Pick up the incorrect statement from the following:

Solution (By Examveda Team)

The question asks for the incorrect statement among the given options related to estimating and costing in civil engineering. Here's the analysis:

No deduction is made for the volume occupied by reinforcement:
This statement is correct. In civil engineering estimating and costing, the volume occupied by reinforcement is generally not deducted from the total volume of concrete as it is considered part of the structure.

No deduction is made for the openings up to 0.1 sq.m:
This statement is also correct. Openings in a structure that are less than or equal to 0.1 square meters are typically not deducted from the volume of the concrete for estimating purposes.

No deduction is made for volumes occupied by pipes, not exceeding 100 sq.cm in cross-section:
This statement is correct as well. For small pipes with a cross-sectional area not exceeding 100 square centimeters, deductions are not usually made from the concrete volume. Since all the statements are correct, the option None of these is the correct answer to indicate that there are no incorrect statements among the provided options.