1. The problem statement, all variables and given/known data Member AD of the timber truss (shown in attachment) is framed into the 100 x 150 mm bottom chord ABC as shown in the insert. Determine the dimension "a" that must be used if the average shearing stress parallel to the grain at the ends of chord ABC is not to exceed 2.25 MPa. 2. Relevant equations 3. The attempt at a solution T=V/A I found the tension in AB to be 12 kN and the tension in AD to be -15 kN. I'm confused on how to find V and the cross section area? What would the thickness be of the the bottom chord according to this figure? Thanks.