Load Combination Table

This section configures load factors for each design load combination.

Navigation: Combinations > Design Load Combinations > Load Combination Table

For detailed parameter explanations, see the Load Combination Table Reference.

Steps

Step 1: Navigate to Load Combination Table

Navigate to Combinations > Design Load Combinations > Load Combination Table in the tree view.

Step 2: Review Default Load Factors

Review the default load factors provided for each limit state per AASHTO LRFD Table 3.4.1-1.

Step 3: Modify Load Factors (If Required)

Adjust load factors based on project-specific requirements:

Load Type	Strength I	Service I	Service III
DC (Dead Load)	1.25/0.90	1.00	1.00
DW (Wearing Surface)	1.50/0.65	1.00	1.00
LL (Live Load)	1.75	1.00	0.80
PS (Prestress)	1.00	1.00	1.00

Step 4: Configure Multiple Presence Factors

Ensure multiple presence factors are applied correctly for live load combinations.

Quick Tip: Max/Min Load Factors

Use maximum load factors when the load effect increases the design action, and minimum factors when it decreases the design action. This ensures the most critical condition is evaluated.

Verification

After completing these steps, load combination factors are configured per AASHTO LRFD requirements.