In the instructions the hearth is poured onto the base and plywood supports and is 3 1/2" thick, with the rebar in it.
Can I make the support hearth thinner if there is more support from the base, ie if the base not only goes around the edge, but also comes across the middle from both sides, so like a square with a cross in it?
If so how much thinner could I go?
Can I make the support hearth thinner if there is more support from the base, ie if the base not only goes around the edge, but also comes across the middle from both sides, so like a square with a cross in it?
If so how much thinner could I go?
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