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Recent content by visitor

  1. visitor

    Tee Web Compression (ASD)

    "Even with, say, a span of 58' (hypothetically)!? Fb=.6Fy*(Qs=1)? This doesn't seem right unless stringent lateral bracing criteria are met for the stem (76bf/(square root of Fy), maybe?). And, well, if that's the case, why even bother looking at it as an inverted tee, just examine it as...
  2. visitor

    Tee Web Compression (ASD)

    Even with, say, a span of 58' (hypothetically)!? Fb=.6Fy*(Qs=1)? This doesn't seem right unless stringent lateral bracing criteria are met for the stem (76bf/(square root of Fy), maybe?). And, well, if that's the case, why even bother looking at it as an inverted tee, just examine it as a...
  3. visitor

    Tee Web Compression (ASD)

    If I have a built-up tee section that is receiving a load such that the web (stem) is in compression, what is the allowable bending stress of the section if the b/t ratio is less than the noncompact limit of 127/(square root of Fy)? There is an entire appendix devoted to situation where...
  4. visitor

    parking garage

    The live load can be 2.5 KN/Sq.M which is similar for carparking structures.
  5. visitor

    Existing RC slab evaluation

    Can you provide some steel beams below the slab ( the steel beams can span between the columns / walls at the boundary? If this is possible then you can avoid the central column.
  6. visitor

    Footing Inspection

    My company is active in performing roadway inspection so we have many nuclear gauges and DCPs. We are now getting into building inspection. My question is regarding equipment for footing inspections. It seems that in our region, the pocket penetrometers are typically used for this test. From...
  7. visitor

    fea contact problem

    dear all, I have a spindle axle with bearing attached to it.now i have to carryout fea analysis.can anyone suggest me how to simulate this problem.ie type of element to be chosen is it a non-linear analysis. thanks.and cheers.
  8. visitor

    Transformers in parallel: What are the pitfalls?

    How about wiring two step up transformers parallel? Specifically, two 120VAC to 240VAC transformers. We need to run a motor that came from Australia and is a 240 volt motor. We have several step up transformers (same type), but I'm concerned about overloading one transformer. If the current...
  9. visitor

    Water Mist system for fire protection

    Hi friends, Is GI heavy class pipe suitable for water mist system?System pressure is about 20 bar and the application is in a underground services tunnel.Any advice will be appreciated. thanks AKS
  10. visitor

    The sealing forces by ball valves

    How do you calculate sealing forces by ball valves
  11. visitor

    CHECK VALVES

    now, cavitation can happen when we use this type of valves especially when we use them with pumps which can cause damage to pump . these valves to my knowledge are normally designed for installation in horizontal pipe runs or in vertical lines where flow is up only. i suggest to make sure the...
  12. visitor

    CHECK VALVES

    check valves are very important when we deal with pumps and fluids, hight velocity systems, flow must be sufficient to keep the valve open fully otherwise it will cause damages and high pressure drop. location these valve in system is critical and it must be not less than five pipe diameters...
  13. visitor

    CHECK VALVES

    ?CHECK VALVES USE?
  14. visitor

    ? Trunnion mounted or floating ball valve

    ?check valves, purpose of use?
  15. visitor

    USING COM624 PROGRAM

    I need help with using Com624 program that I have downloaded from FHWA web site. I am trying to assess pile behavior under 1 and 2 inch deflection once as a free head pile and once as fixed head pile. under "data for loading" submenue of the "analysis" menu there are 4...
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