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  1. RHOeng

    Printer/Plotter Recommendation

    I need a low volume Printer/Plotter, probably toner instead of ink. Either black and white, with good gray tones, or color. Needs to print up to 12"x18". Looking for some recommendations.
  2. RHOeng

    Microstation V8 and Windows 7

    I'm using Microstation 2004, V8: 8.05.01.25 and need a new computer. The new one comes with Windows 7 OS. Does anyone know if my version of MicroStation will run in Windows 7?
  3. RHOeng

    Contour Program

    Microstation 2004 V8: I do commercial site work. Property topo survey is furnished to me including 3d contour lines at 1' intervals, break lines, spot elevations and a tin file. Maybe 3 or 4 times a year I need to recontour a small area at .25 or even .1 intervals. Does anyone know of a...
  4. RHOeng

    How to import HecRas schematic basin back into MicroStation 2004

    I used MicroStation 2004 to generate cross section data into HecRas. In HecRas I modified some of the cross section stations. Now I would like to export the schematic from HecRas and import it into MicroStation 2004. I've searched MicroStation help and HecRas help and also Googled it but...
  5. RHOeng

    Z value

    Put a fence around all elements and use fence/scale. Set x=1, y=1, z=0.000001 That will place them almost at zero. or Save to 2d file then reference to 3d file and copy into 3d file. If you don't need 3d, leave it as 2d.
  6. RHOeng

    Upgrading MicroStation version licenses

    This is a little different from most posts. Recently we contacted Bentley and requested a quote to join their Select Services. Since, because of the economy, we've had to lay off some drafters we didn't want to place all of our licenses in Select, only the ones we were using. Bentley came...
  7. RHOeng

    Water Distribution Plan & Profile

    What is everyone's thoughts on what information should go in the plan view and what should go in the profile. I'm talking about calling out bends, tapping valves, fire hydrants, joint restraint, concrete anchors,etc. I've always put in the plan view what was visible in the plan view and put in...
  8. RHOeng

    Maximum depth of sheet drainage for parking lot

    Thanks blueoak for the comment. Flat surfaces and plastic soils aren't a problem when you deal with them on a daily basis. Just like asphalt airport ramps which are very flat aren't a problem with plastic soils when you take care of the expansiveness. I've done some large asphalt parking lots...
  9. RHOeng

    Maximum depth of sheet drainage for parking lot

    Thanks saruman26 for the idea. Slotted drain works well. I used it for the first time in the late 1970s at a hospital, have used a couple hundred feet at this school site and am using a small amount for the next school building. I've also proposed 10,000 feet for a future highway project...
  10. RHOeng

    Maximum depth of sheet drainage for parking lot

    Permeable pavement doesn't work too good in Oklahoma. Most of our soil is highly plastic clay, PI in 35-70 range, and has very little permeability. If you use that type pavement then you have the expense of an underdrain system to collect the water after it penetrates the pavement. Also, we...
  11. RHOeng

    Maximum depth of sheet drainage for parking lot

    Thanks guys and/or ladies. I had assumed 1/2" to 3/4" for the 50 year and I think I'll go with that. It'll be a little deeper for the 100 year, which we seem to get here (Oklahoma) frequently when there's hurricanes in the gulf.
  12. RHOeng

    Maximum depth of sheet drainage for parking lot

    OK. Maybe I wasn't specific enough. The question wasn't about the adequacy of a 2% gradient. That was put in there in case you wanted to calculate the flow depth for various storms or to come up with an inlet spacing. The question wasn't about a detention pond on the parking lot or even...
  13. RHOeng

    Maximum depth of sheet drainage for parking lot

    Local codes not withstanding, what is everyone's consensus as to the maximum desirable depth of sheet drainage in a parking lot before putting in an area inlet or island with curb inlet to intercept it? The lot in question is a 500 car high school parking lot, about 5 acres. The existing site...
  14. RHOeng

    Parking lot safety study

    I'm looking for information on studies comparing the safety differences between perpendicular and angle parking.
  15. RHOeng

    Children's Safety Village

    I have a project to design a children's safety village. It is like a miniature town. The village has 6' driving lanes, signage is miniature MUTCD, has working traffic signals and railroad crossing signals and arm. The children are instructed with audio visual aids and then they are placed in...
  16. RHOeng

    Building over geothermal wells

    Has anyone had any experience with building paved streets, parking lots, or very small storage buildings, 10'x10', over geothermal wells? Is there any structure at the surface of the well, if not, how much cover should there be to the top of the pipe?
  17. RHOeng

    sewage flow rate for 7000 population military dorm complex

    Can anyone tell me where to find sewage flow rates for a 12 dormitory military complex with 7000 population? Peak flow, average, etc. I assume peak would be when everyone rises at the same time and flushes and showers. I also assume this population is way beyond modeling with fixture units...
  18. RHOeng

    Cleanouts in Underdrains

    What is everyone's thoughts on putting cleanouts in perforated pipe underdrains, some call french drains, behind retaining walls, building foundations, basement walls, underground garage walls, etc. where the walls turn 90 degree corners? Seems like it would be a good idea so they could be...
  19. RHOeng

    Water line under pavement

    I was taught that water lines should not be placed under street pavement, parallel to the curb as they will leak and you have to tear up the pavement to repair them. I always put them between the curb and the sidewalk, or the sidewalk and the right-of-way line if the sidewalk was against the...
  20. RHOeng

    Hec-1 Utilization of SCS Methodology

    Thanks to everyone. I had 3 people send me direct email. SCS is limited in HEC-1 and HEC-HMS because of the formula that was used. They coded in a constant of 484 which is for moderate slopes 2-7 percent. In reality this hydrograph shape factor evidently varies from 300 to 600.

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