) The original design of the Menai Straits Bridge included four parallel wrought iron chain-links functioning as cables (two on each side of the deck), each with an equivalent cross-sectional area of 65 sq. in. How much horizontal tension force is carried by each individual chain-link cable, and what is the corresponding tension stress? If the breaking stress of the material is 25,000 psi (lb/ in2), what safety factor did Thomas Telford use?