I'm routing a detention basin using PondPack and would like to be able to limit the end time of the hydrographs. I tried editing the end time in the hydrograph manager but the changes I make there have not been carrying over to my final results report.
My output shows a hydrograph extending to...
Are there any resources available to give a rough estimate of the water demand based on the building use and the floor area? I don't want to go into too much detail with the number of employees or the number of fixtures. For example I have a 15,000 SF pharmacy and a 5,000 SF restaurant and I'm...
Does anyone have any experience with the requirements for a lane transition/offset taper?
I have located the formula in Chapter 6 of the MUTCD which notes that you can use the L/2 for a transition taper where L is the taper length for a merging taper.
I have been told that the L/2 is only...
We have a situation where we need to fill a void on top of a garage slab that has already been poured with a ligth weight material that has sufficient strength to act as a road base. It has been suggested that we use a styrofoam product like Foamular from Owens Corning. We plan on providing a...
Where can I find typical CBR values for Lightweight aggregate? We would like to use a LWA for a road subbase but can not find documentation of the CBR values for any of the products that we have evaluated.
I am a civil engineer working on a residential wood frame multi-family development. I inherited this project from an associate that is no longer with our firm so I don't know all of the history. It has come up during building permit review that there is an issue with the building being on the...
I'm trying to find a table providing preliminary estimates for sanitary sewer fixture counts. Ideally it would include single family homes (possibly with a range of square footage or bathrooms)and apartments (w/ range of 1,2 efficiencies). Does anyone know where I can find a table of this sort...
I'm trying to find a table providing preliminary estimates for sanitary sewer fixture counts. Ideally it would include single family homes (possibly with a range of square footage)and apartments (w/ range of 1,2 efficiencies). Does anyone know where I can find a table of this sort? I am...
I'm trying to find a table providing preliminary estimates for sanitary sewer fixture counts. Ideally it would include single family homes (possibly with a range of square footage)and apartments (w/ range of 1,2 efficiencies). Does anyone know where I can find a table of this sort? I am...
I am reviewing a site plan for code compliance in regards to hand rails on retaining walls for pedestrian safety. I found a BOCA Code 1825.5 that requires a handrail/guardrail if your retaining wall is over 4' tall and a pedestrian path is closer than 2'. I'm suprised that you could have a 15'...
I'm looking for a detail of 48" ID manhole with an eccentric opening. I need this to be a cast in place structure and I need the eccentricity to occur near the bottom of the manhole. I need the taper to occur in order to avoid an existing utility. I would like to taper to a 24" opening at the...
When you are developing a site with existing impervious greater than 50% LEED credit 6.1 requires that you implement a stormwater management plan that results in a 25% decrease in rate and quantity of stormwater runoff. I understand the concept. My question is this. What storm event are they...
Are there any references that give generally acceptable values of time of concentration for urban watersheds that I could use as an assumption? I am developing a floodplain study for ultimate the ultimate land use. My drainage subbasins vary from 80 acres to 400 acres. Since I don't know the...
