The IS 7272 Part 1 (1974) standard specifies recommended labour productivity rates tailored for general construction activities within India's North Zone, encompassing Punjab, Haryana, Delhi, Uttar Pradesh, and Rajasthan. It delivers uniform labour day estimates across a range of building operations like excavation, concrete mixing, bricklaying, plastering, joinery, and finishing works, supporting precise scheduling, budgeting, and workforce evaluation for professionals engaged in this geographic region.
Overview
The IS 7272 Part 1 (1974) standard specifies recommended labour productivity rates tailored for general construction activities within India's North Zone, encompassing Punjab, Haryana, Delhi, Uttar Pradesh, and Rajasthan. It delivers uniform labour day estimates across a range of building operations like excavation, concrete mixing, bricklaying, plastering, joinery, and finishing works, supporting precise scheduling, budgeting, and workforce evaluation for professionals engaged in this geographic region.
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Frequently Asked
Specific labour output constants differentiate excavation activities based on soil condition. For hard or dense soil with excavation depths up to 1.5 meters, the recommended labour constants are approximately 0.06 days for unskilled Mate labour and 0.62 days for Mazdoor per cubic meter. In contrast, excavation in soft or loose soil trenches up to 1.5 meters wide recommends 0.05 days for Mate and 0.50 days for Mazdoor per cubic meter. These values include removal within one meter from the excavation edge.
The standard provides incremental labour constants to account for added excavation depth between 1.5 and 3 meters and for increased horizontal transport distances (lead). For example, additional depth in hard soil requires about 0.01 days for Mate and 0.11 days for Mazdoor per cubic meter beyond the base excavation. Similarly, for transporting excavated material beyond one meter up to 250 meters, extra labour of 0.12 days per 25 meters is recommended for Mate labour. These adjustments ensure accurate labour estimation reflecting site conditions.
IS 7272 Part 1 (1974) specifies labour times for reinforced concrete works per cubic meter as follows: hand mixing at banker requires about 1.0 days for Mazdoor and 0.1 days for Bhisti; machine mixing involves 0.50 days for Mazdoor, 0.10 days for Bhisti, plus 0.07 days each for the mixer operator and mixer maintenance. For in-situ reinforced concrete in foundations and footings (excluding formwork and reinforcement fixing), the labour is approximately 0.17 days for Mason, 2.00 days for Mazdoor, 0.90 days for Bhisti, and 0.07 days each for mixer operator, mixer, and vibrator. These constants cover mixing, pouring, consolidation, and curing activities.
Yes, IS 7272 Part 1 offers distinct labour output constants for various trades involved in building construction. Labour rates are tabulated separately for masons, carpenters, painters, mazdoors (helpers), bhistis (water carriers), and glaziers. This detailed breakdown allows for precise labour planning and estimation tailored to the specific tasks and skilled or unskilled workforce involved.
Construction managers can optimize project planning by applying these labour output constants to estimate the workforce size and duration required for each building activity accurately. By calculating man-days as the product of work quantity and labour constants, planners achieve better resource allocation, avoid labour shortages or idle times, and improve cost and timeline forecasting. Since these constants reflect productivity specific to the North Zone's climatic and material conditions, they enable realistic and efficient scheduling tailored to regional contexts.
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