General
Influence Surface: Ensure that the appropriate coefficients (braking, centrifugal, gravity, wind on I) are chosen for the desired scenario.
Fatigue[Yes/No]: If this is not a fatigue case, the maximum negative stress and maximum positive stress can be generated from different lane placements. However, when dealing with a fatigue case, a distinct methodology must be employed to calculate stress ranges from single lane placement. Please confirm by responding "Yes" if this is a fatigue case.
Multiple Presence Factor: Per AASHTO, the multiple presence factors are 1.2 for a single lane, 1 for two lanes, 0.85 for three lanes, and 0.65 for four lanes and more
Design Lanes
Different placements can be made for each design lane, such as HL93 case, HL93 2 truck case, and HL93 tandem case. These options can be entered as Design Lane Option 1, 2, and 3, respectively.
Design Lane Option 1:
Design Lane Option 2:
Design Lane Option 3:
Design Lane Option 4:
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