Contents
EXECUTIVE SUMMARY
iii
1.0 BACKGROUND
1
1.1
Objectives
1
2.0 ANALYSIS OF EXISTING CONDITIONS
3
2.1
Relevant Design Criteria and Standards
3
2.1.1. U.S. Courts Design Guide
3
2.1.2. GSA PBS P-100
3
2.1.3. IESNA Lighting Handbook, 9th Edition
4
2.1.4. Energy Policy Act of 2005
5
2.1.5. ANSI/ASHRAE/IESNA Standard 90.1-2004
6
2.1.6. Federal Energy Code
6
2.2
Design, Procurement and Construction
6
2.2.1. GSA Design Excellence Policies and Procedures
6
2.2.2. Whole Building Design Guide
7
2.3
Courtroom Data and Project Background
7
2.3.1. Courtroom Data
7
2.3.2. GSA Staff Interviews
7
2.4
Design Problems
7
2.4.1. Synthesis of Findings from Arup Lighting Report
7
2.4.2. Synthesis of Findings from GSA Staff Interviews
8
2.5
Energy Analysis
8
2.5.1. Existing Power Density Analysis
8
2.5.1.1. Methodology
8
2.5.1.2. Summary of Lighting Power Density
9
2.5.1.3. Energy Code Compliance
10
2.5.1.4. Energy Usage Kilowatt-hours
10
2.5.2. Energy Modeling
10
2.5.2.1. ANSI/ASHRAE/IESNA Standard 90.1-2004 Models
10
2.5.2.2. Defining the Gap
12
2.5.2.3. Point-by-point Calculations
12
2.5.3. Energy Cost Savings
14
2.5.4. Energy Savings Summary
15
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