Passive solar building design sometimes uses limited electrical and mechanical controls to operate dampers, insulating shutters, shades, awnings, or reflectors. Some systems enlist small fans or solar-heated chimneys to improve convective air-flow.
TL;DR Apartment Flat Roof Solar Design. Most concrete apartment roofs built after 1970 can carry a 4 to 8 psf ballasted array without retrofit.
Passive solar design refers to the use of the sun's energy for the heating and cooling of living spaces by exposure to the sun. When sunlight strikes a building, the building materials can reflect, transmit, or absorb the solar radiation.

Furthermore, visual representations like the one above help us fully grasp the concept of Apartment Building Passive Solar Design Permits.
Passive solar energy uses building design, orientation, and materials to naturally collect, store, and distribute the sun's heat for heating and cooling.
Designing Passive Solar Energy (The following design strategies are with respect to the Northern Hemisphere). 1- Location with respect to the sun: Optimum sun absorption is crucial for solar energy, which is why the project must be built in a way that takes full advantage of the sun during...

Everybody loves passive solar design. Back in the 1970s, passive solar was the essential first step for cold-climate builders. It was considered an approach with obvious advantages over complicated active solar schemes that required pumps, fans, and electronic controls.