Fig. 64.—Plan of Seat.
The two posts A, on which almost the entire weight is sustained, should be let into the ground not less than 2 ft. They rise 5 ft. above the ground-line. They are set at a distance, measuring from centre to centre, of 4 ft. apart. The smaller posts (marked B), which support the seat, stand 17 in. in advance of those last named, and should be let into the earth 1 ft. The broad seat thus given is essential to comfort when the back of the chair is upright, as it must be in this instance.
Two principal cross-pieces are nailed against the main posts. The lower one, of halved stuff, is 15 in. from the ground, and carries the back of the seat. The other is close to the top of the posts, and carries the back of the canopy. The canopy is chiefly supported on the three wall-plates, C ([Fig. 59]), which rest at one end on the heads of the posts, and towards the other on the struts, D ([Fig. 60]). Fig. 61 shows in plan the arrangement of the principal pieces forming the canopy: E E are the rafters of the gables, the lower ends of which rest on the wall-plates, and the upper against the pinnacle, F ([Fig. 61]). The back rafters are marked G G, and these rest their lower ends on the cross-piece and their upper against the pinnacle. [Fig. 62] shows the filling-in of the two back panels of canopy; Fig. [Fig. 63] that of the four side panels.
The filling-in of the back of the seat is clearly shown in [Fig. 59].
In [Fig. 64] the seat proper appears in plan. Its front and ends are of halved stuff, nailed to the posts. The spars forming the seat are placed with spaces between them, that they may not hold moisture; for the same reason, it is advised that they should be of peeled withy.