Introduction: Valuation example of bill of quantities of residential buildings - 49 pages, doc format; Main content: calculated by volume according to the dimensions shown in the design drawing. Deduct the volume of reinforced concrete columns, beams, ring beams, cantilever beams, lintels, etc. embedded in the wall, and do not deduct the volume of beam heads, plate heads, etc. and holes with a single area of less than 0.3 ㎡, protruding from the wall