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  • Users: McQSE
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  1. McQSE

    How to find Change in Temperature for sheet metal

    I am trying to determine the change in temperature for a standing seam metal roof in order to complete thermal expansion calculations. I would appreciate any help.
  2. McQSE

    Warehouse Renovation

    I am involved in a renovation on a warehouse that is about 60+ years old. The lateral system consists of x-bracing in one direction & a rigid truss system in the opposite direction. I attached a drawing showing the floor plan and side view showing the x-bracing locations. The drawing also...
  3. McQSE

    Help with old steel roof truss

    I am trying to find a reference for the design of a steel truss with the type of connection shown in the attached picture. Thanks for the help.
  4. McQSE

    Rust on Steel Joists

    I am involved in a renovation project where a lot of the existing bar joists have some rust on them. The roof has a lot of leaks. It appears to mainly be surface rust and not to the point where it looks like the joists have been weakened. We are going to be replacing some but would like to...
  5. McQSE

    Collecting Fees - Confiscate work

    Has anyone ever taken plans back because you could not get paid? My situation: Residential remodel project (structural) Homeowner responsible for payment Work is through builder (good relationship with builder) Construction has not started Homeowner keeps telling me the money is coming I am...
  6. McQSE

    Shrinkage Compensating Concrete Slab

    I am interested in some feedback from people who have experience using shrinkage compensating concrete for slab-on-grade applications. I am considering using this as an alternate to a post-tensioned slab. I need a monolithic slab/grade beam/footing foundation due to expansive soils so it makes...
  7. McQSE

    Partition Loads

    IBC 1607.5 states that partition loads should be considered as live loads and not be less than 20 psf. It also states this applies to cases where the location of the partitions is subject to change. ASCE 7-05 lists partitions as dead loads in table C3-1. What do you use for a partition load...
  8. McQSE

    Monolithic slab-on-grade joints

    I am interested in how other engineers detail their monolithic grade beam/slab-on-grade foundations. I am in a highly expansive clay region and I design my foundations using the WRI method. How do you limit cracking for your monolithic foundations? Sawcut contraction joints would be what I...
  9. McQSE

    Wood Perforated Shear Wall Design

    I posted an Excel program for wood perforated shear wall design over at exelcalcs (http://www.excelcalcs.com/repository/strength/civil-engineering/orderby,2/page,3/). Let me know if you try it and find something that does not work or other ways it may be improved.
  10. McQSE

    Wood Perforated Shear Wall Design

    I posted an Excel program for wood perforated shear wall design over at exelcalcs (http://www.excelcalcs.com/repository/strength/civil-engineering/orderby,2/page,3/). Let me know if you try it and find something that does not work or other ways it may be improved.
  11. McQSE

    New Foundation over Old Foundation

    I have a project where they want to build a new light industrial building in the same location the old building was located. The old building was damaged by a tornado. They want to leave the old foundation in place, add a minimum of 3 feet of fill, and then build the new foundation. The new...
  12. McQSE

    Metal Building Specs

    What specifications do you include with your metal building structural plans? I include specifications on: Concrete- • Strength • Aggregates • Admixtures • Reinforcement • Inserts • Reinforcement Cover • Tolerances for reinforcement placement • Splice lengths • Reinforcement hooks Steel- •...
  13. McQSE

    ASD or LRFD for Connection Design Reactions

    Do you use ASD or LRFD when specifying the connection reactions on structural plans to be used by the fabricator for connection design? I realize that they should be able to design by both methods. I have designed the structure using LRFD. Is it acceptable to mix design procedures (LRFD for...
  14. McQSE

    The cost of Drift

    It amazes me every time I size my structure for gravity loads and then go back to do the lateral analysis at how much larger my members need to be due to drift limitations. For instance, in my current project (one-story retail type steel building) it has doubled the size (by weight) of my...
  15. McQSE

    Rod X-Bracing In RISA 3D

    I am trying to model a structure with steel rod x-bracing in RISA 3D but having some problems. I have made the members tension only and made them weightless (density=0) (as recommended in the help manual). When I run the analysis and show the deflection diagrams the rods look like bungee...
  16. McQSE

    Steel Joist Roof Framing Economy Question

    What are some rules of economy you use for steel joist roofs? Maximize spacing? Use heavier joist to eliminate special bridging requirements?
  17. McQSE

    Steel Joist Side Slope in Commercial Building

    Does anyone orient their steel joists perpendicular to the roof slope so that the joist has a side slope? I have a commercial building with a 1% slope. I would like to run the steel joists perpendicular to the slope so they can bear on the frame and I won’t need additional framing (as I would...
  18. McQSE

    USGS Software to calculate Ss, S1, Sms, Sm1, SDs, SD1 based on zip cod

    http://earthquake.usgs.gov/research/hazmaps/design/ I just found this and thought it was pretty cool. It is better than looking at the maps.
  19. McQSE

    Metal Building Manual?

    What do you use as a design reference for metal building design. I have seen the MBMA Manual and it looks good but is expensive.
  20. McQSE

    Legal Structure of Your Engineering Company?

    I am about to start my own structural eng. company and would like some input on what legal structure is best. It will be just me for a while until I can get a lot of business. The old company I worked for was a P.A. (Professional Association). My accountant told me an LLC would probably be...

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