Completely buried tanks? Completely buried tanks are no longer acceptable if this is potable water. Refer to the ten states standards.
The problem is that one can't tell if the tank is leaking if it is buried.
I don't think the plumbing code official will allow what you have proposed. You should be using long sweep elbows joined by a short length of pipe. Refer to the ICC:
https://codes.iccsafe.org/s/IPC2015_NY/chapter-7-sanitary-drainage/IPC2015-Ch07-Sec708.1.4
Where I am located the State DOT has this regulation:
"Utilities should not be permitted to cross under highways in cattle passes, culverts, or other drainage facilities."
It is hard to respond to your post with the little information that you have provided. The area that you are working, residential and small commercial is very competitive and isn't an area that will support high margins.
Have you done a profit analysis of your work? Make a spreadsheet with the...
Look on this website to determine what you have:
https://www.plasticpipe.org/PPI-Home/Municipal_Industrial/Publications/Download-HDPE-Handbook-Chapters.aspx
It may be an easier process to install your piping using HDD instead of the culvert option. 450' of HDD is a run of the mill project, nothing special.
You haven't presented a site plan nor a geotechnical analysis, nor location. Are you concerned with the possibility of freezing?
The culvert...
What are you running, a gravity sewer or a force main?
What is pneumatic tunnel boring?
Why do you state that HDD is expensive? You can construct this within a week?
Never have seen something like this used for the application that you describing. Polystyrene seems to be so light that one would never be able to keep it in place. Is there a particular material that you are looking into?
That's why you should have a good project manager. It's not like you are going to wake up like Rip Van Winkel 2 or 3 years later and find that you an insurmountable problem.
You should be having regular project meetings and documenting the meetings. Your client should be reviewing your work as...
As a rule of thumb, the soil is generally able to support loadings of approximately 1,500 lbs per square feet. You would want the supports to have enough area to spread out the loading so that number is not exceeded.
There have been many instances of stages collapsing. For that reason, and with...
There is also a well known phrase regarding the legal system.
“Don't tell me what the law is, tell me who the judge is.” The relevance of that quote lingers for a reason. I am amazed that people assume that judges know what the law is. Judges don't go to school to study in depth what is...
Generally, there are only 2 or 3 contract conditions that shouldn't be accepted.
You never want to accept "liquated damages" or "time is of the essence" obligations. Both of those contract obligations may put you out of business or end of costing you big money.
IMHO I think you are splitting hairs.
You don't mention whether this is a $50,000 or $50,000,000 Contract. In general, if you are comfortable with the scope of work, the Contract is a minor formality and it isn't worth the time and effort to go back and forth discussing it. Having said that...
It will be less expensive to have a central treatment plant instead of multiple treatment plants. The central treatment plant will also keep the transmission piping clean as well.
The water supply system should consist of a well screen type intake in the impoundment, either an ultrafilter or...
There are some that believe angular crushed rock will compact tightly and limit drainage. The important thing is that the aggregate is washed to remove the fines.
Other places don't prohibit angular materials.
Link
Link
A few observations:
The force main should have a minimum continously operating flow rate of 2 ft/sec to avoid solids deposition.
If you operate the force main intermittently, the flow rate when the pump starts should initially be 3.5 ft/sec to resuspend the solids that settle out when the flow...
It would help if you would provide some more details. Where are you discharging?
For the small application, you will probably be looking at an Orenco unit:
Orenco
For the larger unit, you would be looking at a Pollution Control Systems:
Pollution Control Systems
The recommendation is...
The Bureau of Reclamation has designed several of these for some of the dams near you. Doesn't appear they have anti-vortex protection. Maybe you can visit one?
"The Glory Hole"
The video states that the shaft makes a hard 900 turn at the bottom.
