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HI THERE! AUTOLISP FOR Copy of data from excel to acad.xlsxIN TEXT 90DEG ROTATED, NEED A AUTOLISP THAT CAN FUNCTION TO CREATE PARTIAL DISTANCES(0.000.000), CUMULATIVE DISTANCE(0+000.000) BASED ON THE LENGTH BETWEEN THE EACH VERTEX OF THE POLYLINE (APPROX. 3.69KM), PLEASE FIND THE ATTACHED DRAWING, THANKS IN ADVANCE PLEASE HELP, CREATE A LISP FOR PL.dwg

Hello I have been searching on the forum but can’t find about my specific issue so I decided to create the topic. First of all I have to say that I am pretty unexperienced on 3D design on Autocad so I am sure that I am not using the proper tools and those that I am using I am not doing it right. My goal is to design a “Y” shaped pipeline where the volume flow is constant (the sum of the volume flow of the two smaller branches is equal to the shaft and larger branch). So far what I have accomplished is pretty rudimentary: http://i.imgur.com/9n5dvm7.jpg The figure on the left would be the initial design and in order to avoid the narrowing on the zone rounded with a blue circle I made a longer body shaft (middle figure) which I would overlap and then unite to form the design on the right. An outside view: http://i.imgur.com/Q70ZbcW.png And a closer view, what I would like to do here is to have more rounded edges (internal and external edges) on the red marked zones: http://i.imgur.com/8ZNRnwU.png I would like to know better ways to do this, along with some easy way (I am struggling on this) to make it a hollow pipeline to create a mesh with it. Finally I would like to know how I could create another variation of the pipeline, where the shape is curved like this: http://i.imgur.com/Zmntk6m.jpg Note that in this figure only has 1 branch yet because I really don’t know how to make a 2 branch Y curved pipeline where the section is constant as said (which is the second design I would like to build). So I would like to ask for help with a) enhancing what I have done so far and being able to make it hollow to create a mesh with it and b) creating a curved rounded “Y” pipeline with 2 branches as shown on the last picture that achieves the condition of constant volume flow (the sum of the volume flow of the smaller branches must be equal to the big branch). Thank you!