Page 241 - The Engineering Guide to LEED-New Construction Sustainable Construction for Engineers

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FIGURE 5.3.2 Salvaged wood alcove area at Cox and Dinkins, Engineers and Surveyors,
Columbia, S.C. (Photograph taken June 2007.)

It is impossible to compare different types of construction materials unless there is
a basis by which they can be compared. In the energy category, when there are different
energy sources and types, this common rating system is cost or value. Again, in the
remaining Materials and Resources categories, the calculations are based on cost or
value. This is summarized in Table 5.0.5.
To promote as many salvaging activities as possible, and at the same time promote
as economical a project as possible, the cost values of the salvaged items used in the
calculations represent either the cost of salvaging (either the costs to refurbish the on-
site items or the cost to purchase the off-site items) or the market value of the equivalent
new item, whichever is greater.
Let the following variables be defined:
MATL$ Total cost of all project materials in CSI categories 3 through 10, 31.60,
T
32.10, 32.30, and 32.90 plus any furniture or furnishing costs included
consistently in MR subcategories 3 through 7. LEED 2009 specifically
includes taxes, transportation, and delivery fees to the site as part of the
material acquisition costs. (Total default costs if not itemized can be
calculated as 45 percent of total construction costs in the same 2004 CSI
categories. Use only hard construction costs. Add in furniture or furnishing
costs if included consistently in MR subcategories 3 through 7. Salvaged
items are valued at the greater of market value or actual salvage cost.)
MATL$ Total cost of salvaged materials plus any salvaged furniture or furnishing
SAL
costs if included consistently in MR subcategories 3 through 7 (Salvaged
items are valued at the greater of market value or actual cost.)