• USA State DOT links

    Oct.14.2021:Work in progress. Links to US State DOT design manuals and standard drawings can be found in the table below. State Structures Design Manual Standard Plans Alabama link link Alaska …

  • AASHTO LRFD 7th Edition

    Hello, community, I’m taking the SE exam in two weeks and got paranoid a few days ago about the AASHTO book edition. I have the 6th edition and it was sufficient for winging it on the PE structure. However, I’ve been reading that the SE am section has…

  • LARS - LLDFs Causing Irregular Truck Positions & Moments

    Hello, I have a 73.5' simple span, rolled beam LARS V6.00.01.08 analysis that has varying LLDFs due to varying overhang widths at the supports. Using LRFD, I have input three ranges for both moment and shear. When looking at the output tables and…

  • LRFR Capacity of Braced, Compact, Non-Composite Section

    Member B02 in the attached file is a rolled steel floorbeam (W21x182) which qualifies as a braced, compact section. It is non-composite (no concrete deck). LARS uses the elastic moment capacity (Fy)(Sx) = 50 ksi x 417 in3 / 12 = 1737.5 k-ft to compute…

  • LARS - LRFD Live Load Distribution Factors for SS beams with a Non-composite Concrete Deck

    I am modeling simple-span steel beams with a non-composite concrete deck. What formulas should I be using to calculate the LRFD distribution factors? I note that when I let LARS calculate the factors, the factors calculated when I model it as CSC are…

  • RE: Solid Wall Pier

    Hi, I'm also trying to model a solid wall pier using LEAP RC-Pier V12.01.00.57. This version has the 'Wall Pier' option, however the generated wall design is coming up with rather impractical reinforcement layouts (#18 @ 12") oriented parallel to the…

  • Solid Wall Pier

    What is the best way to model a solid wall pier using RC Pier? I am thinking there are two possibilities: 1) Model short cap (1' height or less) and one column (non-tapered in x and z direction) centered on footing 2) Model short cap (1' height…

  • Auto-generation of wind load on structure (WS) per FDOT Structures Design Guidelines (SDG) 2013

    One of the new features added to the latest RC-PIER is the comprehensive auto-generation of WS loads and load combinations per the FDOT SDG 2013: An option for WS load auto-generation is now offered under the “Loads” tab. FDOT strength and service…

  • Automated Bridge Drawings from LEAP Bridge

  • New Release - LEAP Bridge V8i SELECTseries 5 (v12.01.00.57) - now available

    LEAP Bridge v12.01.00.57 Enhancements: Introduced a new analysis option “Integral Abutment Bridge” in the Project tab. This option allows users to analyze and design integral abutments. Support for Pile Bent and Wall Pier Type abutments has…

  • LEAP Bridge Infographic

  • New Release: LEAP Bridge V8i (SELECTseries 2) v10.00.01. Coming Soon ...

    LEAP Bridge v8i (SELECTseries 2) v10.00.01 is a new release which incorporates numerous new features and enhancements component programs. LEAP Bridge v10.00.01 Enhancements ABC Wizard now allows users to model T beam bridges, reinforced or post…

  • Bridge Engineer? Create your own 3D Bridge Models ...

    Always wanted to create your own 3D Bridge Models for use in presentations and reports? Using LEAP Bridge this is real easy and ultra cool. Most importantly it is the same structural model that is used to analyze and design your bridge. A simple byproduct…

  • Re: COnbox: Side-by-side option

    The side-by-side option in CONBOX allows you to apply the provisions of LRFD Art. 4.6.2.2.5 Special Loads with Other Traffic. SBS: Side-by-Side live load responses use the following equations: · LLRsp = LLRsp(PermitLL) * DF1/Z + LLRsp(DesignLL…

  • RC Pier Column Design

    I cannot match the values that RC Pier generates for the column's moment magnification calculation for the Bd value (Ratio of Perm. Moment/Total Moment from AASHTO LRFD eqn 5.7.4.3-2). I have tried the minimum eccentricity from the AASHTO LFD code. I…

  • RC-Pier: Best way to input vertical wind loads on pier.

    I'm trying to apply vertical wind loads on a pier per AASHTO LRFD 3.8.2. The problem I have is with the load combination generation. This load shoud only be applied during Strength III and Service IV limit states. Is there a way to specify this for the…
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