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Why Don’t Skyscrapers Fall Down, M.5 IEM Thanaphat #5 Supitcha #9 …
Why Don’t Skyscrapers Fall Down
Introduction
A century ago, it was impossible to build tall buildings because of heavy structures.
Today, different building techniques and techonologies have advanced to make skyscrapers possible.
Nowaways, many cities in the world have skyscrapers.
Elevator (Lift) Technology
They were not as practical is the recent days
1800s The first passenger lift was installed in NYC department store
Vocabs
bedrock
(n.) = หินด่านใต้ดิน
vertical
(adj.) = ตั้งฉาก
conveniently
(adv.) = โดยสะดวก
horizontal
(adj.) = ตามขวาง
immense
(adj.) = มหึมา
exterior
(adj.) = ภายนอก
virtually
(adv.) = อย่างตามความจริง
tenant
(n.) = ผู้เช่าอยู่
skyscraper
(n.) = ตึกระฟ้า
stabilize
(v.)= ทำให้มั่นคง
Foundations and Steel Skeletons
The third step
Also build the steel skeleton with outer walls which supports almost all the weight of the building
The fourth step
The floors are then added to a new skyscraper, often one or two a day
The second step
Making the building‘s steel skeleton
Strong iron or metal beams are welded to create long vertical columns connected to horizontal beams at each floor level.
The fifth step
Stabalizing the skyscraper
The first step
Digging a bid foundation hole
Then, engineer had to shove massive concrete pillars into the Earth’s bedrock.
M.5 IEM
Thanaphat #5
Supitcha #9
Papimon #10
Pancheva #16
Tatta #24
Lalitpatra #31