how are the weight on the first floor of a skyscraper able to hold the weight of over a 100 floors?

Question

how are the weight on the first floor of a skyscraper able to hold the weight of over a 100 floors?

In: 570

Answer 1

Reinforced concrete is a mixture of heavy duty concrete poured into moulds containing a thick web of hardened steel rebar. The concrete itself is extremely hard and can hold heavy loads, the rebar is to keep the concrete stable and prevent cracks. Now some of these sky scrapers may have 50-60 main pillars that hold up the rest of the structure, balancing the load evenly to prevent over stressing the concrete. Lots of solid engineering and testing goes into the architecture and building materials used in each sky scraper.