IS 1200 : 2000Method of measurement of building and civil engineering works: Part11 paving, floor finishes dado and skirting

IS 1200 is the Method of Measurement of Building and Civil Engineering Works — a multi-part series that standardizes how each trade is measured, billed, and verified across India. Part 11 specifically covers painting, polishing, varnishing, and allied finishes — the rules for what counts as a 'unit' of painting work and how it's invoiced.

It is the BOQ-author's bible for the paint trade. Used by: - CPWD, MES, MoRTH, PWDs — all reference IS 1200 by clause in their measurement protocols - PMC firms — for monthly running-account bill (RA bill) verification - Contractors — for raising RA bills; pre-agreed measurement avoids disputes - QS firms — for tender BOQ rate-analysis

If you've ever argued about whether moulded cornices, beadings, or jaalies are billed by 'sq m of girth' or 'running metre', this is the document that settles it.

1. General principle (Clause 3): paint work is measured by area actually painted, in square metres, with deductions for openings > 0.5 m².

2. Plain surfaces (Clause 4): walls, ceilings, parapets — straight area × number of coats. The 'coats' don't multiply the area — they're priced into the rate.

3. Doors and windows (Clause 5): - Panelled / glazed doors and windows: measured as 'flat area' × multiplier per Table 1 - Panelled door (both sides painted): area × 1.5 - Fully glazed window: area × 0.5 (only frame is painted) - Partly glazed shutter: area × 0.8 - The multiplier accounts for the fact that a panelled door has more painted girth than its flat area suggests - Frame is included in the shutter measurement — NOT measured separately

4. Grills, railings, jaalies (Clause 6): measured by 'flat area enclosed by extreme outline' × factor per Table 2. Pierced grills typically 1.0× factor (assumes both sides painted with normal coverage); decorative cast-iron railings 1.5× to 2.0×.

5. Pipes and small items (Clause 7): - Pipes ≤ 200 mm dia: measured by running metre, by diameter category - Pipes > 200 mm: measured by sq m of girth × length - Trusses, structural steel: by sq m of girth measured around the section profile

6. Deductions (Clause 8): openings > 0.5 m² are deducted. Single openings ≤ 0.5 m² (e.g., switch boxes, AC vents) are NOT deducted. Half-opening rule: if half the wall is open, you still measure the unbroken half of the wall.

7. French polishing, varnishing, distempering, enamelling — same area rules as painting, but rates differ by finish per the BOQ schedule.

Problem: A 4 m × 5 m × 3 m room. Two panelled doors (1.0 × 2.1 m each). One steel-framed window (1.5 × 1.2 m, fully glazed). One ceiling fan (1 hole, 0.05 m²). Internal acrylic emulsion paint, two coats on walls + ceiling; enamel paint on both door shutters + frames; enamel paint on window frame.

Walls (gross): perimeter × height = 2 × (4 + 5) × 3 = 54 m²

Less door openings (both leaves)**: 2 × (1.0 × 2.1) = 4.2 m² — each > 0.5 m², deducted ✓

Less window opening: 1.5 × 1.2 = 1.8 m² — > 0.5 m², deducted ✓

Less ceiling fan hole: 0.05 m² — < 0.5 m², NOT deducted

Net wall paint area: 54 − 4.2 − 1.8 = 48.0 m²

Plus ceiling: 4 × 5 = 20.0 m²

Total internal emulsion paint: 48.0 + 20.0 = 68.0 m² (× 2 coats already priced into the rate)

Doors enamel (panelled, both sides, multiplier 1.5): 2 × (1.0 × 2.1) × 1.5 = 6.3 m²

Window frame enamel (fully glazed, multiplier 0.5): 1 × (1.5 × 1.2) × 0.5 = 0.9 m²

This is the format every CPWD/PWD RA bill follows. Disputes typically arise on: (a) panel-door multipliers — verify spec is 'panelled' not 'flush', (b) corner deductions, (c) whether ceiling fan boxes count as openings.

1. Forgetting the multiplier on panelled doors — pricing at flat area (1.0× instead of 1.5×) under-pays the contractor by 33%. Most disputes are here.

2. Deducting openings < 0.5 m² — switchboards, AC vents, sockets are NOT deducted. Contractors over-claim by ignoring this rule; PMs over-deduct by enforcing it incorrectly. Read Clause 8 of Part 11 directly.

3. Measuring frames separately when shutters are measured per Table 1 — Table 1 multipliers include the frame area. Measuring frame again is double-counting.

4. Wrong factor for grills — pierced jaalies are 1.0×; ornamental cast-iron railings 1.5×; trellis-work 2.0×. The contractor's intuition is to claim 2.0× for everything; the PM's intuition is to claim 1.0×. The factor depends on actual girth — measure a sample section before agreeing.

5. Counting primer coats as paint — primer is usually billed separately, or included in the paint item rate. NEVER measure primer + topcoat as 2 × paint area unless the BOQ explicitly says so.

6. Not establishing measurement protocol pre-execution — if BOQ doesn't cite IS 1200 Part 11, write a project-specific measurement protocol into the contract. This avoids 'his book vs my book' disputes at billing time.

• IS 1200 Part 1:1992 — Earthwork measurement
• IS 1200 Part 2:1974 — Concrete works
• IS 1200 Part 4:1976 — Brick work
• IS 1200 Part 5:1982 — Stone masonry
• IS 1200 Part 8:1993 — Steel work and iron work
• IS 1200 Part 12:1976 — Plastering, pointing and finishing works
• IS 1200 Part 22:1982 — Joinery
• IS 2395 Part 1 — Painting concrete, masonry and plaster surfaces (workmanship code; paired with measurement per IS 1200 Part 11)
• CPWD Specifications 2019 — Volume on Finishing Works; references IS 1200 Part 11 verbatim
• MES SSR / MoRTH 5th Revision — same; IS 1200 is the master
• IS 5410:1992 — Cement paint composition and testing
• IS 5411:2006 — Plastic emulsion paint specification
• IS 158:1981 — Ready-mixed paint, brushing, bituminous

IS 1200 Part 11:2000 is stable — minor amendments since 2000 but no major revision. The measurement principles are sound and universally accepted across CPWD, state PWDs, and private projects. The pain points are not in the standard itself but in enforcement: many junior engineers and contractor billing teams don't read the standard, fall back on 'how we did it last project', and end up disputing.

Pro tip for PMC/QS firms: at the kick-off meeting, agree explicitly that all paint measurement will follow IS 1200 Part 11:2000 (cite by clause for the door multiplier rule and the 0.5 m² deduction threshold). Put it in writing in the contract or first MOM. This eliminates 80% of monthly billing disputes.

For specialised finishes (texture paints, decorative finishes, ACP cladding): IS 1200 Part 11 doesn't formally cover these. Use the same area-based logic but agree the multiplier upfront in the BOQ rate-analysis sheet. Texture finishes typically billed at 1.0× area (no shutter-multiplier needed) plus separate item for primer/base coat.