Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Victor O. Schinnerer Research Presentation

Navigating Sustainability
by

Gretchen Heberling

on 13 August 2013

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Victor O. Schinnerer Research Presentation

Navigating Sustainability
Going Green
Green Building Trends
Risks Unique to Sustainable Buildings
Benefits & Drawbacks of Several Popular Choices
Gretchen Heberling, Milton F. Lunch Graduate Fellow, 2013
What it means in 2013
(as of August 2013)
Green Building Rating Systems, Standards, & Codes
Contracts
Managing Liability & Risk
Best Practices for Design Professionals on Green Projects
Projects that incorporate design and construction practices that are intended to offer benefits to the environment, enhance the health and wellbeing of building occupants, or increase energy efficiency
Buildings with reduced energy, water, material, and fossil fuel use, improved environmental quality (IEQ) for occupants, improved worker productivity and lower life-cycle costs when compared to baselines for building performance
Do sustainable buildings cost more?
Average increase in first cost is 3%
Average decrease in operating costs is 9%
Need to consider the life-cycle cost
First cost = 5-10%
O&M = 60-80%
Are green technologies, materials, and systems complicated and expensive?
Many design strategies cost nothing
Passive solar
Recycled materials lower the embodied energy of the project
Green certified materials are usually no more expensive
Green options are offered at many price points
Need for context: what is the payback period?
Do green buildings actually perform better?
2008: New Buildings Institute: 25-30% lower energy use
2011: GSA: 25% lower energy use, 19% lower operational costs, 36% reduction of CO2 emissions, and 27% higher occupant satisfaction
2013: National Academy of Sciences: 5-30% lower energy use, 8-11% lower water use
Is there demand for sustainable buildings?
63% of planned new construction is green, up from 48% in 2008
30% of commercial, industrial, and institutional organizations are willing to pay a premium for green buildings
Millennials are more environmentally conscious, and see value in green living and working spaces
Do green buildings actually command higher rents and higher sale prices?
To achieve higher rent and sale prices, green certification is highly recommended
Of the studies referenced in the paper:
Average rent increase: 6.5%
Average sale increase: 13.4%
The real estate valuation industry is still catching on...
But...every building is different.
Again, every building is different.
Commitment to sustainable practices
Executives say...
56% are extremely or very committed to sustainable practices & operations
81% are extremely or very likely to invest in energy efficiency improvements
64% have carbon reduction goals
73% have energy use reduction goals
73% intend to achieve net zero status for a new facility
AEC firms say...
40% report that more than 60% of their work in 2012 was on green projects
Economic, social, & environmental reasons for going green
"it's the right thing to do"
impact on brand and reputation
cost savings from reduced operating costs, energy use, and water use
client and market demand
Pursuance of green building certification
One study reports 91% of firms use LEED, the other reports fewer companies seeking LEED certification than in 2008
Some are considering other rating systems and some use their company's own green building standards
Perceived benefits:
create the ability to create a better performing building
marketing opportunities and competitive advantage
encourage the use of integrated design
governmental financial incentives
Costs:
too costly and time intensive
rating systems are not tailored to their regional climate
health and productivity benefits
improved IAQ
protection of natural resources
lowered greenhouse gas emissions
governmental financial incentives
internal corporate commitment
Perceived benefits of green buildings
increased building value
higher occupancy rates
lower life cycle costs
better indoor air quality
increased health & well-being of occupants
higher rents and sale prices
increased tenant productivity
future proofing assets
certification provides quality assurance
Challenges to increased green building activity
length of payback periods
difficulty quantifying benefits of sustainability
construction costs
justification of expending capital on sustainable measures
Impact of financial incentives
Only 49% of US firms take full advantage of them
Many owners report being unaware of tax breaks and other governmental assistance
Efficiency & renewable energy
Most popular green strategies:
advanced lighting and HVAC systems
therman & moisture protection
waste management
green flooring, finishes, and furnishings
high performance windows
high insulation levels in walls and roofs
cool roof solutions
operable windows
light shelves and skylights
individual thermostat controls
Renewable energy:
67% use solar power
27% use geothermal
projected to increase to 44% by 2017
14% use wind
projected to increase to 42% by 2017
Evaluation of green products
33% of firms use third party certifications for green products
Firms also use these metrics to evaluate them:
highly energy efficient
proven industry performance data
nontoxic
made of recycled materials or have recycled content
proven life cycle data
durable
Energy data collection & analysis
AEC firms:
52% of firms use metrics to track lower operating costs
37% of firms are not using any metrics
Owners & developers:
54% measure and record at least weekly
45% analyze energy data monthly
Prescriptive
Performance-based
Outcome-based
Examples: New Building Institute's Core Performance Protocol
Pros:
simple
require little analysis
no need for modeling
Cons:
doesn't encourage a whole building approach
may lead to missed opportunities for energy efficiency
Examples: LEED, Energy Star, Green Globes, ICC 700, bEQ
Pros:
flexible
allow for design innovation
encourage use of new design strategies, components, and technologies
Cons:
often require modeling
can be expensive
can require extensive staff expertise
time commitment for documentation
may award certification before building is occupied (LEED)
Examples: Living Building Challenge and BOMA 360
Pros:
confer certification post-occupancy
flexible
Cons:
require significant testing and commissioning of systems
can be expensive
require more effort
Red List and Net Zero Energy & Water
Codes & Standards
ASHRAE 90.1
Appendix G, Building Performance Rating Method
ASHRAE 189.1, Standard for the Design of High-Performance, Green Buildings
International Green Construction Code
Trends in Rating System & Code Adoption
Governmental and jurisdictional adoption of green codes, LEED, and Green Globes trickles down
Resistance from home builders, commercial builders, and jurisdictions due to stringent energy requirements
Large amount of non-compliance
Roll back R values, ACH, and more
Energy performance vs. Building Energy Modeling
Models require simplification of building
Energy models are approximations
Projections can deviate by as much as 25% from the actual building's performance
Owner expectations may be unrealistic
May expect modeling to prevent delays and change orders
May only consider enhanced performance, not the possibility of shortcomings
Moisture Issues
Green strategies and credits for achieving green certification may encourage the intrusion of moisture into the building envelope
Untested, new materials may interact with other building components
Use of recycled building materials
Vegetated, "green" roofs
Excessive natural ventilation
Increased ACH
Flush-outs
Higher insulation values in building envelope
Innovative Products, Materials, & Strategies
Novel materials or new construction techniques may give rise to liability due to:
contractor inexperience with installation
lack of long-term evaluation of green materials
lack of understanding of how new materials may impact existing systems
warranties unintentionally provided about the durability or effectiveness of unproven materials or techniques
Untested green products may give rise to delays or unexpected expenses
Recycling greywater
Renewable energy generation & storage
Green Certification
Guarantees of certification are misguided and dangerous
Delay between registration and certification
Discrepancies between lower operating costs and the level of green certification
General population still does not completely understand green building rating systems
Missed Financial Opportunities
Governmental tax incentives
Documentation or submission requirements may be neglected
Tax break may not be awarded
Sustainable Standard of Care
Standard of care is based on the historical performance of others in the same field as the professional
Sustainability poses problems because products and processes may have no historical application
Nothing to compare against
Professional accreditation imposes a perceived higher standard of care
Design professional must take care to:
make no guarantees or warantees
define scope
define their standard of care
Educate & Manage Expectations
Keep the owner informed
Design workshops ("charrettes")
Ensure they understand that electing to design a green building and/or achieve certification may have impacts
uncertainty
schedule delays
actual performance may not meet expectations
product substitutions
increased participation in and collaboration of the project team
increased operations & maintenance
Importance of Written Records
Record all research conducted
Be clear and concise about sustainability goals
Define terms & timelines
Keep track of documentation requirements
Assign liability according to responsibilities
Discuss & document waivers for rights to consequential or liquidated damages
Define length & scope of obligations
Manage the use of innovative products by:
Verify that the client understands the risk
Obtain the client's approval
Do one's duty, but no more than necessary
Contract Documents
AIA D503-2013, Guide for Sustainable Projects
ConsensusDOCS 310 Green Building Addendum
Successful Project
Integrated Project Delivery
Constant Communication
Cautious Modeling
Smart Use of Innovative Products & Processes
Sensible Pursuance of Certification
Understanding of Tax Incentives & Governmental Regulations
Any questions?
Need clarification of 'green' terms?
Want more data from my sources?
Full transcript