Live Loads can be input in accordance with AASHTO Standard (LFD) Art. 3.7.1 by selecting either the H/HS lane loads or H/HS truck loads. Precast/Prestressed Girder analyzes the H/HS lane and truck loads separately. Therefore, the user must select both the H/HS lane and truck loads for analysis. In Precast/Prestressed Girder, the user can also select a Military Truck load in accordance with AASHTO Standard (LFD) Art. 3.7.4. In LFD design the impact factor is applied to all live load types (i.e. H/HS lane and truck loads and Military Truck load).