storm pipe minimum slope??? - Storm/Flood engineering - Eng-Tips
2007年4月5日 · 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 …
Drain Pipe Perforations - Up or Down? 1 - Eng-Tips
2002年12月1日 · Infill is +10 to –20mm stone although contractor will ask soon to put in 20-40mm stone above the drainage pipe - availabiity of materials. Pipe will tap into a manhole at 75m …
Gravity drainage pipe size question 1 - Eng-Tips
2010年10月3日 · Take a typical 25m swimming pool with an overflow channel around the perimeter of the pool. Assumiing the flow into this channel is 200m3/hr. In the base of the …
Vacuum Pressure in Pipe Drainage - Pipelines, Piping and Fluid ...
2017年4月22日 · What is the purpose of this exercise. If you want the pressure for design purposes, assume 0 psia. Exterior pressures from soil or ocean water pressure make the …
Retaining wall drainage system 5 - Eng-Tips
2009年7月20日 · I laid perforated pipe wrapped in a mesh sock (to prevent clogging) on 3 or 4 inches of gravel and then wrapped all of this in landscape fabric at the base of each wall. (I …
pipe encasement - Structural engineering general discussion - Eng …
2006年3月14日 · A steel pipe sleeve is the best solution. However, since you can't do that, a properly designed reinforced slab over the pipe is probably next best. Encasing an HDPE pipe …
Invert elevation and Rim elevation 1 - Eng-Tips
2006年6月9日 · Invert of the pipes in and out is the elevation at the bottom of the inside pipe wall, not the bottom of the pipe. Invert of the structure (MH or inlet) is the bottom of the inside of the …
Requirement of Insulation on Drainage piping Due to ... - Eng-Tips
2012年3月6日 · The PVC pipe has some insulation value. So a smart engineer could calculate the pipe outside surface temperature at the location in question. If condensate starts out with …
Rocker Pipes - Are they needed? - Water treatment and distribution
2003年3月12日 · In UK it has always been standard practise to install rocker pipes on drains and sewers at the entrance and exit from manhole chambers. (Rocker pipes are short lengths of …
Pipe Surcharge - Storm/Flood engineering | Eng-Tips
2007年6月6日 · Typically inlet control means the pipe is not surcharged. However, as I attempted to say that pipes which flow under inlet control are probably on a steep slope with high energy. …