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mps1mps1
9th March 2008, 02:27 PM
G'Day All,
After a crawl under the house to find fuel for our next council cleanup I noticed 3 x 90 Deg. bends in the bathroom toilet waste pipe.Nothing else connects to this pipe until it branches into our second toilet waste pipe via a Y junction. No vent pipe found. As yet we have never had a problem but I'm sure I've read 90 deg bends should never be used for sewer pipes.
I (novice)have searched your fantastic forum site but failed to find Info.
Should I worry . <!--[if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"> <v:stroke joinstyle="miter"/> <v:formulas> <v:f eqn="if lineDrawn pixelLineWidth 0"/> <v:f eqn="sum @0 1 0"/> <v:f eqn="sum 0 0 @1"/> <v:f eqn="prod @2 1 2"/> <v:f eqn="prod @3 21600 pixelWidth"/> <v:f eqn="prod @3 21600 pixelHeight"/> <v:f eqn="sum @0 0 1"/> <v:f eqn="prod @6 1 2"/> <v:f eqn="prod @7 21600 pixelWidth"/> <v:f eqn="sum @8 21600 0"/> <v:f eqn="prod @7 21600 pixelHeight"/> <v:f eqn="sum @10 21600 0"/> </v:formulas> <v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"/> <o:lock v:ext="edit" aspectratio="t"/> </v:shapetype><v:shape id="_x0000_i1025" type="#_x0000_t75" alt="" style='12pt; 15.6pt'> <v:imagedata src="file:///C:\DOCUME~1\Greg\LOCALS~1\Temp\msohtml1\01\clip_image001.gif" o:href="http://www.woodworkforums.com/images/smilies/standard/confused.gif"/> </v:shape><![endif]--><!--[if !vml]-->:?<!--[endif]-->
mps1mps1

davo2310
9th March 2008, 03:58 PM
it doesnt need a vent if it runs less than 8.5metres from the main line, or less than 3 wc's.
90 bends can be used, I prefer to use 2 x 45's, as long as there is a good fall. It should have an inspection opening at or close to the first bend also.

mps1mps1
11th March 2008, 07:29 PM
Thanks Davo,
I'll sleep better tonite.:2tsup: