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  1. profplan

    HSS Columns in Moment Frames SDC - C

    Thank you all for the posts. It is a steel framed building and I am planning to use steel moment frames in both directions for the LLRS however may try to supplement with braced cores at the building ends, if necessary. The other building feature is a 2 story clear height garage attached...
  2. profplan

    HSS Columns in Moment Frames SDC - C

    MrHershey, Thanks for the advice. Height of the building is typical 2 story, about 30 ft tall. I guess that does not help much to change the SDC?
  3. profplan

    HSS Columns in Moment Frames SDC - C

    I'm designing a 2 story steel framed building with moment frames each direction on the east coast which could end up in either SDC C or D. The frames use HSS square 77" columns and wide flange beams for the frames. Assuming it is SDC C, would I be able to use R=3 and treat this as a non-seismic...
  4. profplan

    AWS D1.6 Minimum Partial Pen groove weld for Pipe sextinos

    I would like to know the minimum depth of partial joint penetration that is pre-qualified by AWS D1.6 for the following AISI Type 316 standard pipe sections: 3" pipe 4" pipe 8" pipe I don't have the AWS D1.6 code (nor the AWS D1.1) to use as a reference or compare. A pair of 8" pipes, 4 ft...
  5. profplan

    AWSD1.6 Partial Groove welds for Tubular Sections

    Hi All, I would like to know the minimum depth of partial joint penetration that is pre-qualified by AWS D1.6 for the following AISI Type 316 standard pipe sections: 3" pipe 4" pipe 8" pipe I don't have the AWS D1.6 code (nor the AWS D1.1) to use as a reference or compare. A pair of 8"...
  6. profplan

    Precast Fdn Pier Installation

    A contractor proposes to install 42" diameter x 10 to 15 ft long precast piers in sand/silt soil for support of 40 ft traffic poles. The standard procedure, Dept of Transportation, is to pre-drill holes 12" larger than the foundation and place clean sand in the voids using hydraulic methods...
  7. profplan

    304 vs 316 Stainless for WWTP

    ATSE, Thanks. that was my thought but I don't have any experience with it. Rather puzzling though, it is actually the public utility that is interested in using Type 304 stainless steel rather than 316.
  8. profplan

    304 vs 316 Stainless for WWTP

    All, Does anyone have experience specifying AISI Type 304 Stainless Steel for platforms and structural members supporting operating equipment and large pipelines in concrete oxidation ditches for Wastewater Treatment Plants. Type 316 was specified but questions of cost have arisen. The...
  9. profplan

    AISI 1986 Design Manual CFS

    dhengr, Thanks again. I have collected a few past designs (light gage/cold formed steel) over the years, the recent ones have mostly been software analysis which are less helpful. A search indicates the latest Yu's text book, 4th Edition (2010), includes all the provisions for the latest...
  10. profplan

    AISI 1986 Design Manual CFS

    Thanks all. I plan to design according to the latest AISI Specification 2007. dhengr - I understand your frustration with the ever changing codes. I'll take your advice and purchase the latest edition of Wei Wen Yu's Cold formed Steel textbook. I don't know how much information on...
  11. profplan

    Autocad Postscript (.PS) files

    An agency has issued Contract Document Drawings (several hundred files) for bidders in an Autocad Postscript Support (.PS) format. I am not familiar with this format and don't know how to display it. How can I view the drawing files? Is there a driver or download software required...
  12. profplan

    AISI 1986 Design Manual CFS

    I am trying to make a decision to purchase either the 1986 or the 1996 edition of the AISI Design Manual (available online at AISI store) for the design of cold formed steel (light gage framing) and need some advice from those who have used both. Any preferences and why? I generally only...
  13. profplan

    IBC 1607.9 >100psf Live Load Reduction

    Thanks all, the consensus is clear. I can see that a roof level does not meet the floor definition with typical occupant or floor usage loads, unless it is, of course used and specified as a floor. Two or more floors would then define a 3 or more story building with an unoccupied roof.
  14. profplan

    IBC 1607.9 >100psf Live Load Reduction

    IBC 1607.9 paraphrased: Live loads greater than 100 psf cannot be reduced, except that live loads for members supporting two or more floors may be reduced by as much as 20 percent. Would the 20% reduction apply to column bases and foundations in a two story building, i.e., roof counts as a...
  15. profplan

    Drift Limits for Brick Cladding

    Thanks for the posts. concretemasonry, Fortunately, just wind will be a consideration based on the location. I realize that the brick has to structurally span between floors (and roof) to resist wind unless I provide a structural backup stiff enough to relieve the brick. abusement park...
  16. profplan

    Drift Limits for Brick Cladding

    Thanks all for the valuable comments. dhengr, I see your point regarding the question. I work for the EOR. It appears the CM will likely convince the owner to use the PEMB. Cross bracing has been discussed, to increase frame stiffness and reduce drift to limits suitable for a brick...
  17. profplan

    Drift Limits for Brick Cladding

    WillisV - Thanks, can you explain why a 10 year wind is used?
  18. profplan

    Drift Limits for Brick Cladding

    As background, a two story, 3 wythe brick exterior clad rectangular building built in the 1930's is to be gutted and replaced with a new 2 story steel structure. The brick exterior will be temporarily braced and preserved in the new building. The Construction manager wants to use a...
  19. profplan

    Maximum Rebar Length

    Thanks everyone. I'll call a couple of suppliers to confirm the 60ft length is available.
  20. profplan

    Maximum Rebar Length

    Can anyone advise what the typical maximum length of reinforcing bars (# 8 and larger ) that is manufactured and transported to the construction site (no special transporting permits)? I am designing a large foundation mat for concrete tanks.

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