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titleLive Load Case
Live Load Case (Highway) [SIG]
Proceed to the next step to verify the model.
1

(blue star) 🖱️ Click the three-dots icon on the Influence Surface cell, and then set ISGravity.

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2

(blue star) 🖱️ Keep the Influence Surface 2, Influence Surface 3, Influence Surface 4 and Max for Stress Range as default.

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3

(blue star) 🖱️ Click three-dots icon on Multiple Presence Factor and click Edit.

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4

(blue star) 🖱️ 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

(blue star) 🖱️ Keep the Maximum Number of Lanes as default.

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6

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

(blue star) 🖱️ Click three-dots icon on Design Lane Option 1 cells and select a Design Lane as HL93TwoTrucksAndLane 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.

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7

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_Quick Tips
_Quick Tips
nameImportDesignLane
nopaneltrue

8

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

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9

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

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10

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

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11

🖱️ Set name as LLHL93Case.

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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.

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_Quick Tips
_Quick Tips
nameCopyPasteInputs
nopaneltrue

Live Load Case

General

Code Block
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

Code Block
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

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Tip

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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Tip

To view the entire procedure explained on this page, please watch the recorded Video below.

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