Suspension bridge major wire-cable suspension bridge was the in Philadelphia, Pennsylvania. Designed by Charles Ellet, Jr. and completed in 1842, it had a span of 109 m. Ellet's Niagara Falls Suspension Bridge (1847–48) was abandoned before completion. It was used as scaffolding for John A. Roebling's double decker railroad and carriage bridge (1855). The Otto Beit Bridge (1938–39) was the first modern suspension bridge outside the United States built with parallel wire cables. The main forces in a suspension bridge of any type are tension in the cables and compression in the pillars. Since almost all the force on the pillars is
GSL-class berthing pontoon intended for berthing vessels having displacement up to 40,000 tons on a jetty by serving as spacers between the jetty and the ship. They were built as part of an order to also construct one Service Barge Pontoon and four gangways. The request for proposal was issued on 7 March 2011 and the contract was signed on June 2011. By February 2013 all four pontoons had been delivered. Two pontoons were stationed at Naval Dockyard, Mumbai and two at the Naval Base in Karwar. GSL service barge pontoon GSL-class berthing pontoon The GSL class of jetty berthing pontoons are a