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Pearl Building Rating System - Estidama

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Credit<br />

Submission:<br />

Construction<br />

<strong>Rating</strong><br />

Calculations and<br />

Methodology<br />

laterals.<br />

No Water Used for Heat Rejection<br />

� Confirmation that no water is used for heat rejection.<br />

Water-Based Heat Rejection<br />

� Updated <strong>Building</strong> Water Calculator confirming the percentage of the projects<br />

cooling tower/district cooling water make-up requirements that can be served<br />

using the Exterior Water Allowance;<br />

� As-built composite utility schematic illustrating routing of recycled water mainline<br />

and laterals; and<br />

� Photographs of the installed cooling towers/district cooling plant, water recycling<br />

systems (where installed) and routing of recycled water mainline and laterals<br />

indicating their color code.<br />

No Water Used for Heat Rejection<br />

� Confirmation that no water is used for heat rejection.<br />

The projects cooling tower/district cooling water make-up requirements must be based<br />

on the proposed buildings cooling demand determined within RE-R1 Minimum Energy<br />

Performance / RE-1 Improved Energy Performance.<br />

The Exterior Water Allowance, EWA, that is available to serve the projects exterior<br />

water demand is determined as per the Calculations and Methodology section of PW-<br />

2.1: Exterior Water Use Reduction: Landscaping<br />

EWA must not be ‘double counted’ towards other uses such as irrigation and/or water<br />

features. The design team must decide upon the most appropriate use of the Exterior<br />

Water Allowance in order to balance their building wastewater volume with their<br />

exterior water demand. The overall water balance must be documented in the <strong>Building</strong><br />

Water Calculator.<br />

References � <strong>Pearl</strong> <strong>Rating</strong> <strong>System</strong> <strong>Building</strong> Water Calculator<br />

<strong>Pearl</strong> <strong>Building</strong> <strong>Rating</strong> <strong>System</strong>: Design & Construction, Version 1.0, April 2010 130 of 223

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