For centuries timber has been a plentiful resource in Bhutan. Houses, palaces, dzongs, temples, bridges and utilitarian items for the home and the field are made of wood. The carpenter also decides on questions of planning and measuring.
Measurements dictated by the sacred scriptures have to be adhered to; knowing how to build therefore also requires an understanding of the sacred texts. As all the zorig chusum*, shingzo reflects a devotional act which links the craftspeople to their personal deities.