seismic compliance of electrical distribution
TRANSCRIPT
Seismic Compliance ofElectrical Distribution & Control2006 IBC & ASCE/SEI 7-05
Philip J. Caldwell North American Engineering
Square D/Schneider Electric North American Operating Division
Building a New Electric World
2Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
2007 CBC
Seismic Shift
3Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
ASCE 7-05 by Reference in 2006 IBC
2007 CBC – New Basis of Seismic Design
4Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Drivers of Shift
Role of Site Effects
5Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Paradigm Shift Causes - Site Effects
1985 - Mexico City• Site Effects – Double Resonance
• No damage for large parts of city
• Damage to buildings 5 stories or more than 30 was slight
• Buildings in 5 to 20 story range were extensively damaged -“double resonance”
Collapsed HospitalPhoto by: Mehmet Celebi, USGS Menlo Park
6Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Paradigm Shift Causes - Site Effects
1985 - Mexico City• Site Effects – Double Resonance
• No damage for large parts of city
• Damage to buildings 5 stories or more than 30 was slight
• Buildings in 5 to 20 story range were extensively damaged -“double resonance”
Collapsed HospitalPhoto by: Mehmet Celebi, USGS Menlo Park
7Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Paradigm Shift Causes - Site Effects
1985 - Mexico City• Site Effects – Double Resonance
• No damage for large parts of city
• Damage to buildings 5 stories or more than 30 was slight
• Buildings in 5 to 20 story range were extensively damaged -“double resonance”
Collapsed HospitalPhoto by: Mehmet Celebi, USGS Menlo Park
8Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Paradigm Shift Causes - Site Effects Mexico City
Kramer, S.L. (1996). Geotechnical Earthquake Engineering, Prentice Hall, Inc., Upper Saddle River, New Jersey
9Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Paradigm Shift Causes - Site Effects Mexico City
Kramer, S.L. (1996). Geotechnical Earthquake Engineering, Prentice Hall, Inc., Upper Saddle River, New Jersey
10Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Paradigm Shift Causes - Site Effects Mexico CityNote 2 Sec Resonant Period
Kramer, S.L. (1996). Geotechnical Earthquake Engineering, Prentice Hall, Inc., Upper Saddle River, New Jersey
11Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Paradigm Shift Causes - Site Effects Mexico City
Telecommunications Building
Kramer, S.L. (1996). Geotechnical Earthquake Engineering, Prentice Hall, Inc., Upper Saddle River, New Jersey Photo by: Mehmet Celebi, USGS Menlo Park
12Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Paradigm Shift Causes - Site Effects Loma Prieta
Kramer, S.L. (1996). Geotechnical Earthquake Engineering, Prentice Hall, Inc., Upper Saddle River, New Jersey
13Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Paradigm Shift - 1994 NEHRP New Site Classes
Kramer, S.L. (1996). Geotechnical Earthquake Engineering, Prentice Hall, Inc., Upper Saddle River, New Jersey
14Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Paradigm Shift - Site Effects Lessons Learned
Kramer, S.L. (1996). Geotechnical Earthquake Engineering, Prentice Hall, Inc., Upper Saddle River, New Jersey
15Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Paradigm Shift - Short Period Sec Site Effect
Soil nonlinearly reduces Fa coefficient at intense levels of shaking
Kramer, S.L. (1996). Geotechnical Earthquake Engineering, Prentice Hall, Inc., Upper Saddle River, New Jersey
16Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Paradigm Shift Causes - Soil Amplification
Kramer, S.L. (1996). Geotechnical Earthquake Engineering, Prentice Hall, Inc., Upper Saddle River, New Jersey
17Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
1994 NEHRP – New Site Specific Basis for Codes
Design Basis Demand of Response Spectra Easily Adjusted for Site Class
Fa , Fv Two Factor Approach• Fa - Short Period (0.2 sec) Coefficient Adjustment• Fv - Long Period (1.0 sec) Coefficient Adjustment
Kramer, S.L. (1996). Geotechnical Earthquake Engineering, Prentice Hall, Inc., Upper Saddle River, New Jersey
18Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Test protocol compatible with building code basis
Solution for Building Code Qualification Testing
Sa = SD1 / T
T0 Ts 1.0
SD1
SDS
Period T Simple response spectrum,For use in seismic codes.
SOURCE: NEHRP, 1997
19Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Time history that envelopes a wide range of earthquakes
Solution for Building Code Qualification Testing
Random Motion30 SecondsThree Axis
Strong Motion Time History’s - Northridge Shaker Table Test MotionTrinet Wyle Labs
20Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
2006 IBC
ASCE 7-05
Seismic Overview
21Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic PerformanceOccupancy Category – Post Event Limit State Expectation
Category IVCategory I
Limit State – Collapse Prevention Limit State – ContainmentPhotos by: Philip J Caldwell
22Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic PerformanceOccupancy Category – Post Event Limit State Expectation
Category IVCategory III
Limit State – Life Safe Limit State – OperationalPhotos by: Philip J Caldwell
23Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic PerformanceOccupancy Category – Post Event Limit State Expectation• Contents can change occupancy category
Category IVCategory II
Limit State – Collapse Prevention Limit State – OperationalPhotos by: Philip J Caldwell
24Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic PerformanceCode Plus ?
Photo by: Philip J Caldwell
25Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic PerformanceSite Specific Seismicity
Increasing Seismicity
Seismic Design Category
A B C D E F
FEMA 450-1
26Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Site Specific Seismicity
TABLE 11.6-2 SEISMIC DESIGN CATEGORY BASED ON 1-S PERIOD RESPONSE ACCELERATION PARAMETER
Occupancy Category Value of SD1 I or II III IV
SD1 ≤ 0.067 A A A 0.067 ≤ SD1 < 0.133 B B C 0.133 ≤ SD1 < 0.20 C C D 0.20 ≤ SD1 D D D SD1 ≥ 0.75 E E F
Increasing Seismicity
Seismicity x Occupancy Category = Seismic Design Category
Prescriptive Code Driven Seismic Performance
FEMA 450-1
27Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
2006 IBC
ASCE 7-05
Equipment Qualification
Options
28Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
ASCE 7-05 Chapter 13 for Electrical & Mechanical
2007 CBC – New Basis of Seismic Design
ASCE/SEI 7-05
29Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
2006 IBC / ASCE 7-05 Compliance Requirements
Equipment Seismic Qualification
ASCE/SEI 7-05Illustration by Square D
30Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
2006 IBC / ASCE 7-05 Compliance Requirements
Equipment Seismic Qualification
Illustration by: Square D Company ASCE/SEI 7-05
31Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
2006 IBC / ASCE 7-05 Compliance Requirements
Equipment Seismic Qualification
Photo by: Philip Caldwell ASCE/SEI 7-05
32Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
2006 IBC / ASCE 7-05 Compliance Requirements
Equipment Seismic Qualification
Photo by: EQE / ABS Consulting ASCE/SEI 7-05
33Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Analysis
Code Allowed Equipment Qualification Methods
34Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Analysis
Code Allowed Equipment Qualification Methods
35Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Analysis
Code Allowed Equipment Qualification Methods
Illustration by Schneider Electric
36Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Analysis validated through testing
Code Allowed Equipment Qualification Methods
Post Shake Table Test (Multiple)
Photo by: Philip CaldwellIllustration by Schneider Electric
37Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Qualification by Shake Table Test
38Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
< 2000 – No standard, ad-hoc testing protocol by labs
Solution Building Code Qualification Testing
p
p
p
DSpp W
hz
IR
SaF ⎟
⎠⎞
⎜⎝⎛ +
⎟⎟⎠
⎞⎜⎜⎝
⎛= 21
40.
Code basis is staticlateral push over force
Transform
Code IntentMissing Shake table test
dynamic demand
UUT’s
VerticalBase Input
Front-to-BackBase Input
Side-to-SideBase Input
ShakeTable
UUT ResponseAccelerometers
Shake TableControl
Accelerometer
Illustration by Schneider Electric
39Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Protocol by national body of subject matter experts• Academia• Practice• Industry• Test facilities
Solution for Building Code Qualification Testing
40Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
( )( )⎟⎠⎞
⎜⎝⎛ +
⎟⎟⎠
⎞⎜⎜⎝
⎛=
hz
IR
aSA
p
p
pDS 2140. ( ) ( )
⎟⎟⎠
⎞⎜⎜⎝
⎛+
⎟⎟⎠
⎞⎜⎜⎝
⎛=
r
x
p
p
pa
hh
IR
aCA 31
Transform lateral force into dynamic test parameters:
p
p
p
DSpp W
hz
IR
SaF ⎟
⎠⎞
⎜⎝⎛ +
⎟⎟⎠
⎞⎜⎜⎝
⎛= 21
40.p
r
x
p
papp W
hh
RICa
F ⎟⎟⎠
⎞⎜⎜⎝
⎛+= 31
NEHRP Equation UBC/CBC Equation
Building HeightFactor
SeismicFactor
Response ModificationFactor
Component AmplificationFactor
RRS Formulation – Lateral Force Construct
IBC Lateral Force 1997 UBC Lateral Force
41Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Protocol accounts for above grade installation• Independent of building/structure type
RRS Formulation – Building Height
USGS - Northridge Report
1994 Northridge Earthquake - Instrumented Building LA County Olive View-UCLA Medical Center
Sylmar, California
42Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Transform lateral force into dynamic test parameters:
p
p
p
DSpp W
hz
IR
SaF ⎟
⎠⎞
⎜⎝⎛ +
⎟⎟⎠
⎞⎜⎜⎝
⎛= 21
40.p
r
x
p
papp W
hh
RICa
F ⎟⎟⎠
⎞⎜⎜⎝
⎛+= 31
NEHRP Equation UBC/CBC Equation
( )( )⎟⎠⎞
⎜⎝⎛ +
⎟⎟⎠
⎞⎜⎜⎝
⎛=
hz
IR
aSA
p
p
pDS 2140 . ( ) ( )
⎟⎟⎠
⎞⎜⎜⎝
⎛+
⎟⎟⎠
⎞⎜⎜⎝
⎛=
r
x
p
p
pa
hh
IR
aCA 311 1
1 or 2.5 1 or 2.5
⎟⎠⎞
⎜⎝⎛ +=
hzSA DSFLX 21
⎟⎠⎞
⎜⎝⎛ +=
hzSA DSRIG 2140.
⎟⎟⎠
⎞⎜⎜⎝
⎛+=
r
xaFLX h
hCA 3152.
⎟⎟⎠
⎞⎜⎜⎝
⎛+=
r
xaRIG h
hCA 31
DSFLXMAX SA 61.= aFLXMAX CA 4=
aRIGMAX CA 3=
RRS Formulation
NEHRP Equation UBC/CBC EquationIBC Lateral Force 1997 UBC Lateral Force
43Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Classical “broad banded”spectral envelope
StrongPortion
ZPAPortion
TableLimited
ARIG
AFLX
RRS Formulation
44Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Classical “broad banded”spectral envelope
ARIG
AFLX
fFLX f0 fRIG
RRS Formulation
45Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Frequency variables related to NEHRP general design earthquake response spectrum curve
100
52011
D
DS
S SS
TTf ===
.
Ratio of SD1 / SDS on Site Class D ≈ 0.6
Hz..
3860
50 ==f
RRS Formulation
FEMA 450-1
46Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Frequency variables related to NEHRP general design earthquake response spectrum curve
( )( ) Hz...
31250160
1=
+=FLXf
Ratio of SD1 / SDS on Site Class D ≈ 0.6
⎟⎠⎞
⎜⎝⎛ +
=⎟⎠⎞
⎜⎝⎛ +
=
hzS
S
hzT
fD
DS
S
FLX
25012501
1
1 ..
RRS Formulation
FEMA 450-1
47Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Hz.. 3337162 =×=RIGf
Frequency variables related to NEHRP general design earthquake response spectrum curve
Rigid components defined as:fn > 16.7 Hz
Wanted fRIG an octave > 16.7 Hz
RRS Formulation
FEMA 450-1
48Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Code Intent Specified as Dynamic Test
AFLX
ARIG
fFLX f0 fRIG
AC156 RRS
ICC ES AC156
49Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Building code based needs• Consistent and conservative dynamic test
Solution for Building Code Qualification Testing
Conservative time historyrandom broadband
Response spectra envelopes sitebased on NEHRP
30 seconds
Wyle Labs ICC ES AC156
50Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Account for post event pass/fail criteria• Ip = 1.0 Structure and anchorage intact
Solution for Building Code Qualification Testing
Anchorage Intact
Acceptable Ductile
Behavior of Base Channel
Base Channel to Structure Connection
Intact
Structure Frame Intact
Photo by: Philip Caldwell
51Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Account for post event pass/fail criteria• Ip = 1.5 Post test functionality verified
Solution for Building Code Qualification Testing
Photo by: Philip Caldwell
52Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
ICC ES AC156 now referenced in ASCE/SEI 7-05
Solution for Building Code Qualification Testing
ASCE/SEI 7-05
53Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Widely used by industry and academia
Solution for Building Code Qualification Testing
Photo by: Philip Caldwell
54Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific ComplianceBuilding code based test protocol needs• Based on site specific design parameters
http://earthquake.usgs.gov
55Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific ComplianceNew Madrid Seismic Zone Example
Photo by: Philip Caldwell
56Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific ComplianceNew Madrid Seismic Zone Example
Google Earth
N 36.58904
N 36.58904
New Madrid County Jail
636 Powell Avenue
New Madrid, MO 63869
57Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific ComplianceNew Madrid Seismic Zone Example• N 36.58904 W 89.52864 ?????
http://earthquake.usgs.gov
260˚
260˚
270˚
270˚
280˚
280˚
290˚
290˚
30˚ 30˚
40˚ 40˚
50˚ 50˚
4
4
8
8
8
8
8
12
12
12
12
12
12
16
16
16
16
16
16
16
20
20
20
2020
20
20
20
40
40
40
40
40
40
120
160
048
12162024283236406080
100120160240320400600
0.2 sec Spectral Acceleration (%g) with 2% Probability of Exceedance in 50 Years(site: NEHRP B-C boundary)
U. S. Geological SurveyJune 1996
58Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific ComplianceNew Madrid Seismic Zone Example• URL for USGS site specific design data
quake.usgs.gov/research/hazmahttp://earthquake.usgs.gov/research/hazmaps/design/
59Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific ComplianceNew Madrid Seismic Zone Example
http://earthquake.usgs.gov/research/hazmaps/design/
Site Location Lat / Lon
60Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific ComplianceNew Madrid Seismic Zone Example
http://earthquake.usgs.gov/research/hazmaps/design/
Ss
61Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific ComplianceNew Madrid Seismic Zone Example
http://earthquake.usgs.gov/research/hazmaps/design/
MS a sS F S= ×
62Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific ComplianceNew Madrid Seismic Zone Example
http://earthquake.usgs.gov/research/hazmaps/design/
23DS MS
aS S= ×
63Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific ComplianceNew Madrid Seismic Zone Example
Schneider Electric Certificate Example
64Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific ComplianceNew Madrid Seismic Zone Example
Schneider Electric Certificate Example
DSS
65Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific ComplianceNew Madrid Seismic Zone Example
Schneider Electric Example
DSS
66Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific CompliancePort Cape Girardeau Example
Photo by: Philip Caldwell
67Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific CompliancePort Cape Girardeau Example• 19 North Water Street• 2003 IBC – Grade Level
Schneider Electric Certificate Example
DSS
68Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific ComplianceSaint Louis Example – Old Courthouse
Photo by: Philip Caldwell
69Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific ComplianceSaint Louis Example – Old Courthouse• 2003 IBC Grade Level Site Class D
Schneider Electric Certificate Example
DSS
70Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific Compliance2003 IBC Grade Level Site Class D
SDS = 2.26 g’s
Street Atlas USA USGS 1996 NEHRP 0.2 sec Map
71Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific Compliance2003 IBC Grade Level Site Class D
SDS = 1.24 g’s
Street Atlas USA USGS 1996 NEHRP 0.2 sec Map
72Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific Compliance2003 IBC Grade Level Site Class D
SDS = 0.52 g’s
Street Atlas USA USGS 1996 NEHRP 0.2 sec Map
73Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Examples of Site Specific Compliance2003 IBC Grade Level Site Class D
SDS = 2.26 g’s
SDS = 1.24 g’s
SDS = 0.52 g’s
Street Atlas USA USGS 1996 NEHRP 0.2 sec Map
74Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic PerformanceSeismic Compliance Specification for Electrical Equipment
Standard Used for Qualification
Reference Building Code
for Qualification
Product Family Qualification Covers
Schneider Electric Certificate Example
75Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic PerformanceSeismic Compliance Specification for Electrical Equipment
Geographic Qualificationor
Site Specific
Bldg Height Limitations
Site Demand / Tested Capacity
Post Test Operational
Verified
Schneider Electric Certificate Example
76Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic Performance
Seismic Compliance Specification for Electrical Equipment
DSS
Schneider Electric Certificate Example
77Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic PerformanceSeismic Compliance Specification for Electrical Equipment
Google Earth
78Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic PerformanceSeismic Compliance Specification for Electrical Equipment
N 37.695627
W 121.936232
11950 Dublin Canyon RdPleasanton, CA 94588
Google Earth
79Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic PerformanceSeismic Compliance Specification for Electrical Equipment
Site Location Lat / Lon
http://earthquake.usgs.gov/research/hazmaps/design/
80Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic Performance
Seismic Compliance Specification for Electrical Equipment
Sshttp://earthquake.usgs.gov/research/hazmaps/design/
81Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic Performance
Seismic Compliance Specification for Electrical Equipment
MS a sS F S= ×
http://earthquake.usgs.gov/research/hazmaps/design/
82Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic Performance
Seismic Compliance Specification for Electrical Equipment
23DS MS
aS S= ×
http://earthquake.usgs.gov/research/hazmaps/design/
83Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic PerformanceSeismic Compliance Specification for Electrical Equipment
Certificate # 19191
Class 8839 Enclosed Drives
The Schneider Electric equipment referenced in this certificate has been qualified to the site-specific seismic requirements of the listed model building code and/or standard. Thiscertification is based on tri-axial shake table test results conducted in accordance with theAC156 test protocol3 (Acceptance Criteria for Seismic Qualification Testing of NonstructuralComponents):
International Building Code (IBC), 2006 ICC Edition
Product Platform: Class 8839 Enclosed DrivesProduct Description: S-Flex wall mount 1-20 hp
Site-Specific Location1: 11950 Dublin Canyon Road88549AC,notnasaelP
)02639.121-,36596.73(-gnoL/taLSUCode Requirement2: FP / WP = 2.11 G's, (SDS = 1.32)Equipment Capacity3: FP / WP = 4.51 G's, (SDS = 2.82)Importance Factor4: IP = 1.5Installation Restrictions5: None - Ground level or roof level installations permitted
Plot of Tested Equipment Capacity Vs. Code Acceleration Demand
Schneider Electric Certificate Example
84Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic Performance
Seismic Compliance Specification for Electrical Equipment
p p
Site-Specific Location1: 11950 Dublin Canyon Road88549AC,notnasaelP
)02639.121-,36596.73(-gnoL/taLSUCode Requirement2: FP / WP = 2.11 G's, (SDS = 1.32)Equipment Capacity3: FP / WP = 4.51 G's, (SDS = 2.82)Importance Factor4: IP = 1.5Installation Restrictions5: None - Ground level or roof level installations permitted
DSS
Schneider Electric Certificate Example
85Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Prescriptive Code Driven Seismic Performance
Seismic Compliance Specification for Electrical EquipmentPlot of Tested Equipment Capacity Vs. Code Acceleration Demand
DSS
Schneider Electric Certificate Example
86Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Cost of building contents exceeds building costSQUG – Lack of or improper anchorage cause of failure
Drivers of Change - Earthquake Lessons Learned
Photo by: EQE / ABS Consulting
87Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Cost of building contents exceeds building costSQUG – Lack of or improper anchorage cause of failure
Drivers of Change - Earthquake Lessons Learned
Photo by: EQE / ABS Consulting
88Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Follow manufacturers anchorage instruction
Drivers of Change - Earthquake Lessons Learned
Illustration by Square D
89Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Seismic restraint design is a challenging structural issue
Drivers of Change - Earthquake Lessons Learned
Photo by: Mason Industries
90Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Cost of mitigation can pay back 4 to 1
Drivers of Change - Earthquake Lessons Learned
Illustration from: FEMA 413
91Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
FEMA / ASCE / VISCMA Sponsored Installers Guides
Drivers of Change - Earthquake Lessons Learned
FEMA 412 FEMA 413 FEMA 414
92Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Mitigation is ongoing for life of facility
Drivers of Change - Earthquake Lessons Learned
Photo by: Philip Caldwell
93Philip CaldwellSeismic Requirements for Electrical Equipment
Bay Area IEEE Seminar – March 5, 2008
Questions?