STRUCTURAL FEATURES
BEAM CONNECTION TO GIRDERS
48. In factory construction, the headroom is seldom available to support beams on the girders, as indicated in [Fig. 23 (a)]. It is usually necessary, in order to cheapen the construction of mill buildings, to keep the distance between the clear headroom and the finished floor level to the very minimum, and consequently the tops of the beams are most always brought flush, or nearly so, with the top of the girder.
A common construction is to use some of the various forms of wrought-iron hangers, as shown in [Fig. 23 (b)]. The type of hanger shown is a single stirrup, and is probably the best of any on the market; where beams enter the girder on both sides, the hanger is designed double. While it is popularly supposed that this hanger would readily fail by the bending of the metal at a, it is usually proportioned to safely carry any reaction imposed under ordinary floor loads. This hanger is obtained stamped out of steel plate or formed from bar iron.
(a)
(b)
