Method of measurement of building and civil engineering works, Part 2: concrete works
1974 Edition

IS 1200 Part 2 specifies the following units for measuring concrete works in buildings and civil engineering: concrete volume is quantified in cubic meters (m³). Structural elements like slabs, beams, columns, foundations, and walls are measured based on their net volume after accounting for openings or voids. Formwork areas are measured separately in square meters (m²). Reinforcement quantities are typically measured separately according to relevant standards. The volume of concrete is calculated using Length × Breadth × Depth, with openings larger than 0.1 m² deducted from the volume. The standard excludes concrete measurement for roads, piling, wells, and tunneling as these are covered in other parts of IS 1200.

As per IS 1200 Part 2 (1974), precast concrete components are measured using specific units based on their type: wall panels and floor or roof slabs are measured in square meters (m²); beams, columns, and trusses are measured either by running meters or by count; channel units and purlins use running meters or numbers; string courses, copings, bed plates, anchor blocks, window sills, shelves, louvers, steps, and staircases are measured similarly by running meters or numbers. Solid and hollow blockwork are measured in cubic meters (m³) or square meters (m²). Lightweight partitions are measured in square meters with thickness specified. Door and window frames are measured in running meters with size details. Waffle units are quantified by area or count. Water tanks are counted individually. Jallies (filled openings) are measured in square meters with thickness stated, and fencing posts are measured either by number or cubic meters. Additionally, finishing work on precast elements is measured separately, and hoisting, transport, assembly, and setting are included in measurements unless otherwise noted.

Yes, IS 1200 Part 2 provides specific instructions for measuring concrete in combined elements like chajjas with beams or slabs. When a chajja is integrated with a beam or lintel, the shared section is measured as chajja, considering the clear projection inclusive of bearing. If the chajja extends as a roof or suspended slab, measurement is taken up to the central line of the bearing. For chajjas combined with vertical fins or facias, the measurement of the chajja is taken clear between these vertical elements, while the fins or facias themselves are measured in full. A chajja with thickness up to 100 mm is classified and measured as a chajja; if its thickness exceeds 100 mm, it is measured as a slab. This approach avoids double measurement and clearly defines boundaries for such composite concrete elements.

IS 1200 Part 2 outlines the measurement of cutting, toothing, and bonding in concrete works as follows: grooves and chases are measured in running meters multiplied by the girth of the cut; holes, mortices, and openings are measured per centimeter depth based on their area categories—up to 250 cm² and between 250 cm² to 0.1 m²—using the net required area rather than the actual cut area. Cutting of reinforced concrete surfaces exposing reinforcement is measured in square meters with the depth specified. Toothing and bonding, which involve labour and materials for connecting new concrete walls to existing structures, are also measured in square meters. These precise measurement protocols ensure accurate costing and control during execution.

According to IS 1200 Part 2, reinforcement is generally quantified separately from concrete. Clause 4.1.5 specifies that reinforcement measurement is to be done independently, with additional details provided in IS 1200 Part 8. However, if concrete and reinforcement are combined as a single item, this must be explicitly stated in the description, and different reinforcement configurations require separate measurement. For precast concrete, reinforcement might be included or measured separately depending on the item description. Structural concrete in members such as columns, beams, and slabs is always measured separately from reinforcement. This distinction maintains clarity and prevents double counting in quantities and billing.