. Annals of hygiene. M. D. THE ANNALS OF HYGIENE Vol. IV. PHILADELPHIA, APRIL i, i No. 4. COMMUNICATIONS, HEALTHY HOUSE BUILDING. BY C. FRANCIS OSBORNE,Consulting Architect, Cornell University,Ithaca, The damp-proof course shown in theillustration accompanying the pre-ceding article may most easily be madeby laying two courses of slate in purecement mortarabout midway be-tween the level ofthe outside gradeand the bottom ofthe floor joints ofthe ground upper courseof slate should beso laid as to coverthe joists in thelower course, andthe whole well cov-ered with masonry
. Annals of hygiene. M. D. THE ANNALS OF HYGIENE Vol. IV. PHILADELPHIA, APRIL i, i No. 4. COMMUNICATIONS, HEALTHY HOUSE BUILDING. BY C. FRANCIS OSBORNE,Consulting Architect, Cornell University,Ithaca, The damp-proof course shown in theillustration accompanying the pre-ceding article may most easily be madeby laying two courses of slate in purecement mortarabout midway be-tween the level ofthe outside gradeand the bottom ofthe floor joints ofthe ground upper courseof slate should beso laid as to coverthe joists in thelower course, andthe whole well cov-ered with masonry housesthe weight of thesuperstructure would be so great asto fracture the slates, and in suchcases the only safe method of formingthe damp-proof course is to spread alayer of hot asphalte over the entirethickness of the wall, in the sameposition as suggested for the object of this course is to preventthe dampness, which results from thesplashing caused by heavy rain stormsat the surface of the ground from. and e)i/b5oil ©YWnd NO SCALE rising to the timbers and causingspeedy decay. The matter of cellar floors is an im-portant one, requiring careful atten-tion. It may be laid down as a gene-ral rule that the whole cellar bottomshould be overlaid with a course ofcement concrete not less than fourinches thick. This may be composedof Rosendale cement (or water-limewhere the latter can be easily procured,)mixed with twoparts of sand andthree parts of smallstone chips, or wellwashed coarse grav-el—though the lat-ter cannot alwaysbe depen d e d onunless laid underexpert should be mix-ed in small quanti-ties and used assoon as made, beingwell rammed as soonas deposited andundisturbed until perfectly left then hard. Many cement floors whichotherwise would be perfectly satisfac-tory are injured by workmen whotramp over them a day or two afterthey are in place. They should beleft undisturbed for at least ten this concrete is thoroughly hardit should
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Keywords: ., bookcentury1800, bookdecade1880, booksubjecthygiene, bookyear1889
