1. What is the purpose of a DWV system in a building.
2. What is a fixture drain, give examples
3. What is the proper depth needed for a trap to create a seal
4. What fixture has a built in trap
5. What does a grease interceptor do and where are they found
6.The point where waste water leaves the the trap and enters the drainage piping is referred to as what
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
8.There are 8 types of traps failures list and describe each:
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To remove waste safely from the building.
2. What is a fixture drain, give examples
A drain that connects the fixture to the buildings DWV, Kitchen sinks lavatories, bidets and showers
3. What is the proper depth needed for a trap to create a seal
2 to 4 inches.
4. What fixture has a built in trap
Urinals.
Separates grease out of the waste water – Restaurants, commercial kitchens, or auto repair shops.
6. The point where waste water leaves the trap and enters the drainage piping is referred to as what
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
1. Distance from the fixture outlet to the crown weir may not exceed 24 inches.
Cracks – caused by worn washers, a broken nut, solder joint, or glue joint
To remove all water and sewage from the building. Section: 15.2
2. What is a fixture drain, give examples
It connects fixtures to the building's DWV system. PO plugs for lavatories and a basket strainer for a kitchen sink are examples. Section: 15.2
3. What is the proper depth needed for a trap to create a seal
Two to four inches. Section: 15.2
4. What fixture has a built in trap
A water closet. Section: 15.2
5. What does a grease interceptor do and where are they found
Prevents grease from entering building drainage systems and sewers. Section: 15.4
6.The point where waste water leaves the trap and enters the drainage piping is referred to as what
Fixture drain Section: 15.6
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
1. The vertical distance from the fixture outlet to the crown weir may not exceed 24 inches.
2. The horizontal distance from the crown weir to the trap vent varies depending on the diameter of the trap.
3. The total drop in the horizontal pipe from the crown weir to the vent may not exceed one pipe diameter.
8.There are 8 types of traps failures list and describe each:
Title: DWV 1.
Posted: 09/17/2012 10:15 AM
Category: Plumbing
Description:
Read Pages 15.1-15.13 Section 1.00-6.00 and answer the following questions:
1. What is the purpose of a DWV system in a building.
DWV systems carry solid and liquid waste out of buildings and vent sewer gasses (overview)
2. What is a fixture drain, give examples
fixture drains strain waste water before it enters pipes, basket strainers and pop up plugs (3.0.0)
3. What is the proper depth needed for a trap to create a seal
2-4 inches (4.0.0)
4. What fixture has a built in trap
water closet and urinals (4.0.0)
5. What does a grease interceptor do and where are they found
keeps grease from entering pipes, restaurants auto shops (4.1.0)
6.The point where waste water leaves the the trap and enters the drainage piping is referred to as what
fixture drain or trap arm (4.2.0)
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
the vertical distance from the fixture outlet to the crown weir may not exceed 24 inches. horizontal distance from the crow weir to the trap vent varies from the diameter of the pipe. total drop in the horizontal pipe may not exceed one pipe diameter (4.3.0)
8.There are 8 types of traps failures list and describe each:
siphonage: trap is not properly vented or blocked reduced pressure causes seal to fail(4.4.1)
aspiration: negative pressure draws water from the trap causing the seal to fail(4.4.2
momentum: water rushing through the pipe causes standing water in the trap to be forced out breaking the seal(4.4.3)
oscillation: air currents cause water in the trap to rise or fall breaking the seal(4.4.4)
back pressure: pressure inside the pipe is greater than the atmospheric pressure form a water plug and back pressure destroying the seal(4.4.5)
evaporation: water evaporates after long period of no use causes seal to fail(4.4.6)1. What is the purpose of a DWV system in a building.
The purpose is to remove waste from a building safely and efficiently.
2. What is a fixture drain, give examples
A fixture drain connects the fixtures to the buildings dwv piping system one example is a basket strainer.
3. What is the proper depth needed for a trap to create a seal
the proper depth is 2-4 inches.
4. What fixture has a built in trap
Every modern fixture has a built in trap.
5. What does a grease interceptor do and where are they found
A grease interceptor prevents hazardous materials from entering the buildings drainage systems, the are found in commercial kitchens, restaurants and auto repair shops.
6.The point where waste water leaves the the trap and enters the drainage piping is referred to as what
The point where water leaves the trap and enters the drainage piping is referred to as the fixture drain.
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
One is the vertical distance from the fixture outlet to the crown weir may not exceed 24 inches, the second the horizontal distance from the crown weir to the trap vent, the third is the total drop
8.There are 8 types of traps failures list and describe each:
1. what is the purpose of a DWV system in a building.
A circuit of piping designed to remove wastes from plumbing fixtures and drain safely.
2. What is a fixture drain, give examples
connects fixtures to the buildings dwv piping system. Example- basket strainer for a kitchen sink.
3. What is the proper depth needed for a trap to create a seal
2 to 4 inches
4. What fixture has a built in trap
water closets and urinals
5. What does a grease interceptor do and where are they found
prevents hazardous or undesirable materials from entering building drainage system. Restaurants, commercial kitchens, auto repair shops
6.The point where waste water leaves the trap and enters the drainage piping is referred to as what
fixture drain also called the trap arm
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
May not exceed 24 inches, the trap vent, the total drop
8. There are 8 types of traps failures list and describe each:
Siphonage, aspiration, momentum, oscillation, back pressure, evaporation, capillary attraction
Logan Coolbaugh
Description:
Read Pages 15.1-15.13 Section 1.00-6.00 and answer the following questions:
1. What is the purpose of a DWV system in a building.
Drain, waste, vent
2. What is a fixture drain, give examples
connects fixtures to buildings drain system.
3. What is the proper depth needed for a trap to create a seal
2-4 inches
4. What fixture has a built in trap
toilet
5. What does a grease interceptor do and where are they found
restaurants, commercial kitchens, or auto repair shops separates solid waste and waste water
6.The point where waste water leaves the trap and enters the drainage piping is referred to as what
flow
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
Crown no more 24 in. next is the crown weir to the trap vent. The third and final important dimension is the drop.
8. There are 8 types of traps failures list and describe each:
Siphonage - it occurs when there is negative pressure inside the DWV piping.
Aspiration – it takes place when a large amount of water is pushed through the seal and pulls the extra waste water through with it.
Momentum – the force or speed of the water rushing through a pipe can force the standing water out of the trap
Oscillation – or wind effect is the least common way a trap will lose its seal.
Back pressure – is pressure inside the DWV pipe that causes the seal to break
Evaporation – traps may lose seal due to evaporation.
Capillary Attraction – may cause a trap to lose seal because of porous material such as string or paper.
Cracks – more common cause of waste and sewer gas leaking into the trap.
Helps remove waste from the building.
2. What is a fixture drain, give examples
Connects fixtures to the buildings dwv system.
3. What is the proper depth needed for a trap to create a seal
two to four inches.
4. What fixture has a built in trap
urinals
5. What does a grease interceptor do and where are they found
seperates hazardous materials from the waste water. Found in restaurants and auto repair shops.
6.The point where waste water leaves the the trap and enters the drainage piping is referred to as what
crown weir
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
Crown weir may not exceed 24 inches
8.There are 8 types of traps failures list and describe each:
1. What is the purpose of a DWV system in a building?
Drain, waste, and vent system Section 1.0.0
2. What is a fixture drain, give examples
Connects fixtures to the building’s DWV piping system Section 3.0.0
3. What is the proper depth needed for a trap to create a seal
2 to 4 inches section 4.0.0
4. What fixture has a built in trap
Just the toilet
5. What does a grease interceptor do and where are they found
Found in restaurants auto repair shops and commercial kitchens. Interceptors designed to capture solid wastes such as grease, waste water flows into a chamber through screens. Section 4.1.0
6.The point where waste water leaves the the trap and enters the drainage piping is referred to as what
Crown weir
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
The vertical distance from the fixture outlet to the crown weir may not exceed more than 24 inches. The second dimension is the horizontal distance from the crown weir to the trap vent. The third dimension is the total drop in the horizontal pipe from the crown weir to the vent. Section 4.3.0
8.There are 8 types of traps failures list and describe each:
1. Siphonage-Happens if the trap is not properly vented
2. Aspiration- Takes place when a large volume of water flows near the trap, creating a negative pressure.
3. Momentum- The momentum, or speed of the water rushing through a pipe can force the standing water out of a trap and empty it, thus breaking the seal.
4. Oscillation- Oscillation, or wind effect, is one of the least likely ways a trap can lose its seal. Where there are strong upward or downward air currents, the pressure or suction of the moving air may cause the water in the trap to rise or fall.
5. Back pressure- Black pressure can cause a trap seal to break. Back pressure is pressure inside the DWV piping that is greater than the atmosphere pressure.
6. Evaporation- A trap may lose its seal as a result of evaporation. This is most likely to happen in traps that are seldom used. The water evaporates causing the seal to break.
7. Capillary attraction- Capillary attraction may cause a trap seal to break if a porous material, such as string or paper is caught in the trap. The porous material acts as a wick and draws the water out of the trap by capillary action.
8. Cracks- A more common cause of waste and sewer gas leaking into a building is a crack in the trap. Cracks can be caused by worn washers, or by a broken nut, solder nut, or glue joint.
1. What is the purpose of a DWV system in a building?
The DWV system inside a building is a circuit of piping designed to remove the wastes from plumbing fixtures. (pg. 15.2)
2. What is a fixture drain, give examples
A basket drain and PO plugs. (pg. 15.2 sec. 3.0.0)
3. What is the proper depth needed for a trap to create a seal
2-4 inches deep.
4. What fixture has a built in trap
Toilet
5. What does a grease interceptor do and where are they found
They are installed in restaurants, commercial kitchens, or auto repair shops. They are designed to capture solid wastes such as grease, wastewater flows into a chamber through screens.
6. The point where waste water leaves the the trap and enters the drainage piping is referred to as what?
Crown Weir
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
First the vertical distance from the fixture may not exceed 24 inches, second is the horizontal distance from the crown weir to the trap vent, and third is the total drop.
8.There are 8 types of traps failures list and describe each:
1. Siphonage- a negative pressure inside the DWV(4.4.1)
2. Aspiration- the drawing in, out, or up of something, usually a fluid.(4.4.2)
3. Momentum- or speed of water rushing through a pipe can force standing water out of the trap thus breaking the seal.(4.4.3)
4. Oscillation- or wind affect, the pressure or suction of the moving air may case the seal to break.(4.4.4)
5. Back pressure- can cause a trap seal to break.(4.4.5)
6. Evaporation- water evaporates, cause the seal break.(4.4.6)
7. Capillary attraction- may cause the seal to break if there is a porous material in the trap(4.4.7)
8. Cracks- can be caused by worn washers, or by a broken nut, solder joint or glue joint(4.4.8)
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
1. what is the purpose of a DWV system in a building.
Vents protect people from pathogens, orders and gas. 15.0
2. What is a fixture drain, give examples
basket strainer for a kitchen sink 15.2
3. What is the proper depth needed for a trap to create a seal
2 to 4 inch 15.2
4. What fixture has a built in trap
every plumbing fixture. 15.2
5. What does a grease interceptor do and where are they found
they prevent hazardous materials from entering a building, they can be found in restaurants commercial kitchens, or auto repair shops.
15.4
6. The point where waste water leaves the trap and enters the drainage piping is referred to as what
chamber 15.5
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
Not exceed 24 inch, because the water will not carry the waste.
8. There are 8 types of traps failures list and describe each:
siphonage- occurs when there is a negative pressure inside DWV piping.
1. What is the purpose of a DWV system in a building.
is designed to remove this waste safely from the building’s interior 1.0.0 introduction
2. What is a fixture drain, give examples
example of fixture drains include a basket strainer for a kitchen sink , POplugs for lavatories, and other strainers. 3.0.0 Fixture drains.
3. What is the proper depth needed for a trap to create a seal
2-4 inches 4.0.0 traps
4. What fixture has a built in trap
p-traps 4.1.0 Types of traps
5. What does a grease interceptor do and where are they found
it hazardous or undesirable material, entering the building drainage system. Found in normally restaurants 4.1.0types of traps
6.The point where waste water leaves the the trap and enters the drainage piping is referred to as what
Fixture drain, or Trap arm 4.2.0 parts of traps
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
Crown weir may not exceed 24 inches. Horizontal distance from the crown weir to the trap vent, varies depending on the diameter of the trap. Total drop in the horizontal pipe from the crown weir to the vent. 4.3.0 trap installation Requirements
8.There are 8 types of traps failures list and describe each:
siphonage- negative pressure inside of dwv
1. What is the purpose of a DWV system in a building.
The purpose of a dwv system in a building is to remove wastes from plumbing fixtures and drains safely reliably and efficiently.(15.2 2.0.0)
2. What is a fixture drain, give examples
Fixture drains connect fixtures to the buildings dwv piping system. (15.2 3.0.0)
3. What is the proper depth needed for a trap to create a seal
the proper depth needed is 2-4 inches. (15.2 4.0.0)
4. What fixture has a built in trap
Water closets and urinals. (15.2 4.0.0)
5. What does a grease interceptor do and where are they found
A grease interceptor is installed in restaurants commercial kitchens or repair shops they take the undesired grease out of the water. (15.4 4.1.0)
6. The point where waste water leaves the trap and enters the drainage piping is referred to as what
Fixture drain or trap arm. (15.6 4.2.0)
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
Vertical distance horizontal distance and total drop. (15.7 4.3.0)
8. There are 8 types of traps failures list and describe each:
Description:
Read Pages 15.1-15.13 Section 1.00-6.00 and answer the following questions:
1. what is the purpose of a DWV system in a building.
To remove waste from a building’s interior sec.1
2. What is a fixture drain, give examples?
A basket strainer for a kitchen sink, plugs for lavatory, and other strainers sec. 3
3. What is the proper depth needed for a trap to create a seal
Two to Four inches sec. 4
4. What fixture has a built in trap
Water closets or urinals. Sec.4
5. What does a grease interceptor do and where are they found
The waste goes into a separate chamber and separates the grease from the water; they are found in restaurants and in commercial kitchens. Sec 4.1.0
6.The point where waste water leaves the trap and enters the drainage piping is referred to as what
Fixture drain sec.4.2.0
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
Vertical distance from fixture outlet and to the crown should not exceed 24in. fall is a ¼ inch per foot. Total drop should be less than one pipe diameter. Sec.4.3
8. There are 8 types of traps failures list and describe each:
Cracks, capillary attraction, evaporation, back pressure, oscillation, momentum ,aspiration ,siphonage. Sec.
1. What is the purpose of a DWV system in a building.
Remove wastes from the plumbing fixtures
2. What is a fixture drain, give examples
kitchen sink, po plugs
3. What is the proper depth needed for a trap to create a seal
2 to 4 inches
4. What fixture has a built in trap
urinals and water closets
5. What does a grease interceptor do and where are they found
barbers hospitals or pet grooming
6.The point where waste water leaves the the trap and enters the drainage piping is referred to as what
waste water flows into chambers through screens. Because solids are are heavier than wastewater , so gravity cause it to fall to the bottom of the chamber
7 .Read Section 4.3.0 list and explain the 3 critical dimensions for installing traps.
the vertical distance from fixture outlet to the crown weir may not exceed 24 inches
horizontal distance from the crown weir to trap vent varies depending on the diameter of the trap
total drop in the horizontal pipe from the crown weir to the vent may not exceed one pipe diameter ¼ inch per foot
8.There are 8 types of traps failures list and describe each:
1.Siphonage: It occurs when there is negative pressure inside the DWV piping system.