With very rapid building, no method of construction of floors furrings, or partitions should be adopted which will not dry out with great speed.
The most simple test for the value of a system of fire-proof coverings, and of partitions and furrings, is to erect a large sample of the work and to subject it alternately to the continued action of an intensely hot flame which is allowed to impinge upon it, and to a stream of cold water directed upon it from the ordinary service nozzle of a steam fire engine.
All furrings and partitions must be started on the solid masonry of the floors to prevent the possible passage of fire from the room in which it may occur.
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