Stack Vents_ Vent Stacks_ headers Flashcards
What is the minimum size of a vent stack? Serving of 4 inch soil stack?
2 inch
When sizing vent stack, how is the fixture unit load determine in the sizing of the vent stack?
the total fixture unit load at the base of the stack and..
Any additional fixture unit vent load from fixtures is not connected to the stack but vented by the vent stack 
What is the maximum length of 1 1/2” vent stack may run if the 3 inch soil stock has a base fixture unit load a 47 FUs
8 m
The upper end of a vent stack may terminate in open air or be connected to a
Header
How was the developed length of a event stack determined?
From the connection at the lower end of the soil or waist deck to a open air
Event deck is not required, when
The stock receives discharge from 4 stories or less
A stock serving as a wet vent(multi story, wet, venting) does not require a vent stack
True
What is the minimum size of a vent stack for an 8 inch soil stack?
4 inches
Which of the following are acceptable terminations for the upstream end of vent stack
Header or open air
Where is a downstream termination point of a vent stack?
At the highest connection branch or fixture to the stack
A header is sized using table
7.5.8.3
The length of a header is
The developed length from open air to the furthest, soil, or waste pipe connection
A Header serve
More than one vent stack or stack vent
All headers terminate and open air in a minimum size of
3 inch
What is the size of a header serving 185 fixture unit with a total developed length of 57 m
3 inch
