Quantity Surveying · Practical Guide
How to Prepare a Bill of Quantities (BOQ): Step-by-Step Practical Guide
Preparing an accurate Bill of Quantities requires methodical technical discipline, a deep understanding of civil engineering construction methods, and strict adherence to measurement rules. Here is a practical, step-by-step methodology used by Fusion Developers' quantity surveying team to transform engineering drawing sets into audited BOQ packages.
The 5-Step BOQ Preparation Workflow
- Step 1 — Comprehensive Drawing Audit: Review architectural, structural, and MEP drawing sets simultaneously to identify specification notes, dimensions, and missing details.
- Step 2 — Taking Off Quantities (Mensuration): Systematically calculate lengths, areas, and volumes using standardized takeoff sheets. Group quantities by trade division (e.g. substructure concrete separated from superstructure beams).
- Step 3 — Squaring Dimensions & Abstracting: Multiply and sum dimensions, applying standard deduction rules (such as deducting door/window openings from wall plastering totals).
- Step 4 — Developing Rate Build-Up Schedules: Cross-reference local raw material market rates (cement, sand, crush, rebar) with daily labor productivity outputs (e.g. cubic feet of concrete poured per mason-hour).
- Step 5 — Compiling the Final BOQ Document: Assemble item descriptions, units of measurement, quantities, rates, and totals into an organized bill with grand summary and contract preliminaries.
Frequently Asked Questions
What is the standard measurement deduction rule for brick masonry openings in Pakistan?
Under standard measurement rules, openings under 1.0 sq ft (0.1 m²) are not deducted from brickwork or plastering. For openings between 1.0 and 30.0 sq ft (such as standard windows and doors), the opening face is deducted, while window jambs, sills, and soffits are not measured separately, providing fair labor compensation.