System in which the waste matter from bathrooms, sinks etc. as well as foul matter from the water closets are discharged in one single pipe called the Soil and Waste Pipe(SWP)
PLUMBING
SYSTEM FOR DRAINAGE
1.
Single Stack System:
2.
One Pipe System.
3.
Partially Ventilated Single Stack System.
4.
Two Pipe System.
1. Single Stack
System:
❖ System in which the waste matter from bathrooms, sinks etc. as
well as foul matter from the water closets are
discharged in one single pipe called the Soil and Waste Pipe(SWP)
❖ No
separate vent pipe is provided.
❖ Effective only
if the traps are filled with water seal of depth not less than 75 mm.
2. One Pipe System:
(Costlier than Single Stack System)
❖ One
common Soil and Waste Pipe (SWP) connects different floors and carries mo both
human excreta and sullage.
❖ A
separate vent pipe is also provided.
❖ Traps
of all water closets, basins etc. are completely ventilated. aciq pigme
❖ Cowl
is provided at the top of SWP for ventilation.
3. Single Stack
System Partially Ventilated:
❖ This
is the modified form of the single stack system and one pipe system.
❖ The
waste water from W.C, basins, sinks is discharged into one common soil and
waste pipe (S.W.P).
❖ A
relief vent pipe is also provided which provides ventilation to the traps of
water closets.
❖ The
traps of basins are not directly connected to vent pipe.
(4) Two Pipe-System:
❖ This
is the improved but costly system, which requires large number of pipes.
❖ Separate
Soil Pipe (SP) and Waste Pipe (WP) are provided which carry human excreta and
sullage respectively.
❖ Water closet is connected to Soil Pipe(S.P)
❖ Bathrooms,
sinks, lavotary basins are connected to waste pipes (WP) which are connected to
drains.
❖ All
the traps are ventilated by separate ventilation pipes.
❖ One
ventilation pipe provided alongwith soil pipe and another ventilation pipe for
the waste pipe. A total of 4 pipes - one
soil pipe, one waste pipe aswinie and two ventilation pipes are provided.
Choice or Selection of Plumbing
Systems
To Two Pipe Systems
❖ Efficient
for multi-storeyed buildings
❖ Requires
minimum use of traps.
❖ But,
large number of pipes makes the system costly.
❖ Difficulty
in accommodating pipes in buildings.
One Pipe System:
❖ Economical.
❖ Easy
to accommodate.
❖ But
require ventilation, water seals and proper connections.
❖ In
multistoreyed buildings, it requires lavotary blocks to be placed one above the
other.
Water Supply And Wastewater Engineering: Unit IV: Planning And Design Of Sewerage System : Tag: : - Plumbing System for Drainage
Water Supply and Wastewater Engineering
CE3303 3rd Semester Civil Dept 2021 Regulation | Tag: 3rd Semester Civil Dept 2021 Regulation