Dealing with design, cost, and construction of high ... · Heat Recovery Radiant floor – Reduced...

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Transcript of Dealing with design, cost, and construction of high ... · Heat Recovery Radiant floor – Reduced...

Page 1: Dealing with design, cost, and construction of high ... · Heat Recovery Radiant floor – Reduced HP for pumps in lieu of fans Larger diameter duct – Lower pressure – reduced

Dealing with design,cost, and construction

of high performancecampus buildings

Page 2: Dealing with design, cost, and construction of high ... · Heat Recovery Radiant floor – Reduced HP for pumps in lieu of fans Larger diameter duct – Lower pressure – reduced

Dealing with design,cost, and construction

of high performancecampus buildings

Christopher Gorthy• Preconstruction, Green Guru• Project Engineer• LEED Accredited Professional• Board Member of the Virginia Sustainable Building Network

(VSBN)– Bachelor of Professional Studies in Architecture

• State University of New York at Buffalo– 8 Years of Construction Experience

• Labs, Education, Sports, Green Buildings• Boston University, Johns Hopkins, Penn State, Maryland,

UMBC, UVA, VT• Varying Sizes from $150,000 to $300 Million

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Dealing with design,cost, and construction

of high performancecampus buildings

Overview

Market TransformationHigh Performance/Green Project SetupCosts of “Green”Questions

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Dealing with design,cost, and construction

of high performancecampus buildings

Green in the news!

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Dealing with design,cost, and construction

of high performancecampus buildings

Green is Main Stream and a Tremendous Business Opportunity

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Dealing with design,cost, and construction

of high performancecampus buildings

Market TransformationAvailable products are growingEducation is increasing– Design and Engineering– CM’s and GC’s

TechnologyLegislation and/or campus initiatives– American College and University Presidents

Climate Commitment, 420 Signatories

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Dealing with design,cost, and construction

of high performancecampus buildings

High Performance/Green Project Setup

Early team selection– more collaborative– less adverse relationship

Team understanding of university and college goals– reduces poor VE decisions

and pricing

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Dealing with design,cost, and construction

of high performancecampus buildings

CollaborationOpen minded, outside the box thinking Eliminate pre-conceptions, challenge local codes, and engineering rules of thumb.Green Building Breakthrough:

Engineering A Sustainable WorldInterface Engineering, Inc.'s 48-page illustrated

guide reveals engineering secrets of Oregon Health & Science University’s River Campus Project

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Dealing with design,cost, and construction

of high performancecampus buildings

Extreme ExampleCarnegie Institution of Washington at Stanford, Global Ecology Center

Architect: EHDD

Volume: $4.2M

Sq. Ft.: 14,400

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Dealing with design,cost, and construction

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Sustainable StrategiesSunshades and Light shelvesDay lighting and Lighting ControlsSpectrally-Selective Glazing and Roofing

Natural VentilationCool TowerRadiant Heating + CoolingNight Sky Radiant Cooling

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Dealing with design,cost, and construction

of high performancecampus buildings

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Cool TowerWind catcher directs cool air downwardsAtomizing spray nozzles through evaporation cool the air and create thermal downdraft

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Dealing with design,cost, and construction

of high performancecampus buildings

Cooling“Night Sky” roof spray systemNo air-conditioning compressors requiredChilled water supplied at 55-600F using only .04 kW/tonUses ½ as much water as conventional water cooled chiller20 ton air cooled chiller for back-up on hottest days

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Dealing with design,cost, and construction

of high performancecampus buildings

Heat RecoveryRadiant floor– Reduced HP for pumps in lieu of fans

Larger diameter duct– Lower pressure – reduced HP for fans

Room exhaust (not fume exhaust)Heat pipe heat exchanger to preheat or pre-cool outside airNight time setback: Reduce boiler size

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Dealing with design,cost, and construction

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Thermal Comfort

Radiant cooling works with natural ventilationRadiant cooling affects surfaces– Broader range of air

temperature to be comfortable

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Carnegie ResultsTypical Lab Lighting and HVAC Electricity

179,000 kW-hr / yr

Global Ecology Lab Lighting and HVAC Electricity

78,000 kW-hr / yr

57% Energy Reduction

AREA LIGHTS

SPACE COOL

PUMPS & MISC

VENT FANS

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Design DocumentsVarying levels of education– Division 1– Bullet proof specs and drawings– Documentation requirements

• If required– Clarity = Reduced risk of inflated

costs

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Dealing with design,cost, and construction

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Spec RequirementsRemember the subcontractors are just as important as the design team and contractor. Require some type of onsite orientation plan in your documentation.

Glazer

Electrician

Roofer

Demo

Painter

Flooring

Civil/Utility

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Dealing with design,cost, and construction

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PitfallsSpecifying single source products– Sometimes necessary– Are their other alternatives? – Communication is key with contractor and university– Example: FSC certified, urea-formaldehyde free wood

doors. One or two manufacturers.Long lead materials– Limits flexibility, limits pricing– Substantial benefits

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Dealing with design,cost, and construction

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MR LEED Credit Strategies

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Dealing with design,cost, and construction

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EQ LEED Credit Strategies

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Dealing with design,cost, and construction

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Costs of GreenSo if it’s main stream…If it’s everywhere….And the market is expanding…

What are the costs and why does everyone say it costs too much……?

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Dealing with design,cost, and construction

of high performancecampus buildings

Costs of GreenConcerns w/ Benchmarking

– Not Enough Data

– Public vs. Private, Costs of construction are often confidential.

– Location and conditions of the existing site.

– Team expertise and education

– Owner/University goals

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Dealing with design,cost, and construction

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However

Blue Lines = Non LEED projects

Green Lines = LEED projects

Taken From:Costing Green: Davis Langdon

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Cost & Performance

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of high performancecampus buildings

Cost Studies

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Case Study - DPR/ABD Office Building, Sac. CAArchitectLPA Sacramento, Inc.

Project Value$6.2M52,000 SF

Project Duration9.8 Months

LEED Certification:New Construction – LEED

Silver (38 Points)Commercial Interiors –

LEED Gold(35Points)

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DPR/ABD Project Cash Flow Analysis: LEED Certified, Silver, Gold, Platinum Rating Levels

$359,758

-$2,200,000

-$1,700,000

-$1,200,000

-$700,000

-$200,000

$300,000

$800,000

$1,300,000

$1,800,000

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Years

Cas

h Fl

ow P

ositi

on

$ D

olla

rs

CERTIFIED SILVER

GOLD PLATINUM

Silver Cash Flow Position Year 10

ROI LEED NC Silver Premium First Cost(Direct and Indirect)= $85,11210-Year Life Cycle Savings = $85,112+$359,758 = $444,870

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Case Study - NSTA, Arlington, VA

ArchitectDavis Carter Scott

Projected Value$17M100,000 SF

Projected Duration18 Months

Targeted LEED Certification:Core and Shell – LEED Gold

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ROI - NSTA

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ConclusionUniversities and colleges can drive change in design and constructionIn the midst of market changeCollaborative approachAccurate and reduced costs becoming availableIncreased benefits

FUTURE Developments – (3D) Modeling - BIM

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Dealing with design,cost, and construction

of high performancecampus buildings

Questions