How they build skyscrapers?
Like the roots of a tree, a skyscraper’s foundation is actually laid below ground in order to create the most stability.Next, digging out dirt and sand is required in order to get the bedrock.

Once the foundation has been laid, the skeleton frame is constructed by connecting steel columns and beams in a grid pattern. Sometimes, reinforced concrete is used as well, in order to protect the steel from extreme temperature changes. The skeleton frame is strong enough to hold up the entire weight of the building.
The façade, usually made from stone, brick, metal, or glass, is laid over the skeleton frame to create the exterior wall of the building. The façade hangs on the frame like a curtain, but does not support the building in any way. Workers often begin constructing the façade on the ground floor of the building while the upper floors of the skeleton frame are still being erected.

As the façade rises, interior systems, such as electric wiring, telephone and internet cables, heating and cooling systems, and plumbing, are installed. After these systems are inspected, walls, floors, and ceilings are installed. In the final stages of construction, the interior of the building is painted and decorated.