Trap the vertical main of a system of soil, waste or vent pipings extending through one or more stories and extended thru the roof. Stack any part of the piping system other than a main, riser or stack. Branch conveys only wastewater or liquid waste free of fecal matter. Waste Pipe
P L U M B I N G Sanitary Drainage System House/Building Sewer House/Building Drain extends from the house drain at a point 0.60 meters from the outside face of the foundation wall of a building to the junction with the street sewer or to any point of discharge, and conveying the drainage of one building site. part of the lowest horizontal piping of a plumbing system which receives the discharges from the soil, waste and other drainage pipes inside of a building and conveys it to the house sewer outside of the building.
P L U M B I N G Sanitary Drainage System Horizontal to Horizontal change in direction use 45 ° wye branches, combination wye – 1/8 bend branches, or other approved fittings of equivalent sweep Vertical to Horizontal change in direction 45 ° wye branches or other approved fittings of equivalent sweep CHANGES IN DIRECTION OF SANITARY DRAINAGE LINES
P L U M B I N G Sanitary Drainage System Horizontal to vertical change in direction use 45 ° or 60 ° wye branches, combination wye -1/8 bend branches, sanitary tee or sanitary tapped tee branches, or other approved fittings of equivalent sweeps. No fitting having more than one inlet at the same level shall be used (i.e., sanitary cross) Double sanitary tees may be used when the barrel of the fitting is at least two pipe (2) sizes larger than the largest inlet, (pipe sizes recognized for this purpose are 51, 64, 76, 89, 102, 114, 127, & 152 mm dia.)
P L U M B I N G Sanitary Drainage System Minimum slope or pitch of horizontal drainage pipe – 2% or 20mm/m (¼” per foot). Exception: Where it is impracticable due to depth of street sewer, adverse structural features and irregular building plans, pipes 102 mm dia or larger may have a slope of not less than 1% or 10mm/m (1/8” per foot), approved by the Administrative Authority MINIMUM SLOPE OF SANITARY DRAINAGE LINES
P L U M B I N G Sanitary Drainage System Types of Permissible Traps: The Common P-Trap The Deep Seal P-Trap Used for lavatories, kitchen sinks, laundry tubs, & urinals Materials commonly used for the P-trap: nickel, chrome plated brass, Galvanized malleable copper, & PVC. Water seal is about twice the size of The common P-trap Used for extreme conditions because resealing quality is greater
P L U M B I N G Sanitary Drainage System The Running Trap Used within the line of the house drain The Stand Trap Used for fixtures such as slop sinks that are usually built low in the ground, leaving very little space for a foundation & a trap Serves as a water seal & structural support for the fixture
P L U M B I N G Sanitary Drainage System The Drum Trap Has a large diameter (around 0.16 m) Used for fixtures that discharge large amount of water (bathtubs, shower or floor drains)
P L U M B I N G Sanitary Drainage System Traps REQUIRED Each plumbing fixture, except those with integral traps, shall be separately trapped with an approved-type waterseal trap.
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- Fall '17