IS 1200 PART 181974AI Search Enabled✦ AI Generated
Method of measurement of building and civil engineering works, Part 18: demolition and dismantling 1974 Edition
This document outlines the standardized procedures for quantifying demolition and dismantling activities in building and civil engineering projects across India. It details measurement techniques for various components such as concrete, steel, timber, fencing, and pipelines to ensure precise estimation and documentation of demolition work.
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1974Edition
Methods of Measurement of Works of Civil EngineeringCategory
This document outlines the standardized procedures for quantifying demolition and dismantling activities in building and civil engineering projects across India. It details measurement techniques for various components such as concrete, steel, timber, fencing, and pipelines to ensure precise estimation and documentation of demolition work.
Audience
Who Uses This Standard
Structural and Civil Engineers
Quantity Surveying Professionals
Construction and Demolition Contractors
Project Supervisors and Managers
Cost Analysts
Demolition Experts
Contents
Key Topics Covered
✓Measurement fundamentals for demolition and dismantling operations
✓Quantifying concrete elements and pavements
✓Determining steel and iron work by weight
✓Assessment techniques for timber components
✓Measurement of fencing, wire mesh, and supporting frameworks
✓Evaluation of pipelines and related accessories
✓Safety and environmental precautions including dust suppression
✓Procedures for measuring work under special site conditions like water and snow
✓Dimension recording and rounding conventions
✓Segregation and measurement of reusable versus waste materials
✓Assessment of temporary supports and enclosures
✓Measuring debris transport distances and disposal
Structure
Table of Contents
1Scope and Applicability
2Fundamental Measurement Principles
3Measurement of Walls, Piers, Columns, and Foundations
4Assessment Procedures for Reinforced Concrete Structures
5Measurement Guidelines for Lead Sheets
7Measurement Techniques for Concrete and Brick Roofs and Floors
8Evaluation of Floors and Pavements
9Measurement of Partitions, Trellis, and Similar Elements
10Measurement Protocols for Woodwork
11Measurement of Doors, Windows, and Openings
13Measurement of Structural Posts and Struts
14Measurement of Fencing Wire Mesh and Associated Components
15Measurement of Removal of Serviceable Glass
16Measurement of Pipelines and Related Accessories
18Measurement Practices for Road Construction Work
Frequently Asked
Popular Questions About IS 1200 PART 18
?What is the method for measuring reinforced concrete structures during demolition as per the standard?▼
According to the standard, reinforced concrete elements are quantified based on the actual volume of concrete removed during demolition. Measurements are taken after separating reinforcement bars if these are accounted for individually. The volume calculation relies on the concrete’s dimensions prior to demolition or from the debris. When dismantling (careful removal without damage), measurements reflect the intact quantity removed. Reinforcement bars are measured separately by weight or length to avoid duplication.
?How should steel and iron works be measured in demolition projects following the guidelines?▼
Steel and iron components must be measured by weight in kilograms. Their weight is typically determined using standard weight tables for steel sections, unless actual weights are known. Measurements for demolition and dismantling operations are recorded separately, and steel intended for reinstallation is measured distinctly. Careful removal of steel during dismantling is emphasized to prevent damage.
?How does the code handle measurement of works performed under special conditions such as underwater or tidal environments?▼
The code mandates separate measurement for works under special conditions like underwater, muddy, foul environments, tidal zones, or snowy areas. For tidal works, it requires recording high and low water marks to define conditions clearly. Specific provisions cover pumping in spring-affected areas. Measurements should be staged with height or depth referenced to a defined datum to ensure clarity and accuracy.
?What precautions are recommended to control dust and nuisance during demolition activities?▼
The standard specifies that dust and nuisance control measures must be explicitly stated in contracts or work orders where required. Precautions include protecting the public and adjacent properties, typically through water spraying, misting, erecting temporary enclosures or dust screens, and controlled dismantling methods to minimize airborne dust. Use of personal protective equipment and scheduling work to reduce impact are also advised.
?How should serviceable materials be distinguished and measured separately from unserviceable debris during demolition?▼
Serviceable materials must be separated from waste debris and stacked within 100 meters of the site. Removal of materials beyond this distance is measured separately. The shortest practicable route is used to measure transport distances. Reinforcement steel that is cleaned and salvaged is measured by weight. Demolition and dismantling operations are recorded distinctly to reflect differences in handling and valuation.
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