Topics » Science & Technology   March 29, 2012

The Dos and Don'ts of Earthquake-Resistant Construction

Good Gravel

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Bad BrickGood BrickBad GravelGood GravelHouses, Good and BadBad MasonryGood MasonryBad SandGood SandBad StoneGood Stone

Good Gravel

The best kind of gravel for mixing concrete is crushed stone.