The Last 111 Test: DWV Systems (Part 3) Flashcards
Every fixture needs a…
Trap and Vent
What kind of trap does a water closet have?
Integral Trap
Holes in shower drains are what size?
1/2”
True or False: Some Urnials have integral traps.
True
What protects the house from sewer gas in case of a failure in the water seal?
House Trap
How far does the the building drain extend out past the foundation wall?
2ft
Where is the house trap located?
In the Building Sewer
What is the highest part of the seal in the trap?
Weir
How long is one copper stick?
20ft
How long is a run?
20ft
How long is a branch interval?
8ft or more
True or False: 2 1/8 bends form a short sweep?
True
Why are S-Traps illegal?
Because they Self Siphon
What was the name of the presenter that came in?
Frank Fine
What was the name of the company that came in?
Spears
How are P Traps joined?
Slip Joint Connection
What is the hardware of a P Trap?
Slip Nut, Slip Washer
What is the most important part of the trap?
Weir
How far can the weir be from the fixture?
No more than 2ft
What other types of traps are there?
Bell and Drum Traps
True or False: A vent tee has no curve in it.
True
True or False: A vent 90 is to tight for drainage.
True
How many gallons does a septic tank hold?
1000 gallons
At least how far must the septic tank be from the house?
10ft
What is Efflunent?
Untreated Wastewater
What are the two types of bacteria envirorment?
Aerobic and Anaerobic
Aerobic=
Air
Anaerobic=
No air
What prevents air from entering the septic tank?
Scum
How long is 1 cast iron stick?
10ft
How often does sludge get removed from the septic tank?
2-5 years
What is the plastic pipe with holes in it?
Perforated Pipe
True or False: A septic tank needs bacteria to function properly.
True
Fecal matter is for…
the Soil Stack
Non fecal matter is for…
the Waste Stack
