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Conventional framing is a foundation (poured concrete or concrete masonry units also known as 8" block - maybe what you are calling a brick?) with a wood sill plate with floor joists sitting on top of it and a band joist going around the outside of it, and plywood subflooring over all of that. This would mean about 12" of wood making up the difference between the foundation and the floor of the house. This would be the same whether it is a basement or a crawl space.
It sounds like you have masonry right up to the threshold of your door. If that is the case, you do not have conventional framing, so don't worry about it.
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