YOU will have to use the tail which fits into the tub DRAIN HOLE. Usually this will be prescribed by the size of the hole in the tub and that will be what you already have. This is often inch and a quarter. Unless there are other fixtures emptying into the branch and unless the line isn't well vented you won't likely notice any difference in performance since the narrowest point is right at the tub. The cross sectional area of the narrowest point will determine how much fluid will pass through it and this will be the exit from the tub from which you can deduct the area of the cross and mechanical opener or any other obstruction often included to keep your body piercing jewelry from going down the drain. This will be less than the inch and a half you already have. Remember too that the cross sectional area follows the inverse square law. That is, for example, if you reduce the diameter by half, you reduce the cross sectional area by four.
To demonstrate this, a square one inch by one inch is one square inch. Double this to two inches by two inches and the area is four square inches. An inch and a quarter outlet will carry a lot less water than an inch and a half pipe is the point. While I wouldn't discourage you from meting code be sure it is what you need and want to do before getting into substantial demolition because the rewards aren't likely to be significant. ----- Original Message ----- From: Michael Baldwin To: [email protected] Sent: Wednesday, May 14, 2008 9:10 PM Subject: RE: [BlindHandyMan] Tub drain That is the plan, to make it all 2 inch to the main stack. that is what codes says I need to do, and that is what I should have done in the first place. I just didn't know if I could get the tub drain as 2 inch though, or if I had to use what is there which is 1 1/4 and then connect that to the 2 inch drain. Michael _____ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Bob Kennedy Sent: Wednesday, May 14, 2008 5:35 PM To: [email protected] Subject: Re: [BlindHandyMan] Tub drain You should be able to step up with little trouble. If you are going to 2 inch pipe I'd take out everything before that point so it's all the same size in the end. You'll appreciate the faster draining too. ----- Original Message ----- From: Michael Baldwin To: blindhandyman@ <mailto:blindhandyman%40yahoogroups.com> yahoogroups.com Sent: Wednesday, May 14, 2008 10:25 AM Subject: [BlindHandyMan] Tub drain Okay....when you have a shower, by code it needs to have a 2 inch drain. Well our tub/shower drain has the standard 1 1/4 drain, that goes to a 1 1/2 pipe. Does anyone know if I can get the tub drain in a 2 inch size, or do I just need to make due with the 1 1/4 and connect that with a 2 inch drain line. I originally plumbed it with the 1 1/2 cause I didn't know better, and now I do, and now I need to relocate the drain for my current project, which I will post on later. Thanks, Michael [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] ------------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.16/1432 - Release Date: 5/14/2008 7:49 AM [Non-text portions of this message have been removed]
