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Recent content by StructuresDesign

  1. StructuresDesign

    Precast Concrete Column "Deformity"

    I have been able to dig up the undated architectural drawings, and the columns are precast concrete with a single 3/4" square reinforcing rod at the center of each trefoil section. From what I can gather, square reinforcement was commonly used in the 1920's-1940's.
  2. StructuresDesign

    Precast Concrete Column "Deformity"

    I think OldBldGuy may be on to something. It may be that swelling of the rusting reinforcement caused the concrete to spall off, and they then tried to patch it with a grout that subsequently reacted with water and bulged out. However, when I have a chance to get on site again, I will use a...
  3. StructuresDesign

    Precast Concrete Column "Deformity"

    Hi Structural Sleuths, Do you have any good suggestions as to what is going on with this column: For reference, the column is approx. 7" in diameter and is one of three interconnected columns with shared bases and caps. The "tumor" is hard to the touch, so it is not just paint blisters. The...
  4. StructuresDesign

    Code Changes

    In Nevada, the State adopts the IBC,IPC, etc. with amendments on January 1st the following year. However, I have worked with Nevada counties that were still using the 2003 IBC as late as 2013 (even though the State require that they adopt the same code as the State).
  5. StructuresDesign

    30' High Baseball Backstop

    If they want slats or fabric / netting in addition to the chain link fencing, you can end up with some pretty significant wind loads. I seem to recall ending up with 10" OD posts for a 30' tall backstop in NV.
  6. StructuresDesign

    Pedestrian Bridge Design

    I second the comment that AASHTO will typically not be the governing code for pedestrian bridges on private property. Also note that the AASHTO Guide Specifications document is not a code per se, it is what AASHTO consider "good practice". Also note that it uses AASHTO, not ASCE 7/IBC/CBC, load...
  7. StructuresDesign

    Cost of post & pier foundation retrofit in California

    In order for a mobile home to be considered real estate, it has to be placed on a permanent foundation. By doing so, local jurisdictions, the federal government, and lenders consider it "immobile", thus qualifying for being taxed as real property, rather than personal property, and a mortgage...
  8. StructuresDesign

    Cost of post & pier foundation retrofit in California

    Using a post and pier system with straps or earth anchors is typical for permanent foundations for mobile homes in this area. Since this is a cabin of comparable materials, weight, and size to a mobile home, it does not seem unreasonable to assume that a similar system can be engineered for...
  9. StructuresDesign

    Cost of post & pier foundation retrofit in California

    I appreciate the suggestion, but I am not particularly concerned with the means & methods of how the contractor accomplishes the job (as long as it is done correctly). Some lift the building, others do not. My question was about the cost.
  10. StructuresDesign

    Cost of post & pier foundation retrofit in California

    A potential client want to replace the existing post & pier foundation for their 500-600 sf 1930s cabin with a typical stem wall foundation due to uneven settlement. The piers are 12"x12"x12" precast concrete blocks on grade. Since the existing piers are only located along the exterior walls...
  11. StructuresDesign

    Does anybody have access to the UBC 1988 or 1991?

    Thanks! :-)
  12. StructuresDesign

    Does anybody have access to the UBC 1988 or 1991?

    I need to determine what the light and heavy storage design uniform live loads were for a building built in the early 90s. Thanks! Cecilia
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