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  1. CPENG78

    Federal Fire Protection (U.S.)

    Hi Everyone, I'm working on a national park project in California. Its open space. In reviewing its location, the areas around it are designated as high fire hazard zone but my project site itself is designated as federal fire hazard responsibility. My question for those of you that have...
  2. CPENG78

    Sewer Flow Rates

    Hi Everyone, I received a sewer flow rate in DFUs and gpm from a plumbing engineer for a project site that has office and a maintenance shop. For now assuming 8 hr work day. However the ahj is interested in a gallons per day rate. What's the conversion factor? I'm assuming peaking factors are...
  3. CPENG78

    Thrust Block Factor of Safety

    Thank you all. Your comments make complete sense. I was curious about the origin of that initial "1.5". And yes acquainted with placement of the block in undisturbed soil which is ok in some but not necessarily in others. While the use of blocks may be a bit out of date, it is still part of many...
  4. CPENG78

    Thrust Block Factor of Safety

    Hi Everyone, I've searched if there were similar posts with my question but couldn't finding anything specific, other than on a thread that was closed so here it goes. When it comes to thrust block sizing, NFPA 24 calculation methodology includes a Factor of in their equation and at least NFPA...
  5. CPENG78

    Rigid Pavement Design

    Thank you all for your input. I actually do have a copy of "Pavement Analysis and Design" by Yang H.Huang but since I'm traveling don't have handy access. Will certainly look into these. Thank you again
  6. CPENG78

    Rigid Pavement Design

    All, I'm looking for a calculator that is easily accessible that I can use to back calculate the adequacy of a concrete section. Basically I'm encountering the need to show whether a 4" Concrete Over 12" Aggregate Base will hold an occasional 22,000 lbs axle load. Long while ago, I used to use...
  7. CPENG78

    Civil Engineer Roles

    Hi Overswing, I've worked in both structural and land development firms though the great majority of my experience is in land development. I agree with others that even as a land development engineer, we should understand the basics of both structural and geotechnical engineering so we can...
  8. CPENG78

    Rain chains?

    msquared48 - This is for an application in the San Francisco bay area. I also have another application in Houston, TX
  9. CPENG78

    Rain chains?

    Completely understandable and valid points. I believe that as civil designers, its imperative that geotechnical and structural recommendations are considered and implemented accordingly (and early) including constant coordination/communication with available review time for this disciplines to...
  10. CPENG78

    Rain chains?

    Has anyone ever sized a rainchain for flow? I have a project where client is considering instead of your traditional downspouts. I've seen them on projects but I don't recall been involved in the sizing. With so many factors (due to the so many choices in style and configuration), my initial...
  11. CPENG78

    Fire Flow Test w Pitot Pressure

    Thanks Pinwards Yes, agree. Luckily there appears to be a newer and separate larger line which is exhibiting larger flows, in the order of 1750 gpm at 20 psi residual. So trying to clarify how older hydrants and the newer line are related by testing at different points. The data I provided was...
  12. CPENG78

    Fire Flow Test w Pitot Pressure

    All, Its been a while for me but for fire flows in the past I was used to receiving my static pressure, flow and residual pressure. I would then either graphically or mathematically would utilize these numbers to predict how the system performed to say either at minimum pressure of 25 or 20 psi...
  13. CPENG78

    Code Reference - Grade Outside the Building

    BIMR - That is correct, there would represent a step to finish grade outside. However I've come across ways around this. All, I actually found the reference in the code that I was looking for and thought I would share: 2012 IBC 2304.11.2.2 - "Wood supported by exterior foundation walls. Wood...
  14. CPENG78

    Code Reference - Grade Outside the Building

    I've definetely come across the grading away from building face, I believe chapter 18 of the IBC. What I'm looking for is the height from finish floor to adjacent grade outside the building. I have across some references in the IRC (as bimr points out) but nothing in the CBC or IMC. I was under...
  15. CPENG78

    Code Reference - Grade Outside the Building

    Need help. I'm looking for the building code reference, either CBC, IBC or both from what I recall the requirement for grade outside the building to be a certain height from finish floor. I recall its 6 inches if the finish grade outside is concrete and 8 inches if its dirt. Can someone point me...
  16. CPENG78

    ADA Parking Stalls in Texas

    Looking for guidance on this one. I'm relatively new to practicing engineering in Texas. I have a parking lot project where there are a couple of handicapped parking stalls. Through my previous engagement, I'm used to seeing the International Symbol of Accessibility painted on the pavement in...
  17. CPENG78

    Tc and IDF Curves

    Thanks gbam. I am in the states but my project is in the middle east. Hope others can chime in on this to get additional input.
  18. CPENG78

    Tc and IDF Curves

    Modeling question: The ahj has a minimum Tc = 5 minutes requirement. The available rainfall data for the project site has IDF curves for a series of storms with a minimum duration of 10 minutes and higher. Have you encountered such a scenario? It would appear to me that I don't necessarily need...
  19. CPENG78

    Type 1 Fire Truck

    As always thank you all for your input. Acknowledged on the code reference and the model of truck check with the agency. Unfortunately the fire agency has not provided anything beyond a description of "Type 1 fire truck". In the absence of more information, I was hoping to do an initial rough...
  20. CPENG78

    Type 1 Fire Truck

    Does anyone have a good reference point to find standards dimensions and turning specs for a Type 1 Fire truck? Its my understanding that this type of truck appears to be used in wild land/open space fire events.

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