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Live Load Case [EX1-SIG]

Live Load Case [EX1-SIG]

After clicking on ‘Loading> Loads> Inf. Surf Based LL/BR/CE> Live Load Case' in the navigation treeview, follow the steps to define the Live Load Case. You can use the collapsed documentation page below for more information on the explanations of each parameter.

1

Click the three-dots icon on the Influence Surface cell, and then set ISGravity.

 

image-20240930-103620.png

 

2

Keep the Influence Surface 2, Influence Surface 3, Influence Surface 4 and Max for Stress Range as default.

 

image-20240930-103718.png

 

3

Click three-dots icon on Multiple Presence Factor and click Edit.

 

 

4

Please enter the following values sequentially:
1st row - Factor: 1.2
2nd row - Factor: 1
3rd row - Factor: 0.85
4th row - Factor: 0.65

 

5

Keep the Maximum Number of Lanes as default.

 

 

6

You can edit the Design Lanes of live load case from Design Lanes tab.

Click three-dots icon on Design Lane Option 1 cells and select a Design Lane as HL93AndLane_LL.

 

If you have reached this stage and you don't have a design lane to select, and if you want to use the Import Button, you can refer to the Quick Tip.

7

8

Click three-dots icon on Design Lane Option 2 cells and select a Design Lane as HL93TandemTruckAndLane_LL.

 

 

9

Click three-dots icon on Design Lane Option 3 cells and select a Design Lane as HL93TwoTrucksAndLane_LL.

 

 

10

Keep the Design Lane Option 4 and Magnification Factors tabs parameters as default.

 

 

 

11

Set name as LLHL93Case.

 

12

To model all the live load case, copy the data below and paste the parameters into the first cell in OpenBrIM spreadsheet. Refer to the quick tip for an easy guide on how to perform the copy operation. After completing the copy, proceed to the next step to verify the model.

Live Load Case

Live Load Case

General

LLHL93Case ISGravity NULL NULL NULL NO [1.2,1,0.85,0.65] No Limit LLFatCase ISGravity NULL NULL NULL YES [1] 1 Lane LLBrakingCase ISBraking NULL NULL NULL NO [1.2,1,0.85,0.65] No Limit LLCentCase ISCentr NULL NULL NULL NO [1.2,1,0.85,0.65] No Limit LLDefCase ISGravity NULL NULL NULL NO [1.2,1,0.85,0.65] No Limit

Design Lanes

LLHL93Case HL93AndLane_LL HL93TandemTruckAndLane_LL HL93TwoTrucksAndLane_LL NULL LLFatCase HL93_Fatigue NULL NULL NULL LLBrakingCase HL93_BR HL93AndLane_BR NULL NULL LLCentCase HL93_CE NULL NULL NULL LLDefCase HL93_Deflection HL93AndLane_Deflection NULL NULL

The completed live load cases are illustrated below. Please verify that you have the same model on your end by examining each view provided here. For more information on how to perform visual checks, refer to the quick tips.

 

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