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Technology in Architecture Lecture 15 Waste & Vent Systems Waste & Vent Sizing Procedure Bathroom Design Lecture 15 Waste & Vent Systems Waste & Vent Sizing Procedure Bathroom Design
Waste & Vent Systems
Fundamentals Siphon action can drain water Trap blocks sewer gas Vent breaks siphon S: p. 1006, F.22.8
Air Gaps Eliminate the potential for cross contamination S: p. 1009, F.22.11
Vents and Stacks Individual vents Circuit vents Soil stack Vent stack Stack vent “Wet stack” Vent through roof (VTR) S: p. 1008, F Note: Drain fittings are 45º
Drains & Sewers House drain House sewer Storm drain Clean outs House traps Fresh air inlet S: p. 1007, F.22.9 Note: Drain fittings are 45º
Waste & Vent Sizing Procedure
1. Identify waste & soil locations Clusters are more efficient S: p. 1014, F.22.17
2. Layout system vertically & horizontally 2. Layout system vertically & horizontally Grouped fixtures can be stacked in a vertical riser S: p. 1027, F.22.31
3. Size Traps Trap size is used when connecting to main S: p. 1017, T.22.2
4. Calculate Drainage Fixture Units (DFU) Pipe sizes based on DFU S: p. 1017, T
5. Determine loads Fixture location may control size S: p. 1022, F.22.24
6. Determine slope and size of horizontal drains 6. Determine slope and size of horizontal drains Slope may be constrained by depth of floor cavity S: p. 1020, T.22.5
7. Verify maximum vent length Measured from plans S: p. 1022, F.22.24
8. Size vents according to DFU and length Calculate for each vent load and developed length S: p. 1019, T.22.4
9. Verify space requirements and adjust design Common adjustments “Wet” walls 6” cavity Slope and ceiling exposure Cleanout access
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