What are the units for the following input parameters in LARS for shear stirrups in a concrete beam? The headers do not appear to expand and the units are cut off. The "Help" manual is no help as it doesn't specify the units either. I'm assuming the stirrup…

I am trying to re-run an old '.BMD' LARS file that was created in version 5 back in 2013. I installed version 20.02.00.101 and followed the instructions to convert the '.BMD' file to a '.LRS' file. When I open the new '.LRS' file on one computer,…

Is it possible to run v20 alongside v10.09.00.03 on the same machine? Or will the new version overwrite v10.09.00.03? We are needing to test v20 and want to ensure there isn't any interruption to our current working environment with v10.09.00.03.

OpenBridge Special Interest Group: Sharing Information Among Disciplines Using OpenBridge Designer Host: Alex Mabrich, Senior Application Engineer, Bentley Systems, Inc. Date/Time: March 26, 2020 at 02:00 P.M. EDT Register Now This OpenBridge…

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…

I am using LARS Bridge Connect Edition Version 10.05.00.10 and when I try to open the Structure Configuration tab to define the spans the dialog box does not appear, I only get an empty profile as shown in the attached screen shot. I have the same issue…

I am wondering how do I model the FHWA Fast Act EV Loading (EV2 and EV3)? Thanks!

I'm doing a rating of a Girder-Floorbeam-Stringer bridge in LARS (LFR). I hardcoded the input files to automatically create check points at section changes '[SectionChangeGenerateCheckPoints] 1', and that appears to work fine except for with the floor…

I've modeled my two simple-span girder-floorbeam-stringer bridge in two separate models, and my thru-girders in my Span 2 model are coming out with a much lower capacity than expected. They are coming out with rating factors around 0.1-0.4 for H15, HS20…

My colleagues and I have started recording videos and posting them to your YouTube page in the last few weeks. These 1-5 minute clips are there to assist you with day to day use of the various Bentley Bridge solutions. The CONNECT Advisor will assist…

I am load rating (LFD) a ThruGirder-Floorbeam-Stringer bridge with open-grid steel deck. The deck is welded to the floorbeams and stringers only. There is no connection of the deck to the girders. The only load path for live load to get to the Thru-Girders…

I am having issues with the way Bentley LARS is reporting the ratings under Member Summary (TABULAR). I am currently running version v10.03.00.01 and when I open the member summary report the inventory and operating ratings are not in the same row as…

I am looking to run LRFR and have gamma_LL calculated automatically by setting STRENGTH I & II Factors equal to 0 based on the following Bentley post: http://communities.bentley.com/products/bridge_design___engineering/w/bridge_design_and_engineering__wiki…

Hello all, I just searched through the forums and the wiki and couldn't find an answer to this question. I'm using LARS Bridge V8i (SELECT Series 3) - Version 6.00.01.08 In the "Description" drop down menu --> General Member Information There…

Will an existing "LARS Bridge" license for V6 be valid for use of LARS Bridge Connect 10.00.00.01, or is a new license required?

What does error message " No Data Type 10's in data for this member. (I)" mean?

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…

I ran an LFD rating for a 3 span continous composite steel girder. The rating factors were less than 1, with the interior beam controlling. The client asked that we run it in ASD since the orginal steel design used the elastic design method. I changed…

LARS can calculate LRFD LLDF's, and will auto-generate the ranges over which the varying distribution factors will govern. For a continuous member, it appears as if it calculates these ranges such that 20% of the span length on either side of an interior…

I am modeling a steel floor beam in LARS using LFD and I am recieving this error message: AASHTO 10.34.4.4 M/V interaction fb calculated exceeds calculated bending stress. Allowable Stress analysis only. (I) Obviously it is referring to AASHTO but what…

When analyzing a bridge that was designed as NONCOMPOSITE SIMPLE SPANS for dead loads (not including parapet & FWS) and as CONTINUOUS for live loads, how should the girder and slab information be inputted in order to account for this?

I am having difficulty with the HL-93 load in LARS v. 5.00.01.00. When I attempt to use the HL93 load the program instead rates the bridge using a OV20 load.

I am load rating a CPS bridge (AASHTO I-beams with a reinforced concrete deck). Does LARS Bridge automatically calculate the dead load of the concrete deck or do I need to add it as a continuous load in the Dead Load Description input menu?