The only times I've heard of raw sewage backing up into houses/basements is when sewer lines are getting more water into the system than can be handled by the lift stations. This typically happens to areas that are designed to be 100% sanitary sewers but there is an inflow/infiltration problem...
Unfortunately, your attachment doesn't clearly show the pond. Based off the information, I was able to look at it through Google Maps & Street View. It looks like there is a very small triangular pond in the corner of the property behind the dentist office. Could this pond be extended to run...
I would ask your PM why they want you to adjust your calculations. Before you do, you might run the model adjusting for doing the areas as a whole with the different runoff coefficients. If the best case won't get the results your PM wants, there is no point in spending a lot of time to go...
This sounds like what the IT Department should be handling. Based on what I see at AutoDesk's forums, this sounds legit: https://forums.autodesk.com/t5/installation-licensing/request-from-bsa-the-software-alliance/td-p/13204271
LOTE, do your clients know this is your policy before they sign the contract since they aren't getting the CAD files that match the work you performed? It sounds to me like they're not actually getting a CAD file for the work. It sounds like they'd be better to get a PDF with the embedded...
When I've seen shell thickness measurements, they normally will do one per cardinal direction (i.e., N, S, E & W) per elevation @ multiple elevations. Additional testing may be performed at areas where there may be damage/deterioration or where they want more details (e.g., individual welds).
Looking at the formulae and the results, it appears that the reason for the error is that you're getting a negative pressure for the equations: Maximum Pressure per F.4.2 Equation 1 and Maximum Pressure per F.4.2 Equation 2. In both of these equations you're subtracting RMW which has a value...
Please refrain from posting in multiple locations. This question was posted in 3 forums: Ag forum https://www.eng-tips.com/viewthread.cfm?qid=522558, Soil/groundwater https://www.eng-tips.com/viewthread.cfm?qid=522560, and here. I wouldn't of said anything if it was only 2 since the Ag forum...
You probably should contact your local soil conservation services as they may be able to help you a lot with this or the NRCS. The NRCS may be able to assist with the design.
1. Your 6" pipe will be able to drain more liquid than a 4" pipe.
2. I think it's typically 300' apart, but it will be...
Those are 3 different mixes. If you are wanting to evaluate differences between water to cement ratios, the only thing that should be varying is the amount of water and cement. The amount of aggregate should remain constant.
Is this it? https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.issmge.org/uploads/publications/1/30/2001_01_0018.pdf&ved=2ahUKEwjI9q7ZnuiHAxW2kIkEHVL0CQQQFnoECCUQAQ&usg=AOvVaw3HkOutcLJNrrYV-LndaBgh
You need to consider all of the failure modes, as the slope failure may occur in the waste itself. It doesn't do you any good to have a liner (cap or bottom) that is stable if the underlying material (soil for bottom liner, waste for cap) if the failure mechanism will occur in the materials you...
I don't think you have enough data to calculate the 2yr-24 hour storm. You have only 11 hours worth of data and you're trying to predict the amount of rain for a 24 hour period that will occur 50% during any storm event. Your data indicated 2" of rain in 11 hours, but who knows how that...
Have you considered doubled-walled tanks? This wouldn't address any issues of secondary containment for ancillary equipment, but may be the best solution for the tanks themselves.
Here's a few PE rules that I think prevent you from working until you have a PE that's in charge at your workplace:
58-22-305 Exemption from licensure allows the non-engineers to do engineering work, provided they're working under a PE.
58-22-603 Seal -- Authorized use. Item (1)(b) allows the...
I would go to Utah's website to get the information: https://dopl.utah.gov/engineering/
Looking at the rules 58-22, it appears that without a PE, the firm you work at cannot perform any engineering services, nor could you partially perform the work for another PE to sign since they do not have...
No, I had to do a Google search of rhgeotech and geomembrane to find their website: https://rhgeotech.com/
It looks like they go by the name of SINOCURE GEOSYNTHETICS based on the website.
