Hello all, Not sure if I am posting this is the right forum or not, so please let me know.
I have a site where we need to install an onlot sanitary system. We are going with a water well for service (non-potable) and an underground holding tank to be pumped on a regular basis for the...
I have modeled a pond with an overflow weir as the secondary outlet at the top of the pond elevation and a culvert discharge as the primary outlet, located at the base of the pond. The question I have is that when I look at the Hydrograph table, there is water flowing through the overflow weir...
Does anyone have any experience trying to estimate surface infiltration? Ultimately, I would like to be able to look at the infiltration rate and relate that number to runoff, but wanted to see what luck people have had doing this?
The main problem that I think I will run into is preventing...
Just a quick question. I want to model underground pipe storage (5, 10' diameter pipes, 100' long) and want to get the general consensus on how to input the data. The pipes will not be installed level and will instead be located within a hillside (approximately 15% slope). Currently, I have...
I have a large site (16 acres) that drains into a small pond (146,000 gal) with a 12" discharge outlet. I am trying to evaluate various options for increasing the time of concentration on the site in order to attempt to lower the peak flow rates. One option I am evaluating is installing some...
I am trying to model an infiltration trench with a perforated pipe embedded in the stone backfill. I am able to enter the below grade stone bed with the pipe embedded but this is where I am running into problems. Above grade, there is an embankment to allow the water to pool and then feed into...
Does anyone have any experience or know of a type of vegetation that grows no taller then 2' and will not require mowing? I have a site that I am developing and the neighbors are being permitted to have a say in the final site design and they have requested a low-growing grass (less then 2')...
I am modeling my basin as two separate lines on the storage tab since stormwater will flow into the first cell and then overflow into the second cell. There is not a controlled discharge from the first cell to the second, just a gabion overflow weir. The second cell has an overflow spillway...
Can anyone give me some direction for how to calculate the anticipated amount of sediment accumulation within a stormwater detention basin?
Looking for any advice! Thanks.
Can anyone offer some advice on how to model a sediment forebay and micropool within a detention basin? Do I set up the model so the forebay would be a separate pond flowing into the basin or maybe add it as an additional outlet? If I include the volume in the storage, is this all that needs...
I have a site that has a topographical high point in the center which drains into two separate drainage areas (wetland drainage ditches/swales). The drainage areas are paralel to each other and run straight through the site.
My question is, how detailed does the routing diagram need to be...
Hello,
I am attempting to model the limits of the 100-year floodplain for a creek site I am working on using the HEC-RAS software. I have very limited surface water hydrology experience so any help is appreciated. If there is another software tool that I should use, please let me know.
I was...
I have a project that is going to require the removal of a streambank to the base of the creek - what type of erosion controls have you used that may be applicable in this situation? The site is very constrianed with steep (greater then 1:1) slopes. I have been looking into placing...
I was wondering if anyone out there can lend me a little advice. I was recently promoted to a level 2 engineer but I feel the raise was less then deserved. I have been with my company for 2 years now and when I got my promotion, I was told that the raise also included my merit raise.
Long...
Okay,I have a site where we are taking the soil off site for thermal treatment. The problem is that the post treatment sample concentrations of nickel and vanadium have increased significantly and we can not figure out what the cause of the increas may be.
Has anyone seen this before or have...
I need to find a picture or diagram of a helical pier and tie back acnhor for a community open house - anyone have any pics or websites with good diagrams?
I am looking for some advice in regards to moving and the PE exam. I have been working for 2 years now with my FE license and I am now considering moving to Texas (I currently live in PA).
My main concern is my license. Should I stay in PA for another 2 years and get my PE here or should I...
I am in a situation now where my current company is doing really well and offering to pay for training courses and membership association fees. I feel I would be missing out on a great opportunity if I don't take advantage!
So my question is this:
What membership associations are worthwhile...
I am trying to put together an E&S Plan for the parking lot milling. We would like to keep the plan under one acre so we proposed to mill from the curbs to 20 feet out and around key-cut areas (driveways and drainage) and overlay the remainder of the lot.
However, I would like to...
