2nd MARDIV Headquarters

Project Location: Jacksonville, North Carolina
Owner: Department of the Navy 
Architectural Firm: STANTEC Architecture, Inc. 
Rating system: LEED v4 BD+C and ASHRAE 90.1-2013 
Gross floor area: 68,000 GSF
Project type: Office

Courtesy of STANTEC Architecture, Inc.

2nd MARDIV Headquarters (MARDIV) is complex of a two-story existing building and a three-story new addition. Climatic Design, LLC (CDL) developed a simplified energy model and preliminary energy analysis for MARDIV per the Schematic Design set. Multiple Energy Conservation Measures (ECMs) were modeled to demonstrate how the project can comply with LEED v4 BD+C\ASHRAE 90.1-2010 requirements. In addition, CDL developed a whole-building energy model simulation, a comprehensive energy analysis and an assessment of building systems and configuration for the MARDIV per 100% PRE-FINAL set to demonstrate the project would comply with the UFC 1-200-02 Section 2-3.1.1 requirements. The simulation results of the final energy models indicate with execution of the selected ECMs, The facility would be 40.5% more energy cost efficient than the ASHRAE 90.1-2013 reference model and the site energy use intensity (EUI) of the proposed design would be 25.8 KBTU/sf-yr. Per UFC 1-200-02 Section 2-3.1.1, percentage improvement of the proposed model over the ASHRAE 90.1-2013 baseline is 39.2% (Section 2.B.3) and meets the requirements.

Rendering of the Baseline Reference Model with the original orientation, North East view
Rendering of the Baseline Reference Model demonstrating different Glazing types, North West view
Rendering of the Proposed Model demonstrating different Construction types, South West view
Annual Energy Consumption by Endues – Proposed Design and Baseline Case

UFC 1-200-02 REQUIREMENT

UFC 1-200-02 requires when using ASHRAE 90.1-2013, energy consumption levels for both the ASHRAE Baseline Building and proposed building alternatives should be determined by using the Performance Rating Method found in Appendix G of ASHRAE 90.1, except for the formula for calculating the Performance Rating, which should be replaced by the following formula:

Percentage improvement = 100 × ((Baseline building consumption − Receptacle and process loads) − (Proposed building consumption − Receptacle and process loads)) / (Baseline building consumption − Receptacle and process loads)

Where:
Baseline building consumption = 2,578.7 MBTU
Receptacle and process loads = 475.1 MBTU
Proposed building consumption = 1,753.1 MBTU
Percentage improvement = 100 × ((2,578.7 – 475.1) − (1,753.1 – 475.1)) / (2,578.7 – 475.1)
                                                = 100 x (2,103.6 – 1,278) / 2,121.6
                                                = 100 x (825.6 / 2,103.6)
                                                = 100 x 0.392
Percentage improvement = 39.2%