. The book of the garden. Gardening. gers, but which by an extension in width and strength of material may be adapted for carriages also. For short spaces, the tension bridge, as represented in our woodcut, has all the advantages of the suspension, and is in some situations more suitable. It can be erected at a trifling cost; that for a bridge for foot- passengers not exceeding 25s. per foot in span—a cost probably below that of any other bridge of equal strength, durability, and elegance of form. Rustic bridges are of more humble pre- tensions than those already noticed. They, however, have t
. The book of the garden. Gardening. gers, but which by an extension in width and strength of material may be adapted for carriages also. For short spaces, the tension bridge, as represented in our woodcut, has all the advantages of the suspension, and is in some situations more suitable. It can be erected at a trifling cost; that for a bridge for foot- passengers not exceeding 25s. per foot in span—a cost probably below that of any other bridge of equal strength, durability, and elegance of form. Rustic bridges are of more humble pre- tensions than those already noticed. They, however, have the merit of being cheap, the material in general being on the proprietor's own property. They also associate well with garden scenery, and admit of great variety of form. We be- lieve that, with one or two exceptions, the designs of the following bridges have not been published. Figs. 953, 954, have stone abutments, upon which the principal timbers rest. They are adapted to cross rivulets, or spaces from ten to twenty feet in width. They are best constructed if from three to five feet in width—a breadth quite VOL. I. sufficient for foot-passengers, for which purpose they are chiefly intended; but Fig. they can be so built as to carry carts or carriages, by laying from each abut- ment three 6-inch Baltic battens, set on edge across, and tied together at the ends and middle with an iron bar, to keep them in their places. Over this a flooring of deal or oak is laid, rough from the saw, the upper surface of which is to be covered with a coat of asphalt, to form the footway, and to keep the flooring dry. The outer sides of the two outer battens are covered with larch bark, and the parapets or hand-rails are constructed of pieces of the same kind of tree, cut into the necessary lengths, and selected so as to be of as near the same thickness as possible. The middle of the footway should be rather higher than the sides, to allow of the escape of rain water, which can easily b
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectgardening, bookyear18
