ils, which are liable to
draw a sloping face out of position as they get home.

[Illustration: Fig. 14.--On left, elevation of end of run; on right,
door for run.]

The doors are made of 2 by 2 inch stuff, halved at the corners. Cut out the
top and bottom of the two sides; lay them on the floor so as to form a
perfect rectangle, and nail them together. The strut is then prepared, care
being taken to get a good fit, as any shortness of strut will sooner or
later mean sagging of the door. Cut the angles as squarely as possible, to
ensure the strut being of the same length both inside and out.

Note.--As the door is rectangular, it does not matter which corners are
occupied by the ends of the strut; but when the door is hung, the strut
must run relatively to the side on which the hinges are, as shown in Fig.
14. Amateurs--even some professionals--have been known to get the strut the
wrong way up, and so render it practically useless.

Covering the Ends of the House.--The ends of the house should be covered
before erection, while it is still possible to do the nailing on the flat.
The run end is boarded right over, beginning at the bottom, and allowing
each board to overlap that below it by 1 inch. The board ends are flush
with the outer sides of the rafters. When boarding is finished, cut (with a
pad saw) a semicircular-topped run hole, 14 inches high and 8 inches wide,
in the middle of the bottom. Any structural weakness caused by severing the
two lowest boards is counteracted by the two grooved pieces in which the
drop-door moves.

Odds and ends of weather boards should be kept for the door end of the
house, which requires short pieces only, and is not boarded below the top
of b2. The door may be weather-boarded to match the rest of the end, or
covered by a few strakes of match-boarding put on vertically.

The two base pieces, b1 and b2, and the ridge should be marked off for the
rafters at the same time. All three are 10-foot lengths of 4 by 1 wood,
unless you prefer the ridge to project a bit, in which case you must allow
accordingly.

Stand all three pieces together on edge, and make the marks with a square
across the tops. Allow a distance of 4 feet between the outside faces of r1
and r3; halve this distance to get the centre of r2; and subdivide the
distance between r3 and r6 so that each rafter is separated from its
neighbours by an equal space, which will be 1 foot 11 inches. Number the
marks and continue