Squints2See
Member
Hello,
If I could get some confirmation that this plan is going to work it would be greatly appreciated. I am adding a half bath to an existing laundry room. Currently there is no vent at all in this room, thanks to an idiot builder. Also, the p-trap is below the floor in the basement (heated) between the floor joists. I prefer to keep this configuration as having the laundry stacked (front loaders) and having a custom cabinet to enclose it requires me to keep things pretty tight vertically. If I move the trap above the floor into the wall cavity, it will be hard to keep all of the connections (dryer vent, water lines, drain line, electrical) in a tight group to stay within the cabinet. From my research, WV abides by the IPC and the IRC which to my knowledge only require that the Standpipe be a maximum 42" from the trap which I should be able to meet, and no minimum requirement or same floor requirement.
Questions I have are:
- Do I need the vent for the Standpipe to be 2" or does the 1.5" suffice? (Distance to fresh air through roof maybe around 50' plus so this may make a difference)
- Currently the standpipe drains into a 2" line that runs 25'+ to the main 3" horizontal drain line at the back of the house. I thought about continuing to use this line and adding the lavatory into it, but that would leave the newly installed 3" line for the WC without a vent, which I assume is not allowed. Thoughts?
I will be sure to use SaniTee's for the vent/fixture connections and sweep elbows for the drain connections.
Also, the reason for the couple of turns below the standpipe before the p-trap is due to an LVL directly under the wall that cannot be cut into. I am going to try and squeeze the drains between the lvl and the next joist over and do away with the extra turns, but it may not be possible.
Thanks
If I could get some confirmation that this plan is going to work it would be greatly appreciated. I am adding a half bath to an existing laundry room. Currently there is no vent at all in this room, thanks to an idiot builder. Also, the p-trap is below the floor in the basement (heated) between the floor joists. I prefer to keep this configuration as having the laundry stacked (front loaders) and having a custom cabinet to enclose it requires me to keep things pretty tight vertically. If I move the trap above the floor into the wall cavity, it will be hard to keep all of the connections (dryer vent, water lines, drain line, electrical) in a tight group to stay within the cabinet. From my research, WV abides by the IPC and the IRC which to my knowledge only require that the Standpipe be a maximum 42" from the trap which I should be able to meet, and no minimum requirement or same floor requirement.
Questions I have are:
- Do I need the vent for the Standpipe to be 2" or does the 1.5" suffice? (Distance to fresh air through roof maybe around 50' plus so this may make a difference)
- Currently the standpipe drains into a 2" line that runs 25'+ to the main 3" horizontal drain line at the back of the house. I thought about continuing to use this line and adding the lavatory into it, but that would leave the newly installed 3" line for the WC without a vent, which I assume is not allowed. Thoughts?
I will be sure to use SaniTee's for the vent/fixture connections and sweep elbows for the drain connections.
Also, the reason for the couple of turns below the standpipe before the p-trap is due to an LVL directly under the wall that cannot be cut into. I am going to try and squeeze the drains between the lvl and the next joist over and do away with the extra turns, but it may not be possible.
Thanks
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