Common and Proper Nouns. A common noun names a general person, place. or thing. examples: I went to the city. The man was kind. A proper noun names a specific person, place, or thing. Always capitalize the first letter of a proper noun. examples: I went to San Francisco.
The width of the steps is flexible. A wide deck staircase (5 feet and beyond) feels graceful and looks it too. A narrow one, for example 3 feet wide, might feel cramped. Very wide steps are great...if you have the room for them and they work with your design. These usually work best with a single set of deck stairs.
I installed the stair treads with 2 deck screws. The treads are 5/4x6 deck boards, which are 5  wide. The pre-cut stringers have a tread dimension of 11 inches, so two deck boards (or 2x6's) fit exactly.But this leaves no tread overhang, or nosing, which is normal on stairs with enclosed risers. Without the nosing, people tend to stub their feet on the riser, and possibly trip. installed the stair treads with 2 deck screws. The treads are 5/4x6 deck boards, which are 5  wide. The pre-cut stringers have a tread dimension of 11 inches, so two deck boards (or 2x6's) fit exactly.