The Cabin of this House-Boat
is to fit in the space, A, B, D, C of the centrepiece, [Fig. 220]. There is to be a one-inch plank at each end (see [Fig. 222]), next to which the side-supports at each end of cabin fit. The supports are two-by-twos; so, allowing 1 inch for the plank and 2 inches for the upright support, the next pair of ribs will be just 3 inches from A B, [Fig. 220], of the centrepiece (see [Figs. 221] and [222]). The twin ribs at the forward end of the cabin will be the same distance from D C, [Fig. 220], as shown in the plan and elevation, [Figs. 221] and [222]. This leaves five pairs of ribs to be distributed between the front and back end of the cabin. From the outside of each end-support to the inside of the nearest middle-support is 2 feet 6 inches. Allowing 2 inches for the supports, this will place the adjoining ribs 2 feet 8 inches from the outside of the end-supports. The other ribs are placed midway between, as may be seen by the elevation, [Fig. 222].
There is another pair of