Commercial Atrium(balcony,series,wave,region)

      This is a design for a commercial atrium,that's the first time I ues Grasshopper to help me to make a sketch model,after I read the book<Generative Algorithms> by Zubin Khabazi.I come across lots of questions,Hope guys show me some more different ways to figure out thoes kinds of problems,Thanks.

      That is a construction project,the balconies should be overhang between 1 to 3 meters.

      Program A is a patten consist of increasing balconies as the floors get upper.(In the picture is 29 at the first floor and ended with 2 more balconies for each floor, )Each part for a different floor,the twelfth floor have 29+(12-1)*2=51 balconies.

Questions From A,

     A1:How to use the {(series)} to creat this atrium,As the floors increase the number   of the balconies change by arithmetic progression.

     A2:How to control the angle of the  balconies,both the angle with floor and            the  balconies ending part.

      Program B is use line to shape the commercial atrium,program A is more small pieces of rectangles.The {(TweenCrv)} command. 

Questions From B,

     B1:How to draw random points between the 1 to 3 meters region of the balcony,And those point form a shape also belongs to that region.

     B2:Use a  curve or other ways to control the changing speed of each floors' balcony.Right now the balcony is a Linear change.

Thanks for your Help.

      Q1:Is there a way in Grasshopper to control the model to Modulus，less different unit parts to build such a Atrium.(For Exanple,only use 900mm and 600mm two different width of the Glass railings to bulid the model A OR B)