How To Form and Pour A Large Concrete Slab for a Barn

#EverythingAboutConcrete #MikeDayConcrete
This video is about the most difficult forming and pouring concrete slab we had to do in 2022.
It was a 70 foot by 40 foot six inch thick concrete slab with the edges thickened to 16 inches.
The sub-base was sand, thus making it difficult for our stakes / pins to hold the forms in place.
The taller & thicker edges put a lot of pressure on the forms when the concrete is poured in place.
The forms want to move outwards so we have to install a lot of braces holding the forms straight.
The sand isn't compacted enough, like good gravel would be, to hold the braces so the forms want to bow out.
Using the sand for the sub-base made our jobs forming and pouring this slab more than twice as difficult than it should have been.

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