A witness may testify to a matter only if evidence is introduced sufficient to support a finding that the witness has personal knowledge of the matter. Evidence to prove personal knowledge may consist of the witnessâs own testimony. This rule does not apply to a witnessâs expert testimony under Rule 703.
Max. rise is now 7-3/4, and minimum run is 10, nose-to-nose, with at least a 3/4 bullnose required, so the step is actually about 11 long. For commercial or multi-family stairs, it is still 7 max and 11 min.ax. rise is now 7-3/4, and minimum run is 10, nose-to-nose, with at least a 3/4 bullnose required, so the step is actually about 11 long. For commercial or multi-family stairs, it is still 7 max and 11 min.
A flight of stairs shall not. have a vertical rise larger than 12 feet (3658 mm) between floor levels or landings. The. width of each landing shall not be less than the width of the stairway served. Every landing. shall have a minimum dimension of 36 inches (914 mm) measured in the direction of travel. R311.3 Floors and landings at exterior doors. There shall be a landing or floor on each side of each exterior door. The.