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  1. martin888888

    Survey Scope Of Work

    Yes, potholing is always subcontracted out and not part of the survey scope, I misstated it in my original comments. However a surveyors job is to research parcel maps and asbuilt information along with picking up utility structures (IE. Manholes) in order to create a base map that is accurate...
  2. martin888888

    Survey Scope Of Work

    I agree MotorCity, the asbuilts are simply supplemental information to help them get an understanding of what might be out there. By no mean held to a level of accuracy and I think most surveyors understand that. He also asked us to bring control into the site for him - Kidding. Yea, I will...
  3. martin888888

    Survey Scope Of Work

    Hello, I just got a general question from an issue we just went through and am interested to hear feedback on this. I have done work in at least 20 states and 5 countries in my career and have never seen this happen before. We scoped for a surveyor to do a topographic survey, including...
  4. martin888888

    Above Ground Stormwater Piping

    Great points, thank you guys. The main issue here however is if the HDPE pipe flows full will it put it in a vacuum situation that could possibly cause cavitation of the pipe.
  5. martin888888

    Above Ground Stormwater Piping

    Thanks pennpiper. Its located in Iowa and we have anchor details and parameters for protection. Main issue we are working through is effect of air lock on the system. Which I believe has no effect.
  6. martin888888

    Above Ground Stormwater Piping

    Thanks for the response. The initial 4.5% pipe will not have capacity for our design flows and will flow full under large (25yr) storm events. As you said the steeper pipes have plenty of capacity. I guess there is concern that the condition of not having air in the pipeline will cause issues.
  7. martin888888

    Above Ground Stormwater Piping

    Hello, We are proposing 600' of fused HDPE (SDR 17) pipe that will be placed above ground for storm water conveyance. Due to ground conditions a bury is not possible. From the inlet we are looking at a initial 200' run of pipe at a 4% slope, with a slope of 11% to 15% in the remainder of the...
  8. martin888888

    Limestone Rock Outfall

    No this is strictly lateral flow through porous media. Even 35 year experts at our company are getting stumped by this.
  9. martin888888

    Limestone Rock Outfall

    We have a situation where we are designing an underground (roadway on top of it) limestone rock outfall (150'L x 20'W x 4'D) that will transfer water from a pond for treatment. At the end of the rock outfall we will have a culvert to discharge flows downstream. The culvert is easy enough to...
  10. martin888888

    Underground Limestone Rock With Pipe Outfall

    We have a situation at a mine site where we are designing a underground (roadway on top of it) limestone rock outfall (150'L x 20'W x 4'D) that will transfer water from a pond for treatment. At the end of the rock outfall we will have a culvert to discharge flows downstream. Easy enough to...
  11. martin888888

    Orifice plate on large culverts

    thanks. The 2 large culverts are feeding a 16ac pond however. 1/2" steel orifice plate or concrete wall type structure with slot cut will probably do it.
  12. martin888888

    Orifice plate on large culverts

    I have an existing 84" culvert that I need to install an orifice plate on to control flows. Has anyone ever constructed anything like this before? Would an orifice plate of this size tend to warp under water pressures over time?
  13. martin888888

    Culvert Headwater Calculations

    When calculating headwater of a culvert does the size upstream basin within the roadside ditch come into play? As an example, if you have 5cfs of flow into 12" culvert and you calculate that the headwater would be 1ft above the crown of pipe. Would this 1ft calculation differ if you have a 10%...
  14. martin888888

    Concrete Pavement Joints

    Hello, I am designing a running track as a volunteer for an elementary school. 1/8 mile oval track with a 12' wide concrete running surface (will be overlay with a poly surface down the line). The section for the track I used is a 4" thick concrete section with rebar. Would calling out...
  15. martin888888

    Asphalt Pavement Design

    Hello, Would anyone know of a good program to help with design of an asphalt pavement section for a commercial driveway? I have heard that AASHTO has one but cant seem to find it. What I am trying to do is verify a 4"/10" section that was put on a set of plans with truck traffic and subgrade...
  16. martin888888

    Concrete Overlay

    Thanks, that is my main question regarding bonding agents.
  17. martin888888

    Concrete Overlay

    We have a small (150ft) length of roadway that is being used as a wet crossing. It is a 12" culvert will the 150ft length of concrete driveway pured over top of it. We want to raise this roadway max 2' and install 2-15" culverts. Before concrete is poured on old concrete is a bonding agent...
  18. martin888888

    Swale Maximum Velocity at Outlet

    Creek restoration project on the downstream 1000' where we are widening the channel and placing rip rap. Velocity in channel gets as high as 11-12fps. Install energy disipation measures at confluence with major waterway. Energy disipation includes wideing channel, placing larger rip rap, and...
  19. martin888888

    Athletic Field Design

    Thank you. Appreciate that.
  20. martin888888

    Athletic Field Design

    im a civil engineer specializing in land development and took on a task as a volunteer to design a running track and softball field for my daughters elementary school. Space is limited so a normal 400M (1/4 mile) track will not fit in the land available. This is fine as its an elementary...

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