. Florists' review [microform]. Floriculture. Fig. II. Type of 3Moot Houses that are Ahnost of Standard Width. A wide house, say forty feet, is not as steep in the roof aa a narrower house would be, say tweri^ feet wide. [Fig. III.] The wide house would get too high if the same degree were taken as is used for the narrow house and it would present too large a surface to the wind and snow; it would mean stronger bracing and more expensive construction in many ways. Another point is, that with a house forty feet wide and over, the expanse of roof contains more glass in one body com- pared to the
. Florists' review [microform]. Floriculture. Fig. II. Type of 3Moot Houses that are Ahnost of Standard Width. A wide house, say forty feet, is not as steep in the roof aa a narrower house would be, say tweri^ feet wide. [Fig. III.] The wide house would get too high if the same degree were taken as is used for the narrow house and it would present too large a surface to the wind and snow; it would mean stronger bracing and more expensive construction in many ways. Another point is, that with a house forty feet wide and over, the expanse of roof contains more glass in one body com- pared to the ground covered and the number of eaves, and therefore will drain a greater amount of water and melt a greater amount of snow in a given time than the amount of glass on narrow houses. The steep pitch is not required for wide houses. Regulating the Boof Fitch. Whatever be the reason or the neces- sity for pitch of roof on account of width of the house, why not establish a limit for width for one pitch and a limit for width of house for another pitch? Why have several degrees of pitch for the same width of house? One pitch is not desirable for all widths of houses, in my opinion, but if a pitch is desirable for a certain width it should be made the standard for that width. I do not believe it is neces- sary to establish different degrees of pitch to suit different localities, for the variation throughout that portion of the country which has need for greenhouses to any great extent is small, and does it really make a dif- ference when you go south of Mason and Dixon's line? For houses up to and including twenty-one feet in width, center to center of posts, a pitch of 32 degrees seems best. Whether or not this should be adopted as a standard for all types of houses, is a matter for discussion. The 32 degree pitch is one that was established a number of years ago and is practically equal to a rise of seven inches on the roof to every foot of width in the greenhouse. Probably custo
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