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  1. brdgbldr

    AASHTO LRFD Metric Equation 5.8.3.4.2-4

    Thanks for your response Zliazmei. That's my assumption a well. I have contacted AASHTO about this, but they have not respnded to my email yet. If I here anything from them, I'll be sure to post it here.
  2. brdgbldr

    AASHTO LRFD Metric Equation 5.8.3.4.2-4

    I have a question regarding the metric version of the 1998 AASHTO LRFD Bridge Design Specifications. Equation 5.8.3.4.2-4 shows Sxe=Sx*1.38/(Ag+0.63)<=2000 mm where Ag, Sx, and Sxe are all given in millimeters. The English Units equation is Sxe=Sx*1.38/(Ag+0.63)<=80 where Ag, Sx, and Sxe are...
  3. brdgbldr

    Beam requirement for a 10 ft bridge

    I'm just curious, but why are you looking into using steel I-beams. 10 feet is by no means a very large span and, at least in the southwest, we would normally just use a standard reinforced concrete box culvert for a span like this. That may be because steel is so expensive here...
  4. brdgbldr

    Crack in Pile Foundation

    You are correct in assuming the 50k load was for the max design load. As for your questions, Ill try to answer them as brief as possible. The layout is 4 rows of five columns. Also, the pile was designed correctly but we are still asking them to remove the cracked pile and determine the type...
  5. brdgbldr

    Crack in Pile Foundation

    Maybe I wasnt clear in our part of this project. The footing design was done by a local firm and the superstructure design and all of the construction is being performed by a branch of my company. The ped bridge consists of an arched structure in a high seismic zone and is very intolerant to...
  6. brdgbldr

    Crack in Pile Foundation

    I just received a report from our contractor about a pile lateral load test. The report states that during testing, one of the piles made a loud pop at about 30k of load. The soils engineer states that he believes this is from some of the concrete cracking. The pile is to be part of a larger...

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