Season 9 Episodes20
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7.4
Suspension Bridge, Crossbows
7.4/10 · 9 votesAug 23, 201222 min
Ranked #8 of 17 in Season 9•matches the season avg
How do they make steel cables strong enough to hold up a 50,000 tonne bridge; why do modern hunters use medieval weapons; and how do shops know which clothes sizes...
Seasons17
Episode Summary
"Suspension Bridge, Crossbows" is episode 8 of How Do They Do It? season 9. It scored 7.4/10 from 9 votes, ranking #8 of 17 episodes this season (season average 7.4). It aired on August 23, 2012.