Building-Stairs

I am Remodeling a Basement in an older house. Problem is now, that the stairs going down to basement are fairly steep. There has to be a formula or standard, given the opening, how many stairs are neded. I will add 1 or 2 landings if needed. Where can I find this formula or standard. Thanks for any help.

 

This is my shortcut way. It has not failed me in 34 years. However, you will probably get other answers on how they do it.
I would measure from the top of the basement floor straight up to the bottom of the threshold at the top of the stairs. I would then take this number 7 or 8' and convert to inches, then divide this number by 7 1/2 (7.50) inches. This will tell you how many risers of 7 1/2 inches (the height of the step) you will need. Your steps or treads will be 10 or 11" whatever you choose. You will need one less tread then you will risers. For instance if you have 11 risers, you will have 10 treads. Now take the number of treads and multiply by the tread width. (I use 11") So 10 treads x 11 inches = 110 inches, now divide by 12" and this will give you 9.16' which is the distance your stairs will go out into your basement. Now, to make this simple, knowing I need 10 steps or treads, I would just go to a good Home Improvement store and buy two 10 step risers. Cut your steps and your done. Good Luck

 

Thank you very much for your help and information. I have done quite abit of remodeling and building but, always had trouble w/ stairs. Again thanks.