Published by: Bureau of Indian Standards (BIS)
Scope:
This part lays down the rules for measuring brickwork (in walls, partitions, columns, arches, etc.) in building and civil engineering projects.
1. Scope
- Applies to all types of brickwork (burnt clay bricks, fly ash bricks, etc.).
- Covers both load-bearing and non-load-bearing walls.
- Includes special cases such as arches, honeycomb walls, decorative brickwork, etc.
2. Unit of Measurement
- Brickwork: measured in cubic metres (m³).
- Brickwork in honeycomb, jali, openwork, edging, etc.: measured in square metres (m²).
3. Classification of Brickwork
Brickwork must be classified and measured separately based on:
- Class/Type of brick (e.g., common burnt clay brick, fly ash brick).
- Thickness of wall (half brick, one brick, one-and-a-half brick, etc.).
- Type of mortar (cement mortar, lime mortar, mud mortar, etc.).
- Location (foundation, plinth, superstructure, etc.).
- Special features (arched work, ornamental, reinforced brickwork, honeycomb).
4. Method of Measurement
- General brickwork (walls, columns, etc.):
- Measured in cubic metres of solid work.
- Thickness described as ½ brick (100 mm), 1 brick (200 mm), 1½ brick (300 mm), etc.
- Description must state brick class, mortar type, and thickness.
- Half-brick thick walls (partition walls):
- Measured in square metres (m²).
- Supported on RCC/other walls and bonded properly.
- Arches, pillars, cornices, etc.:
- Measured in m³, with description stating shape and type.
- Honeycomb/Jali/Open Brickwork:
- Measured in m².
- Net area of solid portion considered.
5. Deductions
- For openings, doors, windows, etc.:
- 0.1 m² → Deduct full opening.
- ≤0.1 m² → No deduction.
- For ends of joists, beams, rafters, etc.:
- 0.01 m² cross-section → Deduct.
- ≤0.01 m² → No deduction.
- For circular or segmental openings: area/volume calculated as per geometry and deducted.
- For reinforced brickwork: deduction made for reinforcement volume if >0.01 m³.
6. Extra Measurements
- Arches: measured separately stating type (flat, segmental, semicircular).
- Ornamental/Decorative brickwork: measured separately with description.
- Reinforced brickwork (RBC): measured separately, reinforcement under Part 5 (steel).
- Brick edging (for roads/pavements): measured in m² or running metres (m) depending on specification.
7. Key Notes
- Thickness is always expressed in terms of brick (½, 1, 1½, etc.), not just mm.
- For honeycomb brickwork, voids are not deducted separately; only solid portion is measured.
- Mortar joints are included in measurement (no deductions).
- Plastering/pointing over brickwork is measured separately (covered in Part 12 – Plastering & Pointing).
8. Quick Takeaways
- Brickwork = m³, except ½ brick partitions & honeycomb = m².
- Deductions only for openings >0.1 m².
- Small recesses/embedded items ignored.
Reinforced, ornamental, and arch work measured separately.
