Scottpat Posted January 25, 2013 Report Share Posted January 25, 2013 This was a first for me. The main line was on the ground and covered with the moisture barrier. When I first went in the crawl it took me a few moments to realize that I could not see the PVC waste lines that are normally suspended from the joist. Click to Enlarge 53.33 KB Click to Enlarge 61.57 KB Quote Link to comment Share on other sites More sharing options...
John Kogel Posted January 26, 2013 Report Share Posted January 26, 2013 At least it is well supported. Those puddles look like a washing machine drain might have been leaking. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted January 26, 2013 Report Share Posted January 26, 2013 The horizontal sections should be restrained against upward movement. Quote Link to comment Share on other sites More sharing options...
kurt Posted January 26, 2013 Report Share Posted January 26, 2013 Standard practice in Chicago, no upward movement restraining necessary (Chicago, anyway). In any sort of mildly compacted soil condition, it's fine for 100+ years. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted January 26, 2013 Report Share Posted January 26, 2013 Standard practice in Chicago, no upward movement restraining necessary (Chicago, anyway). In any sort of mildly compacted soil condition, it's fine for 100+ years. Plastic or cast iron? Quote Link to comment Share on other sites More sharing options...
kurt Posted January 26, 2013 Report Share Posted January 26, 2013 Iron. Can't use plastic underground in Chicago. Local 130. You know, I never thought about uplift with plastic...I never see it. Is uplift restraint required with plastic? Quote Link to comment Share on other sites More sharing options...
Scottpat Posted January 27, 2013 Author Report Share Posted January 27, 2013 No soil, crushed limestone fill of about two feet. We always see them suspended due to the unevenness of the land. I just do not see how they can get a proper slope when it is on the ground. Quote Link to comment Share on other sites More sharing options...
Jim Baird Posted January 27, 2013 Report Share Posted January 27, 2013 I have seen HVAC condensate lines dropped like that to traverse crawl and turn up to exit lower in elevation than entry point. I guess they call that the condensate trap. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted January 27, 2013 Report Share Posted January 27, 2013 Iron. Can't use plastic underground in Chicago. Local 130. You know, I never thought about uplift with plastic...I never see it. Is uplift restraint required with plastic? As far as I know, uplift isn't a problem with cast iron or galvanized steel. At least I've never seen it cause a problem. Plastic DWV is supposed to be restrained. Sometimes it arrives on the jobsite with a bit of a curve in it, like a keel on a boat. Even if it's straight when it's installed, it can lever up afterward, as other pipes are fitted to it. And sometimes, it bounces up & down when a big slug of water runs through it. Quote Link to comment Share on other sites More sharing options...
Tom Raymond Posted January 28, 2013 Report Share Posted January 28, 2013 No soil, crushed limestone fill of about two feet. We always see them suspended due to the unevenness of the land. I just do not see how they can get a proper slope when it is on the ground. Why would anyone fill a 6' deep walker with 2' of stone and make it into a crawl? It would have been cheaper to place a slab. Quote Link to comment Share on other sites More sharing options...
Scottpat Posted January 28, 2013 Author Report Share Posted January 28, 2013 No soil, crushed limestone fill of about two feet. We always see them suspended due to the unevenness of the land. I just do not see how they can get a proper slope when it is on the ground. Why would anyone fill a 6' deep walker with 2' of stone and make it into a crawl? It would have been cheaper to place a slab. This was a hands and knees crawls, not a walker.... Stone is cheap in our area, we have more rock than dirt! I must admit that the stone does not make for a comfortable crawl but it sure does help to make for dry crawl most of the time. Quote Link to comment Share on other sites More sharing options...
hausdok Posted January 28, 2013 Report Share Posted January 28, 2013 No soil, crushed limestone fill of about two feet. We always see them suspended due to the unevenness of the land. I just do not see how they can get a proper slope when it is on the ground. Why would anyone fill a 6' deep walker with 2' of stone and make it into a crawl? It would have been cheaper to place a slab. This was a hands and knees crawls, not a walker.... Stone is cheap in our area, we have more rock than dirt! I must admit that the stone does not make for a comfortable crawl but it sure does help to make for dry crawl most of the time. Yeah, That's what some of the high-end builders do around here in wet areas. They'll sink a deep foundation, figure out where the high water line will be and then they fill to at least a foot above that line with stone; course stuff topped with a layer of pea gravel. Very comfortable to crawl around on. Nice flat crawl. Dry as a bone...until you dig down deep into that stone and find the water. Works great as long as the barrier is correct. When it's not correct it's like having a big humidifier plugged in under the house. ONE TEAM - ONE FIGHT!!! Mike Quote Link to comment Share on other sites More sharing options...
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