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Please follow the instructions provided below to define the load cases (classes) combined with the load factors.

1

The purpose of this section is created to collect the load cases and their max/min load factors accordingly and collects the load modifiers of that limit state.
Each instance is a definition of a limit state combination.(Strength/Service/Fatigue/Extreme Event etc.)

2

3
4

Navigate to Combinations > Design Load Combinations > Limit States

5

Click three-dots icon on Name cell and click Import OBPAASHTOLimitState.

6

To import the "AASHTO 9th Edition Load Combination" data into the requested OpenBrIM core memory, simply choose it from the options in the combobox.

In this stage, ou need to define 18 load cases, which are classified into the following categories

7

For Substructure:

  • StrengthI_sub

  • StrengthIII_sub

  • StrengthV_sub

  • ServiceI_sub

  • ServiceII_sub

  • ServiceIII_sub

  • ServiceIV_sub

For Superstructure:

  • StrengthI_sup

  • StrengthIII_sup

  • StrengthV_sup

  • ServiceI_sup

  • ServiceII_sup

  • StrengthIV_sup

For Constructability

  • StrengthI_cons

  • StrengthIII_cons

  • StrengthV_cons

For Fatigue:

  • FatigueI

  • FatigueII

8

Navigate Load Cases 1 tab

At this point, you must assign the (unfactored load case) Result Extraction Cases (parameters) for the Limit States Components that were defined in the previous step.

9

Click three-dots icon on DC1 (Noncomposite Dead Load) cell and click Select.

Select DC1_Sub result extraction cases for “StrengthI_sub” as in the figure

Then enter γmax & γmin data.

10

In order to set DC1 for all limit states, you should perform steps 8 to 9 again.

11

In same way, keep selecting the load cases for the corresponding limit states

12

Load cases not included in this example should remain as NULL.

Follow the below steps to copy and paste all inputs from our data set.

1

Go to Limit States under Design Load Combinations on the tree view.

2

Copy Load Modifiers, Load Cases 1, Load Cases 2, and Load Cases 3 from model inputs and paste into OpenBrIM.

 Quick Tip: Copy inputs to OpenBrIM

Copy the desired data with the automatic copy button in the upper left corner.

Click on the first cell in and use the Ctrl+V shortcut to paste.

If icon won’t appear, collapse page tree menu by clicking on arrow or using shortcut “[”.

While pasting large data, it would be handy to turn of Auto-refresh .

Limit States

Load Modifiers

Load Cases 1

Load Cases 2

Load Cases 3

StrengthI_sub	1	1	1
StrengthIII_sub	1	1	1
StrengthV_sub	1	1	1
ServiceI_sub	1	1	1
ServiceII_sub	1	1	1
StrengthI_sup	1	1	1
StrengthIII_sup	1	1	1
StrengthV_sup	1	1	1
ServiceI_sup	1	1	1
ServiceII_sup	1	1	1
StrengthI_cons	1	1	1
StrengthIII_cons	1	1	1
StrengthV_cons	1	1	1
FatigueI	1	1	1
FatigueII	1	1	1
ServiceIII_sub	1	1	1
ServiceIV_sub	1	1	1
StrengthIV_sup	1	1	1
StrengthI_sub	DC1_Sub	1.25	0.9	DC2	1.25	0.9	DW	1.5	0.65	LLSub	1.75	1.75	BR	1.75	1.75	NULL	0	0	NULL	0	0	TU	0.5	0.5	Cent	1.75	1.75	NULL	1	1
StrengthIII_sub	DC1_Sub	1.25	0.9	DC2	1.25	0.9	DW	1.5	0.65	LLSub	0	0	BR	0	0	AASHTO Wind Cases Strength III	1	1	NULL	0	0	TU	0.5	0.5	Cent	0	0	NULL	1	1
StrengthV_sub	DC1_Sub	1.25	0.9	DC2	1.25	0.9	DW	1.5	0.65	LLSub	1.35	1.35	BR	1.35	1.35	AASHTO Wind Cases Strength V	1	1	NULL	1	1	TU	0.5	0.5	Cent	1.35	1.35	NULL	1	1
ServiceI_sub	DC1_Sub	1	1	DC2	1	1	DW	1	1	LLSub	1	1	BR	1	1	AASHTO Wind Cases Service I	1	1	NULL	1	1	TU	0.5	0.5	Cent	1	1	NULL	1	1
ServiceII_sub	DC1_Sub	1	1	DC2	1	1	DW	1	1	LLSub	1.3	1.3	BR	1.3	1.3	NULL	0	0	NULL	0	0	TU	0.5	0.5	Cent	1.3	1.3	NULL	1	1
StrengthI_sup	DC1_Sup	1.25	0.9	DC2	1.25	0.9	DW	1.5	0.65	LL	1.75	1.75	BR	1.75	1.75	NULL	0	0	NULL	0	0	TU	0.5	0.5	Cent	1.75	1.75	NULL	1	1
StrengthIII_sup	DC1_Sup	1.25	0.9	DC2	1.25	0.9	DW	1.5	0.65	LL	0	0	BR	0	0	AASHTO Wind Cases Strength III	1	1	NULL	0	0	TU	0.5	0.5	Cent	0	0	NULL	1	1
StrengthV_sup	DC1_Sup	1.25	0.9	DC2	1.25	0.9	DW	1.5	0.65	LL	1.35	1.35	BR	1.35	1.35	AASHTO Wind Cases Strength V	1	1	NULL	1	1	TU	0.5	0.5	Cent	1.35	1.35	NULL	1	1
ServiceI_sup	DC1_Sup	1	1	DC2	1	1	DW	1	1	LL	1	1	BR	1	1	AASHTO Wind Cases Service I	1	1	NULL	1	1	TU	0.5	0.5	Cent	1	1	NULL	1	1
ServiceII_sup	DC1_Sup	1	1	DC2	1	1	DW	1	1	LL	1.3	1.3	BR	1.3	1.3	NULL	0	0	NULL	0	0	TU	0.5	0.5	Cent	1.3	1.3	NULL	1	1
StrengthI_cons	DC1_Sup	1.4	0.9	NULL	1.25	0.9	NULL	1.5	0.65	NULL	1.75	1.75	NULL	1.75	1.75	NULL	0	0	NULL	0	0	NULL	0.5	0.5	NULL	1.75	1.75	NULL	1	1
StrengthIII_cons	DC1_Sup	1.25	0.9	NULL	1.25	0.9	NULL	1.5	0.65	NULL	0	0	NULL	0	0	NULL	1	1	NULL	0	0	NULL	0.5	0.5	NULL	0	0	NULL	1	1
StrengthV_cons	DC1_Sup	1.25	0.9	NULL	1.25	0.9	NULL	1.5	0.65	NULL	1.35	1.35	NULL	1.35	1.35	NULL	1	1	NULL	1	1	NULL	0.5	0.5	NULL	1.35	1.35	NULL	1	1
FatigueI	DC1_Sup	0	0	DC2	0	0	DW	0	0	LLFat	1.75	1.75	BR	1.75	1.75	NULL	0	0	NULL	0	0	TU	0	0	Cent	1.75	1.75	NULL	1	1
FatigueII	DC1_Sup	0	0	DC2	0	0	DW	0	0	LLFat	0.8	0.8	BR	0.8	0.8	NULL	0	0	NULL	0	0	TU	0	0	Cent	0.8	0.8	NULL	1	1
ServiceIII_sub	DC1_Sub	1	1	DC2	1	1	DW	1	1	LLSub	1	1	BR	1	1	NULL	0	0	NULL	0	0	TU	0.5	0.5	Cent	1	1	NULL	1	1
ServiceIV_sub	DC1_Sub	1	1	DC2	1	1	DW	1	1	LLSub	0	0	BR	0	0	AASHTO Wind Cases Service IV	1	1	NULL	0	0	TU	0.5	0.5	Cent	0	0	NULL	1	1
StrengthIV_sup	DC1_Sup	1.5	0.9	DC2	1.5	0.9	DW	1.5	0.65	LL	0	0	BR	0	0	NULL	0	0	NULL	0	0	TU	0.5	0.5	Cent	0	0	NULL	1	1
StrengthI_sub	NULL	1	1	NULL	1	1	NULL	1.75	1.75	NULL	0	0	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	1.75	1.75
StrengthIII_sub	NULL	1	1	NULL	1	1	NULL	0	0	NULL	0	0	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0
StrengthV_sub	NULL	1	1	NULL	1	1	NULL	1.35	1.35	NULL	0	0	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	1.35	1.35
ServiceI_sub	NULL	1.2	1	NULL	1	1	NULL	1	1	NULL	0.5	0.5	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	1	1
ServiceII_sub	NULL	1	1	NULL	1	1	NULL	1.3	1.3	NULL	0.5	0.5	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	1.3	1.3
StrengthI_sup	NULL	1	1	NULL	1	1	NULL	1.75	1.75	NULL	0	0	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	1.75	1.75
StrengthIII_sup	NULL	1	1	NULL	1	1	NULL	0	0	NULL	0	0	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0
StrengthV_sup	NULL	1	1	NULL	1	1	NULL	1.35	1.35	NULL	0	0	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	1.35	1.35
ServiceI_sup	NULL	1.2	1	NULL	1	1	NULL	1	1	NULL	0.5	0.5	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	1	1
ServiceII_sup	NULL	1	1	NULL	1	1	NULL	1.3	1.3	NULL	0.5	0.5	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	1.3	1.3
StrengthI_cons	NULL	1	1	NULL	1	1	NULL	1.75	1.75	NULL	0	0	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	1.75	1.75
StrengthIII_cons	NULL	1	1	NULL	1	1	NULL	0	0	NULL	0	0	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0
StrengthV_cons	NULL	1	1	NULL	1	1	NULL	1.35	1.35	NULL	0	0	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	1.35	1.35
FatigueI	NULL	0	0	NULL	0	0	NULL	1.75	1.75	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	1.75	1.75
FatigueII	NULL	0	0	NULL	0	0	NULL	0.8	0.8	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0.8	0.8
ServiceIII_sub	NULL	1	1	NULL	1	1	NULL	1	1	NULL	0.5	0.5	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	1	1
ServiceIV_sub	NULL	1	1	NULL	1	1	NULL	0	0	NULL	1	1	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0
StrengthIV_sup	NULL	1	1	NULL	1	1	NULL	0	0	NULL	0	0	NULL	1	1	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0
StrengthI_sub	NULL	1	1	NULL	1.5	0.75	NULL	1.5	0.9	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1.4	0.25	NULL	1	1	NULL	0	0
StrengthIII_sub	NULL	1	1	NULL	1.5	0.75	NULL	1.5	0.9	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1.4	0.25	NULL	1	1	NULL	0	0
StrengthV_sub	NULL	1	1	NULL	1.5	0.75	NULL	1.5	0.9	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1.4	0.25	NULL	1	1	NULL	0	0
ServiceI_sub	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	0	0
ServiceII_sub	NULL	0	0	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	0	0
StrengthI_sup	NULL	1	1	NULL	1.5	0.75	NULL	1.5	0.9	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1.4	0.25	NULL	1	1	NULL	0	0
StrengthIII_sup	NULL	1	1	NULL	1.5	0.75	NULL	1.5	0.9	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1.4	0.25	NULL	1	1	NULL	0	0
StrengthV_sup	NULL	1	1	NULL	1.5	0.75	NULL	1.5	0.9	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1.4	0.25	NULL	1	1	NULL	0	0
ServiceI_sup	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	0	0
ServiceII_sup	NULL	0	0	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	0	0
StrengthI_cons	NULL	1	1	NULL	1.5	0.75	NULL	1.5	0.9	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1.4	0.25	NULL	1	1	NULL	0	0
StrengthIII_cons	NULL	1	1	NULL	1.5	0.75	NULL	1.5	0.9	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1.4	0.25	NULL	1	1	NULL	0	0
StrengthV_cons	NULL	1	1	NULL	1.5	0.75	NULL	1.5	0.9	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1.4	0.25	NULL	1	1	NULL	0	0
FatigueI	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0
FatigueII	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0	NULL	0	0
ServiceIII_sub	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	0	0
ServiceIV_sub	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1	1	NULL	0	0
StrengthIV_sup	NULL	1	1	NULL	1.5	0.75	NULL	1.5	0.9	NULL	1	1	NULL	1	1	NULL	1	1	NULL	1.4	0.25	NULL	1	1	NULL	0	0

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