RM Bridge Advanced Wizard Help

Traffic Page

Traffic loading consists in defining Lane placement, Dynamic load allowance, Design Vehicular Live load and Pedestrian load.

Lane placement is determined by:

SettingDescription
Upper table The number of lanes and the particular eccentricity for each lane are calculated automatically from the input of the road way width (rww) given in the section SDL of the load definition using a default width of notional lanes of 3.2 m (just one input value for all lanes). However, these settings could be adjusted by the user. The lanes are distributed onto the road way from left to right, whereas using option "Mirror" will apply them also starting from the right side (default setting "Yes"). In the stage calculation of RM Bridge these two situations will then be superposed with each other.
Dynamic load allowance For design purposes, α shall be specified as a proportion of the traffic load and shall be applied as specified in Clause 6.7.2. from AS 5100.2.
  • Magnitude
  • The design action is equal to (1 + α) × the load factor × the action under consideration.
  • The value of α for the appropriate loading shall be as given in Table 6.7.2.
  • M1600 = 1.3
  • M1600 tri-axle = 1.35
Design load Is applied according to AS5100.2-2004 6.2 Road Traffic chapter SM1600 Loads.
  • M1600 moving traffic load: YES/NO
  • M1600 moving tri-axle traffic load: YES/NO
  • S1600 stationary traffic load: YES/NO
Accompanying Lane factors If more than one lane is loaded, the A160, M1600 or S1600 loading applied to the additional lanes shall be multiplied by the accompanying lane factors given in Table 6.6.
Pedestrian Loads Consider pedestrian load (Yes/No) defines whether the pedestrian load shall be considered or not. Intensity left/right and eccentricity left/right defines the intensity and the eccentricity of the linear distributed load on the left and right side of the roadway. Will be computed automatically in RM depending on the loaded area from AS5100.2-2004 7.1 fig 7.