Pearl Building Rating System - Estidama

LBo-1: Improved Outdoor Thermal Comfort
Intent To improve outdoor thermal comfort during transition months and further reduce
thermal discomfort during summer months in public spaces and walkways.
Credit
Requirements
Awarding Credit
Points
Credit
Submission:
Design Rating
Credit
Submission:
Construction
GENERAL
Demonstrate that the outdoor thermal comfort strategy has been improved beyond the
minimum established under credit LBo-R3 Outdoor Thermal Comfort Strategy by
increasing the shade measures as follows :
Space Type 1 Credit
Point
Surface car parking (including parking on roof
surfaces)
Public Open Space (including privately
owned)
Primary Pedestrian Walkway (based on 1.8m
width within the through zone)
Secondary Pedestrian Walkway (based on
1.8m width within the through zone)
2 Credit
Points
50 % 55 %
65 % 70 %
80 % 85 %
80 % 85 %
Cycle tracks 55 % 65 %
ADDITIONAL REQUIREMENT/CLARIFICATIONS
� Where cover is provided by structures such as canopies or other architectural
elements, the outer surface of the shading element must have a minimum Solar
Reflectance Index (SRI) of 29.
� Shade from trees should be measured at 3 years growth.
� Public open space shade requirements exclude active recreational areas such as
playing fields and ball courts.
CREDIT POINTS REQUIREMENTS
2
(maximum)
Design Rating
1 Meet shading requirements for 1 credit point.
2 Meet shading requirements for 2 credit points.
2
(maximum)
Construction Rating
1 Meet shading requirements for 1 credit point.
2 Meet shading requirements for 2 credit points.
� Updated Outdoor Thermal Comfort Strategy report from LBo-R3 with additional
section that compares and demonstrates shading improvements;
� Plan and tabulated results showing achievement of % of shading of applicable
spaces at 1:00pm clock time on the Equinox and Summer Solstice; and
� Extracts from specifications relating to the SRI of all cover elements.
� Updated outdoor thermal comfort strategy including narrative supported by as-built
drawings and photographs of the applicable shade areas, highlighting all measures
contributing to improving the exterior microclimate, including planned or existing
Pearl Building Rating System: Design & Construction, Version 1.0, April 2010 57 of 223