4/28/2008 Plaza East Chantilly, Virginia Project Overview Presentation Topics Analysis 1: Building Envelope Analysis 2: Green Building Envelope Roof Implementation Investigation Green Roof Green Roof Plaza East Plaza East Analysis 3: Im plem entation Checking Green Roof Loads Chantilly , Virginia New Roof Loads Analysis Research: Implementation of Research Topic: Steel Software for Steel Buildings Erection Software Steven M. Miller Senior Thesis 2008 Q & A Construction Management Steve Miller Construction Management Plaza East Plaza East Chantilly, Virginia Chantilly, Virginia Project Overview Project Overview Goals Proj ect Overview Analysis 1: Building Analysis 1: Building Envelope Envelope 1. Save tim e and m oney with new Basic Project Inform ation: building façade m aterial • 5 stories above grade Analysis 2: Green Analysis 2: Green Roof Roof • 123,000 sqf per building 2. Use m oney saved to install a Implementation Implementation • Design ‐ Bid ‐ Build green roof • Function ‐ General Office Building • Duration ‐ March 2006 to August 2007 • Duration March 2006 to August 2007 3 3. Save energy and m oney with Save energy and m oney with Analysis 3: Analysis 3: new building façade m aterial • Cost ‐ $28 to $29.5 million Checking Green Checking Green Roof Loads and green roof Roof Loads • Total Project Cost $ 54 million Project Team : 4. Inform others of the perks in • Owner - Tishman Speyer Properties the paperless process of steel Research: Research: Implementation of Implementation of • Architect - Hellmuth, Obata + Kassabaum, P.C. buildings Software for Steel Software for Steel • Mechanical Contractor - GHT Limited Buildings Buildings • Structural Contractor - Smislova, Kehnemui & Associates, P.C. • General Contractor: James G. DAVIS Construction Q & A Q & A • Civil Engineer - VIKA, Inc. Steve Miller Steve Miller Construction Management Construction Management 1
4/28/2008 Plaza East Plaza East Chantilly, Virginia Chantilly, Virginia Project Overview Project Overview Proj ect Overview Building Envelope Analysis 1: Building Analysis 1: Building Envelope Envelope CENTRIA Form awall Dim ension Series with Duracast Coating Analysis 2: Green Analysis 2: Green And CENTRIA Versawall with Duracst Coating Roof Roof vs Implementation Implementation Architectural Precast Concrete Analysis 3: Analysis 3: Checking Green Checking Green Roof Loads Roof Loads Research: Research: Implementation of Implementation of Software for Steel Software for Steel Buildings Buildings Q & A Q & A Steve Miller Steve Miller Construction Management Construction Management Plaza East Plaza East Chantilly, Virginia Chantilly, Virginia Project Overview Project Overview Building Envelope Building Envelope Analysis 1: Building Analysis 1: Building Envelope Envelope CENTRIA Form awall and Versawall Architectural Precast LEED Points Analysis 2: Green Analysis 2: Green Roof Pros Roof • Pros Up to 10 for optim izing energy perform ance Implementation Implementation Reduces structural requirements Highly Durable • 2 for recycling content Good Acoustics Reduces installation costs Shortens material lead time Molds can be easily replicated o ds ca be eas y ep cated • 2 for low em itting m aterials 2 for low-em itting m aterials Analysis 3: Analysis 3: Usually Cheap Faster Installation Checking Green Checking Green Higher R-Value ▫ Roof Loads Roof Loads Adhesives and Sealants LEED Points Cons ▫ Paints and Coatings Degradation from acid rain and alkali runoff etches glass and Research: Cons Research: Implementation of Implementation of deteriorates metals Plain looking compared to the Software for Steel Software for Steel Surface Finishes inconsistent architectural precast Buildings Buildings Accidents usually fatal Q & A Q & A Steve Miller Steve Miller Construction Management Construction Management 2
4/28/2008 Plaza East Plaza East Chantilly, Virginia Chantilly, Virginia Project Overview Project Overview Building Envelope Building Envelope Analysis 1: Building Analysis 1: Building Envelope Envelope Area and cost Calculations Analysis 2: Green Analysis 2: Green Roof Roof Estimated Façade Costs Implementation Implementation Quantity Unit Total Unit Cost Total Cost Precast (original) 23,663 sf ‐‐ $2,600,000.00 Versawall 23,663 sf 30 $709,890.00 Formawall Dim Series Formawall Dim. Series 23 663 23,663 sf sf 60 60 $1 419 780 00 $1,419,780.00 Analysis 3: Analysis 3: Checking Green Checking Green Roof Loads Roof Loads Savings: 4” Versawall with Duracast Finishing Actual precast cost (not including change orders): $2,600,000.00 ‐ $709,890.00 = $1,8 90 ,110 .0 0 Research: Research: Implementation of Implementation of Formawall Dimension Series with Duracast Finishing Software for Steel Software for Steel Actual precast cost (not including change orders): Buildings Buildings $2,600,000.00 ‐ $1,419,780.00 = $ 1,18 0 ,220 .0 0 Q & A Q & A Steve Miller Steve Miller Construction Management Construction Management Plaza East Plaza East Chantilly, Virginia Chantilly, Virginia Project Overview Project Overview Building Envelope Building Envelope Analysis 1: Building Analysis 1: Building Envelope Envelope Top Floor Only Energy Savings Analysis 2: Green Analysis 2: Green Existing Form awall and Versawall Roof Roof Form awall R-Value of 10 for Walls R-Value of 20 and 30 for Walls Implementation Implementation 1.90 kBtu/ft 2 Heating R-Value of 18 to 19 for Roof R-Value of 18 to 19 for Roof ‐ 0.1 kBtu/ft 2 Cooling 1.8 kBtu/ft 2 Total Analysis 3: Analysis 3: Checking Green Checking Green Annual Energy Costs Savings were $0.021/ft 2 Roof Loads Roof Loads Versawall 1.6 kBtu/ft 2 Heating Research: Research: Implementation of Implementation of ‐ 0.3 kBtu/ft 2 Cooling Software for Steel Software for Steel ‐ 0.1 kBtu/ft 2 Other Buildings Buildings 1.2 kBtu/ft 2 Total Annual Energy Costs savings were $0.012/ft 2 Q & A Q & A Steve Miller Steve Miller Construction Management Construction Management 3
4/28/2008 Plaza East Plaza East Chantilly, Virginia Chantilly, Virginia Project Overview Project Overview Green R oof Implementation Green R oof Implementation Analysis 1: Building Analysis 1: Building Envelope Envelope Top Floor Only Proposal: Use m oney saved from different façade to add a Green Roof to help with Energy Savings Analysis 2: Green Analysis 2: Green Existing Green Roof Roof Roof Implementation Implementation R-Value of 10 for Walls R-Value of 10 for Walls Som e Green Advantages R-Value of 18 to 19 for Roof R-Value of 30 for Roof Helps manage storm water – almost 1000 parking spots • Solar Absorption 0 .6 Solar Absorption 0 .2 • Reduce noise pollution Analysis 3: Analysis 3: Long life span from ultraviolent protection • Checking Green Checking Green • Creates habitat for birds and other animals Roof Loads Roof Loads Helps with the urban heat island effect • Research: Research: Implementation of Implementation of Software for Steel Software for Steel Buildings Buildings Q & A Q & A Steve Miller Steve Miller Construction Management Construction Management Plaza East Plaza East Chantilly, Virginia Chantilly, Virginia Project Overview Project Overview Green R oof Implementation Green R oof Implementation Analysis 1: Building Analysis 1: Building Envelope Envelope Energy Savings Years needed to m ake m oney back? Analysis 2: Green Analysis 2: Green Green Roof $442,000 ‐ $234,000 = $208,000 4.5 kBtu/ft 2 Heating Roof Roof Implementation Implementation 0.1 kBtu/ft 2 Cooling 0.2 kBtu/ft 2 Other Annual Energy Cost Savings does not apply 4.8 kBtu/ft 2 Total Analysis 3: Analysis 3: After 20 years build up roof needs replaced: Checking Green Checking Green Annual Energy Costs Savings were $0.003/ft 2 Roof Loads Roof Loads ($9/ft 2 )(26,000ft 2 )(2 nd roof) = $468,000 > $442,000 Cost of Existing Roof Cost of Green Roof $9 per ft 2 at 20 years life span $8 to $12 per ft 2 additional to existing price at 40 to 50 years life span Research: Research: Implementation of Implementation of Software for Steel $17/ft 2 x 26000 = $442,000 Software for Steel Green roof pays for itself after 20 years… Buildings Buildings $ 208,000 additional original cost …and lasts up to the next 20 to 30 years Q & A Q & A Steve Miller Steve Miller Construction Management Construction Management 4
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