The Use Type is a required input field in the Extended Project Info section. Use types may be selected by clicking the “+” sign at the far right of the field.
A pop-up will appear with the DDx building use types are the same set used in the original AIA 2030 Commitment spreadsheet tool, with some exceptions. . Once the use type is selected and the square footage entered, the Zero Tool baseline and 2030 Target will be generated. Additional use types can then be added.
Zero Tool has its own set of use types that are based on the ENERGY STAR Target Finder use type set. To enable the Baseline Zero Tool Calculation, which calculates the BASELINE Baseline EUI for the project, the DDx use type set has been mapped to the Zero Tool use type set. The Zero Tool calculation is calculated through the Zero Tool web services API by selecting the Define Baseline "Zero Tool" option in section 3. By default, the BASELINE Baseline EUI is calculated using the minimum input requirements for the use types selected for the project in section 1. A . You may be able to calculate a more detailed BASELINE EUI calculation for the project can be done by selecting the "Optional Inputs" button, which displays the Zero Tool dialog box. The optional inputs for each of the use types associated with the project can be accessed by selecting the use type radio button. Baseline EUI by visiting the Zero Tool website.
Use Types Table
The table displays how the DDx building types (column 1) are mapped to the Zero Tool set (Column column 2). When a use type is selected in the DDx, if the Zero Tool calculation is used, the calculation will use the corresponding Zero Tool Finder use type displayed in the second column.
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Parking Use Type
Users can associate “parking” with a project that has another use type specified.
Parking has been implemented in the DDx in the same way as it is on ENERGY STAR Target Finder (Technical Reference: Parking and the ENERGY STAR Score in the United States and Canada), and the Zero Tool (Architecture 2030).
The parking use type includes three types of parking:
- Open parking
- Partially-enclosed parking
- Completely-enclosed parking
Excerpt Technical Reference: Parking and the ENERGY STAR Score in the United States and Canada: Energy use of a parking area may be composed of three main factors: energy required to provide adequate lighting, energy required for ventilation, and energy required for heating. The specific requirements for each of these components will depend on the type of parking (e.g., open parking lot, completely enclosed garage, partially enclosed garage) and the location of the structure (very cold vs. mild climate). For each type, general assumptions and calculations can be made based on standard engineering design and safety principles.
How the Parking Use Type is different
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Parking can be added as a secondary use type for buildings with attached structured parking (but cannot be the primary use type). The use type includes open, partially enclosed, and completely enclosed parking. The area entered for parking should be the sum of the areas for the three parking types.
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How to use the Parking Use Type
The following example provides step-by-step instructions for how parking can be used on a project.
EXAMPLE - Multiple Use Types
Project:
If a project which includes parking within the building has been modeled and can be analyzed in Zero Tool, use Zero Tool, entering parking as a secondary space type to arrive at a comparable average EUI. If the project has not been modeled or cannot be analyzed in Zero Tool, exclude the parking area from the total GSF.
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For example, for a project consisting of a 150,000 sf office building with (3) three parking types (open = 10,000, partially - enclosed = 20,000, fully - enclosed = 30,000)
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- Use Type 1 – Select “Office – Large” from the drop-down list of use types
- Use Type 1 Area – enter 150,000
- Select “+” icon to add a second use type
- Use Type 2 – Select “Parking”
- Use Type Area 2 – enter 60,000
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, enter Office - Large as the first use type, with 150,000 sf, and then add Parking as the second use type with a square footage of 60,000. This will allow the parking to be reflected in the Baseline Energy Use calculation.