DeHub Talks: 03 Decoding the Bill of Quantity | BOQ | Architect SSR | Dehub for Architects |

Updated: November 19, 2024

Architect SSR


Summary

The video delves into the importance and process of creating a bill of quantities in architectural projects, emphasizing its role in project costing and quality control. It highlights the significance of clear specifications and itemization to prevent misunderstandings and ensure accurate cost comparisons. The speaker provides insights into creating a bill of quantities, including steps like conducting quantity surveys, involving civil engineers, and verifying quantities for accuracy. Additionally, the video discusses the breakdown of a bill of quantities structure with item descriptions, contractor rates, and subtotals for various works, emphasizing the need for thorough verification and negotiation with contractors to ensure cost accuracy. The importance of detailed material rate lists, negotiation capacities, and recovery methods for client-supplied items is also emphasized to enhance project cost control.


Introduction to Weekly Talks

The speaker introduces the weekly talks for architects, restarting after a break, with sessions on Sundays from 10 to 11 a.m.

Decoding Bill of Quantities

Exploration of the topic of bill of quantities, its importance, and process, focusing on itemized quantities, preliminary drawings, and its role in project costing.

Understanding Bill of Quantities

Explanation of what bill of quantities entails, including itemized quantities, specifications, assumptions, and its role in the costing process.

Purpose and Importance of BoQ

Discussion on the significance of bill of quantities in providing cost comparisons, avoiding ambiguity, and ensuring project control and quality.

Challenges in Costing

Highlighting the challenges in costing projects due to contractor variations, lack of clarity, and the importance of detailed bill of quantities.

Avoiding Ambiguity in Costing

Importance of clear specifications and itemization in bill of quantities to prevent misunderstandings, ensure accuracy, and facilitate fair comparisons.

Process of Creating BoQ

Step-by-step process of creating a bill of quantities including preliminary drawings, quantity surveys, and verification steps to ensure accuracy.

Verification and Review

Importance of cross-checking quantities, involving civil engineers, and conducting bid clarification meetings to ensure accuracy and clarity in the bill of quantities.

Sample Calculation Sheet

The speaker explains the calculation sheet used at Space Merch for quantity survey and verification. It includes details of materials, GST rates, RCC forms, and individual material quantities.

Composite Items Calculation

Details on how composite items like supply and execution are calculated along with an overall summary provided by the quantity surveyor.

Bill of Quantity

Explanation of the bill of material and bill of quantity division, labor rates, and entering rates by contractors for different works like civil, excavation, reinforcement, and plastering.

Abstract Page in BOQ

Description of the abstract page in the Bill of Quantity showing civil works, composite works, and common items with linked quantities in the form of an Excel sheet.

Detailed BOQ Structure

Breakdown of the BOQ structure with item descriptions, specifications, contractor-entered rates, and subtotals for various works including civil, painting, plumbing, and sanitary works.

Composite and Fabrication Works

Explanation of composite works like UPVC installations, painting, and fabrication works, detailing the separate procurement method for such items.

Material Rate List and Contractor Details

Importance of material rate lists filled by contractors, negotiation capacities, recovery methods for client-supplied items, and the need for thorough verification from contractors.

Interior Bill of Quantity

An overview of creating a bill of quantity for interiors, including room-wise specifications, rates entered by contractors, and the significance of detailing items and existing materials.

Interior Execution Firm Services

Description of services provided by an interior execution firm for architects and contractors, including design, estimation, visualization, and project execution.

Calculation Coefficients and Practical Examples

Discussion on calculation coefficients for materials like vitrified tiles and cement, practical examples of ordering quantities, and the importance of engineering reconciliation for waste control.


FAQ

Q: What is the importance of the bill of quantities in project costing?

A: The bill of quantities is important in project costing as it provides cost comparisons, helps avoid ambiguity, and ensures project control and quality.

Q: What are some challenges in costing projects mentioned in the text?

A: Challenges in costing projects include contractor variations, lack of clarity, and the importance of having a detailed bill of quantities.

Q: What is the step-by-step process of creating a bill of quantities?

A: The process includes preliminary drawings, quantity surveys, and verification steps to ensure accuracy. It also involves cross-checking quantities, involving civil engineers, and bid clarification meetings.

Q: What details are typically included in the calculation sheet used for quantity survey and verification?

A: The calculation sheet includes details of materials, GST rates, RCC forms, individual material quantities, composite items like supply and execution, and an overall summary provided by the quantity surveyor.

Q: How are composite items like UPVC installations or painting calculated in the bill of quantities?

A: Composite works like UPVC installations or painting are calculated by detailing a separate procurement method for such items within the bill of quantities.

Q: Why is it important to have clear specifications and itemization in the bill of quantities?

A: Clear specifications and itemization in the bill of quantities are important to prevent misunderstandings, ensure accuracy, and facilitate fair comparisons during the project costing process.

Q: What is the significance of the abstract page in the Bill of Quantity?

A: The abstract page in the Bill of Quantity shows civil works, composite works, and common items with linked quantities in the form of an Excel sheet, providing a clear breakdown of the BOQ structure.

Q: What are some key considerations when creating a bill of quantity for interiors?

A: When creating a bill of quantity for interiors, it is important to include room-wise specifications, rates entered by contractors, and to detail items and existing materials for accurate costing.

Q: Why is it important to have detailed material rate lists filled by contractors in the bill of quantities?

A: Detailed material rate lists in the bill of quantities are important for negotiation capacities, recovery methods for client-supplied items, and to ensure thorough verification from contractors.

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