High Performing Buildings - Fall 2010 - (Page 43)

Building enveloPe roof Type 4 in. min. of polyisocyanurate insulation, cover board and a fully adhered, white thermoplastic polyolefin (TPo) membrane; air barrier membrane connection to wall at all roof edges; limited use of standing seam roof on prekindergarten addition overall r-value r-24.2 reflectivity 0.79 reflectance and 0.92 emittance (TPo) Walls Type Cold formed metal studs, sheathing, 2 in. of closed-cell spray foam insulation, and either brick or metal siding; air barrier transition strips at every change of material and around all openings overall r-value r-20.8 glazing percentage 32% Foundation slab edge insulation r-value r-10 under slab insulation r-value r-10 for first 2 horizontal ft of slab edge; r-10 on the entire inside vertical surface of footing or foundation wall Windows u-value 0.29 solar Heat gain Coefficient (sHgC) 0.38 Visual Transmittance 70% location latitude 38.45° orientation 13.14° from true north gallons per year. all of the site water is treated via cistern filtration, bioretention areas or both before entering an existing storm water management pond. a portion of the harvested rainwater is further filtered and treated for delivery to the building flushing fixtures. the remainder is used for irrigation. the cistern was oversized to help filter and contain a two-year storm event (the heaviest 24-hour rainfall predicted to occur during a two-year period). the top of the cistern, and associated controls house, functions as an outdoor teaching space, featuring a 22-ft tank gage. Mounted on the Informal learning spaces are located on every floor at the western end of each educational “house.” these breakout spaces facilitate individual and small group study, as well as one-on-one tutoring. Many adults prefer to read in a reclined position; why shouldn’t students have the same opportunities to learn a love of reading? this second floor space has a direct view into the forest understory. outside of the cistern pump house, a 96 ft2 mural illustrates the system layout and the natural water cycle. educational maps teach children how rainwater falling at their school flows through Bull run stream, the Occoquan and Potomac rivers, and on to the chesapeake Bay. Domestic water heating energy is minimized by the use of low-consumption fixtures and kitchen equipment. m a n a s s a s Pa r k ’ s C h a l l e n g e manassas Park, Va., is a small city surrounded by the northern Virginia suburbs of Washington, d.C. Ten years ago, the city began replacing its premanufactured mobile school facilities — an enormous challenge in a city with an extremely low tax base. The new manassas Park elementary school and Prekindergarten join the earlier Cougar elementary school to complete the city’s elementary campus. mPes serves a diverse population of students — many from immigrant families. The 2009–10 enrollment included 68% non-white and 26% children with limited english proficiency. forty-four percent receive free or reduced cost lunches. during the decade-long process to replace every school facility in the city, the school system’s pass rates on standardized tests increased from 40% to 90%. The mPes campus sits tightly surrounded by tract housing, private forest, and the historic Civil War landmark Camp Carondelet. The Battle of first manassas (also known as the first Battle of Bull run) was the first major land battle of the Civil War in 1861. The Battle of second manassas (second Battle of Bull run) in 1862 resulted in a Confederate victory that paved the way for the Confederacy’s invasion of the north. Camp Carondelet served as the forested winter quarters of the Confederacy’s louisiana Brigade between the first and second manassas campaigns. Prakash Patel and Vmdo Architects the kitchen’s gas water heater has a combustion efficiency of 98%, and mini-tank water heaters are located close to classroom and bathroom fixtures. Low-flow and automatic faucets minimize municipal potable water use. indoor environmental Quality Good IeQ doesn’t stop with elimination of allergens, VOcs and formaldehyde. children are highly susceptible to harmful effects from ethanol and ether found in many conventional school cleaning materials. Performing Buildings 43 fa l l 2 0 1 0 HigH

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