ZERONET: Shops at Oak Creek

Group Members and Areas of FocusZach Sawyer – Overall Project GoalsJeremy Taylor – EnergyMarnie Melendez – Outdoor Water

ConservationRenee Ayala – Indoor Water ConservationAndrew Flores – Indoor Environmental

QualityMika Yagi – Green Materials

Shops at Oak Creek

Project Goals

ZERO NET Building

Reduction in Energy Use

Production of Clean Energy

Integrated Use of Southern California’s

Climate

Create as much Green Space as Possible

Prevent the Contamination of Runoff

Energy

Energy Strategies

• Photovoltaic Panel (PV) & Wind Generators

• Passive Solar, Insulation, & Fenestration

• Solar Hot Water & Tankless Water Heater

• Lighting & Appliances

• Automated Systems: Timers, Dimmers, & Sensors

Photovoltaic Panels (PV) & Wind Generators

Photovoltaic Panel• Abundant source of solar in microclimate• Mostly consistent source during daylight• Proposed parking sun shade structure• 12,500 SF flat roof for 2’ x 4’ Monochrystaline PV Panels

Wind Generators• Less abundant source of wind in microclimate• Inconsistent source of power

Passive Solar, Insulation, & FenestrationPassive Solar• Deciduous Trees to shade in summer & allow heat in during winter• Over-sized Building Eves cantilevered to shade windows in summer when sun is higher & allow heat in during winter

Insulation• Recycled Denim• Air Krete Blown-In Insulation

Fenestration• Energy Efficient Windows• Natural Ventilation• Daylighting

Solar Hot Water & Tankless Water Heater

Solar Hot Water

Backup Tankless Water Heater

Lighting & Appliances

Efficient Lighting

• Compact Fluorescents• High Flux LED’s

Energy Star Appliances

• Dishwashers• Refrigeration Units• Washers• Dryers

Automated Systems: Timers, Dimmers, & Sensors

Automated Systems

• Timers• Dimmers• Occupancy Sensors• Light Sensors

Value Return

Investment• Excess power returned to power grid• Rebates available• Return on investment in roughly (10) years

Outdoor Water Conservation

Climate Appropriate Native Plants

•California Poppy

•Western Redbud

•Ray Hartman California Lilac

•Coast Live Oaks

•Arroyo Willows

Rain Capture

A one inch rain on a 2,000 square foot roof conserves over 1000 gallons of free water. * Maximum Annual Gallons of Rain Capture = Annual Rainfall x Square Footage of Roof x .623 Gallons

Grey Water System

•The client can install a grey water system for onsite landscape water use or connect to the reclaimed water in the purple pipe.

•We would recommend using a Netafim drip irrigation system using .6 gallons per hour (gph) spaced 12” on center

Indoor Water Commercial Conservation Practices

The food service sector uses more than its fair share of potable water, averaging 300,000

gallons a year per restaurant.

Client Needs or Wishes:

● Minimize the amount of water waste● Reduce water costs

Recommendations for Indoor Water Conservation:

1.Low flow fixtures were installed in all wash basins2. High Efficiency Toilets were installed ( HET) in the women’s restrooms

Recommendations Continued:

3. High Efficiency Urinals ( HEU)

4. Flight dishwashers in kitchen

5. Low flow pre-rinse spray valves

6. Adjust ice machine to dispense ice, based on demand

Benefits of Recommendations:

●Low-flow faucets

a. Delivers a constant water flow

b. Uses approximately 1.5 - 2.2 gpm

●High Efficiency toilets

a. Offer high efficiency/low water consumption (1.0 gpf, 3.8 LPF)

Benefits Continued:3. HEU- Flush vol. of 0.5

4. High-Efficiency PRSV

a. 137 gall. Per day ( 189.2 m3)

b. 50,000 gallons / yr

c. 250,000 gallons over the life of

the product

5. Commercial Flight Dishwasher

Flight Type Dishwasher:Medium-Size Food Service

Low Usage 

Annual water savings-

( gal/yr.) -65,000

Lifespan Water savings-

(AF/20yrs.)=3.9

Average savings=25%

High Usage

500,000 ( gal./yr.)

30.5 ( AF/20yrs.)

25%

Areas for Water Conservation:

1. Promptly repair leaks and faucet malfunctions

2. Eliminate thawing frozen food with running water

3. Pre-soak instead of running water

Value Return

● Rebates available for High Efficiency Toilets and HEUs ● Return investment over time● Water savings● Decrease in water bill

Indoor Environmental Quality

IEQ ObjectiveGood IEQ is crucial to the success of a retail

spaceGood IEQ includes good air quality, thermal

comfort, visual comfort, physical comfort, physical comfort and acoustical comfort.

Our aim is to minimize indoor pollutants that acute health problems as well as distractions that cause discomfort.

Our approach incorporates green products, green materials, developing an IAQ construction plan and natural ventilation.

Construction Plan

Natural Ventilation

Psychosocial Value of Space

IEQ ChecklistFacilitate quality IEQ through good design,

construction and operation and maintenance practices

Value aesthetic decisionsProvide thermal comfortSupply adequate levels of ventilation and

outside airPrevent airborne bacteria, mold and other

fungiAvoid the use of materials high in pollutants

Green Materials

Factors When Selecting Materials for a Green Building Application

• Performance

• Service Life

• Cost

• Aesthetics

• Availability/Delivery Schedule

LCALife Cycle Assessment(ISO 14000 Environmental Management Systems)

(4) Main Phases

• Goal & Scope – LCA practitioner formulates and specifies the goal and scope of study in relation to the intended application • Life Cycle Inventory – Involves data collection and modeling of the product system, as well as description and verification of data (i.e. CO2 and intermediate chemical quantities)• Life Cycle Impact Assessment – Evaluating the contribution impact categories (i.e. global warming)• Interpretation – Analysis of the major contributions, sensitivity analysis and uncertainty analysis

CSIConstruction Specification Institute

• Web-based format• Category Summary

- Background Information

- Product Details- Product Lifecycle- Additional

Information- Authorization

Hardie Board Plank

Composition

• Fiber-cement siding – 45% cement, 45% silica sand, and 10% wood fibers

Green Material Component

• Wood is not from endangered species of wood• Cement and sand is in abundance• No toxic materials used in the production• Durable; longer lifetime and less maintenance than wood or vinyl

Colored Concrete

Composition

• Pigment and colors added on site-cast concrete floor slabs

Green Material Component

• Reduce urban heat island effect• Solar Reflectance Index (SRI) that exceeds the LEED requirement• Contributes to better indoor air quality as the need for flooring adhesives is eliminated• Durable; low-maintenance

Pervious ConcretePavements

Construction

• Typically 15-25% voids • Compact the sub-grade to 92-96% of the maximum density • Mixture is composed of cementitious materials, coarse aggregate and water

Green Material Component

• Provides first flush pollution control • Contributes to storm water management• Allows for use of smaller capacity storm sewers • Reduces pollutant loads entering into streams, ponds, and rivers

Exposed Structural Steel Systems

Composition

• Low carbon steel containing manganese

Green Material Component

• 93.3% Recycled steel scrap – “cradle-to-cradle” materials• Conserve raw materials and resources• Reduces travel distances for material transport• Strong, durable and adaptable

Conclusion

Conclusion

Energy

The site has a great opportunity for the use of

Solar

Outdoor Water Conservation

Use of Rainwater and Efficient, but Native

Landscaping

Indoor Water Conservation

The use of low flow fixtures and appliances

Conclusion (continued)

Indoor Environmental Quality

The key is to keep materials protected from

the elements and debris.

Green Materials

It’s important to stress the use of Life Cycle

Cost Analysis

Thank You!

We would like to open the floor to any

questions: