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  • Users: dilbert318
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  1. dilbert318

    transformer room construction

    Our client has a old transformer that is powering an electric arc furnace. They want to replace the existing transformer with a larger one (over 100 MVA). The field generated by the existing unit induced currents in the elevated concrete floor slab reinforcing bars that raised the floor...
  2. dilbert318

    ice loads on horizontal pipe above roof

    When figuring the ice load on a pipe that is running horizontaly over a flat roof sould the z elevation be taken from grade or the top of the roof?
  3. dilbert318

    masonry wall openings and out of plane loads

    When designing a cmu wall with door/window openings in a high seismic area how should you distribute the lateral load from the area above the opening to the sides of the opening? How wide of a strip on either side of the opening do you assume will take the load?
  4. dilbert318

    seismic load on free standing wall

    I am reviewing the design of a free standing masonry partition wall in a high sesimic area. The "z" in ASCE 7-02 Eq. 9.6.1.3-1 is listed as the height of the attachemnt above the base but for a free standing wall I would think it would be mid-height. What z should I use for the (2+z/h) part of...
  5. dilbert318

    seismic loads on a free standing wall

    I am reviewing the design of a free standing masonry partition wall in a high sesimic area. The "z" in ASCE 7-02 Eq. 9.6.1.3-1 is listed as the height of the attachemnt above the base but for a free standing wall I would think it would be mid-height. What z should I use for the (2+z/h) part of...
  6. dilbert318

    snow drift and sliding loads

    I am working on a roof design that has a 45 degree roof slope that suddenly changes to an almost flat roof (1/4" per foot). How can I determine the snow sliding and drifting requirements? The snow drift calcs in ASCE-7 are for a flat roof to flat roof with a step down, not a sloped roof with a...
  7. dilbert318

    Steel beam flange notch reinforcement

    I need to cut a 3 1/4" x 24" long notch out of the bottom flange of an existing W24 beam to install a piece of equipment. I cannot find any reference material describing how to handle the reinforcement. Does anyone know of sources or methods? Thank you.
  8. dilbert318

    combined column base plates

    does anyone know of a good reference for the design/analysis of base plates for combined crane & building columns that you would see in mill buildings?
  9. dilbert318

    Machine Anchor Bolt Loads

    I am trying to come up with the loads on the anchor bolts of an existing machine. There are several bolts, some are 2" and some are 3" dia., with an irregular layout. The base of the machine is "L" shaped in plan. What methods are there for comming up with the loads are machine anchor bolts and...

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