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Please follow the instructions provided below to add load combinations for Structure constructability limit state

1

This section aims to compile the limit states that were previously defined based on AASHTO guidelines. Each limit state input generates two core combination objects (Max/Min), and overall limit state envelopes are produced for strength, service, fatigue, and extreme event limit states. Additionally, you need to create three Load Combination Tables for the Substructure, Superstructure categories.

2

Navigate to Combinations > Design Load Combinations > Load Combination Table

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3

Enter the name in the Name column as follows:

  • SubstructureLCT

  • SuperstructureLCT

4

Click three-dots icon on StrengthI 1st Row Cell and click Select.

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5

Select StrengthI from the combobox.

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6

Select the suitable StrengthI options for SubstructureLCT and SuperstructureLCT based on the instructions provided in the previous step.

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7

In same way, keep selecting Limit States for the corresponding Load Combination Tables.

Limit States not included in this example should remain as NULL.

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1

Navigate to Load Combination Table under Design Load Combinations on the tree view.

2

Copy Params from model inputs and paste into OpenBrIM.

Tip

The Load Combination Table have been created using limit states.

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Load Combination Table

Params

Code Block
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StrengthI	NULL	StrengthIII	StrengthIV	StrengthV	NULL	ExtremeEventII	ServiceI	NULL	StrengthIII	ServiceIV	FatigueI	FatigueII
StrengthI	NULL	StrengthIII	StrengthIV	StrengthV	NULL	ExtremeEventII	ServiceI	NULL	StrengthIII	NULL	FatigueI	FatigueII