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
Number of lanes The number of lanes that can be arranged onto the clear roadway width from left to right.
Mirror option: by selecting yes/no the lanes are arranged right to left or left to right. Lane list with two columns, first for lane width which is the same for all and the Eccentricity of each lane.
Dynamic load allowance in accordance to AASTHO 3.6.2 table 3.6.2.1-1.The factor to be applied to the static load shall be taken as (1+IM /100).
  • Joints - Deck Joints for all Limit States with IM= 75 %.  
  • Fracture - Fatigue and Fracture Limit State with IM=15 %.
  • Standard - All other Limit States with IM=33 %.
Design Vehicular Live load In accordance to AASTHO 3.6.1.2, designated HL-93, shall consist of a combination of the design truck or design tandem and design lane load.
  • Design Truck -specified in figure 3.6.1.2.2-1 of AASHTO code.
  • Design Tandem -consists of two 110-kN axles spaced at 1.2 m on center.
  • Design lane load -is equal to 9.3 N/mm and emulates a caravan of trucks.
Pedestrian Loads Intensity left and right -pedestrian loads of 3.6 KN/m applied to all sidewalks with eccentricities from CG of the superstructure.