Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 12 - Reading Check Questions (Comprehension) - Page 240: 14

Answer

I-beams have material removed in the neutral layer, where much less strength is needed. This saves material and money, making the beam lighter while not compromising too much on the strength.

Work Step by Step

This is discussed on page 233.
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