Imagine you have to cross a raging river, and all you have is a 2x4 to get you across. As you walk out along the 2x4, it sags precariously.
What's actually happening is that the top of the 2x4 is being pushed together (in compression) and the bottom is being pulled apart (in tension).The 2x4 will break on the bottom if your weight exceeds its tensile strength.
The same thing happens to your concrete countertops when you pick them up to move them around your shop and install them. You're creating tension on the bottom of the countertops. Even the best concrete is strong in compression, but weak in tension. If you don't reinforce your countertops properly, you risk cracking or sudden breakage.
Jeff Girard explains more in this free video:
The Reinforcing 101 self-study course goes much further:
(Note: The course applies only to traditional precast concrete countertops. The principles of compression and tension still apply to GFRC slabs, but the reinforcement methods are different.)
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This essential self-study course, available electronically, costs just $79 and will allow you to make larger slabs with more confidence, move slabs around your shop sooner, install sooner and get paid sooner.
Order now using our online system, or call 888-386-7711. |