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.
1 They often have only a rubber runner nailed to the treads for traction and a simple railing.  Attic stairs (approx. $500.00 - $900.00): In older homes, attic stairs are usually a set of plain, unadorned stairs accessed through a door. They may or may not have a carpet runner.