Brick-lined valve well, I'm referring to the 2008 Construction Quota 3-46: Brick-lined inspection well with a circular depth of 3m or less (M5 cement mortar). The measurement unit for this quota is 10m³. How much work is involved in constructing one valve well, and how is it calculated? The diameter of the valve well's opening is 700mm, and the depth is 1.0 meter. I'm not very familiar with construction quotas. What are your thoughts?

The required amount depends on the design diameter and depth. Look up the atlas, where you can find the engineering quantities for this section, such as the amount of concrete for the closing section and the masonry volume, etc.