Scribd
Upload
323 views2 pages

Building Utilities 1:: Plumbing and Sanitary

The document discusses different types of plumbing traps used in drainage systems. A P-trap is the most common type used on fixtures like sinks, lavatories, and showers to form a water seal barrier against sewer gases. Other permissible traps include drum traps, stand traps, and high/low hub traps. Objectionable traps that should not be used include S-traps and bag traps. P-traps come in common seal and deep seal varieties. Deep seal P-traps are designed for abnormal situations like extreme heat or atmospheric changes. Drum traps are also large diameter water seal devices. Grease traps must be installed where kitchen sink wastes contain grease.

Uploaded by

Timothy Ryan Wang
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
323 views2 pages

Building Utilities 1:: Plumbing and Sanitary

The document discusses different types of plumbing traps used in drainage systems. A P-trap is the most common type used on fixtures like sinks, lavatories, and showers to form a water seal barrier against sewer gases. Other permissible traps include drum traps, stand traps, and high/low hub traps. Objectionable traps that should not be used include S-traps and bag traps. P-traps come in common seal and deep seal varieties. Deep seal P-traps are designed for abnormal situations like extreme heat or atmospheric changes. Drum traps are also large diameter water seal devices. Grease traps must be installed where kitchen sink wastes contain grease.

Uploaded by

Timothy Ryan Wang
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 2

BUILDING UTILITIES 1: P-Trap is used on the following fixtures:

Plumbing and Sanitary 1. Lavatories


By: Archt. Chris Luna 2. Sinks
3. Shower baths
Plumbing Traps 4. Urinals
5. Drinking fountain
A trap on a plumbing fixture is a device
scientifically designed to prevent the back flow Permissible Traps:
of gases coming from the septic tank or sewer 1. P-Trap
line passing through the outlet of the fixture 2. Drum Trap
3. Stand Trap
These gases are identified as hydrogen, 4. Brass Trap
hydrogen sulfide, methane, or carbon dioxide 5. High Hub Trap
and even a small amount of carbon monoxide 6. Low Hub Trap
considered dangerous to human health 7. Extra Heavy Trap
8. Sink or Lavatory Trap
The basic function of the trap in a drainage
system is to prevent those objectionable gases Objectionable Traps:
from entering the plumbing system. 1. S-Traps
2. Bag Traps
The principle is to form a mechanical barrier 3. Mechanical Sealed Traps
against the passage of sewer air 4. Metal Partitions Traps

Water Sealed P-Trap is classified into two:


1. The Common Seal
It has 5 centimeters deep water seal
between the overflow and the dip, which
will offer resistance against abnormal
conditions
2. The Deep Seal
This trap may be used under normal
condition, but it’s purposely designed for
abnormal situations

For Deep Seal:


a. extreme heat condition in the area
b. increase and decrease of atmospheric
condition
c. circumstances where total ventilation
cannot be obtained

Page 1 of 2
P-Trap Garage Trap
1. All traps shall be self cleaning  Garages
2. P-Trap shall be installed as near the  Auto Repair Shops
fixture as possible  Greasing Rack Drains
3. Short vertical leg eliminates high
velocity of water discharge that creates
siphon, the major cause of trap seal loss
4. P-trap shall be installed within 60
centimeters of the fixture it serve
5. It shall be accessible for cleaning
through the bottom opening closed by a
screw plug

Drum Trap
 It is also classified as a water seal
device. The name was derived from its Source:
size being large in diameter.  Max B. Fajardo, Plumsbing Design and
Estimate, 5138 Trading, 2001
 George S. Salvan, Architectural Utilities 1:
Plumbing & Sanitary, Goodwill Bookstore,
2005

Grease Trap
 Grease traps of adequate capacity must
be installed wherever greasy wastes
from kitchen sinks

Page 2 of 2

You might also like