. Greenhouse construction and heating: containing full descriptions of the various kinds of greenhouses, stove houses, forcing houses, pits and frames, with directions for their construction, and also descriptions of the different types of boilers, pipes, and heating apparatus generally, with instructions for fixing the same. Greenhouses. 16 GEEENHOUSE CONSTRUCTION AND HEATING. Greenhouses are in most cases built on low walls of brick, stone, or concrete (though in some instances boards- are used for the sides), the glass of which the roof consists being carried in suitable wooden rafters, whi
. Greenhouse construction and heating: containing full descriptions of the various kinds of greenhouses, stove houses, forcing houses, pits and frames, with directions for their construction, and also descriptions of the different types of boilers, pipes, and heating apparatus generally, with instructions for fixing the same. Greenhouses. 16 GEEENHOUSE CONSTRUCTION AND HEATING. Greenhouses are in most cases built on low walls of brick, stone, or concrete (though in some instances boards- are used for the sides), the glass of which the roof consists being carried in suitable wooden rafters, which are properly grooved or " rebated " for the purpose. The timbers which are laid on the top of the walls, and to which the lower ends of the rafters are nailed, are termed "wall-plates," and along the apex of the roof, where the two sets of rafters meet (in a span- roofed or three-quarter span house) runs a piece of timber called the ridge plank. This serves at once to keep the rafters at their proper distances apart and to hang the venti- lators to. Where any part of the sides of the house is composed of glass this is usually fitted in sashes or framed lights, and in this case two " plates " are necessary—an. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ravenscroft, B. C. London, L. U. Gill; New York, C. Scribner's sons
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectgreenho, bookyear1901
