FIG. 1 is a front perspective view of the tread plate flooring, the broken lines illustrate the environment of the invention and forms no part of the claimed design;
FIG. 2 is a front perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a left side view, the right side view being a mirror image thereof; and,
FIG. 5 is an enlarged view of the tread plate design thereof.
The broken lines are for illustrative purposes only and form no part of the claimed design.