Deivids in the YT series Do and Be Different Family says @13:05 that he's leaving the rebar out of the concrete extension he's building contiguous to his old farmhouse because....extension must expand and contract as the house does in winter and summer. Otherwise, if extension is connected to the house with rebar it will crack, and will crack farmhouse. He's also not building walls, more like pouring a foundation with a pump house embedded in it. They're using big building stones as filler/reinforcement.
He's not a construction guy, but a DIYer like everyone else, and possibly the hardest-working young man in the universe.
Ready for your close up, Mat the Jungle Slayer?
I'll be popping the speshul Catalan espelette-flavored hot tamale popcorn.
This spicy upscale popcorn combines two international ingredients: ground French peppers and Spanish almonds.
www.epicurious.com