From the needs of commercial distribution, the standardization of lumber, tatami and doors were promoted, and consequently a carpenter could construct a building without drawing a design if he or she knew at least kiwari and had a simple floor plan.
このような、商品流通の事情から、材木や畳、建具の規格化が促進され、大工は、木割を頭に入れておけば、簡単な間取り図さえあれば、設計図面などなしで建物を建てることができた。