380
EXPOSITION AT VIENNA.
requiring brick ceilings. The construction common in the better class of houses in Vienna, where the depth of the room is twenty-four feet generally, is shown in the accompanying drawing.
Section across beams.
Beams of nine-inch by six-inch timber, separated by intervals of not more than three feet, rest parallel to each other, with at
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. Section parallel to beams.
a main beams, b boarding, c smaller beams supporting ceiling, d stucco, etc. e joists.
least six inches of their ends upon the walls. Upon these a boarding is laid to receive the tilling referred to. In this tilling are buried joists at right angles to the main beams, and upon these the flooring is finally nailed. The laths or reeds to receive the plaster of the ceiling may be nailed dh'ectly to the lower surfaces of the beams, or, as is more customary, to smaller beams placed between the first and slightly lower. In this way the ceiling is secured from vibration, which is especially desirable when much stucco-work is employed.
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Fire-proof floor with filling and separate support for ceiling, and boarding between the beams.
The whole thickness of this construction is eighteen inches, which includes a parquet flooring. At the risk of making