Transcript Slide 1

Technology in Architecture
Lecture 15
Waste & Vent Systems
Waste & Vent Sizing Procedure
Waste & Vent Systems
Fundamentals
Siphon action
can drain water
Trap blocks
sewer gas
Vent breaks
siphon
M: p. 1006, F.22.8
Air Gaps
Eliminate the potential for cross contamination
M: p. 1009, F.22.11
Bathroom Design Considerations
ADA compliance
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ANSI Standard A117.1 1986
Wheel chair access
Grab bars
Counter top/fixture heights
Visual privacy
Acoustical privacy
Vents and Stacks
Individual vents
Circuit vents
Soil stack
Vent stack
Stack vent
“Wet stack”
Vent through
roof (VTR)
M: p. 1008, F.22.10
Note: Drain fittings are 45º
Drains & Sewers
House drain
House sewer
Storm drain
Clean outs
House traps
Fresh air inlet
M: p. 1007, F.22.9
Note: Drain fittings are 45º
Waste & Vent Sizing Procedure
1. Identify waste & soil locations
Clusters are more
efficient
M: p. 1014, F.22.17
2. Layout system
vertically & horizontally
Grouped fixtures can
be stacked in a
vertical riser
M: p. 1027, F.22.31
3. Size Traps
Trap size is used
when connecting
to main
M: p. 1017,
4. Calculate
Drainage Fixture
Units (DFU)
Pipe sizes based
on DFU
M: p. 1017, T.22.2.2
5. Determine loads
Fixture location
may control size
M: p. 1022,
F.22.24
6. Determine slope and size of
horizontal drains
Slope may be
constrained by
depth of floor
cavity
M: p. 1020, T.22.5
7. Verify maximum vent length
Measured from
plans
M: p. 1022,
F.22.24
8. Size vents according to
DFU and length
Calculate for each
vent load and
developed length
M: p. 1019, T.22.4
9. Verify space requirements and
adjust design
Common adjustments
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“Wet” walls  6” cavity
Slope and ceiling exposure
Cleanout access