I want to know the best practice for this
If i have a room and AC ducts above falce ceiling +beams is making a problem . So i need to make a design including this
Architectural floor with finishes . Concrete beams under it . Ac ducts in the space between beams and false ceiling . And of course columns should be presented . So shall i use structure floor under architectural floor as finishes ? And how to make beams and ducts ?
2nd thing . How to make my default 3d view during working on a model as 3point prespective instaid of the isometric ?