Hi. New to forum with a interesting project I’ve been thinking about for a while. 

I have a kite winder where we are adding a new landing that will step onto the winder. I hope to add a straight tread at the widest part of the kite winder to step up into that landing and stairs continue upto the first floor. Trying to avoid making a landing where the existing winder is as this will push the bottom stairs further into a hallway. I add a picture to explain the idea. Happy these additional steps will have min. tread and rise for building regs just wanted to gather others opinion.

https://s17.postimg.org/5xjm8l…..stairs.gif black is the new tread/landing and blue the new rise. 

Any advice on building regs or adding this feature? thanks.