High Performing Buildings - Summer 2011 - (Page 22)

Building EnvElopE roof Type single-ply white ethylene propylene diene monomer (ePdm) membrane overall r-value r-15.63 reflectivity 0.84 Walls Type masonry overall r-value r-3.53 glazing percentage 27.3% Basement Basement wall insulation r-value r-3 Windows u-value 0.4 solar Heat gain Coefficient (sHgC) 0.46 Visual Transmittance 0.85 location latitude 42° 44’ orientation north/south Above Christman Square after renovation. The reuse of a historic building on a previously developed site is intrinsically resource efficient. Its centralized urban location provides pedestrian access to community services, facilitating the use of public transportation and existing parking facilities. Above Right Christman Square before renovation. and Public/Private Partnership Tax Credits, Page 26) for controls installation, fine-tuning and commissioning. Unfortunately, the controls technician assigned to the project did not have the required skills and experience to satisfactorily complete the installation in the time allocated (despite working for a highly qualified and reputable firm), and no systems level commissioning was conducted. 22 HigH Performing An extensive recommissioning process was developed to verify and fine-tune the operation of all energy-using systems. The primary recommissioning team was comprised of the HVAC systems design engineer, a temperature controls technician, the controls contractor and the sustainable programs manager from The Christman Company. A Level II ASHRAE energy audit was conducted in house to identify all low- and no-cost energy saving measures as well as measures that required capital expenditure. Prakash Patel E n E r g y at a g l a n c E for JulY 1, 2009 – Jun e 30, 2010 Annual energy use intensity (site) 67.6 kBtu/ft2 natural gas 37.9 kBtu/ft2 electricity 29.7 kBtu/ft2 Annual source energy 137.9 kBtu/ft2 Annual energy Cost index (eCi) $1.18/ft2 savings vs. standard 90.1-2004 design Building 20% energY sTAr rating 81 Heating degree days 6,273 Cooling degree days 492 W at E r at a g l a n c E Annual Water use 138,200 gallons Buildings summer 2011 The Christman Company

Table of Contents for the Digital Edition of High Performing Buildings - Summer 2011

Commentary
Contents
Stanford University's Y2E2
The Christman Building
The Gettysburg National Military Park Museum and Visitor Center
Cannon Design Regional Offices, Power House
Great River Energy Headquarters
Letters
Products
Advertisers Index

High Performing Buildings - Summer 2011