1. Steel
Have you ever wondered how skyscrapers came about? Before there were skyscrapers, there were towers. Made of heavy stone, towers had thick, sturdy walls, but the rooms were dark and cramped. The reason the towers were so dark was because having too many windows would weaken the structure. Soon Gothic cathedrals joined the quest for height. Long, stone arms, called ... , the first structure ever built where the outside walls did not carry the weight of the building. In order for Fuller's idea to work he needed a material and enough of that material to make a steel cage that could support the w...
- Word Count: 234
- Approx Pages: 1
- Grade Level: High School