Which 90 elbow for lavatory trap arm (horizontal)

[Caryncbreeef]

Hello folks, after a four year project I am literally putting in last two sinks for the vanity, - some flooring and trim and house is done. Many. Thanks to you guys here for amazing guidance As I replumbed entire house and passed rough first go thanks to your help.

here is my simple question. To reach the sanitary tee with trap arm from sink without cutting apart the vanity i need a 90 elbow. It will be horizontal run. Trap arm will terminate at 90. Then piped horizontally to sanitee.

do I use long sweep or standard 90. That is my question ? By IPC code 90 degree is max unless pipe is 3” or bigger than 135 degree, so I understand the 90 is fine but haven’t found clear answer about which 90. Pipe is 2”

thanks

 

[wwhitney]

See NC's IPC Table 706.3, in particular footnote e. I'm pretty sure that NC amended the IPC here.

Chapter 7 Sanitary Drainage: Sanitary Drainage, North Carolina Plumbing Code 2018 | UpCodes

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Cheers, Wayne

P.S. As to the difference between "quarter bend" and "short sweep" I've never been clear. In plastic I've always just called them vent 90, quarter bend, and long turn 90.

 

[Sponsor]

 

[Caryncbreeef]

See NC's IPC Table 706.3, in particular footnote e. I'm pretty sure that NC amended the IPC here.

Chapter 7 Sanitary Drainage: Sanitary Drainage, North Carolina Plumbing Code 2018 | UpCodes

UpCodes offers a consolidated resource of construction and building code grouped by jurisdiction

up.codes

Cheers, Wayne

P.S. As to the difference between "quarter bend" and "short sweep" I've never been clear. In plastic I've always just called them vent 90, quarter bend, and long turn 90.

Thanks for that Wayne. So for 2” and smaller h to h it seems I can use anything but a sani tee which i wouldnt use anyway!

 

[Jeff H Young]

Cheers, Wayne

P.S. As to the difference between "quarter bend" and "short sweep" I've never been clear. In plastic I've always just called them vent 90, quarter bend, and long turn 90.

In cast iron a short sweep is often used Equivalent of plastic "Long sweeps" A cast iron long sweep is huge Ive used short sweeps on thier side many times never had issue or verticaly 37 years in trade I never quite caught on to why I never used cast iron long sweeps except when they were on job by accident Its good to have that much sweep but never saw them as nessesary