Drain Pipe Perforations - Up or Down? | Eng-Tips
Dec 18, 2002 · Ron, with the pipe perferation up only the area above the pipe holes will drain into pipe, until the flow level is the gravel bed is to the top of the pipe. With the holes down the flow will fill the …
storm pipe minimum slope??? | Eng-Tips
Apr 5, 2007 · I'm pretty new to doing stormwater drainage plans. I recently was told that 0.5% slope for pipes only really drains when the pipe is a minimum length and using this slope doesn't work well for …
Drainage Pipe Through Footing | Eng-Tips
Dec 21, 2021 · Hello Everyone. The contractor on several of my projects would like a typical detail for a situation where a drainage pipe exits the crawlspace of a new residence through the footing. These …
Retaining wall drainage system | Eng-Tips
Sep 2, 2009 · That way, if one location gets squished or otherwise blocked, you have another route to take. Regarding "dirtguy's" post, sure wall backfill and connectivity between the soil and the drainage …
Gravity drainage pipe size question | Eng-Tips
Oct 3, 2010 · If the 6" pipe is 1.5 m long, straight and vertical it will be able to take about 275 m 3 /h before it floods. Most of the head losses are in the entrance to and exit from the 6" pipe, rather than …
Drain Pipe perforations orientation | Eng-Tips
Sep 3, 2004 · Conventional practice calls for placing retaining wall drain pipe with the perforations down. A contractor on one of my jobs was confused by the pipe he got that had perforations on opposite …
slope of soil pipes | Eng-Tips
Aug 26, 2010 · According to the recommendations of the code the minimum slope for horizontal soil drainage pipes is 1% for pipe diameters less than 8 inches. The maximum slope that is possible on …
Vacuum Pressure in Pipe Drainage | Eng-Tips
Apr 22, 2017 · Does anyone have any references for calculation of vacuum pressure in gravity pipe drainage. I have a piping system that flows throughout a facility. The piping is not straight and …
Question about pitch of underground drainage pipe | Eng-Tips
Apr 13, 2010 · I hired a contractor to fix some water issues in our backyard. We're on a hill and he went about 120 ft around two sides of our house with this drainage pipe. It's the perforated black piping, …
suitable cover for culvert pipe | Eng-Tips
May 23, 2006 · I am installing a culvert pipe to get across a subdivision drainage ditch. The subdivision has specified the culvert pipe diameter as 500mm. What type and how much cover should I put over …