While preparing a detailed estimate for civil works, specify the required recording precision for each quantity: dimensions (length), areas, and volumes to be entered in the measurement book.

Introduction / Context:
Consistent precision in measurement records ensures transparent contractor billing, accurate cost control, and reliable audits. Standardized rounding prevents disputes by making the level of detail explicit across all items in a detailed estimate.

Given Data / Assumptions:

• Standard public-works/IS method-of-measurement practices apply.
• Quantities are logged in a measurement book before abstracting and BOQ preparation.
• Length, area, and volume are measured for different items.

Concept / Approach:
The commonly adopted precisions are: length to 0.01 m, area to 0.01 sqm, and volume to 0.01 cum. Adhering to these thresholds reduces rounding bias and supports consistent rate application when abstracting quantities for the estimate and subsequent payments.

Step-by-Step Solution:
1) Length entries: record to the nearest 0.01 m for linear items (e.g., foundations lines, pipe runs).2) Area entries: compute to the nearest 0.01 sqm for plastering, painting, and flooring.3) Volume entries: compute to the nearest 0.01 cum for earthwork and concrete.4) Summaries: carry forward quantities consistently with the same precision to abstracts.

Verification / Alternative check:
Departmental manuals and SOR introductions reiterate these same precisions, ensuring harmonization between design, execution, and finance teams.

Why Other Options Are Wrong:

• Any single statement alone omits the full set; the correct practice encompasses all three precisions together.

Common Pitfalls:

• Rounding too early in calculations, compounding errors.
• Using inconsistent precision across items, complicating auditing.

Final Answer:
All the above.