Draft of Information Delivery Manual (IDM) for Quantity Take-Off (QTO) in Road Projects at Detailed Design Phase - Chapts 6-8

Sep 12, 2026

The draft Information Delivery Manual (IDM) establishes a process map for Quantity Take-Off (QTO) in road projects during the detailed design phase. It specifies how to precheck and validate detailed design BIM models, define modification items, adjust road spatial, earthwork, and drainage models, and model subsidiary facilities. It also covers exporting IFC files, calculating quantities and costs, reviewing results, preparing submissions for approval, and producing analysis and evaluation outputs, guided by decision-point gateways.

LanguageEnglish

CategoryPresentations

FormatPDF

Pages42

Reading Time15 min

AccessFree to download

Process Map

Overview

Quantity Take-Off in Road projects at Design Phase

Process Map: Quantity Take-Off of Road Projects at Design Phase

Specification of Processes

Precheck Detailed Design BIM Model

Define Modification Items for QTO BIM Modeling

Modify Road Spatial Model

Modify Earthwork Model

Modify Road Body Model

Modify Drainage Model

Modify Subsidiary Facility Model

Validate BIM Model for QTO

Export IFC file

Calculate Quantities & Costs

Review Quantity & Cost Analysis Results

Prepare Submission for Review & Approval

Specification of Decision Point Gateways

Valid BIM Model for QTO?

Results Acceptable?

July. 01 2016 6. Psets(PropertySets) V1.0 for IfcRoad by KICT A. Road 1. Pset_RoadBodyDesignParameter_K.xml 2. Pset_RoadElementDesignParameters_K.xml 3. Pset_RoadAlignmentDesignCommon_K.xml 4. Pset_RoadCurbCodeCommon_K.xml 5. Pset_RoadMedianstripDesignCommon_K.xml 6. Pset_RoadMedianstripManagement_K.xml 7. Pset_RoadPavementCommon_K.xml 8. Pset_RoadProjectMgmtCommon_K.xml 9. Pset_RoadShoulderCommon_K.xml 10. Pset_CaissonCommon_K.xml 11. Pset_CulvertCommon_K.xml 12. Pset_EarthworkElementCommon_K.xml 13. Pset_RetWallCommon_K.xml B. Bridge 1. Pset_BridgeAbutmentCommon_K.xml 2. Pset_BridgeCableCommon_K.xml 3. Pset_BridgeCopingCommon_K.xml 4. Pset_BridgeDeckPlateCommon_K.xml 5. Pset_BridgeElementCommon_K.xml 6. Pset_BridgeGirderCommon_K.xml 7. Pset_BridgePierCommon_K.xml 8. Pset_BridgeProject_K.xml 9. Pset_BridgeSegmentCommon_K.xml 10. Pset_BridgeSpanCommon_K.xml 11. Pset_BridgeTowerCommon_K.xml C. Tunnel 1. Pset_TunnelElementCommon_K.xml 2. Pset_TunnelLiningCommon_K.xml 3. Pset_TunnelLiningSegmentCommon_K.xml 4. Pset_TunnelProject_K.xml D. Drainage 1. Pset_GutterFittingCommon_K.xml 2. Pset_GutterSegmentCommon_K.xml E. Subsidiary Facilities 1. Pset_GuardCommon_K.xml 2. Pset_PavementAdditionCommon_K.xml 3. Pset_RoadSignEquipmentCommon_K.xml July. 01 2016 7 . Qsets(QuantitySets) V1.0 for IfcRoad by KICT 1. Qto_CaissonQuantities_K.xml 2. Qto_CulvertQuantities_K.xml 3. Qto_DistributionChamberElementBaseQuantities.xml 4. Qto_EarthworkElementQuantities_K.xml 5. Qto_FlowFittingQuantities_K.xml 6. Qto_FootingBaseQuantities.xml 7. Qto_GuardQuantities_K.xml 8. Qto_GutterFittingQuantities_K.xml 9. Qto_GutterSegmentQuantities_K.xml 10. Qto_PavementAdditionQuantities_K.xml 11. Qto_PipeSegmentBaseQuantities.xml 12. Qto_RetainingWallQuantities_K.xml 13. Qto_RoadCurbQuantities_K.xml 14. Qto_RoadMedianStripQuantities_K.xml 15. Qto_RoadPavementQuantities_K.xml 16. Qto_RoadShoulderQuantities_K.xml 17. Qto_RoadSignElementQuantities_K.xml 18. Qto_SiteBaseQuantities.xml 19. Qto_SiteQuantities_K.xml 20. Qto_SlabBaseQuantities.xml 21. Qto_WallBaseQuantities.xml July. 01 2016 Korea Institute of Civil Engineering and Building Technology buildingSMART alliance Date: 10/25/15 Version: 1.0 Category: Engineering Report Draft of Information Delivery Manual (IDM) for Quantity Take-Off (QTO) in Road Projects at Detailed Design Phase Copyright notice Copyright © 2015 Korea Institute of Civil Engineering and Building Technology (KICT) . All Rights Reserved. Table of Contents 1. Process Map ....................................................................................................................... 508 1.1 Overview ................................................................................................................... 508 1.1.1 Scope of the IFC Road project ............................................................................. 508 1.1.2 Quantity Take-Off in Road projects at Design Phase........................................... 509 1.2. Process Map : Quantity Take-Off of Road Projects at Design Phase ...................... 510 1.2.1 Specification of Processes .................................................................................... 511 1.2.1.1 Precheck Detailed Design BIM Model [1.1] .......................................................... 512 1.2.1.2 Define Modification Items for QTO BIM Modeling [1.2] ................................. 512 1.2.1.3 Modify Road Spatial Model [1.3] .............................................................................. 512 1.2.1.4 Modify Earthwork Model [1.4] .................................................................................. 512 1.2.1.5 Modify Road Body Model [1.5] ................................................................................. 512 1.2.1.6 Modify Drainage Model [

FAQs

What is the purpose of the Information Delivery Manual (IDM) in this draft?

It defines an end-to-end process for performing Quantity Take-Off (QTO) in road projects at the detailed design phase, including modeling, exporting, calculation, review, and reporting steps.

Which BIM-related steps are included before QTO calculations?

The process includes a precheck of the detailed design BIM model, defining modification items, modifying road spatial/earthwork/road body/drainage/subsidiary facility models, and validating the BIM model for QTO.

How are quantities and costs delivered and validated after exporting IFC?

After exporting the IFC file, the draft covers calculating quantities and costs, reviewing quantity and cost analysis results, preparing submissions for review and approval, and producing analysis and evaluation outputs using decision-point gateways.

Sep 12, 2026

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