ABSTRACT
This study analyzed the Leadership in Energy and Environmental Design for Commercial Interior Certified, Silver, and Gold projects version 4.0 (LEED-CIv4) in California for the period 2015‒2020. Nonparametric tests were used to assess category and credit achievement, i.e., the difference between possible and achieved points and the correlation between associated credits. The results show that most of the credits in the location and transportation category and the indoor environmental quality categories had a high level of achievement, a few credits in the energy and atmosphere and materials and resources categories had a high level of achievement, and all of the credits in the water efficiency category had a low level of achievement. Some associated credits, such as surrounding density and quality transit, had a high level of achievement and a positive correlation, whereas other associated credits, such as life-cycle impact reduction and environmental product declarations, had a low level of achievement and a positive correlation. If LEED-CIv4 credits meet the requirements of the California Green Building Standards Code 2016 (CGBSC 2016), then these credits typically have a medium/high level of achievement. If LEED-CIv4 credits exceed the requirements of CGBSC 2016, then these credits have a low level of achievement. Therefore, to improve the next version of LEED-CI, it is necessary to improve the local green codes.
REFERENCES
ASHRAE 90.1. Commercial Adoption, States that have adopted a statewide commercial energy code that meets or exceeds an ASHRAE 90.1 standard, Commercial Code Status, http://bcapcodes.org/code-status/commercial/.
Bergmann,
R.,
Ludbrook,
J.,
Spooren,
W.P.J.M.
2000
.
“Different outcomes of the Wilcoxon-Mann-Whitney test from different statistics packages.”
The American Statistician
,
54
(
1
):
72
–
77
,
BREEAM.
BREEAM Offices 2008 Technical Manual
.
2009
.
Available online: https://tools.breeam.com/filelibrary/Technical%20Manuals/SD5055_4_1_BREEAM_Offices_2008.pdf (accessed on January 3, 2020).
California Green Building Standards Code 2016. https://up.codes/viewer/california/ca-green-code-2016.
CASBEE.
CASBEE for Buildings (New Construction) Technical Manual
.
2014
.
Available online: http://www.ibec.or.jp/CASBEE/english/downloadE.htm (accessed on January 3, 2020).
City and County of San Francisco, Department of Building Inspection
“Implementation of Green Building Regulations.”
Cliff,
N.
1993
.
“Dominance statistics: Ordinal analyses to answer ordinal questions.”
Psychological Bulletin
,
114
(
3
):
494
–
509
,
Fleiss,
J. L.
1981
.
Statistical methods for rates and proportions
(
2nd ed.)
New York
:
Wiley
.
Fuerst,
F.
2009
.
“Building momentum: an analysis of investment trends in LEED and Energy Star-certified properties.”
Journal of Retail and Leisure Property
,
8
(
4
):
285
–
297
,
Garde,
A.
2018
.
Form-Based Codes for Downtown Redevelopment: Insights from Southern California
.
Journal of Planning Education and Research
,
38
(
2
):
198
–
210
,
Green Star.
Technical Manual v3.2
.
2017
.
https://12253-console.memberconnex.com/Attachment?Action=Download&Attachment_id=1347Available online: (accessed on January 3, 2020).
Greer,
F.,
Chittick,
J.,
Jackson,
E.,
Mack,
J.,
Shortlidge,
M.,
Grubert,
E.
2019
.
“Energy and water efficiency in LEED: How well are LEED points linked to climate outcomes?”
Energy and Buildings, 195
,
161
–
167
,
Haddock,
C.K.,
Rindskopf,
W.R.,
Shadish,
W.R.
1998
.
“Using odds ratios as effect sizes for meta-analysis of dichotomous data: a primer on methods and issues.”
Psychological Methods
,
3
(
3
),
339
–
353
,
Hurlbert,
S.H.
Lombardi,
C.M.
2009
.
“Final collapse of the Neyman-Pearson decision theoretic framework and rise of the neoFisherian.”
Annales Zoologici Fennici
,
46
(
5
):
311
–
349
,
Lancaster,
H.O.
1961
.
“Significance tests in discrete distributions.”
American Statistical Association
,
56
(
294
):
223
–
234
.
LEED.
LEED v4 for Building Design and Construction
.
2018
.
Available online: https://www.lorisweb.com/LEEDv4/GA/GA_READ/GA09_LEED%20v4%20BDC_01.5.18_current.pdf (accessed on January 3, 2020).
LEED-CIv2.
LEED for Commercial Interiors
.
2004
.
Available online: https://plandesignbuild.ucsd.edu/_files/leed-scorecards/MesaChildDevelopmentCenterLEEDScorecard.pdf (accessed on June 6, 2020).
LEED-CIv3.
LEED 2009 for Commercial Interiors
.
2009
.
Available online: https://www.usgbc.org/resources/leed-commercial-interiors-v2009-current-version (accessed on January 3, 2020).
LEED-CIv4.
LEED v4 for Interior Design and Construction
.
2014
.
Available online: https://www.usgbc.org/education/sessions/leed-v4-interior-design-construction-4892445 (accessed on January 3, 2020).
LEED-NCv3.
LEED-NC 2009. LEED for New Construction & Major Renovations
.
2009
.
Available online: http://www.usgbc.org/ShowFile.aspx?DocumentID=5546 (accessed on January 3, 2020).
Ma,
J.
Cheng,
J.C.P.
2016
.
“Data-driven study on the achievement of LEED credits using percentage of average score and association rule analysis.”
Building and Environment
98
(
MAR
):
121
–
132
,
Picquelle,
S.J.
Mier,
K.L.
2011
.
“A practical guide to statistical methods for comparing means from two-stage sampling.”
Fisheries Research
,
107
(
1–3
):
1
–
13
,
Pushkar,
S.
2018
.
“Sacrificial pseudoreplication in LEED Cross-Certification Strategy Assessment: Sampling Structures.”
Sustainability
,
10
(
5
):
1353
,
Pushkar,
S.
Verbitsky,
O.
2018a
.
“LEED-NCV3 Silver and Gold certified projects in the US: an observational study.”
Journal of Green Building
,
13
(
2
),
67
–
83
,
Pushkar,
S.
Verbitsky,
O.
2018b
.
“Strategies for LEED certified projects: the building layer versus the service layer.”
Canadian Journal of Civil Engineering
,
45
(
12
):
1065
–
1072
,
Pushkar,
S.
Verbitsky,
O.
2019a
.
“LEED-NC 2009 Silver to Gold certified projects in the US in 2012–2017: An appropriate statistical analysis.”
Journal of Green Building
,
14
(
2
),
83
–
107
.
Pushkar,
S.
Verbitsky,
O.
2019b
.
“Silver and Gold LEED Commercial Interiors: certified projects.”
Journal of Green Building
,
14
(
3
),
95
–
113
.
Romano,
J.,
Corragio,
J.,
Skowronek,
J.
2006
.
Appropriate statistics for ordinal level data: Should we really be using t-test and Cohen’s d for evaluating group differences on the NSSE and other surveys?
In
Appropriate statistics for ordinal level data: Should we really be using t-test and Cohen’s d for evaluating group differences on the NSSE and other surveys? Proceedings of the Annual Meeting of the Florida Association of Institutional Research
,
Cocoa Beach, FL, USA
,
1–3 February 2006
;
Florida Association for Institutional Research
:
Cocoa Beach, FL, USA
,
2006
;
pp.
1
–
33
.
Routledge,
R.D.
1992
.
“Resolving the conflict over Fisher’s exact test.”
The Canadian Journal of Statistics
,
2
(
Jun
):
201
–
209
.
Shin,
MH.,
Kim,
HY.,
Gu,
D.,
Kim,
H.
2017
.
“LEED, Its Efficacy and Fallacy in a Regional Context-An Urban Heat Island Case in California.”
Sustainability
,
9
(
9
):
1674
.
Simcoe,
T.
Toffel,
MW.
2014
.
“Government green procurement spillovers: Evidence from municipal building policies in California.”
Journal of Environmental Economics and Management
,
68
(
3
):
411
–
434
,
Suzer,
O.
2015
.
“A comparative review of environmental concern prioritization: LEED vs other major certification systems.”
Journal of Environmental Management
,
154
(
MAY
1
),
266
–
283
,
USGBC projects site (https://www.usgbc.org/projects) (accessed on January 10, 2020).
Wu,
P.,
Mao,
C.,
Wang,
J.,
Song,
YZ.,
Wang,
XY.
2016
.
“A decade review of the credits obtained by LEED v2.2 certified green building projects.”
Building and Environment
,
102
(
JUN
):
167
–
178
,
Wu,
P.,
Song,
YZ.,
Shou,
WC.,
Chi,
HL.,
Chong,
HY.,
Sutrisna,
M.
2017
.
“A comprehensive analysis of the credits obtained by LEED 2009 certified green buildings.”
Renewable and Sustainable Energy Reviews
,
68
(
Part 1
):
370
–
379
,
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Author notes
1. Department of Civil Engineering, Ariel University, Israel; [email protected]