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  • Users: timmyo131
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  1. timmyo131

    Live load distribution factors

    I am designing a simply supported adjacent box beam bridge. The bridge is a replacement for an existing bridge which is only 16 ft wide (one design lane). So the design is for 4 box beams all 48" wide. The problem I'm running into is in Section 4.6.2.2.2 in AASHTO/DM-4 which provides...
  2. timmyo131

    PSLRFD - PennDOT's prestressed concrete beam design software

    I am new to bridge design and am using the PennDOT program PSLRFD to design a simply supported, adjacent box beam bridge. My spans are only 40' long. My deck is only 16' wide out-to-out, so I only need 4 box beams. There is no skew and no elevation differences. Pretty straight forward in...
  3. timmyo131

    Lever Rule - pedestrian load distribution

    I am new to structural bridge design. I have been tasked to design the replacement for an existing adjacent box beam bridge. I am using PennDot's PSLRFD design software. Within the "PLD - Pedestrian Live Load Command" tab, the program asks for the portion of the ped live load that is acting...

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