$1.$ While learning about wide$-$flange beams, a student learned that the various dimensions associated with it are the overall depth, fillet radius, thickness of the web, and flange width. However, the student also learned that not all of the dimensions are considered to be standard for the beam. Which of the following listed dimensions are considered to be a standard dimension for wide$-$flange beams?

$2.$ It is known that the most regular structures or geometries used in construction, experimentation, research, and the like are modeled according to certain standards of uniformity and repeatability of the experimentation results. However, standards change according to subjects and use. What is the standard by which structural steel members are made?