Use the Vehicle Data - Vertical Loading form to specify the vertical loads associated with a defined vehicle.
Uniform Load Scale Factor edit box. Enter a scale factor to scale all the uniform load magnitudes specified in the Loads definition during analysis.
Axle Load Scale Factor edit box. Enter a scale factor to scale all the axle load magnitudes specified in the Loads definition during analysis.
Superelevation Effects checkbox and edit boxes. Check the box to modify the vertical loads to account for superelevation, resulting in an overturning moment. The axle and uniform load factors provide the ability to further scale these effects. Superelevation effects will only be included if both the vehicle and the lane have width. The overturning moment is represented as a moment-couple of vertical loads, and will be limited so as not to cause uplift on the uphill side of the vehicle.
Ignore Vehicle Loads If Horizontal Centrifugal or Braking Loads are Defined check box. When this box is checked, the vertical loads defined in this form will only be used to determine the horizontal centrifugal or braking/acceleration loads defined in the Vehicle Data - Horizontal Loading form. The vertical loads will otherwise not be considered.
Floating Axle Loads
Value edit boxes. Enter a total value for the floating axle load for Lane Moments or Other Responses or both.
Width Type drop-down lists. Select how the floating axle load is to be distributed.
Axle Width edit boxes. If the Width Type has been selected as something other than One Point or Lane Width Line, enter a value for the axle width in the current units.
Floating Axle Load Scale Factor edit box. Enter a scale factor to scale all floating axle load magnitudes during analysis.
Double the Lane Moment Load when Calculating Negative Span Moments check box. When this box is checked, the lane moment load will be doubled when calculating negative span moments Scale options and Velocity or Length edit box.
Loads
Load Length Type drop-down list. Use the drop-down list to select the type of load length (leading or trailing load or fixed or variable length).
Minimum and Maximum Distance edit boxes. Enter a minimum and maximum distance between the current and previous axle.
Uniform Load edit box. Enter uniform load values in load/length units.
Uniform Width Type drop-down list. Select the type of width for the uniform load.
Uniform Width edit box. If the Uniform Width Type has been selected as Fixed Width, enter a width for the uniform load in the current units.
Axle Load edit box. Enter an axle load in the edit box; this is the total load for the axle.
Axle Width Type drop-down box. Select how the axle load is to be distributed.
Axle Width edit box. If the Axle Width Type has been selected as something other than One Point or Lane Width Line, enter a value for the axle width in current units.
Add button. After the parameters in the Loads area of the form have been specified, click the Add button to add the parameters to the Vehicle definition.
Insert button. After the parameters in the Loads area of the form have been specified, click the Insert button to insert the parameters to the Vehicle definition above any selected parameters in the Loads display area.
Modify button. Select parameters in the Loads area of the form to be modified and use the drop-down lists and edit boxes to specify the modifications. Then click the Modify button to make the changes.
Delete button. Select the load definition in the Loads area of the form to be deleted. Then click the Delete button to delete the load definition.
To display the Vehicle Data-Vertical Loading form:
From the Vehicle Data form, click the Vertical Loading... button to access this form.
See Also