What rules govern stair construction?

All stairs are to be built with a 7 ¾” maximum riser and 10” minimum tread depth, headroom of 6’8” minimum, and handrails between 34 and 38 inches from the tread nosing. All handrails will be graspable, and will follow the guidelines established in the NFPA. (NFPA-101 2006 7.2.2). Stairways must be a minimum of 36” wide from finished wall to finished wall or railing.