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TYPES OF TRAP a.- P- Trap
b.- Q- Trapc.- S-trap
The purpose of a trap is to prevent sewer gases, and
possibly vermin, from coming in to the home. Whenwater sits in
the trap, sewer gases stay out.
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P. TrapThis trap is used with Indian water
closet. The trap are made from cast iron or P!
sheet.This trap also has water seal and prevents
entry of foul gases to the house.
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Q. TrapThis trap is used in toilet under water
closet. It is almost similar to S trap and used in
upper stoery other than ground floor.
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S. TrapThis trap is similar to P trap and is used
for fi"ing water closets in toilets.The only difference between
P trap and S
trap is that P trap is used for outlet
through the wall whereas S trap is usedfor outlet through the
floor
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According to their uses -foor traps -
gully-traps -intercepting traps FLOOR TRAPS - traps which are
used or receiving
surace waste water the foor o bath & kitchens. -a orm o foor
trap much used in practice is the nahani
trap. USE !"# -admitting waste rom foors o kitchens
$ baths $courtyards or washing places. %#"'E (')* - +.'.grating at
the top to avoid passing o coarse solid matter to house
drain.
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GULLY TRAPS -the traps which
are used to receive waste water rom wash basins $
sinks $ baths etc.
-%#"'E A) - di,erent places in
the drain pipes. -sullage rom bath $ sinks $ basin
etc. enters in through back inlet & rain or
surace water rom house tops etc. enters rom top. -a coarse
screen grating is
provided at the top to prevent entry o solid matters in
the trap.
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INTERCEPTING TRAPS - the traps which are provided at the unction
o ahouse drain & sewer.
-also called the disconnecting trap.-it disconnects the house
drain rom the street sewer.
-it is placed in the lowest end o the house drain & the
street sewer.
-the trap has an opening at the top called the rodding arm or
cleaning eye & hasa tight tting plug.this enables the trap to
be periodically cleaned o anyobstruction present inside.
-it has a deeper water seal /i.e. not less than 01 cms.2than an
ordinary trap.
