Rebar Strength | National Geographic

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Rebar keeps the concrete frame of a building from collapsing. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world’s premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge …

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Scaffolding | LA Hard Hats

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Adjustable jack screws are used to precisely set the height of the next deck of the building. LA Hard Hats: Mudmen: http://channel.nationalgeographic.com/index.html/?source=4003 ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world’s premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo …

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Concrete Challenge | LA Hard Hats

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Concrete is laid down to create a rat slab, enabling builders to build up and down at the same time. LA Hard Hats: Rodbusters: http://channel.nationalgeographic.com/index.html/?source=4003 ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world’s premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and …

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The Girl With Eight Limbs | National Geographic

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Lakshmi Tatma was born with four arms and four legs, but also carries a rare parasitic conjoined twin that could kill her. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world’s premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo …

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