Users can document the USGBC LEED v4.0 - IEQ: Quality Views credits using cove.tool's Views 3D Analysis.
Before we begin
Download the Daylight and Quality Views Calculator from USGBC. The forms are available for both LEED v4.1 and LEED v4.0 versions of the credit. Cove.tool does not yet generate credit documentation as of 11/2020 (though this is a planned feature), rather users can use the analysis from the app to complete LEED forms manually.
Before uploading geometry to cove.tool, users must distinguish between regularly occupied floor-area and non-regularly occupied floor-area. In the analysis model, regularly occupied floor area is brought into cove.tool through the Floor Category export, and non-regularly occupied floor area through the Shading Device Category. Only the floor area imported through the floor category will contribute directly to the final percentage views assessment. Also note that the cove.tool plugin's do not read Room Tags or other space denoting inputs, only elevation and surface area is collected when exported to cove.tool. Video tutorials for upload geometry with a plugin can be found on the App store, as well as troubleshooting articles.
Written Tutorial for Documentation
Step 1 - Run 3D Analysis
After uploading your building geometry, run the quality views analysis in cove.tool. As the analysis completes, levels will load one-by-one with their % performance. If the percentages do not load at first, try refreshing your browser page. Before hitting the "Calculate" button, make sure your building is correctly placed and loaded (tutorial).
Step 2 - In the Calculator, Identify each Space ID
Begin by setting your LEED calculator to IP units. In the Quality Views tab of the excel sheet, start listing the regularly occupied spaces in the building. Details of the Space ID, Space Description, and Total Regularly Occupied Area (sqft) should be sourced from the project drawings.
Step 3 - Calculate Area with Direct Line of Sight to Vision Glazing
Users can collect information about Area with Direct Line of Sight to the Outdoors via Vision Glazing from their model, based on layout and access to views. Detailed steps are outlined in the LEED Reference Guide. With this complete the 5th column on the Quality Views Calculator.
Step 4 - Select View Types
Each level in the building geometry is analyzed by cove.tool for 4 quality view assessments:
- Total Quality Views: Total percentage of floor area that has at least two of the following three kinds of views.
- Type 1 - 90° Sight Lines: Multiple lines of sight to vision glazing in different directions at least 90 degrees apart
- Type 2 - Sky and Context: Views that include at least view to the sky and objects at least 25 feet (7.5 meters) from the exterior of glazing
- Type 3 - Unobstructed View: Unobstructed views located within a distance of three times head height of vision glazing
The overall result for the analysis is shown in the top right-hand corner. If the building has more than 75% Quality Views, in each category, the LEED result says Pass otherwise it shows Fail. This can be viewed for each of the view types separately. Using this information, a similar result can be generated for each floor level. Next to the floors on the right, a percentage value is displayed for that view type. Users can turn on one floor at a time to record the percentage value and save an image using the camera tool (in the top left corner).
Step 5 - Enter data for each floor level
Check the percentage values, for each level of the building, in each of the view type categories. If the number is higher than 75% then that floor level passes the requirement for that view type. Thus, that view type can be selected in the LEED Calculator's drop-down menu under View Types. LEED requires that each space achieve at least two out of the four view types to get the credit.
Step 6 - Compile Documentation
Export Maps for each level, and compile into a single report. Submit along with calculator and narrative.
With this method, users will have used the cove.tool's Views analysis to document for LEED certification.