Functioin
- Use the entered vehicle load classes and the traffic lanes to create moving load cases. Define type of vehicle, number of lanes, and the method to be used in moving load analysis
Call
From the main menu select [Load] tab > [Type : Moving Load] > [Moving Load Analysis Data] group > [Moving Load Cases]
Input
- To enter new or additional moving load cases
Click the Add button.
- To modify previously entered moving load cases
Select the moving load case to be modified in the dialog box and click the Modify button.
- To delete previously entered moving load cases
Select the moving load case to be deleted in the dialog box and click the Delete button.
-
Data entry method when the Add button is clicked.
-
When AASHTO Standard is selected from Moving Load Code
Load Case Name
Enter the name of a moving load case.
Description
Enter the description of the moving load case.
Multiple Presence Factor
Enter the scale factors for multi-lane vehicle loads.
AASHTO specifies 1.0 for loading up to two lanes, 0.9 for loading 3 lanes and 0.75 for loading 4 lanes or ore.
Sub-Load Cases
Enter the loading method and the traffic lane to be loaded by the vehicle load class in a moving load case.
Loading Effect
Assign the method of combining vehicle loading conditions.
Combined : Combination of vehicle classes. If more than two vehicle classes are assigned in a Moving Load Case, then this function considers all combinations, including the cases where different vehicle classes are applied simultaneously.
Independent : Apply the vehicle classes independently. If more than two vehicle classes are assigned in a Moving Load Case, then this function do not consider the cases where different vehicle classes are applied simultaneously.
When 'Independent' is selected, we can check the envelope results for each vehicle class. When 'Combined' is selected, we can check the envelope results for the combinations of each vehicle class.
-
To enter new or additional vehicle load class
Click the Add button.
-
To modify previously entered vehicle load cases
Select the vehicle load case to be modified in the dialog box and click the Modify button.
-
To delete previously entered vehicle load cases
Select the vehicle load cases to be deleted in the dialog box and click the Delete button.
- Data entry method when the Add button is clicked.
Load Case Data
Vehicle Class
Select the vehicle load class or directly enter the vehicle load.
Scale Factor
Enter the scale factor for the application of the vehicle load class.
Min. Number of Loaded Lanes
Enter the minimum number of lanes to be loaded by the vehicle load class.
Max. Number of Loaded Lanes
Enter the maximum number of lanes to be loaded by the vehicle load class.
The maximum and minimum numbers of loaded lanes must be smaller than the number of selected lanes.
Assign Lanes
Select the lanes to be loaded by the vehicle load class.
Assign the lanes to be loaded by the vehicle load class in the traffic lane list with the mouse and click to select. If previously selected lanes are to be removed from the selection, assign the lanes with the mouse and click
to delete.
The number of lanes selected to be loaded is limited to 10.
When ‘Moving Load Optimization’ is selected:
Multiple Presence Factor
Enter the scale factors for multi-lane vehicle loads.
AASHTO specifies 1.0 for loading up to two lanes, 0.9 for loading 3 lanes and 0.75 for loading 4 lanes or more.
Optimization
Min. Vehicle Distance
Enter the minimum vehicle distance in the transverse direction. The minimum distance between vehicles is determined as the larger between ‘Min. Vehicle Distance’ and ‘2 times margin’ entered from the ‘Moving Load Optimization’ dialog. 4 ft is recommended as per AASHTO Standard.
Load Case Data
Loaded Lane
Select a carriageway defined in the ‘Moving Load Optimization’ dialog.
Min. Number of Vehicles
Enter minimum number of vehicles to be loaded within the carriageway width.
Max. Number of Vehicles
Enter maximum number of vehicles to be loaded within the carriageway width.
Loading Effect
Assign the method of combining vehicle loading conditions.
Combined : Combination of vehicles. If more than two vehicles are assigned in a Moving Load Case, then this function considers all combinations, including the cases where different vehicles are applied simultaneously.
Independent : Apply the vehicles independently. If more than two vehicles are assigned in a Moving Load Case, then this function does not consider the cases where different vehicles are applied simultaneously.
Assignment Vehicle
Selected Vehicle : Select a vehicle to be applied for the moving load optimization.
Scale Factor : Scale factor for vehicle loads
Example: To find the critical results between HS20-44 and HS20-44L
-
When AASHTO LRFD is selected from Moving Load Code.
Load Case Name
Enter the moving load case name.
Description
Enter the description of the moving load case
Multiple Presence Factor
Enter the scale factors for multi-lane vehicle loads.
AASHTO LRFD specifies 1.2 for loading up to one lane, 1.0 for two lanes, 0.85 for 3 lanes and 0.65 for 3 lanes or more.
Sub-Load Cases
Enter the loading method and the traffic lane to be loaded by the vehicle load class in a moving load case.
Loading Effect
Assign the method of combining vehicle loading conditions.
Combined : Combination of vehicle classes. If more than two vehicle classes are assigned in a Moving Load Case, then this function considers all combinations, including the cases where different vehicle classes are applied simultaneously.
Independent : Apply the vehicle classes independently. If more than two vehicle classes are assigned in a Moving Load Case, then this function do not consider the cases where different vehicle classes are applied simultaneously.
When 'Independent' is selected, we can check the envelope results for each vehicle class. When 'Combined' is selected, we can check the envelope results for the combinations of each vehicle class.
- To enter new or additional vehicle load class
Click the Add button.
- To modify previously entered vehicle load cases
Select the vehicle load case to be modified in the dialog box and click the Modify button.
- To delete previously entered vehicle load cases
Select the vehicle load cases to be deleted in the dialog box and click the Delete button.
- Data entry method when the Add button is clicked.
Load Case Data
Vehicle Class
Select the vehicle load class or directly enter the vehicle load.
Scale Factor
Enter the scale factor for the application of the vehicle load class.
Min. Number of Loaded Lanes
Enter the minimum number of lanes to be loaded by the vehicle load class.
Max. Number of Loaded Lanes
Enter the maximum number of lanes to be loaded by the vehicle load class.
The maximum and minimum numbers of loaded lanes must be smaller than the number of selected lanes.
Assign Lanes
Select the lanes to be loaded by the vehicle load class.
Assign the lanes to be loaded by the vehicle load class in the traffic lane list with the mouse and click to select. If previously selected lanes are to be removed from the selection, assign the lanes with the mouse and click
to delete.
The number of lanes selected to be loaded is limited to 10.
When midas Civil envelops maximum and minimum results, two design truck scenario is considered for the negative moment and reaction only. In other words, although the maximum shear or axial force effects are found under two truck loading, midas Civil will disregard them and present the force effects from a single truck scenario. For example, if a single truck results in the maximum axial force -240 kips and double trucks result in the maximum axial force of -450 kips, midas Civil will report -240 kips in the min/max envelope results.
When ‘Load Case for Permit Vehicle’ is selected:
Load Case for Permit Vehicle
Select this option if Permit Vehicle is defined from AASHTO LRFD Code User Define option. When this option is selected the dialog box changes to a number of input fields for Permit Vehicle.
Permit Vehicle
Vehicle
Choose the vehicle to be used. The user can only choose the vehicle that has been defined as Permit Vehicle Type.
Ref. Lane
Select the reference lane to provide the location where Permit Vehicle travels.
Eccentricity
Input the distance of the Permit Vehicle to the Ref. Lane. By looking towards the direction the vehicle travels, the right side is considered positive and the left side is considered negative.
Scale factor
Enter the scale factor for the application of the vehicle loads.
When ‘Moving Load Optimization’ is selected:
Optimization
Min. Vehicle Distance
Enter the minimum vehicle distance in the transverse direction. The minimum distance between vehicles is determined as the larger between ‘Min. Vehicle Distance’ and ‘2 times margin’ entered from the ‘Moving Load Optimization’ dialog. 4 ft is recommended as per AASHTO LRFD specification.
Load Case Data
Loaded Lane
Select a carriageway defined in the ‘Moving Load Optimization’ dialog.
Min. Number of Vehicles
Enter minimum number of vehicles to be loaded within the carriageway width.
Max. Number of Vehicles
Enter maximum number of vehicles to be loaded within the carriageway width.
Loading Effect
Assign the method of combining vehicle loading conditions.
Combined : Combination of vehicles. If more than two vehicles are assigned in a Moving Load Case, then this function considers all combinations, including the cases where different vehicles are applied simultaneously.
Independent : Apply the vehicles independently. If more than two vehicles are assigned in a Moving Load Case, then this function does not consider the cases where different vehicles are applied simultaneously.
Assignment Vehicle
Selected Vehicle : Select a vehicle to be applied for the moving load optimization.
Scale Factor : Scale factor for vehicle loads
- When Canada is selected from Moving Load Code
Load Case Name
Enter the name of a moving load case.
Description
Enter the description of the moving load case.
Multiple Presence Factor
Enter the scale factors for multi-lane vehicle loads.
CAN/CSA SA-06 specifies 1.0 for loading for one lane, 0.9 for loading 2 lanes, 0.8 for loading 3 lanes, 0.7 for loading 4 lanes, 0.6 for loading 5 lanes and 0.55 for loading 6 lanes or more.
Sub-Load Cases
Enter the loading method and the traffic lane to be loaded by the vehicle load class in a moving load case.
Loading Effect
Assign the method of combining vehicle loading conditions.
Combined : Combination of vehicle classes. If more than two vehicle classes are assigned in a Moving Load Case, then this function considers all combinations, including the cases where different vehicle classes are applied simultaneously.
Independent : Apply the vehicle classes independently. If more than two vehicle classes are assigned in a Moving Load Case, then this function do not consider the cases where different vehicle classes are applied simultaneously.
When 'Independent' is selected, we can check the envelope results for each vehicle class. When 'Combined' is selected, we can check the envelope results for the combinations of each vehicle class.
-
To enter new or additional vehicle load class
Click the Add button.
-
To modify previously entered vehicle load cases
Select the vehicle load case to be modified in the dialog box and click the Modify button.
-
To delete previously entered vehicle load cases
Select the vehicle load cases to be deleted in the dialog box and click the Delete button.
-
Data entry method when the Add button is clicked.
Load Case Data
Vehicle Class
Select the vehicle load class or directly enter the vehicle load.
Scale Factor
Enter the scale factor for the application of the vehicle load class. It is recommended that scale factor should not be used for taking into account dynamic load allowance as it is taken as per the code by midas Civil, automatically.
Min. Number of Loaded Lanes
Enter the minimum number of lanes to be loaded by the vehicle load class.
Max. Number of Loaded Lanes
Enter the maximum number of lanes to be loaded by the vehicle load class.
The maximum and minimum numbers of loaded lanes must be smaller than the number of selected lanes.
Assign Lanes
Select the lanes to be loaded by the vehicle load class.
Assign the lanes to be loaded by the vehicle load class in the traffic lane list with the mouse and click to select. If previously selected lanes are to be removed from the selection, assign the lanes with the mouse and click
to delete.
The number of lanes selected to be loaded is limited to 10.
It is recommended that scale factor should not be used for taking into account dynamic load allowance as it is taken as per the code by midas Civil, automatically.
When ‘Moving Load Optimization’ is selected:
Multiple Presence Factor
Enter the multiple presence factors as per CSA S6-14.
Optimization
Min. Vehicle Distance
Enter the minimum vehicle distance in the transverse direction. The minimum distance between vehicles is determined as the larger between ‘Min. Vehicle Distance’ and ‘2 times margin’ entered from the ‘Moving Load Optimization’ dialog. 1.2 m is recommended as per CSA S6-14.
Load Case Data
Loaded Lane
Select a carriageway defined in the ‘Moving Load Optimization’ dialog.
Min. Number of Vehicles
Enter minimum number of vehicles to be loaded within the carriageway width.
Max. Number of Vehicles
Enter maximum number of vehicles to be loaded within the carriageway width.
Loading Effect
Assign the method of combining vehicle loading conditions.
Combined : Combination of vehicles. If more than two vehicles are assigned in a Moving Load Case, then this function considers all combinations, including the cases where different vehicles are applied simultaneously.
Independent : Apply the vehicles independently. If more than two vehicles are assigned in a Moving Load Case, then this function does not consider the cases where different vehicles are applied simultaneously.
Assignment Vehicle
Selected Vehicle : Select a vehicle to be applied for the moving load optimization.
Scale Factor : Scale factor for vehicle loads
Example: To find the critical results between CL-625 Truck and CL-625 Lane.
- When BS is selected form Moving Load Code
Select Load Model
- Standard Load (BD37/01, BS5400)
Auto Live Load Combination
In the case of HA&HB(Auto), combination of the live loads is automatically organized based on the selected code. Partial factors for HA and HB loads are applied in the moving load analysis. Thus, partial factors for live loads should be 1.0 in the load combination. In the case of HA, HB or HA&HB, this option should be checked off and partial factors for live loads are not taken into account in the moving load analysis. Thus, partial factors specified in the code should be applied in the load combination.
Type of Design Combination Factor
Select a limit state to determinate load factors to be applied to the moving load analysis results.
Ultimate Limit State : Applies the load factor at ultimate limit state
Serviceability Limit State : Applies the load factor at serviceability limit state
Combination of Loads
Select a combination to determinate load factors to be applied to the moving load analysis results.
Combination 1 : Applies the load factor for combination 1
Combination 2 or 3 : Applies the load factor for combination 2 or 3
Sub Load Case
When Vehicle is HA&HB (Auto)
If a number of Sub-Load Cases are defined in a Load Case, Min/Max result values from all the Sub-Load Cases are generated. That is, analysis is separately performed for each Sub-Load Case, and the Sub-Load Cases are not combined for analysis.
Load Case Data
Scale Factor : Enter the scale factor for the application of the vehicle loads.
Number of Loaded Lanes : Enter the number of lanes to apply for Moving Load Cases. The selected lanes and the number of lanes inputted should be the same.
Vehicles : Enter the type of vehicle to consider for Moving Load Cases
Assign Lanes
Assign the selected vehicles to lanes
List of Lanes : Displays the list of lanes
Selected Lanes : Select the lane
HB Straddling Two Lanes : Select the two adjacent lanes on which HB loading shall occupy any transverse position. To use this function more than two Cross Beam Type lanes should exist.
When Vehicle is HA, HB, HA&HB, Pedestrian.
Load Case Data
Scale Factor : Enter the scale factor for the application of the vehicle loads.
Number of Loaded Lanes : Enter the number of lanes to apply for Moving Load Cases. The selected lanes and the number of lanes inputted should be the same.
Vehicles : Enter the type of vehicle to consider for Moving Load Cases
Assign Lanes
Assign the selected vehicles to lanes
List of Lanes : Displays the list of lanes
Selected Lanes : Select the lane
HB Straddling Two Lanes : Becomes activated only in the case of HA&HB(Auto)
- Special Load (BD86/11)
Auto Live Load Combination
The application of combined SV/SOV and HA vehicle is automatically organized based on the BD 86/11. In order to apply SV/SOV without HA, this option should be checked off.
Type of Design Combination Factor
Select a limit state to determine partial factors to be applied to the moving load analysis results. In this case, partial factors for moving load case should be entered as 1.0 in the load combination.
Ultimate Limit State: Applies the partial factor at ultimate limit state
Serviceability Limit State: Applies the partial factor at serviceability limit state
Combination of Load
Select a combination to determinate partial factors to be applied to the moving load analysis results.
Combination 1 : Applies the partial factor for combination 1
Combination 2 or 3 : Applies the partial factor for combination 2 or 3
Load Case Data
Standard Load : Select HA vehicle.
Special Load : Select SV or SOV load model.
Assignment Lanes
List of Lanes : Display all the lanes defined.
Selected Lanes : Select the lanes on which HA or SV or SOV will be applied.
Straddling Lanes : Select the two adjacent lanes on which SV or SOV shall occupy any transverse position. Straddling lanes are supported only for the ‘Cross Beam’ type as a vehicle load distribution.
- CS 454 Assessment (ALL Model 1, Special Load)
Auto Live Load Combination
Check on to automatically apply partial factors (gamma_fl) for the combined ALL model 1 and special vehicle.
Check off to get assessment results (adequacy factor, reserve factor) for the ALL model 1 vehicle alone. The appropriate partial factor for live load can be applied in the 'Rating>Load Combination for Assessment' menu.
Type of Design Combination Factor
Select a limit state to determine partial factors to be applied to the live loads.
Ultimate Limit State : Applies the load factor at ultimate limit state
Serviceability Limit State : Applies the load factor at serviceability limit state
Combination of Loads
Select a combination to determine partial factors to be applied to the live loads.
Combination 1 : Applies the load factor for combination 1
Combination 2 or 3 : Applies the load factor for combination 2 or 3
Load Case Data
Standard Load : Select a vehicle corresponding to ALL model 1.
Special Load: Select a vehicle corresponding to Special vehicle.
Assignment Lanes
Select lanes to be applied to find the most unfavorable effect.
Selected Lanes : Select lanes where ALL model 1 is applied.
Straddling Lanes : Select two lanes where a special vehicle straddles within the two lanes. When more than one set of straddling lanes are selected, the program finds only one set of straddling lanes which will give the worst effect. The 'Straddling' option is only activated for the auto live load combination.
Remaining Area for UDL Load : Select lanes where UDL of 5 kN/m2 is applied. Once ALL model 1 is defined in the Vehicle dialog box, it is not necessary to define any vehicle corresponding to UDL which will automatically be applied to the lanes selected as remaining area.
- CS 454 Assessment (ALL Model 2, Special Load)
Auto Live Load Combination
Check on to automatically apply partial factors (gamma_fl) for the combined ALL model 2 and special vehicle.
Check off to get assessment results (adequacy factor, reserve factor) for the special vehicle alone. The appropriate partial factor for live load can be applied in the 'Rating>Load Combination for Assessment' menu.
Type of Design Combination Factor
Select a limit state to determine partial factors to be applied to the live loads.
Ultimate Limit State : Applies the load factor at ultimate limit state
Serviceability Limit State : Applies the load factor at serviceability limit state
Combination of Loads
Select a combination to determine partial factors to be applied to the live loads.
Combination 1 : Applies the load factor for combination 1
Combination 2 or 3 : Applies the load factor for combination 2 or 3
Assignment Lanes
Select lanes to be applied to find the most unfavorable effect.
Selected Lanes: Select lanes where ALL model 2 is applied.
Straddling Lanes: Select two lanes where a special vehicle straddles within the two lanes. When more than one set of straddling lanes are selected, the program finds only one set of straddling lanes which will give the worst effect. The 'Straddling' option is only activated for the auto live load combination.
When ‘Moving Load Optimization’ is selected:
Optimization
Min. Vehicle Distance
Enter the minimum vehicle distance in the transverse direction. The minimum distance between vehicles is determined as the larger between ‘Min. Vehicle Distance’ and ‘2 times margin’ entered from the ‘Moving Load Optimization’ dialog. For HB loads and special vehicles, only one vehicle is applied on the carriageway at the same time. Thus, 0 m is recommended for HA loads as per BS.
Load Case Data
Loaded Lane
Select a carriageway defined in the ‘Moving Load Optimization’ dialog.
Number of Loaded Lanes
Enter the number of lanes to apply for Moving Load Cases.
Assignment Vehicle
Selected Vehicle : Select a vehicle to be applied for the moving load optimization.
Scale Factor : Scale factor for vehicle loads
Example 1 : To find the critical results for the combined HA and AB.
Example 2 : To find the critical results for the combined ALL Model 1 and HB.
Optimization with ALL model 1
Optimization with ALL model 1 is not fully automatic. The location of remaining area should be defined by the user and the optimization will be performed for the area left. Here are the recommended steps to follow:
1. Create moving load case 1 (without optimization) for remaining area only.
2. Create moving load case 2 (with optimization) for the optimization area.
3. Combine two moving load cases using load combination.
- When EUROCODE is selected from Moving Load Code
Load Case Name
Enter the name of a moving load case.
Description
Enter the description of the moving load case.
Load Model
When Vehicle is LM 1, FLM 1/ Footbridge
- When Vehicle is LM 1, FLM 1/ Footbridge
Load Case Data
Vehicle : Select the vehicle to be used. The user can only choose Load Model 1 or FLM 1.
Footway: Select the Footway uniform load to be used. The footway load can be specified in Load tab > Moving Load > Vehicles > Add Standard > EN 1991-2:2003 Footway and FootBridge > Uniform load (Road bridge footway).
Ignore ψ Factor
Check on to neglect ψ factor. If the traffic load is considered as Leading Variable Action in the load combination as per Eurocode 0, the moving load case for which the Ignore ψ factor option is checked on will be used. In this case, the ψ factor entered for the vehicle used in the corresponding load case will not be used. (That is ψ factor is considered as 1.)
Assignment Lanes
List of Lanes : Display the list of defined lanes.
Selected Lanes : Select the lane to be loaded by the vehicle load.
Footway Lanes : Select the lane to be loaded by the footway uniform load.
Remaining Area : Select the lane to be used as the Remaining Area as set forth in Eurocode.
- When Vehicle is LM 2,3,4 / FLM 2,3,4 / Footbridge / Permit Truck
Vehicle
Select the vehicle to be used. The user can only choose Load Model 1 or FLM 1.
Ignore ψ Factor
Check on to neglect ψ factor. If the traffic load is considered as Leading Variable Action in the load combination as per Eurocode 0, the moving load case for which the Ignore ψ factor option is checked on will be used. In this case, the ψ factor entered for the vehicle used in the corresponding load case will not be used. (That is ψ factor is considered as 1.)
Sub-Load Cases
Enter the loading method and the traffic lane to be loaded by the vehicle load class in a moving load case.
Loading Effect : Assign the method of combining vehicle loading conditions.
Combined : If more than two vehicle classes are assigned in a Sub-Load Case, then this function considers all combinations, including the cases where different vehicle classes are applied simultaneously.
Independent : Apply the vehicle classes independently. If more than two vehicle classes are assigned in a Sub-Load Case, then this function does not consider the cases where different vehicle classes are applied simultaneously.
To enter a new or additional vehicle load class, click the Add button and enter the following data.
To modify previously entered vehicle load cases, select the vehicle load case to be modified in the dialog box and click the Modify button.
To delete previously entered vehicle load cases, select the vehicle load case to be deleted in the dialog box and click the Delete button.
Load Cases Data
Vehicle Class : Select the vehicle load class.
Min. Number of Loaded Lanes : Enter the minimum number of lanes to be loaded by the vehicle load class.
Max. Number of Loaded Lanes : Enter the maximum number of lanes to be loaded by the vehicle load class.
Assignment Lanes
Select the lanes to be loaded by the vehicle load class.
List of Lanes : Display the list of defined lanes.
Selected Lanes : Select the lane to be loaded by the vehicle load.
Assign the lanes to be loaded by the vehicle load class in the List of Lanes with the mouse and click to select. If previously selected lanes are to be removed from the selection, assign the lanes with the mouse and click
to delete.
-When Vehicle is LM1 & 3 Multi
This load case considers the combined placement of Load Model 1 vehicle and Load Model3 vehicle. The simultaneous placement of LM1 and LM3 vehicles is done with the clearance prescribed in the Eurocode and is shown below: These LM3 vehicles cannot straddle between the lanes so only the longitudinal clearance in a particular lane is taken care of in this load case.
Simultaneous placement of LM1 and Standard LM3 special vehicles
Ignore ψ Factor
Check on to neglect ψ factor. If the traffic load is considered as Leading Variable Action in the load combination as per Eurocode 0, the moving load case for which the Ignore ψ factor option is checked on will be used. In this case, the ψ factor entered for the vehicle used in the corresponding load case will not be used. (That is ψ factor is considered as 1.)
Vehicle
LM1 : Only Load Model 1 can be selected.
LM3 : Only the Standard Load Model 3 can be selected.
Assignment Lanes
List of Lanes : Display the list of defined lanes.
Selected Lanes : Select the lane to be loaded by the vehicle load.
Remaining Area : Select the lane to be used as the Remaining Area as set forth in Eurocode.
- When Vehicle is LM1 & 3 Multi (Straddling)
Selecting the Load model:-LM1 and Special multi, a load combination corresponding to the Load Model 1 and LM3(Special) is defined. These straddling vehicles have been discussed in Eurocode vehicles in EN 1991-2:2003 - Road Bridges as Load model3 Special vehicles. This load Model will consider the combined effect of LM1 and Special LM3 vehicles in which the LM3 vehicle can straddle between the lanes with a defined longitudinal spacing from the LM1 vehicles as shown below.The longitudinal placement is taken care of in the program. The transverse clearance of the straddling vehicle from the kerbs should be taken care of manually by the user.
Longitudinal placement of LM1 and LM3(SV/SOV)
Transverse placement of LM1 and LM3(SV/SOV)
The details of the input data is described below:
Ignore ψ Factor
Check on to neglect ψ factor. If the traffic load is considered as Leading Variable Action in the load combination as per Eurocode 0, the moving load case for which the Ignore ψ option is checked on will be used. But if the traffic load is considered as Accompanying Variable in the load combination then the Load case corresponding to the one in which ψ is not ignored will be considered. To have all the required load combinations as per Eurocode 0, both the load cases should be made. The value of ψ is input in the definition of the vehicles.
Load Case Data
LM1 :Here only LM1 can be selected which will be placed along with the straddling vehicle.
LM3(Special) :Here only the straddling vehicles( LM3 SV/SOV) can be selected. The non-straddling LM3 vehicles can not be selected here.
Assignment Lanes
List of Lanes : All the lanes specified by the user in the model will be displayed here.
Selected Lanes : From the list of displayed lanes, using the lanes on which the vehicle load will be applied are selected.
Straddling Lanes : From the list of selected lanes, using the pair of lanes in which the LM3(SV/SOV) can straddle are specified.
Only adjacent lanes should be selected for a straddling lanes group. For accurate results one lane should be a part of one straddling lane group i.e. the lane composition for two straddling lane groups should be different.
Remaining Area : Select the lane to be used as the Remaining Area as set forth in Eurocode.
(1)
In the program the straddling nature of the vehicle is considered by different horizontal placements of Straddling vehicle on the two lanes which have been defined in the straddling lanes group and the placement giving the maximum effect is displayed. In the program several lanes are defined in the combined width of two lanes. The image below shows the centre lines of the lanes being considered for the straddling vehicle placement on one side of the centre line of combined width of two lanes.
Placement of vehicle in two lanes
In the image above the vehicle can straddle in adjacent Lane A and Lane B. The bold black lines represent the wheel spacing edges for Lane A and Lane B. The different lanes considered for the placement of the vehicle are
Centre line of Lane A is donated as Lane1 CL.
Lane 2 CL : Centre line of Lane 2 is at the centre line of combined width of Lane A and Lane B
Lane 3 CL : Centre line of Lane 3 is midway between the Lane 1CL and Lane 2 CL
Lane 4 CL : Centre line of Lane 4 is located midway between the Lane 1 CL and Lane 3 CL.
Similarly the lanes definition is considered on the other side of the center line of the combined width of the two lanes i.e. Lane 2 CL.
(2)
When the straddling vehicle placement is visualized using the Moving Load Tracer, the transverse wheel spacing is same as defined in the lanes definition. But this is not the actual transverse wheel spacing corresponding to the straddling vehicles. The transverse wheel spacing for straddling SV and SOV as defined in UK National Annex is shown below:
The transverse wheel spacing for LM3 SV 100(same for other SVs ): 2.65m centre-centre.
The transverse wheel spacing for LM3 SOV vehicles.
On conversion of a vehicle placement in Moving Load Tracer to a static vehicle placement using Write Min/Max Load to File in moving Load tracer( refer to Moving Load Tracer), the vehicle with the above shown transverse spacings can be considered.
- When Vehicle is Railway Bridge
Define Moving Load Case dialog box (when Railway bridge is selected)
Ignore ψ1 Factor
The combination factor, psi1 can be considered in the moving load analysis by checking off the Ignore psi1 Factor option as the values of psi1 factor depend on the number of loaded lanes. In case this option is checked on, the psi1 factor will not be applied to the moving load analysis, which means that psi1 factor is considered as 1.
The psi1 factor can take value as 0.8 or 0.7 or 0.6 depending on the number of loaded lanes. For the number of loaded lanes greater than 3, a value of psi1 - 0.6 is applied. The psi1 value is reflected on the vehicle loads while the psi0 value is reflected when the load combinations are generated using Auto Generation function (Refer to Combinations for more details on the combination generation).
Multiple Presence Factor
Enter the scale factors for multi-lane vehicle loads. This factor will be applied for the LM71 and SW/0 rail models depending on the number of loaded lanes.
For the determination of the most adverse load effects from the application of Load Model LM71 and SW/0, these load models shall be applied to any one track, any two tracks or 0.75 times the load model to three or more tracks.
Sub-Load Cases
Enter the loading method and the traffic lanes to be loaded by the vehicle load class in a moving load case.
Loading Effect : Assign the method of combining vehicle loading conditions.
Combined : If more than one vehicles are assigned in the Sub-Load Cases, then this function considers all combinations, including the cases where different vehicles are applied simultaneously.
Independent : Apply the vehicles independently. If more than two vehicles are assigned in the Sub-Load Cases, then this function does not consider the cases where different vehicles are applied simultaneously.
To enter a new or additional vehicle load class, click the Add button and enter the following data.
To modify previously entered vehicle load cases, select the vehicle load case to be modified in the dialog box and click the Modify button.
To delete previously entered vehicle load cases, select the vehicle load case to be deleted in the dialog box and click the Delete button.
Load Cases Data
Vehicle : Select the vehicle load class.
Min. Number of Loaded Lanes : Enter the minimum number of lanes to be loaded by the vehicle load class.
Max. Number of Loaded Lanes : Enter the maximum number of lanes to be loaded by the vehicle load class.
Assignment Lanes
Select the lanes to be loaded by the vehicle load class.
List of Lanes : Display the list of defined lanes.
Selected Lanes : Select the lane to be loaded by the vehicle load.
Assign the lanes to be loaded by the vehicle load class in the List of Lanes with the mouse and click to select. If previously selected lanes are to be removed from the selection, assign the lanes with the mouse and click to delete.
When 'Moving Load Optimization' is selected:
Ignoreψ Factor
Check on to neglect ψ factor. If the traffic load is considered as Leading Variable Action in the load combination as per Eurocode 0, the moving load case for which the Ignore ψ option is checked on will be used. But if the traffic load is considered as Accompanying Variable in the load combination then the Load case corresponding to the one in which ψ is not ignored will be considered. To have all the required load combinations as per Eurocode 0, both the load cases should be made. The value of ψ is input in the definition of the vehicles.
Load Case Data
LM1 : Here only LM1 can be selected which will be placed along with the straddling vehicle.
LM3 (Special) : Here only the straddling vehicles (LM3 SV/SOV) can be selected. The non-straddling LM3 vehicles cannot be selected here.
Optimization
Min. Vehicle Distance
Enter the minimum vehicle distance in the transverse direction. The minimum distance between vehicles is determined as the larger between ‘Min. Vehicle Distance’ and ‘2 times margin’ entered from the ‘Moving Load Optimization’ dialog. For LM3 or special vehicles, only one vehicle is applied on the carriageway at the same time. Thus, 1 m is recommended for LM1 loads as per Eurocode.
Assignment Lanes
Loaded Lane
Select a carriageway defined in the ‘Moving Load Optimization’ dialog.
Num. of Loaded Lanes
Enter the number of lanes to apply for Moving Load Cases.
Assignment Vehicle
Selected Vehicle : Select a vehicle to be applied for the moving load optimization.
Scale Factor : Scale factor for vehicle loads
In Civil 2018 (v1.1), the remaining area for LM1 vehicle is not included in the moving load optimization. For now, it is recommended to define a lane separately for the remaining area and locate it on the carriageway and select the lane into the ‘Remaining Area’ box. This will be improved in a future release.
Example: To find the critical results for the combined LM 1 and LM 3 (Special vehicle).
- When Australia is selected from Moving Load Cod
Load Case Name
Accompanying Lane Factor
Enter the scale factors for multi-lane vehicle loads. If more than one lane is loaded, the A160, M1600, S1600 or M1600 tri-axle load applied to the additional lanes will be multiplied by the accompanying lane factors.
AS5100.2 specifies 1.0 for the loaded lane giving the largest effect, 0.8 for the loaded lane giving the second largest effect, 0.4 for the loaded lane giving the third largest effect.
Sub-Load Cases
Enter the loading method and the traffic lane to be loaded by the vehicle load class in a moving load case.
Loading Effect
Assign the method of combining vehicle loading conditions.
Combined : Combination of vehicle classes. If more than two vehicle classes are assigned in a Moving Load Case, then this function considers all combinations, including the cases where different vehicle classes are applied simultaneously.
Independent : Apply the vehicle classes independently. If more than two vehicle classes are assigned in a Moving Load Case, then this function do not consider the cases where different vehicle classes are applied simultaneously.
When 'Independent' is selected, we can check the envelope results for each vehicle class. When 'Combined' is selected, we can check the envelope results for the combinations of each vehicle class.
- To enter new or additional vehicle load class
Click the Add button.
- To modify previously entered vehicle load cases
Select the vehicle load case to be modified in the dialog box and click the Modify button.
- To delete previously entered vehicle load cases
Select the vehicle load cases to be deleted in the dialog box and click the Delete button.
- Data entry method when the Add button is clicked.
Load Case Data
Vehicle Class
Select the vehicle load class or directly enter the vehicle load.
Scale Factor
Enter the scale factor for the application of the vehicle load class.
Min. Number of Loaded Lanes
Enter the minimum number of lanes to be loaded by the vehicle load class.
Max. Number of Loaded Lanes
Enter the maximum number of lanes to be loaded by the vehicle load class.
The maximum and minimum numbers of loaded lanes must be smaller than the number of selected lanes.
Assign Lanes
Select the lanes to be loaded by the vehicle load class.
Assign the lanes to be loaded by the vehicle load class in the traffic lane list with the mouse and click to select. If previously selected lanes are to be removed from the selection, assign the lanes with the mouse and click
to delete.
The number of lanes selected to be loaded is limited to 10.
2) When Heavy Load Platform is selected:
Type of Load Factor for Design Combination
Load factors for design road traffic loads specified in AS 51000.2 will be applied to each loading. Thus, load factors should be entered as 1.0 for the moving load case in the load combination.
Ultimate Limit State : Moving load analysis results will be multiplied by load factors as follows.
Heavy Load Platform (HLP): 1.5
Half of SM1600 traffic load in unobstructed lanes when applied in conjunction with HLP loading: 1.8
Serviceability Limit State : Moving load analysis results will be multiplied by load factors as follows.
Heavy Load Platform (HLP): 1.0
Half of SM1600 traffic load in unobstructed lanes when applied in conjunction with HLP loading: 1.0
Unobstructed Lane Scale Factor
For bridges with three or more standard design lanes, the unobstructed standard design lanes will be loaded with half of either M1600 moving traffic load or the S1600 stationary traffic load to create the worst effect.
Load Case Data
Heavy Load : Select Heavy Load Platform.
M1600 or S1600 : Select M1600 or S1600 or None. If None is selected, only Heavy Load Platform will be applied.
Assignment Lanes
Min. Number of Loaded Lanes : Enter minimum number of lanes loaded M1600 or S1600.
Max. Number of Loaded Lanes : Enter maximum number of lanes loaded M1600 or S1600.
List of Lanes : Display all the lanes defined.
Selected Lanes : Select the lanes on which M1600 or S1600 will be applied.
Heavy Load Lanes : Select the two adjacent lanes on which Heavy Load Platform will be applied.
The HLP 320 and HLP 400 heavy load platform shall be positioned within two standard design lanes. The Heavy Load Platform shall be positioned up to 1.0 m laterally from the center of two standard design lanes to create the worst effect. Note that these two lanes should be adjacent and the two lanes should not be away from each other. The two adjacent lanes should meet each other at the boundary lines of the lane width.
3) When Rail Traffic Load is selected:
Multiple Track Factor
When loading a number of tracks simultaneously, the multiple track factors shall be used. Enter the multiple track factors.
Sub-Load Cases
Enter the loading method and the traffic lane to be loaded by the vehicle load class in a moving load case.
Loading Effect
Assign the method of combining vehicle loading conditions.
Combined : Combination of vehicle classes. If more than two vehicle classes are assigned in a Moving Load Case, then this function considers all combinations, including the cases where different vehicle classes are applied simultaneously.
Independent : Apply the vehicle classes independently. If more than two vehicle classes are assigned in a Moving Load Case, then this function do not consider the cases where different vehicle classes are applied simultaneously.
When 'Independent' is selected, we can check the envelope results for each vehicle class. When 'Combined' is selected, we can check the envelope results for the combinations of each vehicle class.
4) When ‘Load Case for Permit Vehicle’ is selected:
Load Case for Permit Vehicle
Select this option if Permit Vehicle is defined from User Define Vehicles. When this option is selected the dialog box changes to a number of input fields for Permit Vehicle.
Permit Vehicle
Vehicle
Choose the vehicle to be used. The user can only choose the vehicle that has been defined as Permit Vehicle Type.
Ref. Lane
Select the reference lane to provide the location where Permit Vehicle travels.
Eccentricity
Input the distance of the Permit Vehicle to the Ref. Lane. By looking towards the direction the vehicle travels, the right side is considered positive and the left side is considered negative.
Scale factor
Enter the scale factor for the application of the vehicle loads.
5) When ‘Moving Load Optimization’ is selected:
Optimization
Min. Vehicle Distance
Enter the minimum vehicle distance in the transverse direction. The minimum distance between vehicles is determined as the larger between ‘Min. Vehicle Distance’ and ‘2 times margin’ entered from the ‘Moving Load Optimization’ dialog.
Load Case Data
Loaded Lane
Select a carriageway defined in the ‘Moving Load Optimization’ dialog.
Min. Number of Vehicles
Enter minimum number of vehicles to be loaded within the carriageway width.
Max. Number of Vehicles
Enter maximum number of vehicles to be loaded within the carriageway width.
Loading Effect
Assign the method of combining vehicle loading conditions.
Combined : Combination of vehicles. If more than two vehicles are assigned in a Moving Load Case, then this function considers all combinations, including the cases where different vehicles are applied simultaneously.
Independent : Apply the vehicles independently. If more than two vehicles are assigned in a Moving Load Case, then this function does not consider the cases where different vehicles are applied simultaneously.
Assignment Vehicle
Selected Vehicle: Select a vehicle to be applied for the moving load optimization.
Scale Factor : Scale factor for vehicle loads
- When India is selected from Moving Load Code
Load Case Name
Enter the name of a moving load case.
Description
Enter the description of the moving load case.
Auto Live Load Combination
Check on this option to define the Live Load Combinations according to the clause 207.4. of IRC: 6-2000. Check off this option for a user-defined Live Load Combination.
Multiple Presence Factor
Enter the scale factors for multi-lane vehicle loads.
Number of Loaded Lane
Enter the number of lanes to be loaded by the vehicle load class. This option will be activated only when Auto Love Load Combination option is selected.
Sub-Load Cases
• When Auto Live Load Combination is selected
(When the Number of Loaded Lanes is '1')
Scale factor
Enter the scale factor for the application of the vehicle loads.
Number of Loaded Lanes
Vehicle Class Selection
-Class I : The user can select either Class A, Class B or user-defined wheeled vehicles.
Footway Loading
Enter the load which will be applied to the remaining width of the carriageway when the number of oaded lanes is 1.
(When the Number of Loaded Lanes is more then '2')
Scale factor
Enter the scale factor for the application of the vehicle loads.
Number of Loaded Lanes
Vehicle Class Selection
-Class I : The user can select either Class A, Class B or user-defined wheeled vehicles.
-Class II : The user can select either Class AA, Class 70R, Class 40R or user-defined heeled/tracked/bogie vehicles.
• When Auto Live Load Combination is not selected
Scale Factor
Enter the scale factor for the application of the vehicle load class.
Min. Number of Loaded Lanes : Enter the minimum number of lanes to be loaded by the vehicle loading.
Max. Number of Loaded Lanes : Enter the maximum number of lanes to be loaded by the vehicle loading.
Vehicle: All of the defined vehicles can be selected.
If more than two vehicle classes are assigned in a Sub-Load Case, then this function considers all combinations, including the cases where different vehicle classes are applied simultaneously.
• Load Case for Permit Vehicle
Select this option if Permit Vehicle is defined. When this option is selected the dialog box is changed to a number of input fields for Permit Vehicle.
Vehicle
Choose the vehicle to be used. The user can only choose the vehicle that has been defined as Permit Vehicle Type.
Ref. Lane
Select the reference lane to provide the location where Permit Vehicle travels.
Eccentricity
Input the distance of the Permit Vehicle to the Ref. Lane. By looking towards the direction the vehicle travels, the right side is considered positive and the left side is considered negative.
Scale factor
Enter the scale factor for the application of the vehicle loads.
- To enter new or additional vehicle load class
Click the Add button.
- To modify previously entered vehicle load cases
Select the vehicle load case to be modified in the dialog box and click the Modify button.
- To delete previously entered vehicle load cases
Select the vehicle load cases to be deleted in the dialog box and click the Delete button.
- When Russia is selected from Moving Load Code
Load Case Name
Enter the name of a moving load case.
Description
Enter the description of the moving load case.
Sub-Load Cases
Enter the loading method and the traffic lane to be loaded by the vehicle load class in a moving load case.
Loading Effect
Assign the method of combining vehicle loading conditions.
Combined : Combination of vehicle classes. If more than two vehicle classes are assigned in a Moving Load Case, then this function considers all combinations, including the cases where different vehicle classes are applied simultaneously.
Independent : Apply the vehicle classes independently. If more than two vehicle classes are assigned in a Moving Load Case, then this function do not consider the cases where different vehicle classes are applied simultaneously.
When 'Independent' is selected, we can check the envelope results for each vehicle class. When 'Combined' is selected, we can check the envelope results for the combinations of each vehicle class.
- To enter new or additional vehicle load class,
click the Add button.
- To modify previously entered vehicle load cases,
select the vehicle load case to be modified in the dialog box and click the Modify button.
- To delete previously entered vehicle load cases,
select the vehicle load cases to be deleted in the dialog box and click the Delete button.
- Data entry method when the Add button is clicked.
Load Case Data
Vehicle Class
Select the vehicle load class or directly enter the vehicle load.
Scale Factor
Enter the scale factor for the application of the vehicle load class.
Min. Number of Loaded Lanes
Enter the minimum number of lanes to be loaded by the vehicle load class.
Max. Number of Loaded Lanes
Enter the maximum number of lanes to be loaded by the vehicle load class.
The maximum and minimum numbers of loaded lanes must be smaller than the number of selected lanes.
Assign Lanes
Select the lanes to be loaded by the vehicle load class.
Assign the lanes to be loaded by the vehicle load class in the traffic lane list with the mouse and click to select. If previously selected lanes are to be removed from the selection, assign the lanes with the mouse and click
to delete.
The number of lanes selected to be loaded is limited to 20.
- When Poland is selected from Moving Load Code
Load Case Name
Enter the moving load case name.
Description
Enter the description of the moving load case
Select Load Model
Select one of the vehicle type.
Vehicle S / Vehicle 2S / Permit Type
Vehicle K Type
Military Load Type
Sub-Load Cases
Enter the loading method and the traffic lane to be loaded by the vehicle load class in a moving load case.
Loading Effect : Assign the method of combining vehicle loading conditions.
Combined : If more than two vehicle classes are assigned in a Sub-Load Case, then this function considers all combinations, including the cases where different vehicle classes are applied simultaneously.
Independent : Apply the vehicle classes independently. If more than two vehicle classes are assigned in a Sub-Load Case, then this function does not consider the cases where different vehicle classes are applied simultaneously.
To enter a new or additional vehicle load class, click the Add button and enter the following data.
To modify previously entered vehicle load cases, select the vehicle load case to be modified in the dialog box and click the Modify button.
To delete previously entered vehicle load cases, select the vehicle load case to be deleted in the dialog box and click the Delete button.
Load Cases Data
Vehicle Class : Select the vehicle load class.
Min. Number of Loaded Lanes : Enter the minimum number of lanes to be loaded by the vehicle load class.
Max. Number of Loaded Lanes : Enter the maximum number of lanes to be loaded by the vehicle load class.
Assignment Lanes
Select the lanes to be loaded by the vehicle load class.
List of Lanes : Display the list of defined lanes.
Selected Lanes : Select the lane to be loaded by the vehicle load.
Assign the lanes to be loaded by the vehicle load class in the List of Lanes with the mouse and click to select. If previously selected lanes are to be removed from the selection, assign the lanes with the mouse and click
to delete.
When ‘Load Case for Permit Vehicle’ is selected:
Load Case for Permit Vehicle
Select this option if Permit Vehicle is defined from User Define option. When this option is selected the dialog box changes to a number of input fields for Permit Vehicle.
Vehicle
Choose the vehicle to be used. The user can only choose the vehicle that has been defined as Permit Vehicle Type.
Ref. Lane
Select the reference lane to provide the location where Permit Vehicle travels.
Eccentricity
Input the distance of the Permit Vehicle to the Ref. Lane. By looking towards the direction the vehicle travels, the right side is considered positive and the left side is considered negative.
Scale factor
Enter the scale factor for the application of the vehicle loads.
When ‘Moving Load Optimization’ is selected:
Optimization
Min. Vehicle Distance
Enter the minimum vehicle distance in the transverse direction. The minimum distance between vehicles is determined as the larger between ‘Min. Vehicle Distance’ and ‘2 times margin’ entered from the ‘Moving Load Optimization’ dialog.
Load Case Data
Loaded Lane
Select a carriageway defined in the ‘Moving Load Optimization’ dialog.
Min. Number of Vehicles
Enter minimum number of vehicles to be loaded within the carriageway width.
Max. Number of Vehicles
Enter maximum number of vehicles to be loaded within the carriageway width.
Loading Effect
Assign the method of combining vehicle loading conditions.
Combined: Combination of vehicles. If more than two vehicles are assigned in a Moving Load Case, then this function considers all combinations, including the cases where different vehicles are applied simultaneously.
Independent: Apply the vehicles independently. If more than two vehicles are assigned in a Moving Load Case, then this function does not consider the cases where different vehicles are applied simultaneously.
Assignment Vehicle
Selected Vehicle: Select a vehicle to be applied for the moving load optimization.
Scale Factor: Scale factor for vehicle loads
- When South Africa is selected from Moving Load Code
NA/NB/NC Type
Load Case Data
Select a corresponding vehicle defined in Vehicles option.
Assignment Lanes
Assign the selected vehicles to lanes
List of Lanes : Displays the list of lanes
Selected Lanes : Select the lane
NC + 2/3 NA Type
Load Case Data
Select a corresponding NC and NA vehicle defined in Vehicles option.
Assignment Lanes
Assign the selected vehicles to lanes
List of Lanes : Displays the list of lanes
NC Lanes : Select the lane for NC vehicle
NA Lanes : Select the lane for NA vehicle
User Defined (Sub-Load Cases)
Enter the loading method and the traffic lane to be loaded by the vehicle load class in a moving load case.
Loading Effect
Assign the method of combining vehicle loading conditions.
Combined : Combination of vehicle classes. If more than two vehicle classes are assigned in a Moving Load Case, then this function considers all combinations, including the cases where different vehicle classes are applied simultaneously.
Independent : Apply the vehicle classes independently. If more than two vehicle classes are assigned in a Moving Load Case, then this function do not consider the cases where different vehicle classes are applied simultaneously.
When 'Independent' is selected, we can check the envelope results for each vehicle class. When 'Combined' is selected, we can check the envelope results for the combinations of each vehicle class.
Moving Load Optimization
Moving Load Optimization is only applicable for NA, NB and User Defined vehicles.
Each vehicle type acts individually (i.e., NA, NB and NC can’t act together). NA can be applied to multiple notional lanes at the same time but NB and NC loads could be applied to only one lane at a time in the carriageway.
- When France is selected from Moving Load Code
Load Case Name
Enter the moving load case name.
Description
Enter the description of the moving load case
Select Load Model
Select one of the vehicle types.
Load System A
Load System Bc
Load System Bt
Military Load
Pedestrian
Sub-Load Cases
Enter the loading method and the traffic lane to be loaded by the vehicle in a moving load case.
To enter new or additional vehicle load class, click the Add button and enter the following data.
To modify previously entered vehicle load cases, select the vehicle load case to be modified in the dialog box and click the Modify button.
To delete previously entered vehicle load cases, select the vehicle load case to be deleted in the dialog box and click the Delete button.
Vehicle Lanes
Vehicle : Select the vehicle and the lane to be loaded by the vehicle.
List of Lanes : Display the list of defined lanes.
Selected Lane : Select the lane to be loaded by the vehicle.
Centrifugal Effect : Load System Bc only.
Centrifugal force acting on the bridge deck has two effects, i.e. overturning moment, lateral skidding force. In midas Civil, the overturning effect can only be simulated with the force couple. The wheel of the same axle placed on the outer side of the curve is assumed to undergo a relative increase in weight equal to the fraction entered by the user and the inner wheel an equal reduction.
Vertical Load Only : The results of the moving load case include the effects of the vertical load only. It does not include the effects of centrifugal forces.
Centrifugal Load Only : The results of the moving load case include only the effects of the centrifugal forces.
Both : The results of the moving load case include the effects of both the vertical load and the centrifugal forces.
Sidewalk Lanes
Sidewalk : Select the sidewalk load and the lanes to be loaded by the sidewalk load.
List of Lanes : Display the list of defined lanes.
Selected Lanes : Select the lanes to be loaded by the sidewalk load.
Assign the lanes to be loaded by the sidewalk load in the List of Lanes with the mouse and click to select. If previously selected lanes are to be removed from the selection, assign the lanes with the mouse and click
to remove.
When ‘Pedestrian’ is selected:
Pedestrian Lanes
Pedestrian : Select the pedestrian load and the lanes to be loaded by the pedestrian load.
List of Lanes : Display the list of defined lanes.
Selected Lanes : Select the lanes to be loaded by the pedestrian load.
- When Transverse is selected from the Moving Load Code
Load Case Name
Enter the name of a moving load case.
Description
Enter the description of the moving load case.
Vehicle
Select the vehicle for analysis. In case of inputting a vehicle that has not been defined, click on [...] tab and define any vehicle load.
Scale Factor
Enter the scale factor for the application of the vehicle load class.
Line Lane
Select the lane to be analyzed.
Multiple Presence Factor
Enter the scale factors for multi-lane vehicle loads.