Fred T. Hodgson · Frederick J. Drake and Co. · leaf 371
requently results in the formation of fine cracks,which though unnoticed at the time, give evidence oftheir presence later in the failure of the posts. Posts should be allowed to cure for at least sixty daysbefore being placed in the ground, and for this purposeit is recommended that when moved… … Tool used for beveling edges ofposts. NO. 15. 368 CEMENTS AND CONCRETES The life of the molds will depend upon the care withwhich they are handled. A coating of mineral oil orshellac may be used instead of soap to prevent the cementfrom sticking to the forms. As soon as the molds areremoved they…
