Snap - November/December 2013 - (Page 65)
continuing education: leed v4
from architectural record
Making Sense of the New LEED
The latest version of the widely adopted green building standard is set to
debut this season with the most thorough overhaul since its inception.
Here's what you need to know. by nadav malin
a revamped leed is
unlike the old measurement
launching this year. The new
and verifcation credit, the new
Leed V4 key concepts
The laTesT version of The raTing sysTem inTroduces several new
rating system, LEED version 4
sTraTegies for realizing beTTer-performing, healThier buildings,
(v4 for short), has generated
credit "refects how operators
wiTh smaller environmenTal fooTprinTs.
signifcant controversy in
use data and gives people a
the design and construction
better head start" at tracking
industries. Practitioners are
their actual performance.
The new crediT for inTegraTive process, a collaboraTive working
concerned about how difermeThod ofTen referred To as "inTegraTed design," spells ouT
Change at Last
sTeps for idenTifying opporTuniTies for energy and waTer
ent the new LEED will be from
savings Through an early examinaTion of inTerrelaTionships
the current one, and product
The update was developed in
among building sysTems.
suppliers are worried about
accordance with the USGBC's
life-cycle assessmenT (lca)
new demands from their
consensus process, which
Two crediTs in leed v4 rely on lca-an analysis Technique ThaT
includes volunteer commitquanTifies The impacTs associaTed wiTh all sTages of The life of
a producT or a building, from raw maTerial exTracTion Through
Mara Baum, director
tees and "technical advisory
insTallaTion, or in some cases, use and disposal.
of sustainability for HOK's
groups" who draft changes.
health-care practice, captures
maTerials sourcing and Transparency
the mood well when she says,
cycles gave stakeholders-
one of several new maTerials crediTs encourages producT
suppliers To disclose Their use of poTenTially Toxic subsTances.
"It feels like too much change
both USGBC members and
now, but that's making up for
nonmembers-the opportuenvelope commissioning
not enough change in the last
nity to weigh in.
leed v4 includes an opTion for TesTing The building's exTerior
envelope for air and waTer TighTness.
few years," noting that many
LEED v4 was approved in
aspects of LEED hadn't been
July by 86 percent of the voting
modifed since the launch of
body, after three years of develversion 2.0 in 2000. "The old version
opment and six public-comment periods.
was starting to feel stale," agrees Josh Radof,
For the previous release, LEED 2009,
principal with the consulting frm YR&G
the USGBC determined that the market was
were the addition of LEED for Existing BuildSustainability.
still getting familiar with the rating system
ings (EB) and LEED for Commercial Interiors
There are important pieces missing from
and wasn't ready to accommodate major
(CI) in 2004, and then an update that aligned
the current rating system, according to Scot
changes. The earlier update focused on point
all the rating systems around a consistent
Horst, senior vice president for LEED at the
reallocations rather than the rating system's
100-point scale in 2009.
U.S. Green Building Council (USGBC). In the
content, and it required only two publicLEED EB, now called LEED for Existing
realm of product ingredients, for example,
comment periods before the member ballot.
Buildings: Operations and Maintenance,
"We still don't know what it is we're bringing
But that restraint created enormous pent-up
covers retrofts and ongoing operations
into our space and exposing ourselves to
demand for changes, inside and outside the
but not major renovations. It now rivals the
when we do a green building," he says. "It's
organization. There was much broader audinew-construction rating systems in market
kind of a shameful thing." A new ingredientence participation this time, says Chrissy
reach, with approximately 2,500 projects
transparency credit to address this shortMacken, USGBC's assistant project manager
certifed, comprising over one billion square
coming has proved particularly contentious,
for v4, both because LEED is now more widely
feet. Unlike the new construction rating sysraising the ire of some product manufacturers
used and because "it's the frst time that
tems, which award points based on predicted
and their chemical suppliers.
we've proposed changes to basically every
energy and water efciency, LEED EB rewards
Since it frst launched in March 2000,
prerequisite and credit."
LEED has undergone many incremental
LEED v4, originally slated to launch in 2012,
Short of making all projects wait for certirevisions. It expanded from one rating system,
is now set for public release in November.
fcation until they've demonstrated that they
initially created for ofce buildings-LEED
That's when project teams will be able to
actually perform as predicted-which might
for New Construction and Major Renovaregister and access online forms, reference
discourage many owners from pursuing
tions-into multiple rating systems for varied
guides, and other supporting materials.
LEED-the USGBC is moving to strengthen
building types, including schools and healthHowever, in response to concerns that some
the connection between aspiration and percare facilities. The most noteworthy changes
product- and materials-related measures in
formance. For example, according to Radof,
sweets.com | november/december 2013 | snap | 65
Table of Contents for the Digital Edition of Snap - November/December 2013
Snap - November/december 2013
Dekton on Deck
Case Study: Hospitality
Daylight & Sun Control
Glass & Glazing
Product Focus: Glass & Glazing
Green Product Roundup
Made in the USA
Making Sense of the New Leed
Live & Learn: Ceu Courses
The Sweets Spot
Dates & Events
Trade Show News
Partners in Design
Snap - November/December 2013
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