Copyright 2008, Open Geospatial Consortium Making Location Count The Quantity Take-off Thread Early Design Quantity Take-off.

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Presentation transcript:

Copyright 2008, Open Geospatial Consortium Making Location Count The Quantity Take-off Thread Early Design Quantity Take-off

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Outline Early design Quantity take-off Building on the work of others Information Delivery Manual (IDM) Model View Definition (MVD)

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Early Design General model for Testbed is Integrated Project Delivery Not defining generic or standard project phase terms Testbed seeks to Define what we want to achieve with the QTO and when Nature of and types of information that are required to support costing What the design team could and should do during early design to generate quality of information needed for costing

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Quantity Take-off Why QTO Use of qualitative information to augment the quantitative information Interaction of modelers and estimators – transport mechanisms and the methods of exchange to communicate more seamlessly Role of the estimator

OGC Copyright 2008, Open Geospatial Consortium Making Location Count Quantity Takeoff Tool Quantity Takeoff Tool IFC exportIFC import QTO Technical Overview file system XXX Schedule XXX Schedule Construction Recipe Schedule Construction Recipe Schedule Unit Cost Schedule Unit Cost Schedule quantity import quantity export BIM-Authoring Tool BIM 1 BIM 2 BIM N Schedule Web Services QTO IFC store QTO store

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Generic AEC/FM BIM View Description Concept Design to QTO/Cost Estimating Design Model (objects, attributes) Design Model (objects, attributes) Design Quantities (object quantities) Design Quantities (object quantities) Production Quantities (assemblies, items, resources) Production Quantities (assemblies, items, resources) this view Based on BLIS view ‘Arch. Design >> Quantities take off / cost estimating’ (2000) Based on SABLE DAPI ‘Quantity Information for Cost Estimation’ (2004) Based on IAI German Speaking Chapter (GSC) adaptation for ‘Base Quantities’ (2007) TESTBED THREAD AREA OF INTEREST

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Generic AEC/FM BIM View Description Concept Design to QTO/Cost Estimating Three levels of QTO information exchange agreed internationally QTO Level 1 – BIM objects, with geometry and definition properties, no element quantities QTO Level 2 – BIM objects and basic quantities that are useful internationally, but no geometry QTO Level 3 – BIM objects and extended quantities that require national and local calculation rules, but no geometry QTO Thread view is QTO Level 2

OGC Copyright 2008, Open Geospatial Consortium Making Location Count use case 1.export/upload BIM model with base quantities according to MVD 2.import/download BIM model (+ base quantities) 3.validate/aggregate quantities, define task based quantities, access catalog (of recipes/formulas) 4.generate bill of quantities/ export/upload to document server 5. QTO Early Design Thread BIM Authoring

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread IDM Overview Goals and objectives Focused on discrete process Specifies Where a process fits and why it is relevant Who are the actors What is the information created and consumed How the information should be supported by software solutions Communication document between BIM users and software providers User needs in plain language – perspective of the user Software developers know what exchanges are necessary Leads to Model View Definition (MVD) Diagrams

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Unique aspect for this task Alignment with BPEA IDM Fast track of QTO – IDM parallel effort with MVDs IDM Components Process Model Diagram Exchange Requirements

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread IDM Outline Process Model Overview Specification of process Specification of data objects Specification of coordination point gateways Exchange requirements for QTO Input (early design) Exchange Requirements for Quantity Take-off Output (early design)

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Sub-process

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Sub-process

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Exchange Requirements Object types and properties IFC Model representation

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Exchange Requirements Object Types IFC system objects Geospatial data Properties (metadata) Project Site Building Building Story Space Wall Slab Beam Column Opening Door Window

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Exchange Requirements Object Types Curtain Wall Stair Flight Ramp Flight Equipment Plumbing Fixtures HVAC System Electrical System Hot Water System Cold Water System Vertical Circulation System Exchange Requirements Object Types IFC system objects Properties (metadata)

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Example Exchanges Prepare/Adjust BIM for QTO/Cost Estimate [1.1] Derive Building Information Assumes a building model with geometry is available – building layout Space configuration Outline layout of building elements Determine proposed positions of walls and doors Building Object Type for Quantity Take-off Functional classification source is OmniClass table 11 (construction entities by function) For the Testbed, use the IBC classifications to align with BPEA

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Example Exchanges Create Project Space Types [1.1.1] Space Object Type for Quantity Take-off The functional classification source is OmniClass table 13 (space by function) For the Testbed, use the GSA space types to align with BPEA Spaces may be Interior or Exterior Optional source OmniClass table 14 (space by form)

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Reference: BSA-001

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread

OGC Copyright 2008, Open Geospatial Consortium Making Location Count QTO Early Design Thread Final Thoughts Release of IDM for public comment – late January Same Test Model as BPEA Thread

OGC Copyright 2008, Open Geospatial Consortium Making Location Count Quantity Takeoff Tool Quantity Takeoff Tool IFC exportIFC import QTO Technical Overview w/ XML & Web Services file system XXX Schedule XXX Schedule Construction Recipe Schedule Construction Recipe Schedule Unit Cost Schedule Unit Cost Schedule quantity import quantity export BIM-Authoring Tool BIM 1 BIM 2 BIM N Schedule Web Services QTO IFC store CPD Catalog post IFCxml QTO store post IFCxml

OGC Copyright 2008, Open Geospatial Consortium Making Location Count Quantity Takeoff Tool Quantity Takeoff Tool IFC exportIFC import QTO Technical Overview w/ XML & Web Services file system XXX Schedule XXX Schedule Construction Recipe Schedule Construction Recipe Schedule Unit Cost Schedule Unit Cost Schedule quantity import quantity export BIM-Authoring Tool BIM 1 BIM 2 BIM N Schedule Web Services QTO IFC store Arch. CPD Catalog post IFCxml QTO store post IFCxml QTO CPD Catalog