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This page is devoted to frequently asked questions (FAQ) related to vehicle application during moving-load analysis.

 On this page:

Table of Contents


How is span length determined for vehicle axle-length effects?

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  • Reduce the axle loads by the resultant of the uniform load tributary to each axle within the footprint of the vehicle. This approach may be either conservative or unconservative, depending on whether concentrated or uniform loads govern response.


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Related Incidents:

  • Incident 24426: Apply uniform lane load only outside of the vehicle footprint

Related Emails:

  • Email "Vehicle form clarifications": Clarification of lane negative moments at supports, minimum dist allowed from axle loads and length effects option of the vehicle definition form (ok → df, 1/11/2010, ID 6357793)