1 / 23

John Basbagill

Integrating Life Cycle Assessment into Early Stage Building Design. John Basbagill. November 27 , 2012. Agenda. Research Question. 1. Method. 2. Design Problem . 3. Results. 4. Conclusions. 5. 2 of 21. Research Question . 1.

dillan
Download Presentation

John Basbagill

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Integrating Life Cycle Assessment into Early Stage Building Design John Basbagill November 27, 2012

  2. Agenda Research Question 1 Method 2 Design Problem 3 Results 4 Conclusions 5 2of 21

  3. Research Question 1 How can BIM-enabled life cycle environmental impact feedback help designers understand which design choices contribute to a building’s carbon footprint? 3of 21

  4. Scope 1 4of 21

  5. Method 2 Pre-operational CO2e Energy simulation Operational CO2e Life-cycle CO2e 2 3 2 5 • Feedback processor • MDO • Sensitivity analysis • Design space • characterization Building information model 6 1 Pre-operational cost MRR Schedule Operational cost Life-cycle cost 1 4 1,4 5 Research Phases Software Implementation Key 1: Embodied 1 = DProfiler 2 = Athena, SimaPro 3 = eQUEST 4 = CostLab 5 = Excel 6 = ModelCenter 2: Operational 3: Cost 5of 21

  6. Design Problem 3 VARIABLES DESIGN SPACE SIZE 6of 21

  7. 3 Design Problem VARIABLES • Number of buildings: 3 or 4 (2) Orientation: 0-360° (3) Number of stories: 5, 6, 7, or 8 (4) Building footprint: H-shape (5) Window-to-wall ratio (WWR) (6) Materials (7) Building component dimensional sizes 7of 21

  8. 3 Design Problem WWR = 0.15 VARIABLES • Number of buildings: 3 or 4 (2) Orientation: 0-360° (3) Number of stories: 5, 6, 7, or 8 (4) Building footprint: H-shape (5) Window-to-wall ratio (WWR) (6) Materials (7) Building component dimensional sizes 8of 21

  9. 3 Design Problem WWR = 0.50 VARIABLES • Number of buildings: 3 or 4 (2) Orientation: 0-360° (3) Number of stories: 5, 6, 7, or 8 (4) Building footprint: H-shape (5) Window-to-wall ratio (WWR) (6) Materials (7) Building component dimensional sizes 9of 21

  10. 3 Design Problem VARIABLES MATERIALS (# CHOICES) THICKNESSES (2 CHOICES EACH) Cladding (7) Substructure (2) Partitions (5) Flooring surface (8) Floor structure (12) Column and beams (10) Window assembly (5) Wall structure (6) Wall finishes (2) Roof (50) Mechanical system Roof assembly Stairs Doors Cladding Flooring surface Ceiling Wall finishes Substructure Window assembly Mechanical system Electrical system Plumbing system • Number of buildings: 3 or 4 (2) Orientation (3) Number of stories: 5, 6, 7, or 8 (4) Building footprint: H-shape (5) Window-to-wall ratio (WWR) (6) Materials (7) Building component dimensional sizes Basbagill J, Flager F, Lepech M, Fischer M. Application of life cycle assessment to early stage building design for reduced embodied environmental impacts. Building and Environment 2012 (in publication). 10 of 21

  11. 3 Design space characterization Pre-operational CO2e Energy simulation Operational CO2e Life-cycle CO2e 2 3 2 5 • Feedback processor • MDO • Sensitivity analysis • Design space • characterization Building information model 6 1 Pre-operational cost MRR Schedule Operational cost Life-cycle cost 1 4 1,4 5 NUMBER OF RUNS SAMPLING ALGORITHM DESIGN SPACE SIZE DECISION SEQUENCES 11 of 21

  12. 4 Results CURRENT DECISION KEY Orientation = 323 to 356° Total Impact Orientation = 323 to 356° DECISIONS REMAINING Impact Distributions Number of buildings Number of floors Orientation WWR Shape Materials Size 18 16 14 12 SUB-DECISIONS Probability (%) n/a 10 POSSIBLE VALUES 0-360° 8 DECISIONS MADE 6 1. Orientation = 323 to 356° 4 2 150,000 200,000 260,000 Impact (kg CO2e) 12 of 21

  13. 4 Results CURRENT DECISION KEY Cladding material = steel Total Impact Cladding material = steel DECISIONS REMAINING Impact Distributions Number of buildings Number of floors Orientation WWR Shape Materials Size Cladding material = vinyl 18 16 14 12 SUB-DECISIONS Probability (%) cladding substructure partitions floor surface floor structure columns & beams windows walls structure wall finishes roof 10 8 POSSIBLE VALUES 6 steel, vinyl, stucco, brick, wood, limestone, concrete 4 DECISIONS MADE 1. Cladding material = steel 2 150,000 200,000 260,000 Impact (kg CO2e) 13 of 21

  14. 4 Results CURRENT DECISION KEY Number of floors = 6 Total Impact Number of floors = 5 DECISIONS REMAINING Impact Distributions Number of buildings Number of floors Orientation WWR Shape Materials Size Number of floors = 6 18 Number of floors = 7 16 Number of floors = 8 14 12 SUB-DECISIONS Probability (%) n/a 10 POSSIBLE VALUES 5, 6, 7, 8 8 DECISIONS MADE 1. Number of floors = 6 6 4 2 150,000 200,000 260,000 Impact (kg CO2e) 14 of 21

  15. 4 Results CURRENT DECISION KEY Number of floors = 6 Total Impact Number of floors = 6 DECISIONS REMAINING Impact Distributions Number of buildings Number of floors Orientation WWR Shape Materials Size 18 16 14 12 SUB-DECISIONS Probability (%) n/a 10 POSSIBLE VALUES 5, 6, 7, 8 8 DECISIONS MADE 1. Number of floors = 6 6 4 2 150,000 200,000 260,000 Impact (kg CO2e) 15 of 21

  16. 4 Results CURRENT DECISION KEY Orientation = 323 to 346° Total Impact Number of floors = 6 DECISIONS REMAINING Impact Distributions Number of buildings Number of floors Orientation WWR Shape Materials Size Orientation = 323 to 346° 18 16 14 12 SUB-DECISIONS Probability (%) n/a 10 POSSIBLE VALUES 0-360° 8 DECISIONS MADE 1. Number of floors = 6 6 2. Orientation = 323 to 346° 4 2 150,000 200,000 260,000 Impact (kg CO2e) 16 of 21

  17. 4 Results CURRENT DECISION KEY Cladding material = steel Total Impact Impact Distributions Number of floors = 6 DECISIONS REMAINING Number of buildings Number of floors Orientation WWR Shape Materials Size Orientation = 323 to 346° 18 Cladding material = steel 16 14 12 SUB-DECISIONS Probability (%) cladding substructure partitions floor surface floor structure columns & beams windows walls structure wall finishes roof 10 8 POSSIBLE VALUES 6 steel, vinyl, stucco, brick, wood, limestone, concrete DECISIONS MADE 4 1. Number of floors = 6 2. Orientation = 323 to 346° 2 3. Cladding material = steel 150,000 200,000 260,000 Impact (kg CO2e) 17 of 21

  18. 4 Results Impact Distributions 18 16 14 12 Probability (%) 10 8 6 4 2 150,000 200,000 260,000 Impact (kg CO2e) 18 of 21

  19. 5 Conclusions Developed BIM-enabled life cycle environmental impact feedback method Accounted for embodied and operational impacts Parametrically control many design inputs Designers visually understand effect of design choices: building components positive or negative materials influential versus non-influential dimensional thicknesses 19of 21

  20. 5 Future Work Model does not account for: coupled inter-life-cycle-phase design decisions solar heat gain coefficient (glazing) shading (fins, overhangs) insulation cladding material cladding thickness roof thickness wall structure thickness coupled variables glazing material + glazing thickness Insulation material + insulation thickness cladding material + cladding thickness 20 of 21

  21. Future Work 5 A: Substructure B: Shell C: InteriorsD: Services columns and beams partitions Impact Reduced/$ doors mechanical piles wall finishes mat foundation flooring electrical roof footing ceiling floors conveying cladding fire plumbing 10 20 30 40 50 15 % Reduction 21of 21

  22. Questions?

More Related