Architectural hygiene, or, Sanitary science as applied to buildings : a text-book for architects, surveyors, engineers, medical officers of health, sanitary inspectors and students / written and fully illustrated by Banister F. Fletcher and H. Phillips Fletcher.
- Sir Banister Fletcher
- Date:
- 1899
Licence: Public Domain Mark
Credit: Architectural hygiene, or, Sanitary science as applied to buildings : a text-book for architects, surveyors, engineers, medical officers of health, sanitary inspectors and students / written and fully illustrated by Banister F. Fletcher and H. Phillips Fletcher. Source: Wellcome Collection.
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![! VENTILATION AND HEATING SCHEIMES. 187 j I sauare foot of dass requires ^ heat units. j ICO ] 752 X - ^ = ... 692 j 100 I Wall Surface and Roof.— | Sides 83 X 50 X 2 = 8,300 Ends 42 X 30 X 2 = 2,520 10,820 I Deduct glass 752 To,o68 I square foot requires ^ heat units. 10 3 10,068 X = ... 3,018 ' 10 ^' 5,6 £2 heat units required per each degree of internal and external difference : 55 deg. internally when 30 deg. ex- ternally = 25 deg. difference. 5,612 X 25 = 140,300 I ft. super. H.W. surface gives off 175 heat units. 140,300^175=800 sq. ft. heating surface. 188 fr. run 3-in. pipe= 165 ft. sup. 6 radiators at 106 ft. = 636 801 sq. ft. of heating surface. Ventilation.—Cubic contents, 104,580. Velocity of extract 6 ft. per second = 21,600 per hour. 104,580-^ 21,600 = 5 sq. ft. One extract ventilator 32 in. diameter (extract) = 5*5 sq. ft. Six 18 in. X 12 in. at | of area-6 sq. ft. (inlet). (/) Hall (with Flat Plaster Ceiling). (F/o-s. 252 and 253.) This was a case in which the hall had been built for some time without being heated in any w^ay; consequently, fresh](https://iiif.wellcomecollection.org/image/b21782817_0197.jp2/full/800%2C/0/default.jpg)
