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5D BIM Quantity Takeoff & Cost Estimation
A practical, tool-focused programme covering model-based quantity extraction in Revit, Dynamo automation, and Navisworks quantification — through to 5D cost reporting deliverables used by quantity surveyors and BIM teams across the GCC.
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Description
Programme Highlights
No Manual Takeoff
Extract area, volume, count, and component quantities directly from the BIM model — eliminating manual measurement and the errors that accompany it.
Dynamo Automation
Build parametric Dynamo scripts that export quantities across multiple model categories to Excel — cutting hours of repetitive work on large GCC projects.
Navisworks Cross-Validation
Use Navisworks selection sets and quantification tools to validate quantities across federated architectural, structural, and MEP models — essential for multi-discipline GCC projects.
Tender-Ready BOQ Output
Produce 5D cost reports, bills of quantities, and cost plan deliverables formatted for project owners, QS firms, and PMC teams operating across Saudi Arabia, UAE, and Qatar.
Course Curriculum — 5 Modules
Introduction to 5D BIM & Quantity Extraction
This module establishes a precise, working understanding of what 5D BIM means in practice — distinguishing it from the marketing use of the term and grounding participants in the real data relationships that make model-based cost planning valuable. The 3D, 4D, and 5D dimensions are explained in sequence: how geometry generates quantities, how quantities are linked to schedules, and how the combination produces a cost-loaded project model that quantity surveyors and cost planners can interrogate at any phase. The module examines how AEC firms operating in Saudi Arabia, UAE, and Qatar currently use 5D BIM on live projects — the difference between firms using BIM for visualisation only and those extracting measurable value from model data at tender, design development, and construction stages. BIM maturity levels (ISO 19650 alignment, LOD 200 through LOD 400 quantity reliability) are addressed in practical terms: what level of model detail produces reliable quantities for conceptual cost planning versus detailed BOQ production, and how to communicate model-based quantity limitations clearly to project clients and QS counterparts. The module concludes by mapping where quantity takeoff sits within the full BIM project workflow — from the design team's parametric model through the QTO extraction, cost plan production, tender BOQ, and contract sum reconciliation that define the quantity surveyor's workflow on GCC infrastructure and building projects.
Quantity Extraction in Revit — Schedule Tables, Element Properties & Export
Revit's schedule tool is the primary model-native quantity extraction mechanism — and when configured correctly, it eliminates the need for any manual measurement across the entire project scope. This module provides a comprehensive, hands-on walkthrough of every Revit schedule type relevant to quantity takeoff. Material takeoff schedules extract quantities by material — concrete volume by mix specification, rebar mass by grade, masonry unit count, finish areas by type — with correct field configuration, filtering by phase and discipline, and grouping by element category for BOQ-aligned output. Multi-category schedules enable cross-discipline QTO from a single schedule view: extracting door, window, wall, floor, and ceiling data simultaneously with the parameter fields that QS firms and cost estimators require. Keynote legends are configured to produce the specification-linked component schedule that connects quantity data to NBS or project specification clauses — critical for tender BOQ preparation on Saudi and GCC government projects. The export workflow covers Revit's native ODBC and Excel export options, formatting for import into CostX, Buildsoft, or bespoke cost estimation platforms used by GCC QS firms, and the schedule template management system that allows cost teams to maintain consistent extraction formats across multiple projects and Revit versions.
Automating Quantities with Dynamo
Dynamo is Revit's built-in visual programming environment — and for large, complex BIM projects of the type prevalent across Saudi Vision 2030 megaprojects, NEOM infrastructure packages, and UAE mixed-use developments, it transforms quantity extraction from a time-consuming manual schedule configuration task into an automated, repeatable workflow. This module introduces Dynamo from first principles for participants without prior scripting experience: the node-based visual programming interface, data types, list management, and the BIM-specific Dynamo nodes that access Revit element geometry, parameters, and relationships. Practical scripts are built progressively through the module: a script that queries all wall elements in the model and exports length, area, volume, and material parameters to a structured Excel workbook; a multi-category extraction script that pulls quantity data from floors, roofs, structural columns, and beams simultaneously; a script that applies computed fields (unit conversion, area adjustment factors, waste allowances) before export to match the quantity format required by the project BOQ template; and a script that produces a per-level quantity breakdown aligned with the project's cost coding structure. The module addresses script maintenance and reuse — packaging parametric scripts as Dynamo packages, updating scripts for model revisions, and structuring script libraries that cost teams can deploy across multiple projects and office locations in the GCC.
Quantity Management in Navisworks
Navisworks Manage's Quantification module provides quantity takeoff capability across federated multi-discipline models — the scenario that characterises most real GCC construction projects, where architectural, structural, MEP, and civil models are published separately and combined for coordination. This module covers the complete Navisworks QTO workflow from a production perspective. The federated model environment is established: importing NWC files from Revit, linking to project schedule via TimeLiner, and configuring the model display for quantity extraction. Navisworks selection sets are used systematically for quantity segmentation — defining sets by element category, discipline, level, zone, and cost code to produce the quantity breakdown structure that QS teams require for BOQ preparation. The Quantification workbook is configured: adding resources (items, materials, labour), mapping BIM element properties to quantity fields, and establishing quantity calculation rules that handle the complexity of MEP quantity extraction — pipe run lengths, duct area, fittings count — that Revit schedules alone cannot fully produce. Cross-validation between Revit-extracted and Navisworks-extracted quantities is addressed as a quality assurance workflow — identifying discrepancies caused by model federation, element duplication, or phase filtering differences that affect the reliability of BIM-derived quantities on contract documents. The module concludes with quantity export from Navisworks: formatted Excel output, PDF quantity reports, and the workflow for transferring Navisworks quantity data into CostX or similar QS-standard cost estimation platforms used by GCC quantity surveying practices.
Cost Integration & 5D BIM Reporting
The final module connects extracted quantity data to the cost estimation frameworks that govern how construction costs are planned, reported, and validated on GCC projects. Participants work through the complete workflow from BIM-extracted quantities to client-ready cost deliverables. Bill of Quantities preparation covers applying unit rates (from GCC cost databases including AECOM, Faithful+Gould, and regional benchmarks) to extracted quantities, configuring work section breakdowns aligned with CESMM3 or NRM2 measurement rules, and formatting BOQ output for Saudi Aramco, NEOM, ROSHN, and Abu Dhabi government project submission standards. Cost plan production covers translating BIM quantities into elemental cost plans at RIBA Plan of Work or PMI project phase milestones — the format that project sponsors and client cost managers require for budget approval at design gateway reviews. 5D BIM reporting covers the integration of the cost-loaded model into visual project cost dashboards: configuring BIM model views that display cost data by element, phase, or cost code using Revit model graphics and Dynamo-driven data visualisation, and producing the project cost status reports and model-linked cost review presentations that increasingly define the deliverable standard for cost management on major Vision 2030 programme projects, NEOM infrastructure packages, and UAE mixed-use developments. The module concludes with professional report production — structuring the 5D BIM cost report for project owners, QS firms, PMC consultants, and financiers, with appendices covering quantity extraction methodology, model LOD statement, and quantity exclusion schedules.
Software, Standards & Platforms
Course Outcome
On completing this course, you will be able to extract quantities directly from BIM models using Revit and Navisworks, automate metric computation workflows with Dynamo, and produce professional 5D BIM cost estimation reports — skills directly applicable to quantity surveying, BIM coordination, and cost planning roles across the Middle East construction sector.