Pearl Building Rating System - Estidama

Calculations and
Methodology
References None
� Evidence of purchase and installation of these materials in the project in the form
of invoices from suppliers and installers.
� The ‘furthest point of origin’ is the longest distance to the project site from (1) the
point of extraction, harvest or recovery or (2) the point of manufacture.
� The distance traveled is calculated as (‘Distance traveled by road or rail’ + 0.1 x
‘Distance traveled by sea’)
� For composite materials, a weighted average by weight (mass) must be applied to
the distance. This calculation is not necessary for materials where one major
constituent represents at least 90% of the final material by weight.
� Where materials or primary constituent elements are quarried, extracted, or
harvested, the calculation begins at this point and includes the distance traveled to
the manufacturing/processing facility.
� Where products are primarily comprised of recycled materials (i.e. 90% by weight
or more), the calculation begins at the point of manufacture.
� Calculations to include distance to site but do not include returns.
� Total Material Cost: exclude labor and equipment costs and include the following
divisions from the Construction Specifications Institute (CSI) MasterFormatTM or
equivalent: Division 03 Concrete, Division 04 Masonry, Division 05 Metals, Division
06 Wood, Plastics, and Composites, Division 07 Thermal and Moisture Protection,
Division 08 Openings, Division 09 Finishes, Division 10 Specialties, Division 31
Earthwork, Division 32 Exterior Improvements. It is optional to also include Division
12; however, associated costs have to be carried throughout all Stewarding
Materials credits.
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