Measurement units — pointing, plastering, glazing, striking: Select the correct statement about the units commonly used for measuring finishing items such as pointing, plastering, glazing, and striking in building works.

Introduction / Context:
Measurement rules standardize how to quantify building work for estimation and payment. Finishing items that cover surfaces (rather than adding appreciable thickness/volume) are typically measured by area in square metre for clarity and uniformity in BOQs.

Given Data / Assumptions:

• Surface treatments and finishes are considered.
• Standard departmental/CPWD conventions apply.
• “Striking” refers to struck finishes (e.g., struck pointing or struck surface treatment) measured as finished area.

Concept / Approach:

Any operation that covers or treats a surface—like pointing between joints, plastering coats, glazing panes, or providing a specific struck finish—is measured in square metre. Rates reflect thickness, mix, and class, but the measurement unit remains area.

Step-by-Step Solution:

Verification / Alternative check:

Standard measurement handbooks list these items in square metre; only special cases (e.g., bead length, small panes by number) deviate with clear notes.

Why Other Options Are Wrong:

• Each of (a)–(d) is correct; hence the collective correct choice is “All the above”.

Common Pitfalls:

• Confusing volumetric masonry measurement with surface finishes.
• Mixing linear measurement (running metre) used for beading or grooves with surface items.

Final Answer:

All the above.