Extracted text: Situation - Wooden log is used to bridge a 2.5-m gap. The bridge will support a concentrated load of 26-kN . The allowable bending and shearing stresses of wood are 6.7 MPa and 1.3 MPa, respectively. Neglect the weight of the log. If a rectangular log is used with width of 150 mm, select the minimum depth to support the given load.