How many inches does the Stair tread depth typically stick out more than the run?

Answer 1

there are no set inches .... stairs are cut to a RATIO of the amount of space you need to climb [ say to the second floor of a house or to the top of a deck ] the steeper you make the stairs the higher this ratio will be. 10 inches of tread - and 8 inches of rise - is a common ballpark figure ... you cannot just decide i want my steps to be ______ height. you much use math and figure out how many steps can be divided equally into the total height. local building codes sometimes set a minimum and maximum height to the individual risers. making steps with one odd sized riser [ say shorter or higher than all the rest of the stairs so that it comes out correctly- and usually on the bottom step ] is a HUGE no-no as well. things too look up on the web are "framing square" and "stair stringer"