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.
When to Use Railings. Stair rails, or handrails as they are sometimes called, are required any time stairs have a total rise of 30 inches or more above the lower ground surface, or if there are four or more risers. This includes even outdoor structures such as decks or porch steps.