A beam is part of the framing system for the floor of an off…

A beam is part of the framing system for the floor of an office building. The floor is subjected to both dead loads and live loads. The maximum moment caused by the service dead load is 39 ft-kips, and the maximum moment for the service live load is 51 ft-kips (these moments occur at the same location on the beam and can therefore be combined). If LRFD is used, what is the required nominal strength of the beam for a resistance factor φ of 0.65?