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  • Users: bengineer
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  1. bengineer

    Shrinkage of hardwood floor

    Just like lining up against the Fridge, you are treading on somewhat dangerous ground here. Most commercial wood products are considered dry at 15-19% moisture content. If you keep your condo excessively dry, you may have contributed to the problem if it is indeed drying. Most wood floors...
  2. bengineer

    Support pole for Light

    Like the spreads on the upcoming super bowl game, there are many choices. The easiest is to go to a lighting manufacturer's web site and see what they use for a similar condition. Wind speeds vary considerably for Texas, especially in the coastal regions, and this will have a significant...
  3. bengineer

    elastic constants for wood/ bulk and shear moduli

    Just like the US Olympic team, wood is not homogeneous. A good source for Young's modulus is the supplement to the National Design Specification. This gives E's in the range of 800,000 psi to 1,400,000 psi for Oak. The larger the piece being investigated the more variation in the elastic...
  4. bengineer

    Uplift Stability

    Just like a sumo wrestlers shorts, you want to have your building firmly supported. There is a load combination that considers the wind uplift case. In this load case you combine 0.75 DL + Wind Uplift. This case provides a factor safety of 1.33 against uplift and is fairly common.
  5. bengineer

    allowable soil bearing stress

    Just like on the luge, you have to lean into the turns. For vertical forces, 2000 psf is probably acceptable, however this will also depend on the bearing strata below the granular base. For lateral loads the modulus of subgrade reaction must be known to perform an analyis.
  6. bengineer

    Flag pole base design

    How long was the sign in its original location? If it has been there for quite some time, I would copy the original design if available. No use trying to reinvent the wheel.
  7. bengineer

    Steel Plate Overlay

    Just like the US will roll over the competition at the upcoming olympics, equipment rolling over a thin slab will eventually degrade it. Another solution, which is lighter and quite effective, is to use tounge & groove wood deck. This will absord a lot of the dynamic effects as well as in...
  8. bengineer

    Bending Coefficient, Cb, for Allowable Stress Design

    Just as the triple lux may not win you the gold, this method will not necessarily provide you with the correct section. This method is a good approximation, however the shape should still be checked per the applicable formulas from AISC chapter F.
  9. bengineer

    torsional design of steel beam with top flange restrained condition

    You have as many choices available to solve this as there are ways to play pinochle. The simplest solution would be to provide kickers(braces) from the bottom beam flange opposite the bracket load up to the slab. This will resolve the forces to merely axial loads with possibly some local web...
  10. bengineer

    Need to Extend a Steel Beam by 6 Inches

    Sounds like you're coming up short just like the Jamaican bobsled team. It may be possible to weld a seat type extension onto the beam similar to a bar joist bearing; just make sure the welds can transfer the moment and shear occuring at their connection to the W8.
  11. bengineer

    Help! Beam Caluclation

    Just like the Lions and Tampa Bay playbooks, there are many unknowns here. It sounds like you have a cantilever beam with a fixed base and linearly increasing diameter to the base. A good source for this type of problem is Roark and Young, 'Formulas for Stress and Strain'. If you are having...
  12. bengineer

    Foundations Book

    Just like tickets to the current Bulls games, a very reasonably priced and practical book is put out by the navy, it's either DM3 or DM7 and can be found online in PDF format for free.
  13. bengineer

    Discussion - Should Software Producers be Registered?

    Like rookies vs. pros, another thing to consider: How many of your college professors were licensed/registered professional engineers. It's a sad state of affairs when the ones who do the teaching cannot even pass the examinations. In addition, ASCE is pushing for a master's degree before...
  14. bengineer

    Shear in Retaining Wall

    ishvaaag..... Your use of the english language, as demonstrated in your reply above, is comparable to a pro bowler on a bocce ball court. I don't mean to be rude, but I can't understand a word. Next time you reply try the "KISS" method.
  15. bengineer

    Flat roof repairs

    European standards compare to American about as well as soccer does to football. You don't say where the home is, but it sounds like maybe snow build-up is your problem. If this is the case, you need to roof or flash up the side of the end wall adjacent to the flat roof as high as the snow...
  16. bengineer

    History of Roof Trusses

    Hey Viking fan, the guy before you said the same thing. You are taking up valuable screen space. Go Bears!!!!
  17. bengineer

    Bridge Engineering

    Just like the Lions defense, you have a serious problem. The cable end should be removed and the concrete surrounding it repaired with epoxy as necessary.
  18. bengineer

    Discussion - Should Software Producers be Registered?

    I believe that software registration is like getting onto an NFC conference team, you have to be qualified to make it. Unfortunately in the NFC you don't have to have a college degree, so the standards are declining. I think the same thing is happening with software developers. You look at...

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