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Scientific estimation is also known as?
Detailed
Approximate
Lumsum
None of above
Detailed
Scientific estimation, often synonymous with detailed estimation, is a systematic and precise method of calculating the quantities and costs of materials, labor, and equipment for an engineering project. It relies on rigorous technical specifications, drawings, and accurate unit rates to minimize financial risk and technical uncertainty.
Scientific estimation, often synonymous with detailed estimation, is a systematic and precise method of calculating the quantities and costs of materials, labor, and equipment for an engineering project. It relies on rigorous technical specifications, drawings, and accurate unit rates to minimize financial risk and technical uncertainty.
TotalCost=тИС(QuantityiтАЛ├ЧRateiтАЛ)+Contingency% тАФ Total estimation formula based on component breakdown.
The process involves breaking down the entire project into smaller, manageable work packages or components (Work Breakdown Structure). Engineers apply specific technical data (e.g., wiring length, load calculations, standard codes like IS standards) to determine the exact quantity of items required, followed by multiplying these by verified market rates to compute the total project cost.
Detailed estimation is based on comprehensive drawings and material specifications.
It requires knowledge of current market rates and labor productivity norms.
It is the most accurate method compared to lump-sum or approximate methods.
Used extensively in government tenders and major electrical infrastructure projects.
High accuracy leading to better financial control.
Facilitates proper procurement planning and inventory management.
Reduces the likelihood of mid-project budget overruns.
Time-consuming process requiring significant technical expertise.
Requires detailed design blueprints before the estimate can be finalized.
Large-scale electrical wiring of industrial plants.
Public works power distribution projects.
Commercial building construction.
| Feature | Detailed (Scientific) | Approximate (Lump-sum) |
|---|---|---|
Accuracy Level | High | Low |
Requirement | Full Blueprints | Preliminary Data |
Lump-sum estimation is generally used for small works where the contractor takes the financial risk based on a total quoted price.
Approximate estimation is often used for budgetary sanity checks during the initial feasibility study phase.
Option B (Approximate) is the opposite of a scientific or detailed estimate in terms of precision.
A is correct тАФ Scientific estimation refers to a detailed estimate characterized by high precision and based on thorough technical analysis of all project components.
Always remember that 'Scientific' or 'Detailed' estimation requires item-wise quantity calculation, whereas 'Lump-sum' relies on overall experience and historical data.