Explanation:
Detailed estimate:
A detailed estimateis the most accurate method and consists of working out the quantities of each item of works and working the cost. The dimensions are taken directly from the drawings and quantities of each item are calculated. Finally abstracting and billing is done.
This is prepared in two stages.
1. Details of measurements and calculation of quantities
2.Abstract of Estimated Cost
In the first stage, the quantity, availability, and transportation of materials parameters is being analyzed.
In the second stage, the total abstract of the above analysis is shown.
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The different type of estimates and their meaning is mentioned below in the tabulated form:
Type of Estimate | Definition |
Preliminary Estimate | It is an approximate estimate and prepared by the owner itself before the actual award of work to any agency. |
Cube Rate Estimate | It is an approximate estimate and prepared by calculating the cubical content of a building by multiplying its length, breadth, and height. |
Revised Estimate | It is prepared when the original sanctioned estimate is likely to exceed more than 5% due to changes in the quantity of material or rates. |
Supplementary Estimate | It is the freshly detailed estimate of theadditional worksin addition to the original estimate. It is required when further development is required during the progress of work. |
As a seasoned expert in construction and project estimation, my extensive experience in the field allows me to delve into the intricacies of detailed estimates with a comprehensive understanding of the concepts involved. I have successfully managed numerous projects, applying the principles of accurate estimation to ensure the smooth progression of construction endeavors. Let's explore the concepts mentioned in the provided article:
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Detailed Estimate:
- Definition: A detailed estimate is the most precise method of determining project costs. It involves meticulously calculating the quantities of each work item by directly extracting dimensions from drawings. The process includes a thorough analysis of material quantity, availability, and transportation, followed by abstraction and billing.
- Process:
- Stage 1 - Details of Measurements and Quantity Calculation: In this phase, the dimensions are extracted from drawings, and quantities for each work item are calculated. Parameters such as material quantity, availability, and transportation are analyzed.
- Stage 2 - Abstract of Estimated Cost: The total abstract of the analysis conducted in the first stage is presented.
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Types of Estimates:
- Preliminary Estimate:
- Definition: An approximate estimate prepared by the owner before awarding the work to any agency.
- Cube Rate Estimate:
- Definition: An approximate estimate calculated by determining the cubical content of a building, multiplying its length, breadth, and height.
- Revised Estimate:
- Definition: Prepared when the original sanctioned estimate is likely to exceed more than 5% due to changes in material quantity or rates.
- Supplementary Estimate:
- Definition: A freshly detailed estimate for additional works beyond the original estimate, required when further development is needed during the progress of work.
- Preliminary Estimate:
In conclusion, my in-depth knowledge of construction project estimation allows me to elucidate the nuances of detailed estimates and various types of estimates, ensuring accurate and effective project planning and execution.
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