Pearl Building Rating System - Estidama

Rating features; and
� Evidence that all purchased and installed covers have compliant outer surface SRIs.
Calculations and
Methodology
� Primary pedestrian corridors are those pedestrian networks located along
boulevards, avenues, streets or access lanes as defined in the Abu Dhabi Urban
Street Design Manual (Chapter 5).
� Secondary pedestrian walkways are all other walkways, including sikkas.
� Through zones are defined in the UPC Urban Street Design Manual.
� Shade calculations must be undertaken on the equinox (March 21 st ) and the summer
solstice (June 21 st ) at 1.00pm clock time. The compliant shaded area must be in
shade at both the equinox and summer solstice.
� In all calculations, shade from adjacent buildings is to be included.
� Dappled shade of more than 60%, such as that created by a grid or lattice, may be
considered fully shaded. Dappled shade less than 60% must be calculated based on
the actual shaded surface.
� SRI values for the outer surface of cover elements can be calculated based on solar
reflectance and emittance numbers as defined in the American Society of Testing
and Materials Standard E1980-01. Alternatively manufacturer’s evidence can be
supplied where the testing is in accordance with the referenced standards in LBo-
R3.
References � Refer to LBo-R3 Outdoor Thermal Comfort Strategy.
Pearl Building Rating System: Design & Construction, Version 1.0, April 2010 58 of 223