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Vibration Source

 

 

Max Crack Response12

Structure Location

Frame

Foundation

Stories

Wall
Ext.

Wall
Int.

Obs. Time
(weeks)

Crack
Location

Sensor
Type

Crack
Width

Weather

Vibration

Max PPV

Max Air
Pressure

Comparison

Vibration/Max Weather11

 

(µm)

Season
(µm)

Max
(µm)

Daily
(µm)

(µm)

(mm/s)

(dB)

Additional Case Study Summaries

Naples, FL 2

                                   

Universal, IN 2

                                   

Singleton, Australia

                                   

   - Crack 2

w

s

1

br

dw

16

e-br

strain gauge

2500

 

 

2200

 

84

20.8

145

0-p

0.038

Naples, FL

                                   

   - Crack 5

bk

s

1

s

dw

26

e-s

ec

 

 

 

137

137

5.3

2.616

0-p

0.038

   - Crack 7

bk

s

1

s

dw

26

i-dw

ec

 

 

 

200

200

11.6

2.616

0-p

0.058

   - Crack 9

bk

s

1

s

dw

26

e-s

ec

 

 

 

273

273

3.1

2.616

0-p

0.011

Pineville, NC

w

s

1

br

dw

26.8

i-dw

ec

 

 

 

248

86

3.6

2.667

125

0-p

0.014

Trenton, MI

                                   

   - Welch

w

b

2

al/br

dw

6.1

i-dw

ec

     

511

511

7.4

1.727

106

p-p

0.015

   - Marian Manor

br

s

1

br

br

6.1

i-br

ec

     

138

138

2.9

4.191

112

p-p

0.021

 

Coal Mining

Evansville, IN (EV)

w1

wo2

1

w/br3

dw4

0.2

i5-dw4-jt6

lvdt8

 

 

 

 

22

12.0

p-p9

0.41010

lvdt

58

12.0

0.160

Universal, IN (UN)

w

b2

2

al/br3

dw

36.0

i-dw

ec8

75

75

13.0

20.0

p-p

0.173

Kittanning, PA (KI)

t1

b

1

al3

?

0.7

i-dw

ec

700

24

16

0.9

8.1

119

0-p9

0.038

Farmington, NM (NM)

?

?

1

ad3

dw

5.0

e5-s

ec

800

9

25

4.2

3.3

117

0-p

0.168

Francisco, IN 1 (FN1)

w

b

1

al

pl4

0.4

e-bk-f6

ec

500

12

9

0.3

5.8

117

0-p

0.025

Francisco, IN 2 (FN2)

w

b

1

al

pl

0.3

i-pl

ec

1200

52

25

13.6

7.6

126

0-p

0.262

Wales, UK (UK)

bk1

s2

1

s3

p

1.0

i-p

lvdt

>45

Aggregate Quarry Blasting

Miami, FL (MF)

bk

s

1

s

dw

8.0

e-s

ec

 

75

46.0

17.7

0-p

0.613

Ft Lauderdale, FL (FL)

bk

s

1

s

dw

0.3

e-s

ec

72

0.7

11.2

p-p

0.010

i-jt

ec

44

0.9

11.2

p-p

0.021

Franklin, WI (FW)

bk

wo

1

st3

dw

>52.0

i-dw

ec

500

300

43

4.0

2.3

p-p

0.013

i-dw

ec

300

132

9.0

2.3

0.030

i-dw-c6

ec

300

134

7.0

2.3

0.023

Southbury, CT (SC)

w

wo

2

w3

dw

6.0

i-dw-c

ec

211

146

2.9

9.0

132

0-p

0.014

i-dw

ec

55

29

1.8

9.0

0.033

Albuquerque, NM (AM)

w

s

1

br

dw

5.0

e-br

ec

95

38

13.4

7.3

122

p-p

0.141

Franklin, KY (FK)

w

wo

1

br

dw

16.0

i-dw

ec

308

2.9

4.3

p-p

0.009

i-bk

ec

189

11.1

4.3

0.059

e-br

ec

685

17.1

4.3

0.025

Glen Allen, VA (GV)

w

cs2

2

w

dw

28.0

e-br-f6

ec

185

63

6.8

1.5

p-p

0.036

w

cs

1

br

dw

i-dw

ec

382

80

29.2

2.4

0.076

Construction Equipment & Blasting

McAllen, TX (MT)

w

s

1

br

dw

>12.0

i-dw-jt

lvdt

900

75.0

25.0

0-p

0.083

i-wd-b jt

lvdt

500

83.0

25.0

0.166

i-dw

lvdt

500

83.0

25.0

0.166

i-fp7

lvdt

975

125.0

25.0

0.128

Las Vegas, NV (LV)

w

s

1

s

dw

28.0

e-s(2)

lvdt

335

272

11.4

11.4

0-p

0.034

i-dw(3)

lvdt

109

32

1.8

11.4

0.017

e-s(5)

lvdt

394

254

2.5

11.4

0.006

Washington D.C. (DC)

w

½ b

4

s

pl

12.0

i-pl

ec

141

28

7.1

4.1

0-p

0.050

i-w

ec

287

33

1.4

4.1

0.005

e-s

ec

220

160

4.0

4.1

0.018

Henderson, NV (HV)

w

s

1

s

dw

4.6

e-s

ec

100

75

2.8

1.1

0-p

0.028

w

s

2

s

dw

e-s

ec

62

38

6.1

11.4

0.098

Albuquerque, NM (AN)

w

s

1+

s

dw

11.0

es

ec

394

263

124.0

9.3

p-p

0.315

Without Vibration

Evanston, IL (IE)

w

b

3

w

pl

12.0

i-pl

lvdt

 

25

i-pl

lvdt

10

i-pl

lvdt

250

Minneapolis, MN (MM)

bk

b

3

s

dw?

17.0

i-dw?

lvdt

1000

217

100

e-sb

lvdt

107

57


1

w=wood, t=trailer, bk=block

5

i=interior, e=exterior

9

p-p = peak to peak, 0-p = zero to peak

2

wo=walkout basement, b=basement, s=slab

6

jt=dw joint, c-ceiling, f=foundation

10

Direct from Table EV-1 assuming maximum ppv of 12 mm/s

3

w=wood, br=brick, s=stucco, al=aluminum

7

fp=fire place

11

Max Weather = maximum of Season, Max or Daily response

4

dw=drywall, pl=plaster & lath, p=plaster

8

lvdt = lvdt sensor, ec = eddy current sensor

12

Max = maximum of frontal or maximum observed