Method of measurement of building and civil engineering works, Part 14: glazing
1984 Edition

IS 1200 Part 14 introduces the standardized approach for measuring glazing in construction and civil engineering projects. It specifies scope, material descriptions—including plain, wired (with wire pattern details), and frosted glass (noting frosting sides)—and mandates rounding off measurements according to IS 2:1960 to maintain precision to two decimal places (nearest 0.01 m²). This section also includes a summary table of measurement units and rounding standards, supported by a flowchart illustrating the steps for identifying glazing types and applying measurement rules.

This section defines the measurement scope for glazing in buildings and civil engineering works, emphasizing area calculation to the nearest 0.01 m² and rounding rules per IS 2:1960. It highlights the necessity for detailed Bills of Quantities that describe measurement methods, rounding procedures, and material/workmanship specifics, ensuring uniformity and accuracy in quantity take-off and billing.

General principles covering measurement of glazing include adherence to net measurements in decimal units, distinct treatment of different glazing materials (plain, wired with specified reinforcement pattern, frosted with frosting side details), and rounding conventions per IS 2-1960. A summary table and accompanying flowchart provide clarity on these foundational measurement rules.

This section outlines the criteria for clubbing measurement items, permitting grouping only when detailed descriptions match exactly. It clarifies that conveyance, handling, storage, and waste are considered inclusive in item descriptions, and emphasizes the importance of separate measurement for different materials such as wood, metal, and concrete. A summary table and decision flowchart facilitate understanding of item grouping protocols.

Describes the procedure for recording dimensions, specifying the order of Length, Breadth/Width, and Height/Depth/Thickness. It mandates measuring pane dimensions by adding clear opening size to the rebate widths, handling non-rectangular panes via enclosing rectangle methods, and recording measurements to the nearest 0.01 m using the decimal system. A flowchart illustrates the dimension booking workflow.

Details the requirements for item descriptions encompassing conveyance, handling, storage, and waste unless otherwise noted. Differentiates glazing sheets by type (plain, wired, frosted) with specific notes on reinforcement patterns and frosting sides. Also covers enumeration of glass and louvres and conditions for item grouping, supported by a descriptive flow diagram.

Specifies all measurements are in the decimal system with lengths recorded to the nearest 0.01 m and areas to the nearest 0.01 m². Emphasizes net measurements taken post-installation and recommends use of calibrated tools. Includes a process flowchart summarizing measurement procedures.

Explains the comprehensive detailing required in Bills of Quantities, including accurate material and workmanship descriptions, net decimal measurements, separate quantification for different materials, and adherence to rounding rules. Provides formulas for calculating quantities and a flow diagram illustrating the preparation process for planning and tendering.

Focuses on separately measuring various glazing materials—plain, wired (with reinforcement details), frosted (noting single or double-sided frosting). Measurement is based on the visible area, calculated as length multiplied by breadth, rounded per IS 2:1960. A flowchart outlines the measurement steps.

Mandates distinct measurement for works involving wood, metal, concrete, etc., with area measurements recorded in square meters including specified thickness, rounded to 0.01 m². A tabular summary and flowchart highlight the measurement protocol to avoid mixing quantities.

Although IS 1200 Part 14 primarily addresses measurement methods, it implies classification based on glazing material types: clear glass, wired glass (with reinforcement patterns), frosted glass (specifying frosting side), and other sheets like acrylic or polycarbonate. Each type requires separate measurement and description, with rounding adherence. A classification table and diagram illustrate this categorization.

Outlines the step-by-step measurement procedures for glazing works, including measurement of glass areas, frames, beading, and putty. Emphasizes net measurements in decimal units, full descriptions in Bills of Quantities, and rounding rules. Includes formulas and a flowchart summarizing the measurement process from site installation to final quantification.

Specifies measurement of glass panes by combining the clear opening dimensions with the width of rebates. For non-rectangular panes, the smallest enclosing rectangle is measured. Different glass types (plain, wired with wire pattern, frosted with frosting sides) must be distinctly described. Straight cutting is included in the measurement. A formula and flowchart provide calculation and recording guidance.

Circular and curved cuts in glazing are measured as additional quantities in running meters, calculated by the arc length formula (radius multiplied by central angle in radians). Dimensions are recorded to the nearest 0.01 m, with a flowchart illustrating the measurement steps for curved edges.

Glass and sheet louvres must be separately enumerated and measured by their net visible glazed area. Descriptions include type of glass or sheet material, thickness, wire patterns, and frosting sides as applicable. Measurements are rounded according to IS 2:1960. A flow diagram clarifies the process.

Removal of old or broken glass is measured in square meters. The type of glass must be specified, including wired or frosted details. Different glazing fixing methods (putty with sprigs or pins, putty with beads, rubber or velvet with beads) are to be described and measured separately. A tabular summary and flowchart outline the approach.

Each drilled hole in glazing is enumerated with details including hole diameter, glass type and thickness, and pane size. Measurements are recorded with precision to 0.01 m for linear dimensions and 0.01 m² for areas. The area of circular holes is calculated using the formula π × (diameter/2)². This ensures accurate billing and quality control.

Grinding, polishing, and rounding of glass edges are measured in running meters along the treated edges. Each finishing type must be clearly described before measurement. Separate descriptions are required for different glass types, including wired and frosted glasses with relevant details. A flowchart depicts the measurement process.