Question $2$

For the deck beam supported by frame brackets and deck girders shown in Fig. $2,$ determine

the rotations at the girder and the central deflection under the downward vertical load of

$50kN$ if the bending stiffness $EI=16875kN-m^2.$ Assume that the brackets provide full

constraints and the girders are simple supports. $[40$ marks$]$

Fig. $2$

Hints: Consider half the structure, which takes only half the load, because of symmetry. The

slope beneath the point load is zero.