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Recent content by gregnordholm

  1. gregnordholm

    Design wind speeds for container crane in Lagos

    Any ideas about a max design wind speed in Lagos. there is a national building code for nigheria but i have not yet figured out how to get a copy in english
  2. gregnordholm

    CAD/Details of ISO Shipping Containers

    Containerization International has more info on dims. Individual manufacturers have the scantlings for thier own unique designs.
  3. gregnordholm

    Bridge of Americas-Panama

    I am looking for something definitive regarding the maximum vertical clearance above high water for the Bridge of the Americas in Panama. Officially it is 201 feet, but I have also been told that real maximum is significantly higher. Does anyone know? Any of the bridges designers reading this...
  4. gregnordholm

    Welding AISI 1536 pipe

    I need to weld some 1536 pipe for a structural application. I am having a hard time finding out what ASTM equivalent is, or what AWS approved procedure to use for the weld. The pipe is 20 in dia with 1/2 in. wall. Sulphur and phosphorus are both less than .008 Fy is 71 KSI Ftensile is 91 KSI...
  5. gregnordholm

    Welding AISI 1536 pipe

    We have a bunch of 1536 Carbon Manganese pipe that we want to use for a structural application. I am trying to determine the AWS approved welding procedure for thicknesses of 3/4 in or less. We have half in thick wall pipe x 20 in dia. Sulphur and Phophorus are both less than .008. Carbon...
  6. gregnordholm

    joint connections in rectangular steel square tube trusses

    I got the reference mentioned from CISC and found them very helpful and prompt. Its a great reference. Also AISC has a free down load "LOAD AND RESISTANCE FACTOR DESIGN SPECIFICATION FOR STEEL HOLLOW STRUCTURAL SECTIONS"
  7. gregnordholm

    joint connections in rectangular steel square tube trusses

    Thanks for this info. You have quoted my own major rule of thumb--if it looks bad, or feels bad, it probably is.
  8. gregnordholm

    marine structures

    Much ship structure is designed by getting sizes or section properties, etc. from Rule books like American Bureau of Shipping, Lloyd's, Germanischer Lloyd, Det Norske Veritas, NKK, Etc. I have gone back and using first principals figured out what the safety factors are that match the required...
  9. gregnordholm

    joint connections in rectangular steel square tube trusses

    I am looking for English, AISC, etc. references to assist in design check of connections between large square tube main cords of a truss made of rectangular steel tube and the lacing tubes. The problem is that the square tube main cords are 16 x 16 x 5/8 with 6 x 6 x 3/8 tube diagonals and...
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