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Technology in Architecture. 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.
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Technology in Architecture Lecture 15 Waste & Vent Systems Waste & Vent Sizing Procedure Bathroom Design
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 Note: Drain fittings are 45º Individual vents Circuit vents Soil stack Vent stack Stack vent “Wet stack” Vent through roof (VTR) S: p. 1008, F.22.10
Drains & Sewers Note: Drain fittings are 45º House drain House sewer Storm drain Clean outs House traps Fresh air inlet S: p. 1007, F.22.9
1. Identify waste & soil locations Clusters are more efficient S: p. 1014, F.22.17
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.22.2.2
5. Determine loads Fixture location may control size S: p. 1022, F.22.24
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
Design Considerations ADA compliance • ANSI Standard A117.1 1986 • Wheel chair access • Grab bars • Counter top/fixture heights Visual privacy Acoustical privacy