yourlocalhandsyman
New Member
Looking through the NPC 2020, it specifically states that short radius 90's cannot be used to connect 2 drainage pipes except in 2 very specific circumstances:
"90° Elbows
1) Except as permitted in Sentence (2), 90° elbows of NPS 4 or less whose centre-line radius is less than the NPS of the pipe shall not be used to join 2 sanitary drainage pipes.
2) For sanitary drainage systems of NPS 4 or less, 90° elbows described in Sentence (1) shall only be permitted a) to change the direction of piping from horizontal to vertical, in the direction of flow, b) where a trap arm enters a wall, or c) to connect trap arms as permitted by Sentence 2.5.6.3.(2)"
However, it says nothing about 45's and 22.5's. The issue is the local building centres in buttfuck nowhere literally don't carry medium/long sweeps, combos etc and take forever to get stuff in. Would an inspector pass using short radius/street short radius 45's going into wyes? Is there some place in the code I'm missing or is this just a sort of "best practices" rule?
"90° Elbows
1) Except as permitted in Sentence (2), 90° elbows of NPS 4 or less whose centre-line radius is less than the NPS of the pipe shall not be used to join 2 sanitary drainage pipes.
2) For sanitary drainage systems of NPS 4 or less, 90° elbows described in Sentence (1) shall only be permitted a) to change the direction of piping from horizontal to vertical, in the direction of flow, b) where a trap arm enters a wall, or c) to connect trap arms as permitted by Sentence 2.5.6.3.(2)"
However, it says nothing about 45's and 22.5's. The issue is the local building centres in buttfuck nowhere literally don't carry medium/long sweeps, combos etc and take forever to get stuff in. Would an inspector pass using short radius/street short radius 45's going into wyes? Is there some place in the code I'm missing or is this just a sort of "best practices" rule?
