StevenT Posted January 22, 2009 Report Share Posted January 22, 2009 I came across this P trap today while inspecting a 220,000 SF (168 unit) apartment building. Imagine the size of thr dumps that it takes to clog it. [:-crazy] Actually, it's part of the storm drain system. Click to View 51.85 KB Quote Link to comment Share on other sites More sharing options...
energy star Posted January 22, 2009 Report Share Posted January 22, 2009 ca ching Quote Link to comment Share on other sites More sharing options...
Darren Posted January 22, 2009 Report Share Posted January 22, 2009 It looks like a whole house trap; is the sewer a combo (sanitary & storm)? Quote Link to comment Share on other sites More sharing options...
StevenT Posted January 22, 2009 Author Report Share Posted January 22, 2009 Just storm. Quote Link to comment Share on other sites More sharing options...
fqp25 Posted January 24, 2009 Report Share Posted January 24, 2009 Are those drain lines for roof drains? I have seen roof drain lines going into the combination sewer system in Chicago. They had a big cast iron catch basin, before the line left the building. Those catch basins (usually 36" deep) were always filled with gravel/pebbles from the roof. Frank Quote Link to comment Share on other sites More sharing options...
StevenT Posted January 24, 2009 Author Report Share Posted January 24, 2009 There are roof and patio drains. I built a system like you described in a laundromat. In NYC... in most cases storm drains are not allowed to drain into a sanitary sewer. It adds too much water to the sewerage treatment plants. If you don't have a storm sewer (new construction), you have to install dry wells. That is another scam story. Quote Link to comment Share on other sites More sharing options...
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