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Integrated Bridge Load-Rating Analysis and Modeling LARS Bridge and LARS are companion solutions for bridge load-rating calculation, analysis, and analytical modeling for existing and planned bridges. The software interoperates seamlessly to handle…

LARS LRFR NonComposite Steel Report Information LARS checks the compression flange and tension for top and bottom for each checkpoint. This is performed because any checkpoint along a beam may be the location at which contraflexure occurs. When the…

LARS LFD Non Composite Steel Verification Structure ID = 1311151 Member ID = G13 Checkpoint = 1.5 1) Inventory moment capacity for top fiber +bend for G02 at checkpoint 1.5 is 681.8C ft-kips as circled in the report below. “C” denotes “Compact…

LARS LFD Composite Prestressed Concrete Verification Structure ID = 1311151 Member ID = G02 Checkpoint = 1.5 “U” denotes “Ultimate Moment”. The ultimate moment from the “Additional Section Data” is 7627.85 ft-kips. The computation for Mu is…

LARS LFD Composite Prestressed Concrete Report Information LARS checks the compression flange and tension for top and bottom for each checkpoint. This is performed because any checkpoint along a beam may be the location at which contraflexure occurs…

Enter holes into truss detailed section Consider the channel section below. Add a hole to the right channel: 1) 2) 3) 4) Follow the same procedure for the left channel The procedure for entering defects is the same as for…

Method to View Hidden Continuous Dead Loads on Flexural Members Access the Deadload Profile view by going to Description ----- Deadload Description dialog. The Deadload Profile initially displays the continuous dead load with the largest magnitude.…

Use Bridge ID Greater Than 8 Characters LARS Bridge has an option to use the bmd filename as the Structure ID. To use this option, perform the following steps: 1) Edit c:\windows\bmodel.ini using Notepad. 2) Insert the following text highlighted…

LARS Bridge has a standard prestressed concrete section library. This library is accessed in the same manner as the standard steel section library. Four different beam shapes are available in the library. They are: 1) (B)ox beams which may be solid…

Change a non-standard prestressed concrete section to a standard prestressed This document contains instructions on how to select the prestressed concrete standard section library. Open the concrete description from Description -> Member Shape Description…

Wheel Reaction Factor formerly called Multi-Floor Beam Only Option Floorbeam live loads may be reduced using the Description > General Member Information > (Wheel Reaction Factor) option – as shown below. This option is used when the floorbeams…