Question

For ultimate load design of prestressed concrete girders used for bridges, combination of load factors used is (where DL and LL are dead and live loads respectively)

• A. 1.5 DL + 2.5 LL
• B. 1.0 DL + 2.5 LL
• C. 1.0 DL + 2.0 LL
• D. 2.0 DL + 2.0 LL

Answer 1

The correct option is D 2.0 DL + 2.0 LL

In ultimate load design concept for prestressed concrete girder used for bridges, the load factor taken for both L.L and D.L is 2.
Ultimate load = 2.0 Dead Load + 2.0 Live Load