Rustic Carpentry

by Unknown

Fig. 122.	Fig. 123.
	Fig. 124.
	Fig. 125.
Fig. 122.—Cross Section of Foot-bridge. Fig. 123.—Enlarged Section of Girders for Foot-bridge. Figs. 124 and 125.—Parts of Joint of Post and Girder.

Fig. 126.	Fig. 127.	Fig. 128.
Fig. 126.—Detail of Middle Rail and Post of Foot-bridge. Figs. 127 and 128.—Joint of Strut to Post of Foot-bridge.

Fig. 129.—Twig Hollowed to fit Rail of Foot-bridge.

[Fig. 121] is a perspective view of a rustic foot-bridge suitable for a span of 8 ft. or 12 ft. The banks of the stream to be bridged are excavated to allow of the building of a low rubble wall, on which the sleepers rest, as shown in [Fig. 122]. The girders are formed of spruce or larch spars. In the present instance, four are used; and they may be 8 in. or 10 in. in diameter, according to the length of the span. They are roughly adzed down to sit on the sleepers, and each girder is also worked down tolerably flat on the inner sides. The girders are then bolted together in pairs with six ¾ in. diameter coach bolts, as shown by [Fig. 123]. The posts are tenoned and wedged to fit mortices in the girders. [Figs. 124] and [125] show the mortice and tenon joint.