Show STRENGTH OF corrugated OR WRINKLED 0 lito irto IRON experiments have been made at washington to ascertain the strength added to iron by co corrugation A plate four inches ion lon long iong and ahr three ce broad so ahin thin that supported at the ends it would bend of its own weight when corrugated sustained hied fied a weight of pounds corrugated iron has been adopted for many mahy camp utensils A camp bedstead of this iro iron n weighs 50 pounds and ia is equally strong with the english camp bedstead weighing 0 lbs ibs A corrugated iron watertight water tight wagon wagan 11 body gody that floats from 2000 to 2500 p pounds of freight has also atso been adopted into the service of the united states besides other articles of the same material the additional astren strength th of the iron in this form is obviously upon the principle of the arch A circular tube is in proportion to its amount of material the strongest of all forms corrugated iron is stronger than plain fronbe cause the metal is contracted in bulk as well as arched inform ex |