review of green building march 2011

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Page 1: Review of green building march 2011
Page 2: Review of green building march 2011

Green building is just applying common sense.

Green building is the convergence of 5 fundamental objectives Waste management practices Conservation of natural resources Increasing energy efficiency Improving indoor air quality Connectivity to community

Page 3: Review of green building march 2011

Home Size

478 SF/person

average floor area 1,500 SF

3.14 people per household

In 1950

In 1970

1.6 x 1950

In 2000

2.8 x 1950

297 SF/person

average floor area 1,000 SF

3.37 people per household

840 SF/person

average floor area 2,200 SF

2.62 people per household

Page 4: Review of green building march 2011

WASTE GENERATION - millions of tons each year

20% from construction and demolition industry

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10% of construction debris is clean unpainted wood

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RESOURCE USE

Construction of a 2,085 sq ft home uses up to 1.5 acres of forest

95% of old growth forests have been depleted

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Generation and use of energy (electric, gas, oil, coal) are major contributors to air pollution and global climate change.

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INDOOR AIR QUALITY

We spend 90% of our time indoors

Air inside the average home is 10 times more polluted than outside air on the smoggiest days

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locally produced,

minimally-processed,

durable and able to be maintained,

low in embodied energy,

high in recycled-content, and

readily-recyclable.

Page 10: Review of green building march 2011

Fly Ash is a byproduct

of coal burning power plants Use of flyash in concrete diverts it from

landfills.

The U.S. produces 1.3 billion tons of Portland cement annually. This emits 1.3 billion tons of CO2 into the environment.

Attributes: Results in a less permeable concrete More durable Less shrinkage leads to reduced cracking

Page 11: Review of green building march 2011

Concrete and rubble can be crushed and used for backfill and drainage purposes at the base of foundations

Using recycled instead of virgin materials saves money and natural recourses

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Oriented Strand

Board

Gluelams

Laminated

veneer lumber

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FSC certification assures that the forest from which the wood is produced is managed in an environmentally and socially responsible manner

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SIPs are high-performance, load bearing panels that consist of a core of foam insulation with OSB on either side.

They are generally R-4 per inch

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Advanced framing includes

many wood saving techniques: Framing 24” on center

2-stud corners

Stacking trusses over studs

Use single top plates

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Builders’ Guide online at www.RECYCLENOW.ORG Hardware Lumber Plumbing Tile Windows Reclaimed wood

Page 19: Review of green building march 2011

Two types of recycled content decking Plastic lumber

Contains only recycled plastic resins

Check manufacturer for amount of expansion

Composite lumber Made with recycled wood

fiber and recycled plastic resins formed into deck boards

Not for use in structural applications

Page 20: Review of green building march 2011

Fiber-cement siding is composed of: Cement, sand, and cellulose

Textured to look like wood siding or stucco finish

Replaces conventional wood siding or stucco finishes

Page 21: Review of green building march 2011

A green replacement for gypsum drywall,

80% recycled content;

Low VOC emissions (meets CA 01350);

Highly resistant to mold.

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Minimize the amount of fresh water used within buildings and outside for landscaping.

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Non Invasive Species

No Species Require Shearing

Drought-tolerant Natives

Minimal Turf Areas

Plants Grouped by Water Needs (Hydronizing)

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Water Catchment Filter

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Rainwater Harvesting

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Insulate Water Heaters & Pipes

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Locate Water Heater within 12 Feet of All Fixtures

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Toilets Dual-Flush or maximum 1.6 gpm

Showers use max 2.5 gpm

Faucets use max 1.5 gpm

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Energy efficiency is the cornerstone of any green building project.

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Direct Gain: Sunlight shines into and warms the living space.

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Sunroom

Isolated Gain: Sunlight warms another

room (sunroom) and convection brings the

warmed air into the living space.

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Plant deciduous trees for shade

Natural ventilation is a key cooling strategy

Install window overhangs and awnings

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COMPACT FLUORESCENT BULBS

Saves up to $120 over the life of the bulb

Lasts up to 10 years

Use Recessed Lighting with CFLs

Insulation Compatible Air-tight (IC-AT) recessed lighting fixtures are sealed

Page 42: Review of green building march 2011

Ceiling fans improve interior comfort: Can be adjusted to either draw warm air upward

during the summer or push warm air downward during the winter

Best locations are bedrooms and living rooms

Page 43: Review of green building march 2011

Solar attic fans exhaust heat from attic spaces in summer and clear condensation in winter Attics can reach up to 150 degrees F. Heat can migrate into the house

Page 44: Review of green building march 2011

Soffit/eave ventilation and gable/continuous ridge ventilation exhaust excess heat and moisture from attic spaces by natural convection.

Page 45: Review of green building march 2011

Whole house fans cool a house without the use of air conditioning Exhaust warm, indoor air Bring in fresh, cool, outdoor air at night Fan mounted in a hallway ceiling on the top

floor

Page 46: Review of green building march 2011

Energy efficient refrigerators can use up to 30% less energy

Look for Energy Star appliances

Check with local utilities for rebates on Energy Star appliances

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Exceed the Title 24 Standard for your climate by at least 20%

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Avoid damp blown cellulose during wet months The binder reduces the chance of settling. Cellulose is treated to retard insects and fire

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Install expanding foam or caulk to prevent infiltration where wood connections are made or framing is drilled to provide plumbing and electrical runs.

Page 52: Review of green building march 2011

Low- E double-glazed windows

Low-conductivity frames

Look for windows that have a National Fenestration Rating Council

(NFRC) label

Page 53: Review of green building march 2011

U-factor A measure of heat transferred by the entire window

(frame, sash, and glass) either into or out of the building.

Visible Transmittance (VT) Select a window with a high VT.

Solar Heat Gain Coefficient (SHGC) Air Leakage (AL)

Page 54: Review of green building march 2011

PHOTOVOLTAIC PANELS (PV)

SOLAR HOT WATER

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Attached garage is the single most significant contributor to poor indoor air quality (source: U.S. EPA)

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Low/no-VOC products are manufactured without: Mercury or mercury

compounds Pigments of lead, cadmium,

chromium or their oxides

Low/no-VOC paints are readily available

Page 58: Review of green building march 2011

Conventional solvent-based wood finishes can off-gas for months

Low VOC finishes are lower in toxic compounds

Can be used in most applications If solvent-based wood finishes

must be used, they should be left to off-gas for 3 to 4 weeks prior to occupancy

Page 60: Review of green building march 2011

Engineered sheet goods (particleboard, medium density fiberboard (MDF) typically uses adhesives that contain urea formaldehyde

Alternative sheet goods include materials made without formaldehyde

Page 61: Review of green building march 2011

Replaces vinyl flooring Contains petroleum-based

products or chlorinated chemicals such as PVC which off gases VOCs

Lasts only 7-10 years

Manufactured from natural materials like flax seed, jute, and linseed oil

Can last up to 40 years

Page 62: Review of green building march 2011

For slab-on-grade additions or basements

Great for radiant, in-floor heating systems

Durable and easy to clean

Page 63: Review of green building march 2011

Consumer label, tied to independent

field verification

Ratings reflect practices ABOVE

code in CA

Resources for local govt. policies &

incentives

Quantifies environmental benefits

Complementary to LEED for Homes

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Platinum: 52-69 points

Gold: 39-51 points

Silver: 33-38 points

Certified: 26-32 points

Page 65: Review of green building march 2011

LEED Category Prerequisites Possible Points

Sustainable Sites (SS) 1 14

Water Efficiency (WE) 0 5

Energy & Atmosphere (EA) 3 17

Materials & Resources (MR) 1 13

Indoor Environmental Quality (EQ)

2 15

Innovation in Design (ID) 0 5

Total 69

Page 66: Review of green building march 2011

Recognizes that each aspect of building design influences others Envelope affects HVAC sizing

Windows affect lighting loads

Lighting affects cooling loads

Waste heat from one process can be pre-heating for another

© Eraxion | Dreamstime.com

Page 67: Review of green building march 2011

Commit to the integrative design process

Hold a charrette

Have regular meetings

Establish communication protocols

Identify scope of responsibilities and interactions for all parties

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Identify what aspects of green building are important to your client

Talk with your client, subcontractors, and architect about building green

Use the Green Point Rated or LEED Guidelines to develop project

Ask your local supplier to stock green building materials

Get continual training for yourself and your employees

Implement green practices into your business

Page 72: Review of green building march 2011