The trick revealed! Looking in the crawlspace I found this is what the homeowner/builder chose to hold up the addition with. A couple of 2x6 joists and hanger brackets. No chance this will not fail and in fact is failing as a decided slope to the floor inside was evident even though the addition was only done in the last year or so. With no poly on the dirt floor in large parts of the crawlspace, what happens when the nails on those brackets rust from the dampness. Had to advise my client no building inspector ever saw this nor was it likely any permits were even taken out.