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FLOORS.
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9 in. by 6 in.; bridging joists, 6 in. by 2½ in.; ceiling joists, 3 in. by 2 in. Figs, 342 and 343 will make the construction clear. Figs. 344 to 346 are details of a double floor for a smaller span. Figs. 345 and 346 are views taken at right angles to each
Fig. 345.—Section taken through Girder and Joists.
Fig. 346.—Section taken at Right Angles to Fig. 345.
Fig. 347.—View of Under Side of Framed Floor, with Wood Ceiling and Beams Wrought and Moulded.
