Greenhouse construction : a complete manual on the building, heating, ventilating and arrangement of greenhouses, and the construction of hotbeds, frames and plant pits . appearance of the Availcan be improved if, after the lastcourse lias been put on, the ex-WrfC \H ])osed surface is given a thin coat r-Jl?fI l^ of Portland cement mortar. If desired, the surface can be laid offinto squares, resembling blocks ofsandstone. The appearance of awall built entirely of grout isshown in Pig. 11, wliilc Fig. 12shows a wall half grout and halfAvood. BRICK A\^\LLS. Unless the very best materialsare used
Greenhouse construction : a complete manual on the building, heating, ventilating and arrangement of greenhouses, and the construction of hotbeds, frames and plant pits . appearance of the Availcan be improved if, after the lastcourse lias been put on, the ex-WrfC \H ])osed surface is given a thin coat r-Jl?fI l^ of Portland cement mortar. If desired, the surface can be laid offinto squares, resembling blocks ofsandstone. The appearance of awall built entirely of grout isshown in Pig. 11, wliilc Fig. 12shows a wall half grout and halfAvood. BRICK A\^\LLS. Unless the very best materialsare used in their construction, thegreenhouse Avails constructed ofbrick will be com])aratively short-GKOUT AKD Jived, as the combined action ofAVOODEN AVALL. moisturc and frost Avill disinte-grate the mortar, and cause the outer tier of bricks tocrumble. Hard burned bricks should be selected, andthe best Louisville, or, better yet, Portland cement mor-tar, should be used. Whatever the tliickness of thewall, there should be, at least, one air space, to preventradiation of This will also tend to render the wallmore duiable, by preventing the capillary passage of the. FIG. 12. WOODEN WALLS. 27 moisture. Fur all low walls, two tiers of brick, with aone-inch air space, making a nine-inch wall, will answer ;these should be firmly tied together every fourth coursevertically, and every three or four bricks along the walls,Fig. 13. A post once in eight feet will strengthen thewall, and prevent tlie plates from spreading. For heavyor wide structures, or if the wall is high, a third tier ofbricks on the inside, one-half, or,perhaps, two-thirds the height of thewall, will serve to strengthen 14 shows the construction ofsuch a wall, as used with an iron sill. WOODEN WALLS. Probably nine-tenths of thepresent greenhouses are constructedwith what might be called post andboard walls. In their erection, thepo?ts used should be of some durablematerial, such as red cedar, locustor cypress,
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Keywords: ., bookcentury1800, bookdecade1890, bookidgreenhouseco, bookyear1894
