MDX Software - FAQ #18
Dead loading effects easily are
checked with an independent analysis program, but how can I check system
analysis live loading effects?
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One can generate the influence surface tables with DISPLAY INFLUENCE SURFACES or INFGDR, and place trucks in the locations where values in tables indicate maximum effects.
Ordinates to the surfaces at each wheel location can be interpolated, and the
product of (1) influence surface ordinate, (2) wheel load, and (3) impact summed for all wheels to check a tabulated effects value. This can be done for all lanes and multipresence factors applied for the governing value.