LESSON 3 Flashcards
35 It is the pipe that conveys waste from the building
to an approved point of disposal.
Drainage pipe
These are pipe accessories in the drainage system
such as a coupling, bend, wye, etc.; used to join two
or more pipes together or to change their directions.
Drainage Fittings
A pipe which carries only liquid
waste, free of human excrement or fecal matter
Waste pipe
A pipe which carries the waste from
water closets, urinals or fixtures of similar function
to the building drain. This contains human
excrements.
Soil pipe
A pipe which convey rainwater from
the roof gutter and down spout to the building
storm drain.
Storm pipe
A pipe connected to the drainage
system that conveys air to and from the system and
keep the water from being siphoned from the trap.
Vent pipe
is the drainage pipe that runs horizontally
Branch
is the vertical drainage pipe.
Stack
The selection of piping materials for the drainage
system depends on the following:
- Pressure
- Velocity
- Temperature
- Corrosiveness of the medium conveyed within
- Initial cost
- Installation cost
- Operating problem
This type of pipe is made of asbestos fibers
combined under pressure with Portland cement and
silica to form a dense and homogeneous material.
Asbestos cement pipe
is used for sewer mains,
industrial effluent and process piping,
Pressure A.C. Pipe
is used for sewer
casings for electric cables and as storm
drains.
Non-pressure A.C. Pipe
Common types of fittings
- Bend (elbows)
- Y (wye) branches
- T (tee) branches
is made from an
alloy of iron, carbon and silicon, with the controlled
amounts of manganese,
Cast Iron Soil Pipe
Types of Cast Iron Soil Pipe
Single Hub
Double Hub
Hubless
that portion of the pipe which, for a short
distance, is sufficiently enlarged to receive the end of
another pipe of the same diameter for the purpose of
making a joint. It is also known as Bell.
HUB
the end of the pipe that fits into a bell
Spigot
a hemp treated with pitch to make it moisture
proof and resistant to the elements contained in the
waste.
Oakum
plugging an opening with oakum and lead that
are pounded into place
Calking
cast in metal molds and
compacted by tamping or spinning the molds
(centrifugal casting).
CONCRETE PIPE
is extruded from a
suitable grade of shale or clay and fired in kilns
producing an extremely hard and dense corrosion
resistant material.
VITRIFIED CLAY PIPE
available in compositions designed
for various applications including drain, waste and
vent. (DWV)
PLASTIC PIPES
is used as drainage and sewer pipe for
housing complex, playground, golf course,
industrial farm and stock farm.
Polyethylene
is a thermoplastic type
which is composed of molecules of polymers.
Polyvinyl Chloride (PVC)
is designed for above and
underground sanitary piping system.
uPVC Sanitary pipes
can be used for main
sewer system and other underground
waste piping system which requires big
diameter pipes.
uPVC Sewer Pipe
Advantages of using PVC pipe
High Impact Resistance
Non – corrosive
Lightweight
High Chemical Resistance
Smooth Pipe Surface
Economical
