David - at 22:18, you used the force (T2) in the second layer of steel to be in tension, despite it being above the PNA and the c value, thus giving a moment in the opposite direction. In section analysis, do you always have to assume that all steel in is tension?
David - at 22:18, you used the force (T2) in the second layer of steel to be in tension, despite it being above the PNA and the c value, thus giving a moment in the opposite direction. In section analysis, do you always have to assume that all steel in is tension?
C < h2