HELP! Finishing basement bathroom rough-in
benny312
3 years ago
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Comments (6)
benny312
3 years agoRelated Discussions
Bathroom plumbing rough in for future finishing?
Comments (6)No doubt that builders price is an off the top of his head price for a completed 1/2 bath, including all walls & fixtures, but as a plumber I can tell you the truth of the matter is, based upon the information at hand it is impossible to even venture a guess for the roughin cost. First of all, what is the depth of the municipal sewer? What is the terraine from the sewer location to the house? Is it level or does is slope up or down, and if it slopes, what is the height or drop of slope? What is the length of the setback from the sewer tap location to the house? The sewer line is a 3" line and it requires a 1/4" per foot pitch all the way from the house to the municipal sewer. let us consider a typical 75' setback from the front of your property line to the structure. Now add another 5ft for the width of the utility easement from the municipal sewer line to your property line so the house sewer would then be 80' long, allowing that it is run in a straight line taking the most direct route, which is rare, but for illustration we will use it. The house sewer is 80ft long so with a 1/4"/ft pitch that is 80 x 0.25 = 20". You then need to know the location where the proposed watercloset will be set. The closet bend (elbow) under the watercloset requires 12" and you must have a 1/4"/ft pitch from the WC to the house sewer entry point. Hypothetically let us say that will be 20' so the pitch would be 20' x 0.25" = 5" plus 12" for the closet bend for a total of 17". You then add the pitch for the house sewer and the DWV run to the watercloset and get a total of 37". Now for illustration let us assume you want the basement to be 6' below grade and the terraine is flat. The floor would then be 72" below grade and the sewer and drain line must run 37" below the finished floor, so the municipal sewer line would have to be a minimum of 109" (9ft) below grade. Generally the sewer lines run between 3 & 10ft deep depending upon whether you are on the upstream or downstream end of the sewer run. In most instances when building a house with a basement the sewer line will enter through the basement wall at some point above the finished floor. If that is the case here, they could still intall a bathroom in the basement but it would require installing an effluent lift pump system. The advantage is that it could be placed wherever they want it, but it requires two vents. The pump housing is required to have a dedicated vent that cannot be attached to any other vent line in the house, and that vent must terminate through the roof. The fixtures must be vented in the conventional manner as defined by code....See MoreAdding basement bathroom
Comments (2)Do you know where the drain drains to? It could go to septic, or it could be connected to the under-slab drain pipe, or to that footing drain system, or some other version of a "water" drain which would not be appropriate for toilet waste. Without knowing for sure I'd advise you to not use the drain....See MoreHelp with Basement Bathroom
Comments (1)Run a dedicated new vent for the new rough in. I know this drawing isn't to scale but code where I am is no fixture greater than 10' from vent. I don't think an air admittance valve will do anything for a toilet and 2 more fixtures, in fact I'll take that bet. More qualified pipe biters may concur....See MoreBasement brown bathroom needs help
Comments (16)Thanks all. I’ve got a lot of good ideas here. I’m going to get some light greige and greenish-blue paint chips and probably come back here for opinions :) PS Re: lighting - I’ll look for a vanity light that doesn’t point downwards. I also have a ceiling light+fan by the shower, but the light it gives is not super bright or nice. Wonder if I can change the bulb. Thanks again!...See Morebenny312
3 years agoPatricia Colwell Consulting
3 years ago
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