supports the third or garret floor joists as shown. Fig. 419 shows the staircase, partitions to the first and second floors, having door openings e and f. It must be noted that these partitions are not directly over the ground floor partition a (Fig. 418), and therefore do not receive any direct support from it. These partitions are designed to carry their own weight. The lower one supports one end of the first floor joists of the back room and landing, whereas only the landing of the second floor has to be supported by them. One end of these partitions is carried by the back wall, and the other is connected to the cross partitions by means of 58-in. bolts, which are indicated at a, b, c, d, e, f, and g (Fig. 418). Owing
Fig. 419.—Elevation of Staircase Partitions.
to the sill m (Fig. 419) of the lower cross partition having to carry the ends of the joists, the strongest method doubtless would be to fix them to fillets as shown at l (Fig. 419). The fillets would be spiked or bolted to the sill; mortising and housing for tusk tenoning, etc., of the joists would greatly
