Question 1 (5 marks): The wooden T-beam shown is made from two 150 x 30 mm boards. If the allowable bending stress is Oallow = 9 MPa and allowable shear stress is Tallow = 1.2 MPa, determine if the beam can safely support the load shown. Also, specify the maximum spacing of nails needed to hold the two boards together if each nail can safely resist 1.50 kN in shear. 150 mm 1.8 kN 30 mm A B 150 mm 2 m 1.5 m 30 mm