<div dir="ltr"><div><span style="color:rgb(0,0,0);font-family:"Helvetica Neue"">The 2021 IPC (Section 903) requires vents to terminate at the height specified by the AHJ (in fact the text of the document literally says "not less than [NUMBER] inches (mm) above the roof" which I believe in general is based on 6 inches above anticipated snow cover. </span><br></div><div><p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;line-height:normal;font-family:"Helvetica Neue";color:rgb(0,0,0)"><br></p><p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;line-height:normal;font-family:"Helvetica Neue";color:rgb(0,0,0)"><span style="font-family:Arial,Helvetica,sans-serif;color:rgb(34,34,34)">The 2021 IPC also specifically addresses things like PV modules over vents - </span>when the vent is covered, like by a PV module, and thus cannot be covered by snow, the vent can terminate 2 inches above a sloped roof. There must be an "open area for the pipe to the outdoors" not less than the I.D. of the pipe, and there must be means to prevent birds/rodents from entering/blocking the pipe.</p><p class="gmail-p1" style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;line-height:normal;font-family:"Helvetica Neue";color:rgb(0,0,0)"><br></p><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>Brian Mehalic <br>NABCEP Certified Solar PV Installation Professional\u2122 R031508-59</div><div>National Electrical CodeŽ CMP-4 Member</div><div>(520) 204-6639<br><div><br></div><div><div><div>Solar Energy International<br><a href="http://www.solarenergy.org" target="_blank">http://www.solarenergy.org</a></div></div></div></div><div><br></div><div>SEI Professional Services</div><div><a href="http://www.seisolarpros.com" target="_blank"><span style="font-size:12.8px">http://www.s</span>eisolarpros.com</a><br></div><div><br></div></div></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, May 13, 2022 at 9:53 AM Bruce Leininger via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Hello. I'm wondering if there is a code reference for the allowable clearance above a plumbing vent. I've run into several jurisdictions that ask for the clearance to be at least 2x the diameter of the vent pipe. I'm wondering if there are any code references to back this up or any code that specifically prohibits obstructions (like solar panels) above plumbing vents.</div><div><br></div><div>Thanks all!</div><div><br></div><div>Bruce<br></div></div>
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