The 1982 edition of IS 1200 Part 22 outlines uniform procedures for quantifying materials in construction and civil engineering projects throughout India. It details the measurement techniques for a variety of building materials such as aggregates, bricks, metals, and asbestos cement products, promoting consistency and precision in project cost estimation, execution, and billing. This code is a vital reference for engineers, contractors, and quantity surveyors working on civil infrastructure developments.
Overview
The 1982 edition of IS 1200 Part 22 outlines uniform procedures for quantifying materials in construction and civil engineering projects throughout India. It details the measurement techniques for a variety of building materials such as aggregates, bricks, metals, and asbestos cement products, promoting consistency and precision in project cost estimation, execution, and billing. This code is a vital reference for engineers, contractors, and quantity surveyors working on civil infrastructure developments.
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Contents
Structure
This section introduces the measurement techniques for materials utilized in civil engineering tasks. Key specifications include units and measurement details for bamboos, scantlings, tiles, waterproofing compounds, wire, and wire rope. For example, bamboos are enumerated with diameter measured at 1.5 meters from the thick end, while aggregates larger than 40 mm require volume measurement with a 7.5% deduction to account for voids. The section also contains a diagram illustrating the standardized units applied to various materials.
Measurement plays an essential role throughout the lifecycle of a civil engineering project, from initial cost estimation to final payment processing. This section emphasizes the need for unified measurement approaches to avoid discrepancies arising from varied practices among agencies. It outlines the scope of the standard, covering building and civil works, and details typical units and measurement techniques such as earthwork in cubic meters and steel reinforcement by weight. A formula for calculating earthwork volume and a flowchart summarizing the measurement-to-payment sequence are provided.
This part explains that each item description must comprehensively include aspects such as transportation, handling, unloading, and storage unless otherwise specified. It provides a tabulated summary of measurement units and remarks for different material types like aggregates, aluminium, asbestos cement, bitumen, bricks, cement mixtures, doors, steel, tiles, paints, and pipes. Specific deductions for voids in stacked materials and requirements for specifying size, type, and grade are highlighted. The section also includes a process flow diagram to illustrate the measurement steps.
This section defines the precision limits for measurement reporting: lengths are rounded to 0.01 meters, areas to 0.01 square meters, volumes to 0.01 cubic meters, and weights to the nearest kilogram. It references IS 2-1960 for rounding rules, ensuring consistent numerical reporting. The section explains the rationale for standardization in reducing ambiguity and facilitating smooth contract administration. A summary table of rounding precisions and a flowchart depicting the rounding decision-making process are included.
Key requirements for bills of quantities are discussed, emphasizing the need to fully describe materials with their type, size, grade, and quantity. A summarized table outlines measurement units and notes for various building materials, including aggregates, aluminium, bricks, bitumen, cement, steel, paints, and soling stones, indicating necessary deductions for voids in stack measurements. The section underscores the importance of clear enumeration and detailed descriptions to achieve accurate billing and procurement. A flowchart visualizes the relationship between material description and measurement units.
This section presents a summary of measurement methodologies for different materials as specified in Table 1 of the standard. It covers volume measurement for aggregates with applicable voids deductions, weight measurement for metals and cement, enumeration for asbestos cement products, and area measurement for tiles and felt. Important notes explain how deductions are applied for stacked aggregates and soling stones. An example formula for calculating net volume after deduction is provided.
Detailed measurement approaches are outlined for various materials such as aggregates, bricks, aluminium products, bitumen compounds, steel, glass, paints, timber, and stones. The section specifies units like cubic meters for volume, kilograms for weight, running meters for linear items, and enumeration for countable products. It reiterates the deduction percentages for brick/stone aggregates and soling stones to account for voids and includes formula examples. A diagram summarizing material types linked to their measurement units is also included.
This table compiles measurement units and remarks for various construction materials, including aggregates, bricks, aluminium, asbestos cement, bitumen, steel, glass, tiles, timber, and paints. It highlights the requirement for deductions in volume measurements of certain materials and specifies when enumeration or weight measurement applies. An example calculation for brick and stone aggregates is included. The table serves as a quick reference for accurate measurement practices.
Frequently Asked
According to IS 1200 Part 22 (1982), aggregates are measured based on their nominal size. For brick or stone aggregates with a nominal size of 40 mm or above, the volume is calculated in cubic meters after applying a 7.5% deduction from the gross stack volume to account for voids. Aggregates smaller than 40 mm, such as sand, cinder, and fly ash, are measured by the gross stack volume in cubic meters without any deduction. This standardization ensures consistent and accurate quantity estimation for aggregates in civil engineering projects.
IS 1200 Part 22 prescribes that bricks and stones with a nominal size of 40 mm or more should be measured by volume in cubic meters after deducting 7.5% from the gross stack volume to account for void spaces. For brick or stone aggregates less than 40 mm, the measurement is taken as the gross stack volume without any deduction. These methods help maintain uniformity and precision in the estimation and billing of bricks and stones in construction works.
The standard specifies that aluminium flats should be measured by weight in kilograms, with the size (such as thickness and width) clearly stated. Aluminium strips and edging are quantified by their length in running meters, again specifying the size dimensions. This approach provides clarity in the measurement and billing processes by addressing the physical characteristics of metal materials.
IS 1200 Part 22 does not explicitly include handling, delivery, or transportation losses within its measurement procedures. The standard focuses on the measurement of materials themselves, such as volume, weight, or enumeration. Handling and delivery aspects are typically managed separately as allowances for wastage or shrinkage and are addressed contractually or through project specifications rather than within this measurement code.
Measurement results under IS 1200 Part 22 must be rounded following the stipulations of IS 2:1960. Lengths and dimensions should be rounded to the nearest 0.01 meter, areas to 0.01 square meters, volumes to 0.01 cubic meters, and weights to the nearest kilogram. The rounding follows standard rules where digits less than 5 are rounded down and digits 5 or greater are rounded up, with specific treatment when the digit is exactly 5 to avoid bias. This ensures consistency and accuracy in recording and reporting measurement data.
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