Handsrusinkc
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I am taking out a sink and putting in 2 sinks in my bathroom on the opposite wall. Luckily I have a crawl-space below and an attic above.
I bought some good plumbing books, but they don't cover pipe sizes
I would like to know how to run the DWV system The sink drains will be run separately, because there is a set of drawers between the sinks.
I will run the sink drains to a pvc pipe in the wall that will go up to the attic (for venting) and down through the floor for drainage.
1) what size diameter should this pipe be?
2) When I join these two DRAIN pipes together in the crawl space, should they "become" a pipe of bigger diameter? If so, how big? can they join with a "T" or does it need to be more of a "Y" so it flows better?
(I know the rule about 1/4"drop per foot of linear/lateral travel.)
3) In the attic for venting, can I use a "T" here or is a "Y" better? How big should the pipe be that I end up putting out through the roof (It will be the two sink vents combined into one pipe for a vent)?
your help is greatly appreciated
I bought some good plumbing books, but they don't cover pipe sizes
I would like to know how to run the DWV system The sink drains will be run separately, because there is a set of drawers between the sinks.
I will run the sink drains to a pvc pipe in the wall that will go up to the attic (for venting) and down through the floor for drainage.
1) what size diameter should this pipe be?
2) When I join these two DRAIN pipes together in the crawl space, should they "become" a pipe of bigger diameter? If so, how big? can they join with a "T" or does it need to be more of a "Y" so it flows better?
(I know the rule about 1/4"drop per foot of linear/lateral travel.)
3) In the attic for venting, can I use a "T" here or is a "Y" better? How big should the pipe be that I end up putting out through the roof (It will be the two sink vents combined into one pipe for a vent)?
your help is greatly appreciated