1.3 On-screen measurement workflow
Figure 1.2 illustrates a detailed workflow for conducting on-screen measurement using RIB CostX software, a digital platform adopted in the construction industry for quantity take-off and cost planning. In this handbook, the terms RIB CostX and CostX are used interchangeably. This process forms the practical backbone of this handbook, guiding users through the standard industry methodology from the import of drawings to the generation of reports. The workflow begins by adding project drawings into CostX. These drawings, typically received in PDF, CAD, or image file formats, form the foundation for all subsequent measurements. Once imported, the drawings are calibrated to ensure the measurements taken within the software are accurate. This involves setting a known reference dimension on the drawing to establish the scale. Following calibration, dimension groups are created for each trade or work category (e.g. concrete, groundwork and reinforcement). These groups help organise the measurement tasks and align with how quantities are typically reported in industry. Measurements are then carried out using CostX’s on-screen tools, allowing the user to trace linear or area components directly on the digital drawings. Once measurements are complete, the quantities are transferred to the CostX workbook, which serves as a digital version of the traditional Bills of Quantities spreadsheet. Each measured item is accompanied by a clear description. This ensures clarity in how work items are documented.
After transferring quantities, users can generate reports such as the unpriced BQ. These reports list each item with its corresponding description, unit, and quantity, but exclude prices-making them ideal for tendering purposes. At the same time, users can apply markups to the drawings to visually identify measured components. These annotated drawings, when printed or exported as PDFs, provide a visual record that complements the formal quantity reports.
Screenshots can also be taken throughout the measurement process to document complex areas or support instructional use. These visual captures serve as an audit trail and can be embedded in technical documentation or shared for collaborative review. Finally, all outputs, including the BQ report, marked-up drawings, and screenshots are compiled into a cohesive report package. This comprehensive documentation reflects best practices in contemporary cost management and supports transparency in the estimation process.
Throughout this handbook, this workflow is demonstrated step by step using real-world case studies and trade-specific examples. The aim is to support users of this handbook in mastering on-screen measurement techniques that are directly aligned with current industry practices and digital construction workflows.
