ADVERTISEMENT
See Inside July 2002

The Power of Gravity

Explore the marvels of engineering inside Hoover Dam
arc of concrete at Hoover Dam is just 45 feet thick at the top of the span. But it swells to 660 feet at its bottom to restrain more than 300 pounds per square inch of water pressure.



THE BUREAU OF RECLAMATION

This article is only available as a PDF.

Select an option below:

Customer Sign In

*You must have purchased this issue or have a qualifying subscription to access this content

Share this Article:

Comments

You must sign in or register as a ScientificAmerican.com member to submit a comment.
Scientific American Holiday Sale

Black Friday/Cyber Monday Blow-Out Sale

Enter code:
HOLIDAY 2014
at checkout

Get 20% off now! >

X

Email this Article

X