Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by Maury

  1. Maury

    Gravity Sanitary Sewer Pipe Type Help

    SDR-35 is to light for this application. I wouldn't go any thinner than SDR-21. Ductile Iron should also be considered. Include a proper bedding detail and enough inspection to make sure the installation is correct. With 30' of cover and railroad sidings on top, any failure or deformation...
  2. Maury

    Wet Well Bouyancy

    I don't use the sliding resistance of the soil for two reasons: 1. The worst case may occur during construction, before there is any backfill. 2. I practice in an area with clay soils that in dry weather may shrink and pull away fron the walls, reducing the friction. Some additional concrete...
  3. Maury

    Acceleration and Deceleration Lanes

    I see no need for an acceleration lane. Traffic from the side road will wait for a gap in traffic before entering. The deceleration lane or right turn only lane is a good idea.
  4. Maury

    gravity connection to force main

    Your last statement and question: "I figure that when pump is not on gravity flow will push as a siphon into manhole. When the pump comes on what will happen...Will it pull with a vacume?" The pump will not pull a vacuum, it will cause a back pressure on the check valve until the valve fails...
  5. Maury

    Civil Engineering Ethics

    My company went through a similar situation when working as City Engineer. We were regularly requested to provide copies of documents that the City already had. A phone call to us was less work (for them) then going to their files and locating what they needed. This continued for a while...
  6. Maury

    Calculation submissions

    I have done a lot of subdivision design, and we are usually required to submit calculations for the storm sewer and storm water detention design. These calculations are almost always reviewed in detail by the city engineering staff.
  7. Maury

    Prints online for biddings

    I work for a private consultant that does many municipal projects. We have encountered companies that have copied our plans and specs on projects that are out for bid and have made them available online. We've had to contact these companies and tell them to stop reproducing our copyrighted...
  8. Maury

    Illicit discharge tracing problem

    You could try electronically tracing the pipe to find out where it originates. I am surprised that there isn't some indication of the excavation that would have been done to install the pipe. Some possibilites for a source that wouldn't show up immediately with dye testing: sump pump for...
  9. Maury

    DROP MANHOLES

    I require that the drop be outside the manhole and that it be encased in concrete.
  10. Maury

    Storm Sewer Grate Intake Capacity

    Neenah Foundry Co. has done actual tests on their grates, both in curb flow and ponding. You should be able to access this data from their web site and select a grate that is similar to the one your ae evaluating.
  11. Maury

    Taffic Control Patterns

    You describe this as a main highway, which suggests that it is owned by the Virginia DOT. Since you are going to need a DOT permit for the work, go to them to discuss the project ASAP. They will tell you how they want traffic control to be done and will probably have standard details to use.
  12. Maury

    Construction Project Manager: PE, MS-CE, MLS?

    Regarding Option 3 (Surveyor. I don't know where you live, but all of states that I have knowledge of require a substantial amount of experience working with a licensed surveyor before you would be eligible to take the licensing exam. You should check into this before you make your choice...
  13. Maury

    Minimum Temperature to Pave with Asphalt

    Illinois DOT says 40 deg and the forecast is for rising temperatures for binder course, 45 deg and rising for surface course.
  14. Maury

    curve data

    Delta#1 = 90d47m55s Delta#2 = 121d46m10s These are the differences between the end angle and the start angle, which are the bearings of the tangents. T = tangent lengths of the curves. These lengths are sometimes needed for staking but probably aren't necessary fot the small curves described...
  15. Maury

    Existing Flat Sewer

    The existing 4" is to small even for a service. It should be at least 6" diameter. The slope of 0.10% is much to flat. The usual design is a flow velocity of 2 fps for the pipe flowing full. I don't understand how this would have been permitted I would suggest replacing all of the sewer with...
See more

Part and Inventory Search

Back
Top