Ways to save the planet: Swap concrete for wood
People Fixing the World
00:00
The Strength to Weight Ratio
A hydraulic press is used to test the strength of materials. A small beam made of spruce took pase only two tons before it started to break. He repeated the test with a steel bar that was smaller, but the same weight. It's the strength to weight ratio that really matters in construction.
Transcript
Play full episode
