4. A rectangular elastomeric bearing pad consisting of alternating layers of synthetic chloroprene rubber and steel plates is used to support the end of a concrete girder. The dimensions of the bearing pad are 200 mm x 600 mm x 40 mm. A) Find the average shear strain, Yavg, in the pad (units of radians) if the girder displaces laterally a distance d = 8 mm. B) Determine the shear force (units of kN) applied to the bearing pad if the shear modulus, G = 1.03 MPa. 4 40 mm 200 mm

Fig: 1