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Technology in Architecture

This lecture covers the fundamentals of waste and vent systems in bathroom design, focusing on sizing procedures. It discusses important concepts like siphon action, air gaps to prevent cross-contamination, and the layout for efficient drainage and venting. Participants will learn how to identify fixture locations, size traps and vents based on drainage fixture units (DFU), ensure proper slopes and lengths for horizontal drains, and make necessary adjustments for ADA compliance. Mastering these principles is essential for effective and safe plumbing in architectural design.

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Technology in Architecture

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  1. Technology in Architecture Lecture 15 Waste & Vent Systems Waste & Vent Sizing Procedure Bathroom Design

  2. Waste & Vent Systems

  3. Fundamentals Siphon action can drain water Trap blocks sewer gas Vent breaks siphon S: p. 1006, F.22.8

  4. Air Gaps Eliminate the potential for cross contamination S: p. 1009, F.22.11

  5. 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

  6. 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

  7. Waste & Vent Sizing Procedure

  8. 1. Identify waste & soil locations Clusters are more efficient S: p. 1014, F.22.17

  9. 2. Layout system vertically & horizontally Grouped fixtures can be stacked in a vertical riser S: p. 1027, F.22.31

  10. 3. Size Traps Trap size is used when connecting to main S: p. 1017, T.22.2

  11. 4. Calculate Drainage Fixture Units (DFU) Pipe sizes based on DFU S: p. 1017, T.22.2.2

  12. 5. Determine loads Fixture location may control size S: p. 1022, F.22.24

  13. 6. Determine slope and size of horizontal drains Slope may be constrained by depth of floor cavity S: p. 1020, T.22.5

  14. 7. Verify maximum vent length Measured from plans S: p. 1022, F.22.24

  15. 8. Size vents according to DFU and length Calculate for each vent load and developed length S: p. 1019, T.22.4

  16. 9. Verify space requirements and adjust design Common adjustments • “Wet” walls  6” cavity • Slope and ceiling exposure • Cleanout access

  17. Bathroom Design

  18. Design Considerations ADA compliance • ANSI Standard A117.1 1986 • Wheel chair access • Grab bars • Counter top/fixture heights Visual privacy Acoustical privacy

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