Transcript rlb
Delivering sustainability BIM And the cost of sustainability BIM the cost of sustainability January 2013 Introduction This is a case study of a PassivHaus primary school that has been collaboratively designed, built and operated. For a modest capital investment PassivHaus generates very low: • Power consumption kW • Utility bills (revenue costs) £ • Carbon emissions CO2 The tools required include: • Collaboration • Benchmarking • Life cycle cost • Building Information Modelling • Facilities management BIM the cost of sustainability January 2013 Collaboration Collaboration Structural Architect QS BIM the cost of sustainability MEP PM Main contractor Sub contractor Client FM January 2013 Design, Build, Operate BIM the cost of sustainability January 2013 BIM Collaboration Information is added to the same model as the design progresses. The coordinator can merge the separate files by converting to IFC “common” file format The Design & Build contractor can add supply chain information The client owns the completed BIM and amends with refurbishment and adaption BIM the cost of sustainability TEKLA Structural ArchiCad Architecture Data enrichment Bentley Systems MEP Quantity extraction Main contractor Specialist sub contractor Client FM January 2013 Benchmarking Benchmarking BIM the cost of sustainability January 2013 Benchmark: Capital The Cabinet Office has published benchmarks Secondary school of 8-10,000 m² is average £ 2,158/m² This school (Primary) 2,400m² £ 2,077/m² BIM the cost of sustainability January 2013 Benchmark: power, revenue and carbon CIBSE has produced benchmarks for power consumption and carbon emissions. Schools and seasonal public buildings Previous school Average F D 260 kW/m² 190 kW/m² Target B 120 kW/m² (less than half) £11,000 73 tCO2 (previous £27,000) (previous 190) Utility cost per annum Carbon emissions BIM the cost of sustainability January 2013 Life cycle cost Life cycle cost Capital Replacement Maintenance Operation BIM the cost of sustainability January 2013 Framework “J” curve With a framework the supply chain can afford to invest, gain experience and improve. 20 15 10 5 0 -5 -10 -15 BIM the cost of sustainability January 2013 Cost benefit analysis Capital cost Project 1 Project 2 Project 3 2% 1% 0% (+) £108,000 (+) £54,000 (+) £0 Revenue savings • power consumption • Utility bills • Carbon emissions (-) 120 kW/m²pa (-) £16,000 (-) 105 tCO2 Payback 8,4,0 years BIM the cost of sustainability 70-190 11-27k 75-180t January 2013 Building Information Model BIM the cost of sustainability January 2013 Building Information Models BIM the cost of sustainability January 2013 3D, 4D and 5D A Architecture S Structural ME Mechanical Electrical and Plumbing 4D W +TIME planning and construction simulation 5D Q +COST (Capital, life cycle & FM) 3D BIM the cost of sustainability January 2013 Benefits All information in one file Co-ordinated collaboration Visualisation Clash detection Building performance High level reporting to management Solving problems before site Daylight, heat loss, reverberation Standard component library Create a standard specification Lean construction economies of scale Standard format for data Reuse and transfer of information Client operational data Refurbishment / adaption / space planning BIM the cost of sustainability January 2013 “Family” information Click on “Family” for Information including length, area and volume. BIM the cost of sustainability January 2013 “Family” additional parameters +QS, PM, BS and FM data Capital rates Life cycle cost (anticipated life expectancy) Carbon reduction Capital allowances Programming and phasing Building reinstatement cost Health & safety Client accountancy coding Asset registers Trade package coding Risk management Facility management planning Material scheduling BIM the cost of sustainability January 2013 “Family” design options and level of detail “Level of detail” Alternative> Doors: Timber, metal, glass etc. Boiler: Biomass, Gas, CHP. 1 Concept 2 Schematic 3 Technical BIM the cost of sustainability January 2013 Revit plus Cost, time and carbon Designers Revit file (*.rvt) Object Position Floor X (m) Y (m) Z (m) Truss A:A +2 10.3 5.60 0.003 AHU A:A +1 1.00 1.00 1.00 Door B:B 1:2 0.30 0.30 4.00 QS & PM M&E Structure Architect Revit Program Supply chain Family files (*.RFA) Rate £ Life Years Material Truss 500 70 Steel AHU 1000 15 Copper Door 300 45 Hardwood Application Programming Interface (API) SQL Database BIM the cost of sustainability Object January 2013 RLBIM API “add in” x BIM the cost of sustainability January 2013 RLBIM: import RLB database BIM the cost of sustainability January 2013 Capital cost plan in Revit BIM the cost of sustainability January 2013 RIBA Plan of Works A B Cobie drop 3D Design C D E 1 Structural G H 1 J MEP Operation L 4 QS 4 Information 5 Owner Contractor 3 Building Post completion Construction Construction K 3 2 Operations Mobilisation Pre-construction Tender action Tender documentation Production information F 2 Architecture Construction Design Technical design Design development Concept Preparation Design brief Appraisal RIBA plan of works: COBie drops 5 Exchange COBie BIM the cost of sustainability January 2013 Conclusion Conclusion BIM the cost of sustainability January 2013 Summary Delivering sustainability from start to finish in a cost-effective way A holistic approach to capital and revenue • • • Collaboration Building Information Modelling Life cycle cost planning Benefits: • • • • Economies of scale and standardisation Lower power consumption Lower utility bills (revenue costs) Lower Carbon emissions BIM the cost of sustainability -£ -kW -£pa -CO2 January 2013 Delivering sustainability [email protected] RLB.com BIM the cost of sustainability January 2013