Pearl Building Rating System - Estidama

LBi-R1: Healthy Ventilation Delivery
Intent To protect the quality of air drawn into buildings for ventilation and to ensure minimum
delivery of outdoor fresh air.
Credit
Requirements
Requirement
Achievement
Credit
Submission:
Design Rating
Credit
Submission:
Construction
Rating
Calculations and
Methodology
GENERAL
Undertake and document an observational survey of local air quality according to
sections 4.2 and 4.3 of ASHRAE 62.1.2007.
Demonstrate that the building mechanical system meets the following requirements:
� Separation distances between outdoor air intakes and any exhausts or discharge
points comply with ASHRAE 62.1.2007 or local code whichever is more stringent;
� All exhausts are located outside of the defined public realm or as defined by local
code, whichever is more stringent; and
� Demonstrate that all of the occupied areas in the building comply with the minimum
thresholds set out in ASHRAE 62.1:2007 using the ventilation rate procedure or local
code, whichever is more stringent.
ADDITIONAL REQUIREMENT/CLARIFICATIONS
None
This is a requirement. There are no Credit Points awarded.
� Documentation of an observational study of local air quality including photographs
of surrounding sources of pollutant emissions;
� Mechanical system drawings marked-up to clearly show distances between air intake
points and exhaust air or other discharge points and the distances from the air
exhaust points to any defined public realm areas;
� Narrative describing how the mechanical design system meets the Credit
Requirements, including description of mechanical ventilation system; and
� Spreadsheet calculations of fresh air ventilation rates based on the ventilation rate
procedure for all zones.
� As-built mechanical system drawings marked-up to clearly show distances between
air intake points and exhaust air or other discharge points and the distances from
the air exhaust points to any defined public realm areas;
� Narrative describing how the mechanical design system meets the Credit
Requirements, including description of mechanical ventilation system; and
� Commissioning results demonstrating compliance with minimum fresh air ventilation
rate requirements.
The calculation process to determine minimum fresh air rates for various space usage
types are documented in the reference standard.
References � ASHRAE 62.1.2007 “Ventilation for Acceptable Indoor Air Quality”, www.ashrae.org
Pearl Building Rating System: Design & Construction, Version 1.0, April 2010 76 of 223