High Performing Buildings - Fall 2010 - (Page 52)

had not anticipated. The spray field is the first approval of such a system by the Texas Commission on Environmental Quality (TCEQ). e Va l u at I n g g R e e n C o s t s a n d Pay B aC K The additional premium for Cheyenne one’s sustainable and efficient features was roughly 6%. The subsequent buildings have had less variance as the designers honed their approach. The overall cost variance now is roughly 1% – 2%. The owner of all four buildings estimates that the payback period for the additional cost of the buildings’ green features is approximately four years. The majority of the payback period is due to the elevators. The cost of a planted in place vegetative roof is approximately $20/ft2. A single-ply membrane, insulated cool roof (now required by the city of Houston) costs approximately $5.50 to $8/ft2 without insulation. A vegetative roof provides additional green space and onsite detention, and increases the value of the building by roughly 20%, according to the owner’s calculations. Indoor air Quality Low- to no-volatile organic compounds (VOC) finish materials have been used throughout the core and BuIldIng on exPeRIenCe The gulf freeway office Building was designed based on the designers’ experience from three previous office buildings that have achieved desired energy efficiency outcomes. The first and third are 48,000 ft2 three-story office buildings located in the medical center area of Webster, Texas. Cheyenne one is primarily medical offices in support of the immediately adjacent regional hospital and support facilities. Cheyenne one survived Hurricane ike with recorded winds of roughly 120 mph and more than 11 in. of rain with no damage or impact to the site, building or vegetative roof. The building has been in operation since late 2006 and is more than 80% occupied. Cheyenne one 2006 73.6 A mix of oaks, elms and maples will provide shade to about half of the parking area within five years. The reflective white concrete helps reduce the heat island effect, while LED parking lot lighting reduces night light pollution. Cheyenne iii is a twin of Cheyenne one, and is home to a single tenant researcher and developer of specialty medical devices. it includes a controlled manufacturing environment encompassing onethird of one floor. Cheyenne iii opened in the third quarter of 2008. Jacob White offices (the second building) is a one-story, 10,001 ft2 office building that serves as the headquarters for the owner’s operations. This building in friendswood, Texas, has been occupied since early 2009. each building is in the process of leed certification and energY sTAr designation. The lowest energY sTAr rating (based on design statements) of the four buildings is 94. Cheyenne III 2008 76.3 FC gulf Freeway 2010 24* Year opened energy use intensity (kBtu/ft2 · yr) Jacob White offices 2009 21.9 *Predicted 52 HigH Performing Buildings fa l l 2 0 1 0

Table of Contents for the Digital Edition of High Performing Buildings - Fall 2010

High Performing Buildings - Fall 2010
Table of Contents
IDeAs Z2 Design Facility
Lighting Design Alliance
Manassas Park Elementary School and Prekindergarten
FC Gulf Freeway Office Building
Capturing Condensate
National Australian Built Environment Rating System
Tyson Living Learning Center

High Performing Buildings - Fall 2010