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Recent content by ngneer

  1. ngneer

    suggested min/max slope for outdoor basketball court

    thanks and i too have witnessed contrasting info. of max 2% min 2%. also, arch graph. standards states that least favorable case is sloping to or from center for courts. the surface must be one true plane. i'll design with 1.25% to 1%.
  2. ngneer

    suggested min/max slope for outdoor basketball court

    anyone have experience with setting slopes for outdoor, asphalt paved playing surfaces? arch. graph standards recommends slope range of .83% - 1% for tennis courts, but typically parking lots have min. of 2% to prevent bird baths. is 2% too steep to play basketball? the court will slope...
  3. ngneer

    Practical Structural Practice Problems

    terrific question. although can't recommend exact texts, why not review fellow senior engineers work. most of my education in practical engineering situations has resulted from delving into previous reports by others. i particularly enjoy software analysis in comparison to moment distribution...
  4. ngneer

    Soil Liquefaction Potential at Single Family Residence Site

    investigate other structures in the vicinity to determine if similar situation exists. most likely soil exploration is required to characterize strata, test soil behaviour, and recommend foundation system.
  5. ngneer

    How To Build a Gabion

    check out maccaferri's website. gabions are labor intensive, but once familiar with tying procedures the schedule should hasten. design gabion wall as typical with any retaining wall, although advantages that no weep holes are required. also, if aesthetics are important, face rocks at...
  6. ngneer

    Surveying/Site Planning/Civil Design Software

    I thought sitecomp demo version was available for download. Nevertheless, it's difficult to get a feel for the program without training. Civil software is such a broad topic with many products, with most users a result from previous experience with a certain program. I have a friend that uses...
  7. ngneer

    Structural Analysis of Box Culvert

    I am reviewing the structural design of precast box culvert manufacturer and need some clarification. The culvert will be produced as "clam shell" sections (upper and lower halves) with shear key to prevent lateral movement. When analyzing as a frame using moment distribution, I am unsure...
  8. ngneer

    How do I find stream depth given flow rate ?

    without thinking about involved hyrdaulic step method analysis, couldn't you simply use manning's eq to solve for depth by plugging slope, roughness, and hyraulic radius in terms of depth. For ex. rect channel R = (Width x Uknown Depth) / (width + 2depth).
  9. ngneer

    Stability Calculations of Buttress Dams

    try army corps of engineers online manuals, bureau of reclamation texts, and other texts available for purchase or most likely w/in library of nearest engineering university library (ex. advanced dam design by jensen). i am currently designing concrete gravity dam and have relied on above...
  10. ngneer

    Rational Method Q vs TR-55 Q Results

    without investigating more, i noticed the units are different for each q. hopefully it's not that simple but thought before time is spent...
  11. ngneer

    Land Development Textbook

    land development handbook by dewberry and davis
  12. ngneer

    guardrail design

    formerlyltapjim, Not a new yorker, but close. I work in southeastern pa. I read a similar case during torts from washington state. The professor asked if any engineers were present, at which time I volunteered to submit to infamous socratic method. This attorney had been directly involved in...
  13. ngneer

    guardrail design

    not directly related to your question, but it this area of U.S. "guardrail" has been relpaced with "guiderail." In these litigious states, we cannot give the impression that these structures guard against the vehicle exiting the roadway. The rails only guide vehicles to remain on the pavement...
  14. ngneer

    Rational C for Residential Developments

    dicksewerat is right on with his comments. consultants many times fail to experience the actual results of their design work. although consultants may be more on the cutting edge, engineering takes a new twist when your design negatively impacts the citizens that rely on our work. I never...
  15. ngneer

    Rational C for Residential Developments

    I would also commend your questioning of the consultant's design. When a problem occurs down the road, the consultant will not be the one to receive the angry phone calls from residents and politicians. Furthermore, the cost in installing a larger diameter pipe during original construction is...
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