Show Life of Skyscraper lh The associate editor of the Archi Record says sUJ's that the average skyscraper Is estimated to continue In existence from to 30 years ThIs brief period of existence Is due to the rapid J growth and change In our cities and does not indicate failure due to construction n The modern skyscraper sk with proper care to ro- ro teet teel tie the steel framework and nes should a 8 century or long i r er Electrolysis has been found t td be Injurious to the lift lIf of steel and thIs may be a destructive factor about which little Is known which under certaIn conditions may shorten the fe of the sl skyscraper to half a century or so a |