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.
Distance From Wall. To ensure your hand has enough room to slide down the rail, the rail must be at least 1.5 inches from the wall. The railing can project into the stairway up to 4.5 inches. This means a handrail against your stairway wall must be narrow, no larger than 3 inches in diameter.