William A. Radford · Radford Architectural Company · leaf 41
the results prove. Fireproof Qualities. The destructionof mortar by heat is due more to the ac-tion of the fire upon the sand and brokenstone incorporated with it than upon thecement itself. This has been demonstratedmany times in tests and in actual expe-rience. Where there is an excess of sand 42… … Fig. 15—Methods of constructing the corner of a cementplaster house and the use of expanded metal lath. fort to cheapen the cost of the mortarworkers are tempted to add sand too freelyin proportion to the amount of cementused, but not to such an extent as to actual-ly weaken the strength or…
