@o0rico0o said:
Hi guys,
Im an architecture student,
Hi, all is OK, I'm an architecture teacher 
@unknownuser said:
normally im pretty good with modelling in sketchUp but with my current scheme im kind of stumped, im trying to model a tower similar to this....
http://www.archdaily.com/196321/%E2%80%98garden-ribbons%E2%80%99-a-city-hall-and-urban-park-shaga-studio/
Im having to model all of the internal elements as well so the final model needs to be as clean as possible. How would you experts recommend tackling it? is it best to model the overall form first ( if so how would i do this?) or would you say its best to take it floor by floor ( Although im not sure this would give the tower a smooth enough finish)?
I think is hard to want to model all elements of a building with SU...
But, if I had to do it, I will start with the global shape. With SU you must use some plugin tools for organic modeling like TIG's Extrude tools, Fredo6's Curviloft, Rick Wilson's Subdivide (on smustard.com) or better (but not free) Whaat's Artisan.
After, you can extract floors with TIG's Slice 5 and using the edges of the floors you can model the triangular section with Curviloft.
If you want a "model as clean as possible", it will have many faces to be smooth and you need a good computer...
Good luck, and show us your work.