âI think whatâs changed a bit over the years is â over time, the concentration of the active ingredient, THC, has increased dramatically in the marijuana that is available for people to smoke,â Ball said in a video.
Exterior residential entrance steps are usually about 7 inches high, so a porch with more than 2 steps would be about 21 inches high. Most building codes require a 36 inch high guard (railing) if the change in level is 30 inches or more.
A: Regulations established by the Occupational Safety & Health Administration, or OSHA, require that stairways with four or more steps, or that rise more than 30 inches, need at least one handrail. It should be placed between 30 and 37 inches above the surface of the stair tread.