A treatise on architecture and building construction (1899)
International Correspondence Schools · Scranton, The Colliery engineer co. · leaf 34
in place. Sometimes it becomes necessary to lay concrete in runningwater, and unless some means is devised to protect it dur-ing the laying, the water will wash the cement away fromthe concrete, and weaken it. By making large bags of oiledcotton and filling them with concrete, and then loweringthem… … iJSSigS iS§gglg8^1&^
Architecture · Building
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