IS 1200 Part 151987AI Search Enabled✦ AI Generated

Method of measurement of building and civil engineering works, Part 15: painting, polishing, varnishing etc

IS 1200 Part 15 (1987) specifies the standardized method of measurement for painting, polishing, varnishing, and related finishing works in building and civil engineering projects. It provides detailed guidelines on how to quantify these surface treatments accurately, including measurement units, multiplying factors for uneven surfaces, and treatment of various materials like wood, steel, and corrugated sheets. This standard is essential for engineers, contractors, and quantity surveyors involved in estimating, planning, and executing finishing trades in construction and civil engineering works across India.

15Sections
49Clauses Indexed
AI Search Ready
1987Edition
Methods of Measurement of Works of Civil EngineeringCategory
Alternative search terms: IS 1200 Part 15 PDF, IS 1200 Part 15 pdf free download, IS 1200 Part 15 free download pdf, IS1200Part15 PDF, IS-1200-Part-15 PDF, IS 1200 Part 15 1987 PDF, IS 1200 Part 15:1987 PDF, IS 1200 Part 15-1987 PDF, IS 1200 Part 15 (1987) PDF, IS 1200 Part 15 1987 edition PDF, IS 1200 Part 15 edition 1987 PDF

What This Standard Covers

IS 1200 Part 15 (1987) specifies the standardized method of measurement for painting, polishing, varnishing, and related finishing works in building and civil engineering projects. It provides detailed guidelines on how to quantify these surface treatments accurately, including measurement units, multiplying factors for uneven surfaces, and treatment of various materials like wood, steel, and corrugated sheets. This standard is essential for engineers, contractors, and quantity surveyors involved in estimating, planning, and executing finishing trades in construction and civil engineering works across India.

Who Uses This Standard

  • Civil Engineers
  • Quantity Surveyors
  • Construction Project Managers
  • Contractors specializing in finishing works
  • Architects
  • Cost Estimators
  • Building Inspectors

Key Topics Covered

Measurement units and rounding rules
Methods for measuring painting on different surfaces
Multiplying factors for uneven and textured surfaces
Measurement of polishing, varnishing, and wood preservatives
Treatment of fabricated steel and iron work
Measurement of small articles and repair painting
Measurement of painting on doors, windows, gates, and shutters
Measurement of painting on corrugated and asbestos cement sheets
Inclusion of preparatory work like knotting and priming
Measurement of writing letters and figures
Handling of special finishes and colors
Measurement of tarring and protective coatings
Rules for clubbing and describing items
Measurement of scaffolding and special structures
Treatment of openings and fittings in measurement

Table of Contents

1Scope

Scope & Key Specifications from IS 1200 Part 15 (1987) — Painting Measurement


1. Scope (Clause 3.10)

  • Painting repair work up to 1 m² is categorized as:
    • a) ≤ 0.1 m²
    • b) > 0.1 m² and ≤ 0.5 m²
    • c) > 0.5 m² and ≤ 1 m²
  • Areas > 1 m² measured as per Clause 2.6.

2. Equivalent Plain Areas of Uneven Surfaces (Table 1)

Description of WorkMeasurement BasisMultiplying Factor (per side)
Panelled/framed joineryMeasured flat, including frame1.30
Flush joineryMeasured flat, including frame1.20
Fully glazed/gauzed joineryMeasured flat, including frame0.80
Venetianed/louvred joineryMeasured flat, including frame1.80
Weather boardingMeasured flat1.20
Tile/slate batteningMeasured flat, no deduction for openings0.80 (all over)
Trellis (Jaffri) workMeasured flat, no deduction for openings2 (all over)
Carved or enriched workMeasured flat2 (per side)
Steel roller shuttersMeasured flat (opening size)1.10 (per side)
Fully glazed steel doors/windowsMeasured flat, including frame0.50 (per side)
Collapsible gateMeasured flat (opening size)1.50 (all over)

3. Correction for Corrugated and Patterned Surfaces (Clause 3.6)

Surface TypeArea Increase Percentage
Corrugated sheets+14%
Nainital pattern roof (plain+rolls)+10%
Nainital pattern
2General Rules

IS 1200 Part 15 (1987) - General Rules Summary

Key Specifications & Multiplying Factors for Uneven Surfaces (Clause 3.6 & Table 1)

DescriptionMultiplying Factor (Area Increase)
Corrugated sheets+14% (multiply area by 1.14)
Nainital pattern roof (plain sheets with rolls)+10% (multiply area by 1.10)
Nainital pattern roof with corrugated sheets+25% (multiply area by 1.25)
Asbestos cement sheets, corrugated+20% (multiply area by 1.20)
Asbestos cement sheets, semi-corrugated+10% (multiply area by 1.10)

Painting Measurement Multiplying Factors (Clause 1.10 & Table 1)

DescriptionMeasurement BasisMultiplying Factor
Panelled/framed joinery (incl. frame)Measured flat (not girthed)1.30 (each side)
Flush joinery (incl. frame)Measured flat (not girthed)1.20 (each side)
Fully glazed/gauzed joineryMeasured flat (not girthed)0.80 to 0.50 (each side)
Trellis (one/two-way)Measured flat overall, no deduction for gaps2 (painting all over)
Gates, balustrades, grills, railingsMeasured flat overall, no deduction for gaps1 (painting all over)
Steel roller shuttersMeasured flat (opening size)1.10 (each side)
Collapsible gateMeasured flat (opening size)1.50 (painting all over)

Notes:

  • Measurement is generally flat area, not girthed (no perimeter addition).
  • No deduction for open spaces in grills, trellis, gates.
  • For composite doors/windows, measure parts separately with appropriate factors.
  • Repair painting for areas ≤1 m² categorized by
3Measurement of Painting

IS 1200 Part 15: Measurement of Painting — Key Points

1. Measurement Basis (Clause 3.5)

  • Painting on different work types measured separately.
  • Surfaces described as flat or girthed.
  • Uneven surfaces converted to equivalent plain areas using Table 1 multiplying factors.

2. Repair Work (Clause 3.10)

  • Painting repair areas up to 1 m² classified as:
    • a) ≤ 0.1 m²
    • b) > 0.1 m² and ≤ 0.5 m²
    • c) > 0.5 m² and ≤ 1 m²
  • Areas > 1 m² measured as per Clause 2.6.

3. Equivalent Plain Areas (Table 1 Extract)

DescriptionMeasurement BasisMultiplying Factor (per side)
Panelled/framed/ledged joineryMeasured flat (not girthed)1.30
Flush joineryMeasured flat (not girthed)1.20
Fully glazed/gauzed joineryMeasured flat (not girthed)0.80
Fully venetianed or louvred joineryMeasured flat (not girthed)1.80
Weather boardingMeasured flat (not girthed)1.20
Tile and slate batteningMeasured flat overall0.80 (all over)
Trellis (one-way or two-way)Measured flat overall2.00 (all over)

4. Notes

  • Edges, chocks, cleats included in measurement.
  • Supporting framework generally excluded.
  • For uneven surfaces, multiply measured flat area by the factor for equivalent plain area.

Summary Formula

[ \text{Equivalent Plain Area} = \text{Measured Flat Area} \times \text{Multiplying Factor} ]


flowchart LR
    A[Measured Flat Area] --> B[Select Description of Work]
    B --> C[Apply Multiplying Factor from Table 1]
    C --> D[
4Application of Sizing, Staining and Varnishing

IS 1200 Part 15: Application of Sizing, Staining, and Varnishing on Woodwork

Key Specifications & Measurement Rules

  • Clause 4.1: Measurement follows the general provisions in Clause 3.
  • Clause 3.10: For painting repair work up to 1 m², categorize areas as:
    • a) ≤ 0.1 m²
    • b) > 0.1 m² and ≤ 0.5 m²
    • c) > 0.5 m² and ≤ 1 m²
  • Areas > 1 m² measured as per Clause 2.6.

Measurement of Uneven Surfaces (Clause 3.5 & Table 1)

DescriptionMeasurement BasisMultiplying Factor (per side)
Panelled/framed/ledges joineryMeasured flat (not girthed)1.30
Flush joineryMeasured flat (not girthed)1.20
Fully glazed/gauzed joineryMeasured flat overall0.80
Partly panelled & glazedMeasured flat (not girthed)1.00
Fully venetianed or louvred joineryMeasured flat (not girthed)1.80
Weather boardingMeasured flat (not girthed)1.20
Wood shingle roofingMeasured flat (not girthed)1.10
Tile and slate batteningMeasured flat overall0.80
Trellis (one-way or two-way)Measured flat overall2.00
Guard bars, balustrades, gates, grills, etc.Measured flat overall1.00

Additional Notes

  • Polishing (Clause 5.1): Includes preparatory work and bodying-in; measured in m².
  • Preservative Treatment (Clause 6.1): Measured in m² regardless of girth or size.

Summary Formula for Surface Area to be Painted/V

5Polishing

IS 1200 Part 15: Polishing - Key Points & Measurement

1. Polishing Definition (Clause 5.1)

  • Includes all preparatory work and bodying-in.
  • Measured in square metres (m²) according to Clause 3.
  • Articles may also be enumerated individually.

2. Measurement of Uneven Surfaces (Table 1, Clause 3.5)

Use multiplying factors to convert uneven surfaces to equivalent plain areas for polishing:

Description of WorkMultiplying Factor (per side)
Panelled/framed & braced joinery1.30
Flush joinery1.20
Fully glazed/gauzed joinery0.80
Partly panelled & partly glazed joinery1.00
Fully venetianed or louvred joinery1.80
Weather boarding1.20
Wood shingle roofing1.10
Boarding with cover fillets and match boarding1.05
Tile and slate battening0.80
Trellis (one-way or two-way)2.00
Guard bars, balustrades, gates, grills, expanded metal1.00

3. Measurement Notes:

  • Measure flat (not girthed) including frames (chowkat).
  • Edges, chocks, cleats are included.
  • No deduction for open spaces in trellis, grills, etc.
  • Supporting framework not measured separately.

Summary Formula for Polishing Area:

[ \text{Equivalent Polishing Area} = \text{Measured Flat Area} \times \text{Multiplying Factor} ]


This ensures accurate quantification of polishing work on complex wood surfaces per IS 1200 Part 15.

6Preservative Treatment

IS 1200 Part 15: Preservative Treatment Key Points

Measurement of Preservative Treatment (Clause 6.1)

  • Surface application of wood preservatives is measured in square metres (m²), regardless of girth or size.
  • Follow general measurement provisions as per Clause 3.

Painting & Repair Work (Clause 3.10)

  • Painting areas up to 1 m² are enumerated as:
    • a) ≤ 0.1 m²
    • b) > 0.1 m² and ≤ 0.5 m²
    • c) > 0.5 m² and ≤ 1 m²
  • Areas > 1 m² measured as per Clause 2.6.

Equivalent Plain Areas of Uneven Surfaces (Table 1, Clause 3.5)

Description of WorkMultiplying Factor (for each side)
Panelled/framed & braced joinery1.30
Flush joinery1.20
Flush shutter fully glazed/gauzed joinery1.20 / 0.80
Partly panelled & partly glazed/gauzed joinery1.00
Fully venetianed or louvred joinery1.80
Weather boarding1.20
Wood shingle roofing1.10
Boarding with cover fillets and match boarding1.05
Tile and slate battening0.80
Trellis/Jaffri work (one-way or two-way)2.00
Guard bars, balustrades, gates, gratings, grills1.00

Application of Sizing, Staining, Varnishing (Clause 4.1)

  • Measured per general provisions in Clause 3.

Summary Formula for Surface Area of Uneven Wood Surface:

[ \text{Equivalent Plain Area} = \text{Measured Flat Area} \times \text{Multiplying Factor} ]


This enables accurate estimation of preservative treatment quantities by converting uneven surfaces to equivalent flat areas.

flowchart LR
    A[Measure Flat Area (m²
7Tarring

IS 1200 Part 15 - Tarring Measurement & Specifications

Key Points:

  • Clause 7.1: Tarring is measured like painting, following Clause 3 provisions.
  • Clause 3.10: For repair painting/tarring up to 1 m², categorize as:
    • a) ≤ 0.1 m²
    • b) > 0.1 m² to ≤ 0.5 m²
    • c) > 0.5 m² to ≤ 1 m²
  • Areas > 1 m² measured as normal surface area (Clause 2.6).

Surface Area Multiplying Factors (for uneven surfaces, apply to measured flat area):

DescriptionMultiplying Factor (each side)
Panelled/framed joinery1.30
Flush joinery1.20
Fully glazed/gauzed joinery0.80
Venetianed/louvred joinery1.80
Weather boarding1.20
Wood shingle roofing1.10
Tile and slate battening (all over)0.80
Trellis (painting all over)2.00
Carved/enriched work2.00
Steel roller shutters1.10
Plain sheet steel doors/windows1.10
Fully glazed steel doors/windows0.50
Collapsible gate (painting all over)1.50

Corrugated Sheet Area Increases (add to plain area):

Surface TypeIncrease %
Corrugated sheets14%
Nainital pattern roof (plain)10%
Nainital pattern with corrugated25%
Asbestos cement sheets, corrugated20%
Asbestos cement sheets, semi-corrugated10%

Summary Formula for Tarring Area:

[ \text{Effective Area} = \text{Measured Flat Area} \times \text{Multiplying Factor} \times (1 + \text{

8Writing Letters and Figures

IS 1200 Part 15 - Writing Letters and Figures (Clause 8)

  • Clause 8.1: Letters, figures, and similar items must be enumerated specifying:
    • Height
    • Form or style (e.g., block, italics)
    • Punctuation marks (stops, commas, hyphens) are included in the item count.

Key Points for Measurement & Specification:

ParameterDetails
HeightSpecify exact height of letters/figures
Form/StyleBlock, Italics, etc.
PunctuationIncluded within the item

Related Painting Measurement (Clause 3.10 & Table 1):

  • Painting areas up to 1 m² are categorized as:

    • a) ≤ 0.1 m²
    • b) > 0.1 m² and ≤ 0.5 m²
    • c) > 0.5 m² and ≤ 1 m²
  • Uneven surfaces are converted to equivalent plain areas using multiplying factors (Table 1, Clause 3.5):

Surface TypeMultiplying Factor (per side)
Panelled/framed joinery1.30
Flush joinery1.20
Fully glazed/gauzed joinery0.80
Venetianed/louvred joinery1.80
Weather boarding1.20
Wood shingle roofing1.10
Tile and slate battening0.80
Trellis (one-way or two-way)2.00
Guard bars, balustrades, gates, grills, railings1.00

Summary:

  • Enumerate letters/figures by height and style.
  • Include punctuation marks in count.
  • Use equivalent plain area for uneven surfaces with multiplying factors.
  • Painting measurement categories for small areas are defined for repair work.

flowchart TD
    A[Letters & Figures] --> B{Specify}
    B --> C[Height]
    B -->
9Measurement of Small Articles and Repair Work

IS 1200 Part 15: Measurement of Small Articles & Repair Work

Key Specifications:

  • Painting in repair work up to 1 m² (Clause 3.10):
    • a) ≤ 0.1 m²
    • b) > 0.1 m² and ≤ 0.5 m²
    • c) > 0.5 m² and ≤ 1 m²
  • Areas >1 m² measured as per Clause 2.6.

Measurement Rules (Clause 2.4):

  • Dimensions to nearest 0.01 m
  • Areas to nearest 0.01 m²

Table 1: Equivalent Plain Areas of Uneven Surfaces

DescriptionMeasurement MethodMultiplying Factor (for each side)
Panelled/framed joineryMeasured flat (not girthed) incl. frame1.30
Flush joineryMeasured flat incl. frame1.20
Fully glazed/gauzed joineryMeasured flat incl. frame0.80
Partly panelled & glazed joineryMeasured flat incl. frame1.00
Fully venetianed/louvred joineryMeasured flat incl. frame1.80
Weather boardingMeasured flat1.20
Wood shingle roofingMeasured flat1.10
Tile/slate batteningMeasured flat overall0.80
Trellis workMeasured flat overall2.00
Guard bars, gates, grillsMeasured flat overall1.00
Carved/enriched workMeasured flat2.00
Steel roller shuttersMeasured flat incl. jambs etc.1.10
Plain sheet steel doors/windowsMeasured flat incl. frame1.10
Fully glazed steel doors/windowsMeasured flat incl. frame0.50
Partly panelled glazed steel doorsMeasured flat incl. frame0.80
Collapsible gateMeasured flat (opening size)1.50

Notes:

  • No deduction for open spaces in trellis, grills, etc.
  • Supporting members not measured separately
10Multiplying Factors for Uneven Surfaces

IS 1200 (Part 15) - 1987: Multiplying Factors for Uneven Surfaces

To convert uneven surface areas into equivalent plain areas for measurement and painting, use the following key multiplying factors from Table 1 (Clause 3.5):

Description of WorkMeasurement MethodMultiplying Factor (per side)
Panelled/framed & braced joineryMeasured flat (not girthed) including frame1.30
Flush joineryMeasured flat (not girthed) including frame1.20
Fully glazed/gauzed joineryMeasured flat (not girthed) including frame0.80
Partly panelled & partly glazed/gauzed joineryMeasured flat (not girthed) including frame1.00
Fully venetianed or louvred joineryMeasured flat (not girthed) including frame1.80
Weather boardingMeasured flat (not girthed)1.20
Wood shingle roofingMeasured flat (not girthed)1.10
Tile and slate batteningMeasured flat overall; no deduction for spaces0.80 (for painting all over)
Trellis or Jaffri work (one-way or two-way)Measured flat overall; no deduction for spaces2.00 (for painting all over)
Guard bars, balustrades, gates, gratings, grills, railingsMeasured flat overall; no deduction for spaces1.00 (for painting all over)

Additional Multiplying Factors (Clause 3.6) for Corrugated/Nainital Pattern Roofs:

Surface TypeIncrease in Area (%)
Corrugated sheets14%
Nainital pattern roof (plain sheets with rolls)10%
Nainital pattern roof with corrugated sheets25%
Asbestos cement sheets,
11Measurement of Painting on Special Structures

IS 1200 Part 15: Measurement of Painting on Special Structures

Key Specifications:

  • Clause 3.5: Painting on different work types must be measured separately, specifying if measurement is flat or girthed. Uneven surfaces are converted to equivalent plain areas using Table 1 multiplying factors.

  • Clause 3.10: Painting repair works up to 1 m² are categorized as:

    • a) ≤ 0.1 m²
    • b) > 0.1 m² and ≤ 0.5 m²
    • c) > 0.5 m² and ≤ 1 m²
      Areas >1 m² measured as per Clause 2.6.

Table 1: Equivalent Plain Areas of Uneven Surfaces

Description of WorkMeasurement BasisMultiplying Factor (each side)
Panelled/framed/ledged joinery including chowkat/frameMeasured flat (not girthed)1.30
Flush joinery including chowkat/frameMeasured flat (not girthed)1.20
Flush shutterMeasured flat overall1.20
Fully glazed/gauzed joinery including chowkat/frameMeasured flat (not girthed)0.80
Partly panelled & partly glazed/gauzed joinery including frameMeasured flat (not girthed)1.00
Fully venetianed/louvred joinery including chowkat/frameMeasured flat (not girthed)1.80
Weather boardingMeasured flat (not girthed)1.20
Wood shingle roofingMeasured flat (not girthed)1.10
Boarding with cover fillets and match boardingMeasured flat (not girthed)1.05
Tile and slate batteningMeasured flat overall, no deduction0.80
Trellis (one-way or two-way)Measured flat overall, no deduction2.00
Guard
12Measurement of Painting on Doors, Windows, and Gates

IS 1200 (Part 15) - Measurement of Painting on Doors, Windows, and Gates

Key Points & Formulas:

  1. Painting Area Categories (Clause 3.10):

    • Up to 1 m² painting in repair work is categorized as:
      • a) ≤ 0.1 m²
      • b) > 0.1 m² and ≤ 0.5 m²
      • c) > 0.5 m² and ≤ 1 m²
    • Areas > 1 m² measured as per Clause 2.6.
  2. Equivalent Plain Areas for Uneven Surfaces (Table 1):

DescriptionMeasurement BasisMultiplying Factor (per side or all over)
Panelled/framed joinery incl. frameMeasured flat (not girthed)1.30 (each side)
Flush joinery incl. frameMeasured flat1.20 (each side)
Fully glazed/gauzed joineryMeasured flat0.80 (each side)
Partly panelled & glazed joineryMeasured flat1.00 (each side)
Venetianed/louvred joineryMeasured flat1.80 (each side)
Weather boardingMeasured flat1.20 (each side)
Tile/slate batteningMeasured flat overall0.80 (all over)
Trellis/Jaffri workMeasured flat overall2.00 (all over)
Gates, grills, balustradesMeasured flat overall1.00 (all over)
Carved/enriched workMeasured flat2.00 (each side)
Steel roller shuttersMeasured flat overall1.10 (each side)
Plain sheet steel doors/windowsMeasured flat1.10 (each side)
Fully glazed steel doors/windowsMeasured flat0.50 (each side)
Partly panelled steel doorsMeasured flat0.80 (each side)
Collapsible gateMeasured flat1.50 (all over)
  1. Measurement Notes:
    • Measure flat
13Measurement of Painting on Corrugated and Patterned Sheets

IS 1200 Part 15: Measurement of Painting on Corrugated and Patterned Sheets

Key Points & Formulas:

  1. Measurement Basis (Clause 3.5):

    • Specify whether measurements are flat or girthed.
    • Uneven surfaces are converted to equivalent plain areas using multiplying factors (see Table 1).
  2. Area Increase for Corrugated/Patterned Sheets (Clause 3.6):

Surface TypeArea Increase (%)
Corrugated sheets14%
Nainital pattern roof (plain sheets)10%
Nainital pattern roof with corrugated sheets25%
Asbestos cement sheets, corrugated20%
Asbestos cement sheets, semi-corrugated10%

Formula:

[ \text{Equivalent Plain Area} = \text{Measured Flat Area} \times (1 + \frac{\text{Area Increase %}}{100}) ]

  1. Equivalent Plain Areas for Uneven Surfaces (Table 1 highlights):
DescriptionMultiplying Factor (each side / all over)
Panelled/framed joinery1.30
Flush joinery1.20
Fully glazed/gauzed joinery0.80
Venetianed/louvred joinery1.80
Weather boarding1.20
Wood shingle roofing1.10
Tile and slate battening (all over)0.80
Trellis work (all over)2.00
Steel roller shutters1.10
Plain sheet steel doors/windows1.10
Fully glazed steel doors/windows0.50
  1. Small Repair Painting (Clause 3.10):

Painting for repair works up to 1 m² is categorized as:

  • Not exceeding 0.1 m²
  • Exceeding 0.1 m² but not exceeding 0.5 m²
  • Exceeding 0.5 m² but not exceeding 1 m²
14Preparatory Work and Finishes

IS 1200 Part 15: Preparatory Work & Finishes - Key Points

Preparatory Work (Clause 2.6)

  • Includes knotting, priming, stopping, rubbing down, burning off, stripping.
  • Number of coats must be specified.
  • Surfaces previously painted are measured separately.

Measurement of Painting in Repair Work (Clause 3.10)

  • Repair painting up to 1 m² is categorized as:
    • a) ≤ 0.1 m²
    • b) > 0.1 m² and ≤ 0.5 m²
    • c) > 0.5 m² and ≤ 1 m²
  • Areas >1 m² measured as per Clause 2.6.

Equivalent Plain Areas of Uneven Surfaces (Table 1)

Work DescriptionMeasurement BasisMultiplying Factor (each side or all over)
Panelled/framed joineryMeasured flat incl. frame1.30
Flush joineryMeasured flat incl. frame1.20
Fully glazed/gauzed joineryMeasured flat incl. frame0.80
Venetianed/louvred joineryMeasured flat incl. frame1.80
Weather boardingMeasured flat1.20
Tile/slate batteningMeasured flat overall0.80
Trellis (Jaffri) workMeasured flat overall2.0
Carved/enriched workMeasured flat2.0
Steel roller shuttersMeasured flat (opening size)1.10
Plain sheet steel doors/windowsMeasured flat incl. frame1.10
Fully glazed steel doors/windowsMeasured flat incl. frame0.50
Collapsible gateMeasured flat (opening size)1.50

Notes:

  • No deduction for open spaces in trellis, grills, etc.
  • Measurement includes iron fittings if painted in same shade.
  • Composite doors/windows measured by parts with appropriate factors.

Summary Formula for Painting Area:

[ \text{Effective Painting Area} = \text{Measured Flat Area} \times \text{Multiplying Factor} ]

This accounts for surface unevenness

15Notes and Clarifications

IS 1200 Part 15 (1987) — Key Notes & Specifications for Measurement of Painting, Polishing, Varnishing


1. Equivalent Plain Areas of Uneven Surfaces (Clause 3.6 & Table 1)

Surface TypeMultiplying Factor (Increase Area by %)
Corrugated sheets (M.S. & G.I.)14%
Nainital pattern roof (plain sheets with rolls)10%
Nainital pattern roof with corrugated sheets25%
Asbestos cement sheets, corrugated20%
Asbestos cement sheets, semi-corrugated10%

Use these factors to convert uneven surface areas to equivalent plain surface areas for measurement.


2. Multiplying Factors for Various Works (Table 1, Clause 1.10)

DescriptionMeasurement BasisMultiplying Factor
Tile and slate batteningMeasured flat overall; no deduction0.80 (for painting all over)
Trellis (one-way or two-way)Measured flat overall; no deduction2 (for painting all over)
Gates, balustrades, grills, expanded metalMeasured flat overall; no deduction1 (for painting all over)
Panelled or framed joineryMeasured flat (not girthed)1.30 (each side)
Flush joineryMeasured flat (not girthed)1.20 (each side)
Fully glazed steel doors/windowsMeasured flat (not girthed)0.50 (each side)
Partly panelled & glazed steel doorsMeasured flat (not girthed)0.80 (each side)
Steel roller shuttersMeasured flat (size of opening)1.10 (each side)
Collapsible gateMeasured flat (size of opening)1.50 (for painting all over)

3. Measurement Notes

Popular Questions About IS 1200 Part 15

?How are uneven surfaces like trellis work and louvred joinery measured under IS 1200 Part 15?

Under IS 1200 Part 15 (1987), uneven surfaces like trellis work and louvred joinery are measured as follows:

Measurement Method:

  • Measured flat overall (not girthed), including frames (chowkat), edges, cleats, etc.
  • No deduction for open spaces.
  • Supporting members are not measured separately.

Multiplying Factors for Painting (both sides):

DescriptionMultiplying Factor
Trellis (one-way or two-way)2.0
Fully venetianed or louvred joinery1.8

Summary:

  • Measure the flat overall area of the trellis or louvred joinery including frames.
  • Multiply by the factor (2 for trellis, 1.8 for louvred) to get the equivalent plain area for painting.

Loading diagram...

This ensures the complex surface texture is accounted for in painting quantity estimation.

?What multiplying factors are applied for painting on corrugated sheets and patterned roofs?

According to IS 1200 Part 15 (1987), Clause 3.6, the multiplying factors for painting on corrugated sheets and patterned roofs are as follows:

Surface TypeMultiplying Factor (Increase in Area)
Corrugated sheets14% (multiply flat area by 1.14)
Nainital pattern roof (plain sheets with rolls)10% (multiply flat area by 1.10)
Nainital pattern roof with corrugated sheets25% (multiply flat area by 1.25)
Asbestos cement sheets, corrugated20% (multiply flat area by 1.20)
Asbestos cement sheets, semi-corrugated10% (multiply flat area by 1.10)

How to apply:

  • Measure the flat surface area of the sheets.
  • Multiply by the corresponding factor to get the equivalent plain area for painting.

This adjustment accounts for the increased surface due to corrugation or pattern.


Example:

If flat area of corrugated sheet = 100 m²
Equivalent area for painting = 100 × 1.14 = 114 m²


This ensures accurate estimation of paint quantity and cost.

?Does the standard include preparatory work such as priming and knotting in measurement?

According to IS 1200 Part 15:

  • Preparatory work like knotting, priming, stopping, rubbing down, burning off, or stripping must be clearly described in the measurement item (Clause 2.6).
  • The number of coats applied should be stated.
  • Work on previously painted surfaces is measured separately.
  • Preparatory work is included in the measurement items and described (Clause 2.7).
  • Different surfaces (non-absorbent like steel, semi-absorbent like wood) are measured separately, with preparatory work included.

Summary:

Yes, preparatory work such as priming and knotting is included and measured as part of the painting work, but must be itemized and described separately in the measurement.

Loading diagram...
?How is painting on fabricated steel and iron work quantified according to this standard?

According to IS 1200 Part 15, painting on fabricated steel and iron work is quantified as follows:

  • Priming coat is included with the fabrication cost.

  • Subsequent coats are measured separately based on either:

    • Weight of steel/iron work, or
    • Surface area in square meters.
  • The weight or area of steel components (sheets, plates, rods, tubes, etc.) is taken from relevant Indian Standards.

  • Rivet heads, bolt heads, nuts (with/without washers), including projecting shanks, if painted in a different tint, are measured as extra items.

  • No additional weight is added for paint thickness on steel/iron weight.

  • Surfaces must be described clearly, specifying if measurements are on flat or girthed surfaces.

  • Uneven surfaces are converted into equivalent plain areas using Table 1 (conversion factors for irregular surfaces).

  • Painting on different surface types (non-absorbent like steel vs semi-absorbent like wood) is measured separately.


Summary Table for Measurement Basis:

Paint Coat TypeMeasurement Basis
Priming coatIncluded with fabrication
Subsequent coatsWeight or surface area (m²)
Special items (nuts, bolts)Enumerated separately as extras

This ensures precise and fair quantification of painting work on fabricated steel and iron structures.

?Are small painted articles and repair painting measured differently from large surface areas?

According to IS 1200 Part 15:

  • Small painted articles (up to 0.1 m²) are enumerated separately (Clause 3.4), not measured by area.
  • Repair painting up to 1 m² is also enumerated in categories (Clause 3.10):
    • ≤ 0.1 m²
    • 0.1 m² to ≤ 0.5 m²

    • 0.5 m² to ≤ 1 m²

  • For large surface areas, painting is measured in square meters (Clause 3.1).
  • Surfaces with uneven textures are converted to equivalent plain areas using multiplying factors from Table 1 (Clause 3.5).

Summary:

Type of PaintingMeasurement Method
Small articles ≤ 0.1 m²Enumerated (counted)
Repair painting ≤ 1 m²Enumerated in size categories
Large areasMeasured in m², flat or girthed
Uneven surfacesArea × multiplying factor (Table 1)

This ensures fair and consistent measurement for different painting scopes.

Need Detailed Clause Answers?

Ask AI about any clause, requirement, or provision in IS 1200 Part 15. Get instant, clause-cited responses powered by our indexed library.

Free tier includes 150 queries (50 AI + 100 Reference) · No credit card required