ntages olthis type of Hoor construction are thai it is light in weight,—thus saving in structur.il steel; on-lj <i minimumamount of form- an- required; it givesa flat ceiling, and only two coats ofplanter are required^ In freezingweather the block helps largely to pro-tect the concrete from… … PxRIiriON Willi Bl.inK> (iHolTLI) IN FRONT,
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