Quantity Surveying / Commercial Engineering

This lecture introduces the Quantity Surveying (QS) department and its vital role in construction projects. You will learn why quantity take-off is performed and how it is carried out as the foundation for cost control and project financial management. The lecture also sets the stage for upcoming topics, where we will cover subcontractor invoices, client invoices, and variation orders in detail. By the end, you will understand the importance of accurate quantity take-off and how it supports effective project planning and budgeting. This will help you appreciate the QS department’s critical role in linking technical execution with financial success.

This lecture provides a practical introduction to quantity take-off by working through an example from the Bill of Quantities (BOQ). You will learn how to read the method of measurement and interpret the item description in order to determine the correct approach for measurement and take-off. By the end, you will be able to connect the BOQ details with practical quantity surveying tasks. This will help you build confidence in analyzing BOQs and preparing accurate measurements for real projects.

This lecture focuses on how to present your quantity take-off to the consultant for approval rather than starting the measurement from scratch. You will learn different methods of presenting quantities for key structural items such as plain concrete footings, reinforced concrete footings, and concrete columns. By the end, you will understand how to prepare clear and accurate QS submissions that meet consultant requirements. This will help you develop the professional skills needed to communicate your work effectively and gain approvals in real projects.

This lecture continues the explanation of quantity take-off by focusing on structural elements such as reinforced concrete slabs and beams. You will learn how these items are measured and documented within the BOQ, with practical insights into the methods used for accurate take-off. By the end, you will have a deeper understanding of measuring major structural components. This will help you strengthen your quantity surveying skills and apply them confidently in real-world projects.

This lecture extends the quantity take-off explanation to finishing works, including items such as blockwork and plastering. You will learn how to measure and present these activities within the BOQ, building on the previous structural examples. At the end of this section, I will also encourage students to reach out if they face challenges with any specific item they cannot measure or find clear resources for. I will do my best to provide guidance and, when possible, create additional YouTube content to address these topics so that everyone can benefit. By the end, you will see how quantity take-off applies across both structural and finishing works. This will help you gain practical confidence in handling different project items and engaging with the learning community.

This lecture highlights key considerations to keep in mind while performing quantity take-off to help you manage your effort effectively and minimize the possibility of errors. You will learn practical tips for organizing your work, double-checking critical measurements, and maintaining accuracy across different BOQ items. By the end, you will be equipped with strategies to work more efficiently and confidently. This will help you develop a professional approach to quantity surveying and build trust in the quality of your work.

This lecture explains the role of subcontractors in construction projects and how they are selected and contracted. You will learn the key steps in subcontractor engagement, including the evaluation process, agreement signing, and the financial implications of their work. A sample subcontract agreement will also be presented, with a breakdown of its main contents and clauses. By the end, you will have a clear understanding of how subcontractor relationships are managed contractually and financially. This will help you gain practical insight into handling subcontractor agreements and ensuring smooth collaboration on projects.

This lecture continues the discussion on subcontractor invoices, focusing on how to prepare an invoice based on the terms of the subcontract agreement. You will learn the step-by-step process of preparing a subcontractor payment application and the key points to review carefully in order to minimize errors. By the end, you will be able to prepare accurate and contract-compliant invoices for subcontractors. This will help you develop both the technical and practical skills needed to manage subcontractor payments effectively.

This lecture introduces client invoices and the essential elements required to prepare them. Building on previous topics such as contracts and quantity take-off, you will now learn how to calculate progress percentages and reflect them accurately in the client invoice. By the end, you will understand how client invoices demonstrate project progress and support financial management. This will help you gain practical skills in preparing professional invoices that link technical progress with contractual and financial reporting.

This lecture continues the explanation of client invoices, focusing on additional elements that may appear in accordance with the contract. You will learn how to apply price adjustment clauses when included in the agreement, as well as how to account for materials on site in the invoice. The lecture also covers the common deductions applied in client invoices and explains the structure and content of the invoice cover page. By the end, you will have a complete understanding of how client invoices are prepared and reviewed in real projects. This will help you build the professional expertise needed to manage project payments with accuracy and contractual compliance.

This lecture explains the concept of variation orders, what they mean, and when a contractor has the right to claim them. You will learn the different methods used to calculate their cost and review a practical example where a contractor submitted a variation order claim. By the end, you will understand how variation orders are identified, justified, and priced in construction projects. This will help you develop the ability to manage contractual changes effectively and protect project interests.