Tabulate reused surfaces of following elements: the surface area (one side only) of all finished flooring, finished ceilings, interior doors, exterior or party walls, visible surfaces of built-in case goods, and two sides of interior non-structural walls.
Update the checklist assembled during schematic design to confirm that the project is still on track with 50% of reused interior elements for LEED compliance. For example, a wall initially assumed to be in good condition may be found to be in poor condition, and needs to be replaced with new materials. The checklist will help track credit compliance throughout the design and construction process.
Provide manufacturer data verifying the flush/flow rate of all installed fixtures and fittings that either exceed or do not meet UPC/IPC specifications.
If performance calculations indicate that water use exceeds the baseline case, find opportunities for water-use reduction through replacement of fixtures and fittings with high-efficiency options.
Complete performance and baseline calculations in the LEED Online credit form using fixture data and occupancy and usage information. For plumbing systems substantially completed before 1993, the baseline is set at 160% of the IPC/UPC-compliant figure; however, for systems substantially completed in 1993 or later, the baseline is set at 120% of the water usage with code-compliant fixtures.
Verify that all relevant fixtures have been replaced since January 1, 1993 and that the installed fixtures all meet the prevailing plumbing fixture efficiency standards in place at the time they were installed.
Verify that the project building was initially built after January 1, 1993 and that the installed fixtures all meet the prevailing plumbing fixture efficiency standards in place at that time.
Provide a copy of the official LEED scorecard confirming that the project building previously earned at least one point in water use reduction credits under another LEED rating system.
