3.3.1. Part A: Application to Prerequisites

Phase 2A is the completion of prerequisites that are mandatory to be admitted to the LEED certification process. According to the classification of prerequisites (Figure 2), prerequisite EA p2, concerning operating energy performance, was developed first. For Ca' Rezzonico, the prerequisite was achieved in comparison with similar buildings and the recently completed energy performance assessment. A 25% improvement in the energy consumption was verified (with reference to the previous 12 months) in comparison with the usage data of the three contiguous years (with reference to the last five), using a normalized index for occupancy, building use, and climate.

The work program indicates the need for an investigation into the real connections between other prerequisites through the analysis of required data and documentation. The documents needed for prerequisite p2 in the EA category can be used for other prerequisites (Table 6). The meter calibration report requires data collection from permanently installed meters, according to prerequisite p3 in the EA category; the early assessment for energy performance required by prerequisite EA p1 could be integrated into the utility bill summary. Prerequisite EQ p1, regarding minimum indoor air quality, requires the same occupation schedules as in the energy audit. The table presents an example of the relationships between credits. The documents that manage the same kind of information are highlighted in the same color, showing that they could be treated together as proposed in the methodology.

**Table 6.** Example of relationship between the first four prerequisites according to the work program in Figure 2. The required documentation is listed for each prerequisite and the colors indicate the similar documents because they manage the same kind of information.



