Hello all,,   just a quick question before I send it off to the enginner, has anybody used beam and block for external use?    as you can see by the pictures I have a retaining wall which is set back from the house.. I’m looking to bring a block and beam from the outer skin of the house and sit on a frame/retaining wall and this use this base as our patio screed over the top and then slab..    has anyone used beam and block for external use before? What I was thinking