SSC JE 2023 | Estimation Costing and Valuation | Introduction & Types | Civil Engineering
Engineers Wallah - AE, JE・108 minutes read
Understanding estimation, casting, and valuation in construction projects is crucial for controlling expenses, managing resources, and planning effectively. Detailed drawings and specifications are essential for accurate estimates and an overall understanding of the project requirements.
Insights
- Understanding the types of estimates and their significance is crucial for effective cost control, resource management, and efficient planning in construction projects.
- Detailed specifications, including information on materials, quantities, and working methods, are essential for accurate estimates, emphasizing the importance of distinguishing between general and detailed specifications.
- The process of estimating costs, calculating areas like plinth area, and determining floor space index are fundamental aspects of construction projects, requiring precision and attention to detail for accurate valuation and planning.
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Recent questions
What are the key components in construction projects?
Estimating probable costs and actual costs are crucial components in construction projects. Estimation aids in controlling expenses, managing resources, and planning effectively. Drawing, specifications, and detailed information are essential for accurate estimates.
How are detailed specifications different from general specifications?
General specifications provide a broad idea, while detailed specifications offer specific quantities and materials required. Detailed specifications also include information on the nature and class of materials needed. Understanding the working method and differentiating between general and detailed specifications is crucial for accurate estimates.
What is the importance of accuracy in estimation, casting, and valuation?
The importance of accuracy in estimation, casting, and valuation is highlighted as crucial for effective project planning and resource management. Deviating from the estimated cost by 10% indirectly is common practice, emphasizing the need for precise calculations and revisions when necessary.
What is the process of determining the floor space index for a building?
The process of determining the floor space index involves calculating the total floor area by dividing it by the total plot area. This ratio is crucial for understanding the permissible construction limits and ensuring compliance with building regulations. Different types of estimates, including approximate, detailed, and unit rate estimates, play a role in this calculation.
Why is it important to engage with detailed estimates and specifications in construction projects?
Engaging with detailed estimates and specifications is essential for accurate project planning and cost management. Different types of sanctions, including administrative, financial, and technical, are required for project approval. Understanding the order of sanction approval and the importance of detailed estimates ensures effective project execution and compliance with regulations.
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Summary
00:00
"Essential Tips for Accurate Construction Estimation"
- Estimation, casting, and valuation are crucial subjects with questions worth up to 10 marks.
- Completing the syllabus and making concise notes is emphasized for effective learning.
- The importance of understanding the types of estimates and their significance is highlighted.
- Estimating probable costs and actual costs are key components in construction projects.
- Estimation aids in controlling expenses, managing resources, and planning effectively.
- Drawing, specifications, and detailed information are essential for accurate estimates.
- General specifications provide a broad idea, while detailed specifications offer specific quantities and materials required.
- Detailed specifications also include information on the nature and class of materials needed.
- Understanding the working method and differentiating between general and detailed specifications is crucial for accurate estimates.
15:06
"Estimation and Quantity Surveying Essentials"
- Detail is essential for understanding and will be provided later.
- The speaker moves on to the third point, discussing drawing and specific questions.
- A nostalgic reference to childhood memories of saying "Mama" is made.
- The speaker emphasizes the importance of remembering and staying silent like a child.
- Questions about material rates, manpower, and the casting of the Third One Machine are raised.
- The speaker discusses the idea of estimating data requirements for projects.
- Quantity surveying is explained as determining the exact quantity of various items.
- The importance of accuracy in estimation, casting, and valuation is highlighted.
- The speaker quizzes the audience on the concept of elevation and quantity surveying.
- The plinth area and built-up area are defined, with a focus on construction and offsets.
29:34
Calculating Plinth Area and Wall Thickness
- Wall thickness is 4.7 meters.
- 30 semi-walls with a wall thickness of 30 centimeters are needed.
- Plinth area is calculated based on the plot area.
- Plinth area includes non-setback area.
- Plinth area is calculated by subtracting and including specific areas.
- Outer wall thickness is considered in the plinth area calculation.
- Balcony area is considered at 50% or 100% based on protection.
- Veranda area is considered at 50% or 100% based on protection.
- Alcohol depression in walls depends on wall height.
- Sanitary soft area is included in the plinth area if under 2 square meters.
43:15
Plinth Area Excludes Certain Architectural Features
- Plinth area includes the courtyard, but not the verandah.
- The soft area of sanitary is considered, but not the vertical sun breaker.
- The area of Dr. Off loft is not included in the plinth area.
- The area of the main area off uncle is not included in the plinth area.
- The area of the backyard is not considered in the plinth area.
- The plinth area does not include the machine room.
- Laborers' quarters and temporary constructions are not included in the plinth area.
- The plinth area does not encompass the spiral staircase or the open stirrer.
- The tower is included in the plinth area, but not the balcony.
- The carpet area is defined as the plinth area minus the wall area, excluding certain items.
57:32
Understanding Construction Area Calculations
- The plot area is identified as the initial area for construction.
- The build-up area is the constructed area.
- δr represents the setback area, crucial for future expansion.
- The floor area is equivalent to the carpet area.
- The carpet area is calculated by subtracting the wall area from the plinth area.
- Items are excluded from the carpet area calculation.
- Excluded items include the wall area, kitchen, water closet, and circulation areas.
- Circulation areas are for movement of people within and around the building.
- Horizontal and vertical circulation areas are distinct, with different percentages provided.
- The horizontal circulation area is generally 10-15%, while the vertical circulation area is 3-5%.
01:11:47
Understanding Floor Area Ratio in Construction Industry
- The text discusses the division of a question into numerical floor area fibers.
- It explains the concept of Floor Area Fiber and its ratio.
- The text introduces the Floor Space Index or Floor Area Ratio.
- It delves into calculating the total floor area by dividing it by the total plot area.
- The process of determining the floor area ratio is detailed.
- An example involving a building's floor area and plot area is provided.
- The text guides on finding the floor space index based on the given data.
- It explains the process of estimating the total floor area for a building with multiple floors.
- The text discusses different types of estimates, including approximate, detailed, and unit rate estimates.
- It elaborates on the importance of administrative estimates and the approval process for construction projects.
01:27:18
"Calculating Costs: Importance of Accurate Estimates"
- The cost was initially Rs 20,000 and will be Rs 20,000m.
- If given the casting, the cost was Rs 10,000, leading to a lower cost.
- The calculation for the lower cost is 20000 * 10000.
- The term "20 CRA" is mentioned, along with a reference to R and C.
- The text discusses scaring individuals and mentions Rakshit's sleep.
- The need to shout to wake Rakshit up is highlighted.
- The text refers to the number of castings and asks for answers.
- Different types of estimates are discussed, including Cubic Content Estimate and Unit Rate Estimate.
- The process of calculating the unit rate estimate is explained.
- The importance of choosing the most accurate estimate is emphasized, with a focus on the Cubic Content Estimate.
01:42:52
"Revising Estimates: Crucial for Project Success"
- The estimated cost needs to be revised, with a 5% fluctuation allowed.
- Deviating from the estimated cost by 10% indirectly is common practice.
- Revising estimates is crucial and often asked in exams.
- Fresh estimates are prepared annually for repair and maintenance costs.
- Different types of sanctions are required, including administrative, financial, and technical.
- Administrative approval is needed first, followed by financial and then technical sanction.
- Technical sanction involves providing resources, creating detailed drawings, and estimates.
- The order of sanction approval is administrative, financial, and then technical.
- The session covers the importance of detailed estimates and specifications.
- The audience is encouraged to engage and provide feedback for future sessions.
01:58:32
Physics Support Group for Dedicated Students
- Contact Ho Shubham Sir P Blue for physics-related queries and doubts, ensuring quick responses and appreciating the efforts of teachers, motivating oneself by considering the hard work put in by parents, and utilizing complete notes provided by the instructor.
- Participate in sessions, practice for P.K., and engage with the telegram group for additional support, maintaining a positive attitude, appreciating efforts, and preparing for upcoming topics with friends, concluding each class with a plan for the next session at 5:00 pm.
