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I am examining an existing storm conveyance system that is flooding at a combination curb inlet/grate. My calculations show that the pipes are undersized. However, the owner thinks that the inlet may be undersized since he saw a swirling, vortex there during a storm. My question: is it possible...

Correction "to serve a prison system"

I am designing a sewer trunk line to serve a sewer system. The prison will have 3000 beds. Any idea on what peak rate factor to use for this?

I have always heard that SCS method's upper limit is 2000 acres. 50 square miles is greater than 30,000 acres. I would suggest looking at regression equations developed for your area.

Our office is within one hour of a large military installation. I would like to pursue some design work there - any idea how one gets started?

initial pricing on grinder station - 12000. This was also confirmed with another company. Step system - around 6000

A pump salesman has suggested a STEP type system. Septic tank to catch solids with effluent pump in a pump tank. Owner likes this idea since he is a short term owner and will not have to pay tank pump out costs.

I am designing a conv. store. We need to pump the sewage. We need 20 gpm at 30' of head. Due to low flows we need to use a 2" pipe which dictates the use of a grinder pump station. Preliminary cost estimate for a pre-packaged Flyght system is around 25K. Do I have any alternatives? this seems to...

there are no requirements. very vague. we are just supposed to do it. so it really is up to us. i just want to do it right. It seems as if the permanent pool if made large enough can treat portions of the storm by displacement. (ie the treated water is displaced during a storm leaving the new...

I have been designing traditional detention ponds for years but am new to the water quality aspects of it. I understand that I must provide a water quality volume. Can I count the permanent pool as part of the water quality volume? Or at least a portion?

This is a community well for 58 houses.

If I dont put a valve in how will I service the meter or check valve without draining the tank.

I am designing a well house. I will be pumping from a well to a pressure tank. I will have a check valve and a meter. Any reason to have a gate valve too? I am considering one downstream of check valve and meter and upstream of pressure tank. That way I could isolate meter from tank in order to...

Hydrasolve is the best in my book for being user friendly and creating great reports.

Dick Sewer Rat The site is 15 miles from nearest city sewer manhole. STEP systems are used extensively around Mobile Alabama. We went on a tour there last year (sponsored by Orenco for full disclosure). If a private utility owns the system then they will pump the tanks, replace pumps etc. STEG...

I recommend a software program to size the water mains. WE use watercad by Haestad and are happy with it. If it is a non-looped branch line you can use the hazen williams formula and do it by hand. You may could do a single loop without too much trouble. anything more complicated and you need a...

I need to run a 4" pvc line under an existing roadway. Is it necessary to jack and bore or is there some type of freebore that we could use? Thanks.

I am designing a STEG (Septic Tank Effluent Gravity) collection system for a 10 house development. The house will discharge to a septic tank, solids will then settle out. Effluent will then gravity flow to a pump station. A couple of questions: First, how should I size the pipe? Second what is...

I am making the transition from a land development business to one that provides engineering services to municipalities (sewer, water, etc.) It seems as if most cities already have a relationship with a firm - usually they have been with that firm for several years. This business is proving...

Rye1 Your website looks good. Check your spelling though. "Loose vs. lose" Good luck.