Hi folks,

I am taking on a DIY job at my back door next weekend and I need some help for one part of it.

I am adding a little mini deck outside a silding back door -nothing fancy. The door is 6ft - so I am going to put an 7 ft * 3 Ft box up. I am extending it 1 ft to the left of the door which opens, to give a little more room when going in with groceries, etc.

Building code in my town requests railing over 30 Inches. The height to top of platform will be 22" - so no railing required at this time.

I am planning on wraping the steps around the platform since I do not need railings and also its a very active back yard so it makes sense that you can come in from either side ( perception at least)

Here-in lies the problem. I have no problems measuring and calculating the stringers for the 2 short sides and the front. However at both the left and right corners, how do I calculate the corner stringers and attach them to the corner of the platform box?

I have googled the S#*t outta this and cannot come up with anything...

Thanks guys in advance