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.
Building the Porch Steps. 1  1. Calculate the run of the steps (how long they will be). 2  2. Measure from the bottom of the level to the ground using a 4-foot (1.2 m) level set on the top of the porch. Take the total height and divide it by the height of the riser. 3  3. Multiply 5 steps by 10.5 inches (26.7 cm).