This section is from the book "Cyclopedia Of Architecture, Carpentry, And Building", by James C. et al. Also available from Amazon: Cyclopedia Of Architecture, Carpentry And Building.
If the girder is to be framed flush with the timbers, the use of stirrup irons or patent hangers is recommended, as preserving the full strength of the girder. In this case the timbers should be brought as nearly opposite as possible, and iron dogs long enough to reach over the girder and drive down into opposite timbers should be used. (Fig. 179.)
If the girder is deeper than the floor timbers it may be set flush on top, and smaller pieces of hard pine or an angle iron may be bolted to the lower part to receive the floor timbers, as shown in Fig. 180.