Hey em07,
I think the solid landscaping retaining wall blocks designed to create curves and circles will work for your occasional use firepit. They sell them at the HD and Lowe's for $3-4 a piece.
They make a special landscaping stone glue used for these blocks that binds them together. I'm not sure how much heat it can take, so I'd read the label. But I've tried to break the glue bond between old retaining wall blocks and it's pretty tough stuff.
I would dig a circular trench about 12 inches deep and fill it with clean stone or a crushed gravel to make a base for the wall. Tamp it down with a metal tamper to compact the gravel. Then build the wall. It will help keep your heavy wall from sagging and warping.
Best of luck.
I think the solid landscaping retaining wall blocks designed to create curves and circles will work for your occasional use firepit. They sell them at the HD and Lowe's for $3-4 a piece.
They make a special landscaping stone glue used for these blocks that binds them together. I'm not sure how much heat it can take, so I'd read the label. But I've tried to break the glue bond between old retaining wall blocks and it's pretty tough stuff.
I would dig a circular trench about 12 inches deep and fill it with clean stone or a crushed gravel to make a base for the wall. Tamp it down with a metal tamper to compact the gravel. Then build the wall. It will help keep your heavy wall from sagging and warping.
Best of luck.
