Yard as the unifier element of some Spaces
Yard as unifier element of some spaces creates harmony and coordination among the forming spaces around itself. Yard causes a group of side by side spaces to become uniform and firm space.
For example in school architecture, chambers on lateral ribs of yard have turned into one harmonious unit due to yard.
Since some of those spaces have common application in spite of yard, they get together and play their role as a group of solid chambers.
In fact, yard, in addition to regulate its environ spaces and to organize those in an order, makes them as a solid space, that their connection is usually possible only through the yard.