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After clicking on ‘Loading> Loads> Wind Load> Wind Load on Structure> WS AASHTO' in the navigation treeview, follow the steps to define the Wind Load on Structure. You can use the collapsed documentation page below for more information on the explanations of each parameter.

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titleWind Load on Structure
WS AASHTO [SIG]
1

🖱️ Click three-dots icon on Stage cell and select a Construction Stage as WSStage.

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2

🖱️ Keep the Span Height Variation as default.

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3

🖱️ Click three-dots icon on Structural Objects and Pressure Parameters cell and Edit.

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4

🖱️ Click three-dots on the cell of the Applied Elements and pick the element BR1.

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5

🖱️ Click the three-dots icon on the Wind Direction cell, and then set Left to Right.

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6

🖱️Enter the Structural Height from Ground Line as 52.

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7

🖱️ Keep the Gust Effect Factor parameters as default.

The gust effect factor value is specified in AASHTO Table 3.8.1.2.1-1. To determine these values, you can refer to the quick tip below.

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8

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nameGust Effect Factor
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9

🖱️ Keep the Drag Coefficient as default.

The drag coefficient value is specified in AASHTO Table 3.8.1.2.1-2. To determine this value, you can refer to the quick tip below.

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10

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🖱️ Please enter the following values sequentially:
2nd row - Applied Elements: BR2 Wind Direction: Right to Left Structural Height from Line: 52 Gust Effect Factors: 1 Drag Coefficient: 1.3
3rd row - Applied Elements: G1 Wind Direction: Left to Right Structural Height from Line: 49 Gust Effect Factors: 1 Drag Coefficient: 1.3
4th row - Applied Elements: G4 Wind Direction: Right to Left Structural Height from Line: 49 Gust Effect Factors: 1 Drag Coefficient: 1.3
5th row - Applied Elements: PierCap1 Wind Direction: Both Direction Structural Height from Line: 41 Gust Effect Factors: 1 Drag Coefficient: 1.6
6th row - Applied Elements: PierCap2 Wind Direction: Both Direction Structural Height from Line: 41 Gust Effect Factors: 1 Drag Coefficient: 1.6
7th row - Applied Elements: PierColumn4 Wind Direction: Left to Right Structural Height from Line: 33 Gust Effect Factors: 1 Drag Coefficient: 2
8th row - Applied Elements: PierColumn1 Wind Direction: Right to Left Structural Height from Line: 33 Gust Effect Factors: 1 Drag Coefficient: 2
9th row - Applied Elements: PierColumn5 Wind Direction: Both Direction Structural Height from Line: 33 Gust Effect Factors: 1 Drag Coefficient: 2

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12

🖱️ Keep the Substructure Objects and Pressure Parameters and Superstructure Objects and Pressure Parameters as default.

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13

🖱️ Keep the Strength III Design Wind Speed as default.

The strength III design wind speed value is specified in AASHTO Figure 3.8.1.1.2-1. To determine this value, you can refer to the quick tip below.

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14

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nameStrength III Design Wind Speed
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15

🖱️ Keep the Surface Roughness as default.

The surface roughness value is specified in AASHTO 3.8.1.1.4 . To determine this value, you can refer to the quick tip below.

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17

image-20241003-115707.png Keep the Analysis Option as default.

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18

When the steps are completed, the shared screenshot displayed in the adjacent cell should be visible in the FEA view of OpenBrIM.

You can refer to the Quick Tip below to learn how the loading displayed in the screenshot is viewed.

19

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nameShowWindLoadonStructureFEA
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20

Proceed to the next step to verify the model.

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Tip

The completed wind load on structure is 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.

SIG EX1 WS AASHTO.mp4Image RemovedSIG EX1 WS AASHTO.mp4