High Performing Buildings - Spring 2012 - (Page 25)

Above The super high-efficiency insulated low-e glass pairs minimal solar heat gain with optimal visible light transmittance. Below The project takes advantage of the existing storm water pond (next to parking lot) and uses the adjacent utility easement on the site by creating a brick-paved plaza that connects it to the outdoor pavilion. pairs minimal solar heat gain with optimal visible light transmittance. The interior lighting system includes digital controls and photo sensors that automatically dim the fluorescent and compact fluorescent fixtures when natural daylight sufficiently illuminates a space. The South Lakeland branch doesn’t have traditional teller windows or cubicles, and only has a few private offices. Instead, electronic cash recyclers (a combination ATM, safe and teller’s cash drawer) and tablets allow for an open floor plan, which maximizes daylighting and views. e N e r G y at a G l a N C e Annual energy use intensity (Site) 74.69 kBtu/ft2 electricity 40.59 kBtu/ft2 renewable energy (Solar PV) 34.1 kBtu/ft2 Annual Source energy 170 kBtu/ft2 Annual energy Cost index (eCi) $1.18/ft2 Annual on-Site Solar energy exported 34.07 kBtu/ft2 Annual net energy use intensity 6.52 kBtu/ft2 Savings vs. Standard 90.1-2004 design Building 40.74% energY STAr rating 83 Heating degree days 505 Daylighting The two primary building elevations that face the adjacent roadways use an abundant amount of glazing that allows natural daylight to permeate the façade into all primary interior public spaces. Eighty-three percent of all regularly occupied spaces are daylit throughout business hours. Large overhangs, exterior sunshades, and interior suspended “clouds” diffuse the natural daylight that enters through the window walls and clerestory. The super high-efficiency insulated low-e glass Natural Ventilation Financial institutions require limited openings in the exterior envelope, so operable windows were not used in this project. Additionally, the local climate precludes natural ventilation in most cases because of the high heat and humidity levels. Cooling degree days 3,903 W at e r at a G l a N C e Annual Potable Water use 9,000 gallons or 2 gallons/ft2 ·yr Precipitation managed on site 100% Annual Harvested rainwater use 17,753 gallons (rainwater use is not metered; based on leed estimate) Percent of total water provided by harvested rainwater 66% Water Conservation In recent years, many development projects in this region have been halted because public utilities could not provide the required potable water supply. This project did not need to request additional potable water service because the existing property provided two previously dedicated potable water supply lines: one for the ice cream shop and another for irrigation. The irrigation line was rededicated to the new credit union building during construction. The project’s rainwater harvesting systems provide more than enough water to sustain the microirrigation system. The site’s “Florida friendly” vegetation requires 51% less water than a conventional design. Spring 2012 HigH Performing BuildingS 25

Table of Contents for the Digital Edition of High Performing Buildings - Spring 2012

High Performing Buildings - Spring 2012
Commentary
Contents
Evie Garrett Dennis Campus
Magnify Credit Union South Lakeland Branch
Natural Resources Defense Council
What Makes Buildings High Performing
University of Florida’s William R. Hough Hall
Products
Advertisers Index

High Performing Buildings - Spring 2012