Perhaps the most
noteworthy contrast is seen in the sills and lintels of the openings.
ROOFS AND FLOORS.
In the pueblo system of building, roof and floor is one; for all the
floors, except such as are formed immediately on the surface of the
ground, are at the same time the roofs and ceilings of lower rooms. The
pueblo plan of to-day readily admits of additions at any time and almost
at any point of the basal construction. The addition of rooms above
converts a roof into the floor of the new room, so that there can be no
distinction in method of construction between floors and roofs, except
the floors are occasionally covered with a complete paving of thin stone
slabs, a device that in external roofs is confined to the copings that
cap the walls and enframe openings.
[Illustration: Plate LXX. Court view of Pescado, showing corrals.]
[Illustration: Fig. 37. Diagram of Zu?i roof construction.]
The methods of roofing their houses practiced by the pueblo builders
varied but little, and followed the general order of construction that
has been outlined in describing Tusayan house building. The diagram,
shown in Fig. 37, an isometric projection illustrating roof
construction, is taken from a Zu?i example, the building of which was
observed by the writer. The roof is built by first a series of principal
beams or rafters. These are usually straight, round poles of 6 or 8
inches in diameter, with all bark and projecting knots removed.
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