When you have an open atrium inside, you are able to see what others are doing from within the building, and you have a better way to control light, and when you place the mass and the walls in the perimeter, then you are preventing direct sun radiation.
Kada imate otvoren atrij iznutra, u mogućnosti ste vidjeti što ostali rade iz unutrašnjosti zgrade, i imate bolji način kontrole svjetlosti, te kad su zidovi i masa na vanjskom rubu, tada spriječavate  direktnu sunčevu radijaciju.