1.
Project Report on
Drainage System
At
Dezyne E’cole College,Ajmer
Submitted to :
Dezyne E’cole College Towards
The Partial fulfilment of the
Master’s of Science in
Interior Designing
By
Vartika Khandelwal
M.sc.I.D. 3rd Sem.
Subject :
Advance Building Services

2.
DRAINAGE SYSTEM
INTRODUCTION : As explained earlier, potable water supplied to a buildings is
distributed to various areas like kitchen, bath, W.C. etc. through a network of pipes
provided with plumbing or sanitary fittings at their terminal ends. Adequate
arrangements are required to be made for quick collection, conveyance and disposal
of used water from the fittings without any risk to the health occupants. It is also
essential that the rain or storm water from the roof and paved areas of building and
the ground surface is suitably collected and discharged without flooding the area.
The Term Drainage or sewerage includes the system of removal of sullage or waste
water (from floor traps, kitchen, bath, and wash basin), soil water (from W.C. and
urinals) and storm water from a building and conveying the same upto its ultimate
point of treatment and disposal. The system of drainage can be broadly divided in
two parts.
Drainage System
Drainage below the Ground Drainage above the ground
Combined system Separate system
Partially combined system
Drainage System Below the Ground Drainage System Above the Ground

3.
TYPES OF PIPES
The pipes used in Drainage system may be of cast iron, reinforced concrete,
pre-stressed concrete, mild steel, wrought iron, asbestos, P.V.C.. or stone
ware.
Minimum Size of pipes commonly used in house drainage are as under :
1. Underground Horizontal pipes laid to slope………………......100mm dia.
2. Vertical soil pipe (Above Ground)………………………………100mm dia.
3. Vertical waste pipe (Above Ground)……………………...50 to 75mm dia.
4. Branch soil pipe……………………………………………..60 to 75mm dia.
5. Vent pipe……………………………………………………………50mm dia.
6. Rain water pipe…………………………………………………….75mm dia.
7. Waste pipe from individual kitchen, sink, washbasins etc…….40mm dia.
Drainage System Below the Ground
Stoneware Pipes
Cement Concrete Pipe
C.I. Pipe
Drainage System Above the Ground
Cast Iron Pipes
Asbestos Cement Pipe
P.V.C. Pipes

4.
TRAPS
TRAPS : A Trap is a fitting provided in a drainage system to prevent entry of
foul air of gases from the sewer or drain into the building. The barrier to the
passage of foul air is provided by the water seal in the trap. In its simples
form a trap is merely a double bend or loop in the sanitary fitting, the depth of
water seal being the distance between the top of the first bend and the bottom
of the second.
SHAPES OF TRAPS
P-Trap Q-Trap S-Trap

5.
TYPES OF TRAPS
1. Floor Trap or Nahani Trap : Trap Provided in floors to collect used water
from floors of bathroom, kitchen or washing floor etc. are known as floor
trap.
Floor Trap
2. Gully Trap : Gully trap is a deep seal trap which is provided on the
external face of wall for disconnecting the waste water flowing from
kitchen, bath, wash basin & floors from the main drainage system. The
deep water seal forms a barrier for preventing the passage of foul air
from house drain to the inside of the building.
Gully Trap
Floor trap or
Nahani trap
Gully Trap Intercepting Trap Grease Trap Slit Trap

6.
During My Residential project I supposed to give the Drainage system in the
house which was connected to the each floor of the house and at the same
time connected with the underground floor level for septic or sewerage water.
The Detail specification are as follows :
Main Water Supply Pipe
Distributer Water Pipe
Waste Water Pipe
Soil Waste Water Pipe