noun
wood estimator; person who estimates lumber needs from building plans
A specialist role in traditional Japanese carpentry and architecture, estimating the types and quantities of wood required for a house based on the plans.
大工の棟梁は、木積もりに設計図を渡して必要な木材を見積もってもらった。
The master carpenter gave the plans to the wood estimator to have the necessary lumber estimated.
積もり means 'estimate' or 'calculation' in general, while 木積もり specifically refers to estimating wood for construction.
Compound of 木 (ki, 'wood') and 積もり (tsumori, 'estimate'). The reading きづもり reflects rendaku voicing of つもり to づもり.