Perforated schedule 40 PVC piping collects soil gases beneath the concrete slab within a coarse gravel layer. A non-perforated schedule 40 PVC main pipe connects via a PVC tee or cross fitting. Section A-A indicates a specific angular configuration for the internal pipe drops and gravel placement beneath the finished floor.
A SECTION A-A ELEVATION 60° 60° FINISHED FLOOR 100 PERFORATED SCH 40 PVC PIPING 100 SCH 40 PVC MAIN PIPE (NON-PERFORATED) 200 GRAVEL LAYER A 100 X 100 X 100 SCH 40 PVC TEE OR CROSS
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