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  • Users: movasra
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  1. movasra

    Underground Firewater pipe-No Cement lining

    Hello, We have a situation that the contractor has installed an underground carbon steel fire water pipe that goes to a hydrant. The pipe is wrapped but it is not cement lined. I am trying to find any statement in AWWA standards (C205 maybe) that approves the pipe material. I have already...
  2. movasra

    Tank Anchorage Ratio "J" Formula

    Hi folks, Does anybody know if Ge, used in Wa fomula (E.6.2.1.1-1b)is supposed to be the fluid density instead of the specific gravity? If Ge used as specific gravity, then the units don't match up in Wa formula and you almost won't find any API 12 tank which is stable. Any comments would...
  3. movasra

    ACI 350.3R

    Hi Fellow engineers, Can anyone tell me if using ACI 350R.3R is mandated by code (i.e. IBS, CBC, ASCE, etc.) for the design of dynamic machinery foundations. Thanks a lot
  4. movasra

    Flood Load on Ring Wall Foundation

    Hi everybody, I am designing a ringwall foundation for a 30' dia tank on an AE coastal zone in California and I need to include flood load in my foundation design. What would be the right reference to use? ASCE 7-05, Caltrans BDS, or ASCE 24? any comment would be appreciated. The flood load...
  5. movasra

    Flood load calculations on ringwall foundation

    Hi, I am designing a ringwall foundation for a 30' dia tank on a coastal zone in California and I need to include flood load in my foundation design. What would be the right reference to use? ASCE 7-05, Caltrans BDS, or ASCE 24? any comment would be appreciated. The flood load elevation is 20 ft.
  6. movasra

    Do you recommend SS bolts for marine environment?

    Hi Everyone, Is there any issue with using ss bolts for connections of a small steel rack that will be placed on an existing offshore platform. The rack is made of galvanized HILTI girders and is poweder coated. Since we cant coat the bolts, we are going to use stainless steel bolts. the...
  7. movasra

    Seismic Design Force on Pipe Supports

    Hi Folks, I've designed a few steel pipe supports in refineries in accordance with CBS-07 and ASCE7-05 section 12-8 and chapter 15 (i.e chapter 15.4-2, Inverted pendulum type). But now I am just wondering if I've been using a right method of analysis. does anyone know if I should use Chapter 13...
  8. movasra

    Pull out Strength of Anchor in Tension (ACI D.5.3)

    Hi everybody, I am woking on my spread sheet for group anchor bolts design and now I am just looking for equation D-14 but for group anchors. does anybody know if this section applies to group anchors at all. why everything in section D.5.3 is about single bolts. Can I simply multiply the...
  9. movasra

    Pipe trench vs. Pipe Sleeve???

    Hi everybody, we are designing pipes in ConocoPhillips refinery and a 3-inch sour water pipe needs to cross a road which is subject to a very heavy traffic. Does anyone know if there is any reason (i.e. inspection,...) we can not use sleeves instead of a trench. the road is 16 ft long. another...
  10. movasra

    Weld type for ASTM A242??

    Hi Guys, I am not sure I am in a right forum or not but, does anybody know what type of welding I have to use for ASTM A242. Thanks a million Rahi
  11. movasra

    Equipment Operating Weight!(Seismic)

    Hi! Can anybody tell me if we have to consider the operating weight of the equipment as Live Load + Dead Load? another word, should we multiply Cs by the operating weight to obtain the Seismic Load or just multiply by the empty load? could you refer me to CBC 2007 or AISC 7-05. Thanks a lot
  12. movasra

    Design Spectral Acceleration Parameter

    Hi everybody, I am trying to find an accurate value for SDs, Design spectral acceleration, for the zip code 90745, I got 1.443 using Staad-Foundation and by assuming R=2 and I=1.25, I get such a big value for Cs=0.9 which doesn't make sence to me. Could anybody give me an acuurate value for this...
  13. movasra

    Vertical Vessel Legs Design!!!

    Hello Folks, I am trying to design legs and a foundation for a vertical vessel which has a 12'-6" height (just the vessel), and the bottom of the vessel is 3' above the grade. does anybody know if there exist any specific code (according to seismic, wind,...) regarding the minimum number of the...

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