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.
I know there is code about tread depth and riser height, and that one can sustain an injury when there is only a single step. I've recently seen a couple homes with what appear to be lethal stairs -- a 9, 10, 12 foot straight run.This is also common in office buildings with escape stairs in a stairwell.'ve recently seen a couple homes with what appear to be lethal stairs -- a 9, 10, 12 foot straight run. This is also common in office buildings with escape stairs in a stairwell.