Practical Delivery of Industry Foundation Classes (IFC) Events/BIM Conference Season... ·...
Transcript of Practical Delivery of Industry Foundation Classes (IFC) Events/BIM Conference Season... ·...
Practical Delivery of Industry Foundation Classes (IFC) Integration of Design & Estimating
Nick Allen Architect Director Metz Architects Alan Windley QS Business Development Manager Nomitech
using IFC to generate cost deliverables in accordance
with the
RIBA Plan of Work 2014
understanding the traditional design process
The Design Process site analysis
The Design Process gathering clients ‘brief’
The Design Process stakeholder engagement
Post it’s : stacking diagrams : adjacency bubbles
The Design Process concept sketches
The Design Process concept development
The Design Process RIBA stage 2 concept design
export model to mainstream BIM authoring tool
The Design Process RIBA stage 2 concept design to detail design RIBA stage 3
It’s only now, we really start thinking about populating the design with data !
The Design Process RIBA stage 2 concept design to detail design RIBA stage 3
It’s only now, we really start thinking about populating the design with data !
NOW …..using well structured information to inform the design process
Client Facility Requirements
Structured Brief (COBie / IFC / CSV)
Room Adjacencies Disposition. Form
Concept Design RIBA Stage 2
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Spatial BIM Concept Design Plugin - SketchUp
using well structured information to inform the deign process
Structured Brief (COBie / IFC / CSV)
use IFC as a method of harvesting & manipulating the data for
the new building
Client Facility Requirements
Structured Brief (COBie / IFC / CSV)
Quarter1
Spatial BIM Concept Design Plugin - SketchUp
Client Facility Requirements
Structured Brief (COBie / IFC / CSV)
Room Adjacencies Disposition. Form
manipulate clients spatial requirements
Quarter1
Spatial BIM Concept Design Plugin - SketchUp
Client Facility Requirements
Structured Brief (COBie / IFC / CSV)
Concept Design RIBA Stage 2
Room Adjacencies Disposition. Form
Quarter1
Spatial BIM Concept Design Plugin - SketchUp
Drop 1
Client Facility Requirements
The Design Process but …… site analysis & concept
The Design Process straight into data
Structured Brief (COBie / IFC / CSV)
Quarter1
Spatial BIM Concept Design Plugin - SketchUp
Client Facility Requirements
The Design Process straight into data
Structured Brief (COBie / IFC / CSV)
Quarter1
Spatial BIM Concept Design Plugin - SketchUp
Client Facility Requirements
The Design Process using COBie to gather clients requirements
alternative …..use COBie
The Design Process using COBie to gather drop 1 data
….. then convert COBie to a .csv file using AEC3’s ‘AEC3 Transform1’ tool kit
Contact, Facility, Floor (including elevation and heights), Space (including areas), Zone and Type (specifications and materials) , Component (occurrences) and System (functional groups)
The Design Process spatial BIM generated in Sketchup from COBie
….. Using import of .csv file to SketchUp
The Design Process Quarter 1 define, spaces adjacencies and stacking
random distribution of spaces based upon spreadsheet…. no actual drawing involved
The Design Process Quarter 1 define, spaces adjacencies and stacking
automatic room renumbering, room area, net and gross floor areas.
The Design Process Quarter1 site massing in context
……. do all of this, live with the stakeholders – on the fly
The Design Process export spatial BIM via IFC to BIM tools
RIBA Stage 1
The Design Process develop concept design toward stages 2 & 3 in sketchup
The Design Process Quarter1 automatically generate baseline walls, floor slabs and roofs for generation of ‘component’ elements
The Design Process Classify ‘components’ of project to BCIS classification
The Design Process Classify ‘components’ of project to BCIS classification
The Design Process Classify ‘components’ of project to BCIS classification (or other)
The Design Process Classify ‘components’ of project to BCIS classification
The Design Process export to view in Google Earth
Massing studies to context / adjacent buildings
The Design Process
Concept Design RIBA Stage 2
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The Design Process IFC Export to COBie
Concept Design RIBA Stage 2
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The Design Process IFC Export from SketchUp to Solibri
The Design Process Design Development in BIM Authoring Tool
Concept Design RIBA Stage 2
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AND FINALY…………….
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Integration of Design & Estimating
Alan Windley
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AND FINALY…………….
Here we start with the model provided by Nick and just showing spaces (RIBA Stage 1).
The Design Process to Estimating IFC Export to CostOS
But we can interrogate the IFC content by switching on the other elements.
All the content is now clearly visible to allow us to associate pricing information and at any level of granularity you require. It may be as simple as cost per m2, m3 etc or down to labour, plant material resource level dependant upon the cost data you have available.
Here we have isolated the slabs ready to associate cost data. Note: we are associating cost data to the model entity and not simply abstracting quantities to assign to an existing described Bill or Line item!
In this example, we are associating BCIS cost data down to labour, plant material level. Alternatively, this could be simple rate data from your own historic database of costs.
The cost data now associated and whose relationship is maintained.
The priced Cost Plan/Bill/Estimate begins to take shape and the elements priced clearly visualised.
Whilst we isolated all the slabs to give us a total volume/area, the information in the IFC allows us to isolate and visualise the cost of each individual slab.
We continue to identify more elements and associate cost data. In this case, the doors, and in my case, BCIS cost data again.
The Cost Plan/ Estimate growing and in an industry standard format (in this case SMM7)
So add in the walls. For early phase cost plans you can simply select all walls and attach high level cost data dependant on the level of information you have. In this case, the walls have been tagged as different types so you could have isolated each type and associated relevant cost data.
Walls added and priced.
This model contained 78 individual wall areas but we can still visualise the quantities and the cost of each area.
Most common question! What if, especially in the early phases, we don’t have much idea of the specification? i.e., the Architect does not put that detail into the model!
We can use parametric cost assemblies to make our assumptions and offer value engineering opportunities. So we’ll handle the ‘walls’ situation slightly differently this time.
Instead of associating specific cost data, we associate a cost assembly, in this case a wall component.
This allows us, in the absence of detailed information, to make our assumptions, in a sense, no differently to traditional cost planning methods.
All the cost data dependant on your assumptions is associated to the wall elements and added to the Cost Plan
When more detail becomes available, you can simply modify your assumptions and visualise the impact on cost. This really is now design working hand-in hand with cost.
What about coding structure? Regardless as to how the Architect may have classified elements to measure and price, items can be cross coded against any chosen structure, within the same estimate.
e.g., SMM7, NRM 1, BCIS Elements, Uniclass etc.
Why is associating cost important rather than merely abstracting quantities? Design progression and revisions!
When a revised model becomes available, the revision can be loaded side by the original and changes identified.
Because the costs were associated originally, we can get an immediate indication of the impact on quantities and cost.
Leaving us just to commit the changes to update the Cost Plan
So from even the earliest of models, the design process can work hand-in-hand with the estimating process utilising IFC.
Practical Delivery of Industry Foundation Classes (IFC) Integration of Design & Estimating
Nick Allen Architect [email protected] Alan Windley QS [email protected]