Great pictures; Thanks; Are these 2X8? Pressure treated? If I make a box of 7.5" height will it be as per code?

The lumber touching the cement is PT for ground contact. The others are just standard PT. To determine what dimension of lumber to use, it just takes a little math. The most important thing is that the steps all have equal risers. That will prevent tripping.

The math: if you want a single step, then it needs to be 8" above the patio level. If you're covering the box frame with decking or lumber that is 3/4" thick, then the box should be 7 1/4".

(If you used a 2x8 without ripping it down, your step would be 8 1/4" and 7 3/4", which is too big a difference for code.)

If you want 2 steps, then the top of the higher one will be at 10 3/4" and the lower one at 5 3/8". You can achieve this by a 4 5/8" box on the bottom and a 5 3/8 box on the top. 4 5/8" + 3/4" = 5 3/8"; 4 5/8" + 5 3/8" + 3/4" = 10 3/4".

You (hopefully) get the picture.

Also, make the tread depth at least 10" on each step.

Thanks again

weedyacres

Sorry; I don't understand the option I dimensions. You said 7 1/4" Box for single step which is exactly the size of 2X8; right? Why should i rip it then? Can i not use 7 1/4" (2X8) with 3/4" think lumber as the stair floor which will make it 8" that we need?

A 2x8 is 7 1/2" thick. But if you find a really dry one that has shrunk to 7 1/4", that would work. :-)

Is your drop exactly 16"? If it's a little more, then a 2x8 might be perfect.

You were very kind to provide that feedback!! Very good for him and the rest of us, also. I thank you! :)