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.
Divide the total rise by the typical rise per step. This will give you the total number of steps on your stairs. The typical rise per step is about 7 inches (17.8 cm), but you'll probably use a different height in your final construction. So, if your riser is 7 inches (17.8 cm) tall, your tread should be anywhere from 9 to 11 inches (23 to 28 cm) long. 2  This makes the treads long enough to comfortably fit the average foot on and high enough to make stepping easy.