Design in section!
Good designers work back and forth between plans and sections, allowing each
to inform the other. Poor designers fixate on floor plans and draw building sections
afterward as a record of decisions already made in plan. But sections, it could be
said, represent 50 percent of the experience of a building. In fact, some sites (such
as those with steep slopes) and building types (those requiring tall interior spaces,
careful management of connections between floors, or unusual attention to daylighting)
require that you design in section before you think about floor plans