Page 26 - Designing for Zero Carbon-Volume 2_Case Studies of All-Electric Multifamily Residential Buildings

CASE STUDY NO. 1
IVY SENIOR APARTMENTS
Site landscaping provides a visual buffer between the new building and the shopping center activities. A bioretention area for storm water runoff was actually accommodated adjacent to the parking area.
Building Envelope – Insulation and Windows
The three-story building meets the basic requirements of California Title-24 code with regard to the insulating characteristics of the building envelope. The typical exterior wall uses conventional 2 x 6 wood framing with 5.5”-thick fiberglass batt insulation, for a U-value of 0.069 (R-21). The roof uses fiberglass batt insulation in the interstitial spaces of the roof framing and a tapered insulation board above the framing, for a total U-value of 0.026 (R-30). The concrete floor slab is uninsulated and has no edge insulation.
Windows and store-front glazing used in the exterior walls also satisfy the minimum requirements of California Title-24 Part 6 energy code, with a U-value of 0.27 for the double-glazed systems.
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Designing for Zero Carbon: Volume 2
Interior
Exterior
Interior Exterior
TYPICAL DETAIL — Corridor Wall Intersection with Roof
TYPICAL DETAIL — Intermediate Floor at Exterior Wall