, gravity, and pressurized storm pipelines, as well as construct a new drainage pump station and outfall pipelines.
Fusible PVC® pipe, first installed at SFO back in 2007, was selected to ensure water quality was not compromised in areas where soils or groundwater may have been impacted by airport operations. On the RSA projects, the SFO engineering team had to consider external soil and groundwater conditions, as well as the fluids being conveyed. Further, the corrosive groundwater environment and unsupportive 'bay mud' added to the design challenges. The proven performance of the restrained and gasketless Fusible PVC® pipe provided the optimal solution from a pipeline materials perspective. Where metallic fittings were required (e.g., at directional changes), SFO elected to use high performance epoxy coating and lining on all metallic fittings to ensure longevity in the challenging environment.
|Pipeline Details and Project Summary|
|Project:||San Francisco Airport Runway Safety Program|
|Location & Timing:||San Francisco, CA 2012-2013|
|Pipe Material:||1,580 LF of 4-inch DR14 Fusible C-900®, 2,489 LF of 8-inch DR14 Fusible C-900®, 220 LF of 18-inch DR25 Fusible C-905®, 125 LF of 24-inch DR21 Fusible C-905®, 880 LF of 30-inch DR25 Fusible C-905®|