![Case Studies – Office Buildings
39% Compared to
reference
352 kg CO2e / m2
(A1-A5)
Building A – Building Re-Use
49% Compared to
reference
345 kg CO2e / m2
(A1-A5)
Building B – Mass Timber
0% Compared to
reference
921 kg CO2e / m2
(A1-A5)
Building C – New Build
Carbon
breakdown kg
CO2e / m2 (A1-
A5)
Carbon
breakdown kg
CO2e / m2 (A1-
C4)
© Beca 2023
This presentation has been prepared by Beca. It is solely for educational purpose.
Any use or reliance by any person contrary to the above, to which Beca has not
given its prior written consent, is at that person's own risk.
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Beca Priority One Presentation.pdf
- 1. Government Requirements and GreenStar for Buildings Richard Forbes © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk.
- 2. Central Gov. Sustainable Building Drivers Climate Change Response(Zero Carbon Act) Carbon Neutral Government Programme MBIE Building For Climate Change (BfCC) Government Procurement Rules and Guidelines Emissions Reduction/ National Adaptation Plans Government policies and direction relating to Carbon Emissions • Develop targets and commit to national emissions budgets • Develop and implement policies for climate change adaptation and mitigation • Energy targets • Water targets • Embodied carbon targets and reporting • Climate adaptation • Occupant health and wellbeing • Aims to reduce building- related emissions to near zero by 2050. • Reduce embodied and operational carbon • Rules to support sustainable and inclusive procurement through the promotion of good practice planning, supplier procurement and contracting. • Green Star 5 star (Gov. owned) • NABERSNZ certification • Carbon emissions – targets, measuring and reporting. Offsets to achieve neutrality by 2025 © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. 11seca
- 3. 2023 / 2024 • CNGP– all new govt buildings • Green Star Buildings- Upfront carbon - 10% reduction 4&5 star, - 15% 6 star • XRB Reporting mandatory 2025 - 2029 2025 • BfCC carbon reporting required • Energy performance ratings • CNGP carbon neutral 2026 – 2029 • BfCC carbon caps introduced • Green Star – carbon targets lowered 2030 • BfCC final carbon caps for operational and embodied emissions 2050 • All new buildings are net zero carbon Governing Carbon Landscape in NZ Imminent Impending In view In view © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. 11seca
- 4. Sustainability Tools: NewZealand context © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. - ------------------ gn e star •gee star PER:IFOI RMANCI E homestar Q1 EECA ~BUSINESS PROGRAMME PARTNER TM ------------------------ CARBON CERTIFICATION PASSIVEHOUSEINSTITUTE NEW ZEALAND ..p LIVING BUILDING CHALLENGE'~ 11seca
- 5. Oct 2022 v1.0 retired April2022 v1.1 launch GS Buildings consultation GS Buildings final review GS Buildings launch v1.1 retired Green Star Landscape © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. •greenstar GREEN STAR ENVIRONMENTAL IMPACT CATEGORIES Management Indoor Environment Quality Energy Transport Water Materials land use and ecology Emissions Innovation ~2_ 2 _ 022 ~ ) ~2_2 _ 023 ~>~2_ 2 _ 024 ~> ~2_2 _ 02s ~ ) • • • • • • Responsible Recognises activities that ensure the building is designed, procured, built and handed over in a responsible manner. Healthy Promotes actions and solutions that improve the physical and mental health of occupants. Resilient Encourages solutions that address the capacity of the building to bounce back from short-term shocks and long-term stresses Positive Encourages a positive contribution to key environmental issues of carbon, water and the impact of materials. Places Supports the creation of safe, enjoyable, integrated and comfortable places. People Encourages solutions that address the social health of the community. Nature Encourages active connections between people and nature and rewards creating biodiverse green spaces in cities. Leadership Recognises projects that set a strategic direction, build a vision for industry or enhance the industry's capacity to innovate. 11seca
- 6. Current Gov. policydirectly impacting office tenancies since 2021; • NABERSNZ 5 Star Base Building (New build) • NABERSNZ 4 Star Base Building (Existing build) NABERSNZ – energy efficiency rating of office buildings © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. ,------ ' ,------ ( ( ' 1 STAR 2 STARS 3 STARS 4 STARS 5 STARS 6 STARS Poor Below Average Average , Good Excellent Mark t Leading ______ .; , ______.; 11seca
- 7. Process Understand what’s importantto clients and to us Choose the correct framework that addresses your values and needs Report on performance of sustainability measures implemented Technical Engage with relevant stakeholders to consider their specific needs Deliver a sustainable building that measures against success criteria Energy / Carbon / Water (passive design, energy metering and monitoring, embodied carbon, low GWP, potable water, rainwater harvesting,) Resilience (highlight risks from model climate scenarios, transport, materials) Occupant Comfort (Air Quality, lighting, noise, thermal) Green Star 6 *: 90 Devonport Road © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. 11seca
- 8. Implementing Carbon ReductionInitiatives Through Design Kishan Seger © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk.
- 9. What is carbonin buildings? Refrigerant leakages “Life cycle carbon” is the carbon emissions from all stages of the building life. These stages are split into building life cycle “modules” (official term defined in EN 15978 and EN 15804). Assessment scope / boundaries can vary and make a significant difference to the results - % improvements, levers for change. © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. C3 Waste processing for reuse, recovery, or recycling C2 Transport to disposal faclllty B5 Refurbishment B4 Replacement - Reuse Recovery Recycling Potential Al Raw material extraction and A2 Transport to manufacturing plant supply Building Life Cycle, Cradle to Cradle, including benefits and loads beyond the system boundary A3 Manufacturing and fabrication A4 Transport to project site AS Construction and installation process 11seca
- 10. What is carbonin buildings? (Source: MBIE, 2021) The approximate proportion of those emissions over time is shown in the graph below, split between “Operational” and “Embodied” carbon. Life Cycle Carbon Operational Embodied “Embodied” carbon emissions are from the production, maintenance, replacement and disposal of materials and products. “Operational” carbon emissions are those emissions from using the building, e.g. heating, lighting, cooling. © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. - I!' N 0 V Cl ~ Ill C 0 ·;;; Ill ·e GI C 0 .a ..Ill V 0 ◄ Largely from foundations, structure and envelope {FSE) 10 20 Replacement & Maintenance Operational 30 Use stage {years) Building life cycle 40 ■ ■ • Operational carbon • Embodied carbon so 60 ► 11seca
- 11. Embodied Emissions (Office) Structures Cladding Architecturalfit-out Services Operational Emissions (Office) Lighting Heating Cooling Ventilation Plug ins Water heating Other Where is carbon in buildings? © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 11seca
- 12. Carbon reduction throughdesign © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. ► CJ LIi ti: a: I- (/) z 0 ~ (/) z 0 al a: <( (J w Q (/) (I) LIi 0 0 IX Q, 0 z ~ a: 0 Q, UI a: PRE- CONCEPT Build Less 10,ooom• - Reduced oor areas - Reduced facade - Simplified layouts - T imber enabled - Establish Carbon Brief - Set embodied and operationa carbon argets - Establish carbon chalenge - Run carbon innova,ion workshops - Energy Analysis - Carbon Analysis - Carbon Brier - Carbon -arg ets Comparative LCA for options - Carbon performance - CarboNZero Rating Gap Assessment CONCEPT Build Clever 1100 kgC02fm• T imber structure Passive design High performance facade Establish carbo'J opps register Prioritise carbon focus areas and trade-offs across whole or life T imber structure options assessment Faca e ana lysis Concept level LCA Low carbon .systems brief and opps assessment arrative on "lowest carbon" option and decision making process for CE approval PRELIM/DEVELOPED Bu ild Efficiently e 800 'kgC02/m' l DETAILED/ CONSTRUCTION Waste Less l - "-==--==1iiiliK... OPERATION Use Well l 0 GOO l<gCO• /m' i::::::=======iioo:q!~qz /ml Low energ,y HVAC systems Heat pump heating - Prefabr cation Elec r1c steam generation - Modular design Onsite Renewables - Waste recycling Assess rurther opportumties - HVAC system assessment - Refrigerants Energy analysis - Renewables studies - Prelim and Developed Design LCA report On.site renewables assessments - Offset pathways - Procurement/ Supply Cham assessments - Construction methodology - Building Consent LCA - As built LCA - Waste reporting - Design Lessons Learnt - Construction Lessons Learnt - Building opt1m1sat1on and tuning, - Behavioural carbon (EV charg ng, bike storage, WFH) - Esta lish buildmg analytics platform - Quarterly reviews ol performance and tuning outcomes - Annual s mmaries of performance and opportunities for improvements - Bui lding performance dashboaro - Tuning report - Occupant satisfaction su rvey - Asset sHategy DEMOLITION/REBIRTH Use Again l :350 kgC0 2/m' - Flexibility - Durability - Demountabil ty - Adaptive Re-Use - Building lifo expectancy assessmen· - De-constructability assessment - Prod uct circularity assessment Se1sm1c Assessment - Low Damage Design - Re-Use strategy 11seca
- 13. Sustainable Design Principles Designfor Value for Money Design for safety and security Design for local history Design for Future Expansion Design for local supply chain Design for accessibility Design for clean water Design for water reduction Design for Modular Design for Prefab Design for Timber Structure Designing for Green Spaces Design for Resource Efficiency Design for Environmental Systems Design for People Design for health and safety Design for reconciliation Design for circularity Design for natural systems Design for future digital IoT Design for low carbon Design for user experience Design for self-service Design for iwi integration Design for education Design for user satisfaction Design for community Design for wellbeing Design for public transport Design for access Design for solar Design for community engagement Sustainable Design Principles Design for Low Carbon Design for People Design for Kaitiakitanga Design for Simplicity Design for Cost Effectiveness Carbon reduction through design © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. 11seca
- 14. Carbon reduction throughdesign © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. Lowest Carbon Option Exceeds Budget & Programme Lowest Carbon Carbon Middle Ground Considered Carbon Meets Programme lilBeca
- 15. • Electrify fleetsby allowing for new electrical charging points • Permeable footpaths and reuse of recycled aggregate for basecourse • Reduce heating and cooling demand by adopting a fabric first approach (maximise performance of materials used in building fabric) • VRF mechanical ventilation and low carbon refrigerants • Solar shading devices to reduce glare and solar gains • Naturally ventilate spaces where available • Rainwater harvesting where practical/feasible • Low embodied carbon materials. • Use of Engineered Timber • Use of Low Strength (25 MPa) Concrete for the Foundations • Setting and Embodied Carbon Limit for the Supply of Concrete Project Carbon Reduction Initiatives Example reduction initiatives © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. 11seca
- 16. Carbon Emissions -Concrete Concrete composition Water Cement Sand Aggregate Cement Aggregate Steel Steel Concrete emissions - Reduce strength - SCM replacement - Produce with fewer emissions - Specify low- GWP - Use post- tensioned slab - Use fibre reinforcement - D&B slab designers - Specify low- GWP Max = 374 Min = 221 © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. 11seca
- 17. Carbon Emissions –Floor Finishes 0 1 2 3 4 5 6 7 8 9 10 Carpet - NZ Vinyl Linoleum Sealed concrete Kg CO2e / m2 A1-A3 per m2 © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. - ■ 11seca
- 18. Carbon Emissions –Envelope 0 50 100 150 200 250 Steel LR on steel framing (uninsulated, unlined) Steel LR on timber framed (insulated and lined) Precast wall 150 thk Steel facing on CLT Aluminium framed curtain wall Timber cladding on timber framing (insulated/lined) Kg CO2e / m2 A1-A3 per m2 © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. ■ 11seca
- 19. Case Studies –Office Buildings 39% Compared to reference 352 kg CO2e / m2 (A1-A5) Building A – Building Re-Use 49% Compared to reference 345 kg CO2e / m2 (A1-A5) Building B – Mass Timber 0% Compared to reference 921 kg CO2e / m2 (A1-A5) Building C – New Build Carbon breakdown kg CO2e / m2 (A1- A5) Carbon breakdown kg CO2e / m2 (A1- C4) © Beca 2023 This presentation has been prepared by Beca. It is solely for educational purpose. Any use or reliance by any person contrary to the above, to which Beca has not given its prior written consent, is at that person's own risk. - • ■ I - I - - - ■ ■ I • • '+- > V) ro (]J <U ...., V) V) 0 a. i2 ~ V) (]J C: ""O 0 ~ ~ C: ~ <o t t <U 0 ..c: E 0::: u <U ~ 4' "' ~ ·.;::; -~ :::J 0) .s C: ~ ~ t ~ <if & 1-....0 C: <U 0 11seca ~ ! ~ <U 0 C: C: ·.;::; ,.f -0 !::' ~ ""O -+= V) r§ ~ f f -~ <U u 0 (]J Q) u ""tr; - ~ C: C: ""O u 2 ~ ~ f (i '-- :::J ~ .D ...., ' 0/l/ - ~ C: -~ X ~ t f (]J 0 <U ...., ~ .,s ~ ...., <U UJ V) J X LL. :::J vi (]J C: ~ ~ Cj -s ...., ,§ 'li tf UJ u Vl 0 ,,g; § -::5 & .f qJ § 0 2 u 0' ~ (.j ...., ...., ~ i.L l/1 0 0