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Old 01-22-2014, 09:23 PM   #1
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Whole house reno questions


Doing a full house renovation and at the moment, all walls are down to studs and all insulation has been pulled. Structurally, a few walls are coming down and installing the appropriate beams, and we are converting the garage to living space. We will also be replacing all windows in the house, as well as making some bigger and some smaller.

All plumbing lines will be replaced in the home from the supply lines to the sewer drain that we've already dug up in the crawlspace. My plumber has the riser diagrams for the drainage/gas/water supply lines. I noticed that the bathtub and bathroom sinks are 1-1/2 inch traps and lines following that. My question here is wouldn't it be smarter to make all lines 2" and up? My girlfriend's sister has the same style home around the corner and her bathtub for instance backfills with water during a shower and takes about 2-3 minutes to drain once the water is turned off. Would increasing the diameter help this issue?
Are there any other plumbing upgrades or must have I should look for? Thermostatic valves for instance?

All new electrical will be wired along with new fixtures. Home currently has Federal Pacific panels and they have gotta go, upgrading to a 200 amp service as well from 60. From an electrical standpoint, is there anything I should do/request as an upgrade or must have as well.

Any other suggestions would be great!

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Old 01-22-2014, 09:42 PM   #2
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Here is the drainage riser for reference

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Old 01-22-2014, 11:29 PM   #3
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Whole house reno questions


Your pipe sizing is correct. 1 1/2" is standard for a tub and lav. But I have concerns with your pipe layout as shown in the diagram. You have a 2 story wet vented stack that is not allowed per my code.
Where are you located? Do you know what code is used in your town?

Also, I suggest you ask your questions in their appropriate forum, such as elect in electric and plumbing in plumbing, etc. That will get you more responses.
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Old 01-23-2014, 07:32 AM   #4
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Whole house reno questions


I am located in NJ.
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Old 01-23-2014, 01:27 PM   #5
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Whole house reno questions


your plumbing and electrical contractors should be informing you of any upgrades that need to be done. also the local building office will inform you of this if you have submitted plans before getting the required permits
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