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  • Users: andyfabian
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  1. andyfabian

    Minimum bearing for hollow core precast plank

    Simple questions: What is the minimum bearing requirement for hollow core precast plank? What is the minimum steel beam flange width for interior bearing of plank from both sides of beam? Thanks.
  2. andyfabian

    Bolted Connection

    I am curious if anyone has a rule of thumb capacity that could help. The situation is the following: 1. It's a curtain wall system that has C6 channels at 6'-0" c/c that are connected to stiffener plates along the length of the spandrel. 2. The plate has horizontal slots for fit-up. 3. We...
  3. andyfabian

    Software

    I am having a really hard time finding the software called "ADOSS". I heard of it through this site, but have not been able to find their website. Does anyone have the we address? Thanks
  4. andyfabian

    Software

    We just got a new project that is most likely going cast-in-place. Since it is a condo that will not architecturally accommodate spandrel beams (or any beams for that matter), we are looking at flat plate construction. We have shear walls, but based on their location and configuration within...
  5. andyfabian

    Ground Snow Loads

    The IBC has regions in the ground snow load tables that are labeled CS (case specific). These areas are tricky, because not all municipalities are savy enough to provide the structural EOR with the required info. NJ utilizes the US Army Corps of Engineers Cold Regions Research and Engineering...
  6. andyfabian

    Wood Screws

    I designed a diaphragm using IBC 2003 and all the tables utilize nails for fastening (as do all other resources I have ever seen). I want to use screws to minimize squeaky floors. Where can I find a reference that gives equivalent screw sizes for common nails? I compared the allowable shear...
  7. andyfabian

    Impact Loading

    I have to design a cage for a tiger in a local zoo. The cage fencing is suppose to be some sort of wire mesh. I'm trying to determine what loads to use for a 600# tiger. The assumption is the tiger will run at the fence and hit it a specified velocity. My boss wants me to use Fd = 1/2mv^2...
  8. andyfabian

    Pipe Hangers

    I have to design secondary members to support pipes and their hangers. I stumbled upon the fact that there may be some special design consideration for the allowable stresses. Apparently, MSS SP58 (Manufacturers Standardization Society) requires 16.6 ksi maximum allowable bending stress when...
  9. andyfabian

    Purlins rotated at 20 degrees

    I have been doing engineering for timber construction for three years and have forgotten some of the particulars of designing with steel. I even wrote a spreadsheet that does what I'm about to ask, but I want to verify for the final time that I am looking at it correctly. I have purlins that...
  10. andyfabian

    Brick sluffing

    I am a structural engineer that works for a firm that specializes in restoration and preservation of historical and non-historical structures. Many of you have probably experienced older brick that was typically not kiln dried to today's standards (probably in your own homes); therefore, the...
  11. andyfabian

    HSS vs TS

    Once I read an article about the difference between HSS's and TS's. The problem is I can't remember where the article is and what the answer is. Can someone remind me of the difference please. Thanks in advance.
  12. andyfabian

    Prressure Treated Wood Retaining Wall

    I have a retaining wall that requires a redesign. The contractor originally constructed the wall without a design. It was constructed of 6x6 pressure treated lumber in (approximately) 8 feet sections. Every so often a dead man was placed using 6x6's also. The inadequacy was mainly due to...
  13. andyfabian

    I have a one-story building that is

    I have a one-story building that is 212 ft long and 66 feet wide. The trusses span 66 feet and the diaphragm is discontinuous across the ridge due to ventilation. Since the roof pitch is 8:12, is there something special that is required across the ridge in order to maintain continuity of the...
  14. andyfabian

    Beam strengthening

    When strengthening steel beams, I have typically use cover plates, WT's, etc. Before the actual design is completed, the welded connection between the two members is easily determined based on the shear flow (VQ/I). The problem is when I utilize two channels bolted to either side of the web of...

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