. Railway maintenance engineering, with notes on construction . apparently appreciate the value of preventing theair from reaching the ice, but believe that this is possible byusing a top covering of 3 or 4 ft. of marsh hay. When the iceis being taken out, the hay is cast in racks or mangers providedfor this purpose under the roof and thus kept dry. Ample air 304 RAILWAY MAINTENANCE space is left between the top of the hay covering the ice and theroof and a brisk circulation maintained through this advance the claim that any construction used for a ceilingwill be subject to rotting,
. Railway maintenance engineering, with notes on construction . apparently appreciate the value of preventing theair from reaching the ice, but believe that this is possible byusing a top covering of 3 or 4 ft. of marsh hay. When the iceis being taken out, the hay is cast in racks or mangers providedfor this purpose under the roof and thus kept dry. Ample air 304 RAILWAY MAINTENANCE space is left between the top of the hay covering the ice and theroof and a brisk circulation maintained through this advance the claim that any construction used for a ceilingwill be subject to rotting, owing to the condensation of moisturefrom the ice chamber, and quote several instances of ceilingshaving become decayed and falhng in after 7 or 8 years of 165A shows hair insulation used in an ice house. Here,as in the previous example, we have no ceiling to the ice chamber;the ice is packed to within 3 ft. from the plate and 2 to 3 ft. ofstraw placed on top of the ice. A circulation under the roof Paper Paper^.■lx2;30Ctr6, \^\^/^6 Drop6iaing. Fig. 164. ■Ice House with Mill Shavings & Gos. House. Wall Insulation, is obtained by opening the end windows during the night, theseare kept closed, however, during the day. It will be noticedfrom the figure that the roof has a steeper pitch than the roofin the house of Fig. 163, and consequently a larger air-spaceis left above the ice. Applying formula (4) we find that this wall construction willtransmit approximately 48 per square foot in 24 hoursfor 25 degrees difference day and night. Q = Z+X = .74+.28 = ___ 24Q (T- T) 1\M ICING STATIONS 305
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
