| A floor plan for a wooden building drawn by a carpenter 
on a thin piece of board. The plan does not include detail, but the carpenter 
follows the rules of Japanese wooden architecture to cut the timbers and bore 
mortises based on this plan. However, today it is normal practice for an architect 
to make design drawings and floor plans, even for wooden buildings. Nevertheless 
there are still some carpenters who follow traditional methods of construction 
for wooden houses, and draw their own ita-zu. 
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