PVC Specifications
Part 1 - General
The following specifications are for the supply and installation of flexible plasticized PVC membrane waterproofing systems for use in underground construction to prevent the infiltration of water into the structure.
The waterproofing membrane shall be a bi-color flexible polyvinyl chloride (PVC) sheet membrane. The membrane is to be installed over a geotextile layer which provides drainage and protects the membrane from substrate damage.
All seams are to be welded and tested to insure a watertight homogeneous seal of the membrane system. A final structural lining will then be placed against the membrane waterproofing system.
Different tunnel construction methods require different methods of installation and variances in the product specifications. The following specifications are only guidelines, each project must be closely evaluated prior to the development of the final project specifications.