Canadian Dam Association Bulletin - Summer 2016 - 30

FD-83-3, respectively. These depths correspond to the top of the overburden (the original ground surface). The initially assumed subsurface conditions consisted of 20 m of sand overburden characterized by shear wave velocities that varied linearly from 100 m/s at the surface to 300 m/s at a depth of 20 m. 6.2 Summary of Analysis Two software programs were used in the analysis, Strata (version alpha, revision 3999) by Kottke & Rathje (2011) and SeismoSignal (version 5.1.2) by Seismosoft slr (2013). Strata was used to conduct equivalent linear site response analyses and Seismosoft was used to analyze the ground motion records. Earthquake ground motions are quite random in nature and there exist numerous parameters that can be used to quantify them. To compare the measured and calculated ground motions at the surface Brookfield Renewable Global Footprint 7 Countries 2,100 250+ 87% Employees Facilities $25B Hydroelectric Assets One of the largest publicly traded, pure-play renewable energy businesses in the world Committed to excelleence in health, safety, security and environment Active partner in the communities near our assets Strong focus on hydroelectricity Proud of our operations in Canada 33 3 Hyydr droe roe oele lectri lect le ctric ct riic Wi Wind n FFaaci cililiti itities es F rm Fa rmss 500+ + Em mpl p oyyee eess A sustainable presence 30 814779_Brookfield.indd 1 Enou En ough ou ghh cle lean ean e er en ergy gy to po gy powe werr we 58 58 80, 0,00 0, 0 0 hou o seeho hold ldds several parameters were used, including the PGA, I h (Arias intensity), Sa(T=0.1 s), Sa(T=0.2 s) and Sa(T=0.5 s). These parameters were assigned a degree of importance (high, medium of low) based on their potential to affect the behavior of the dam. The PGA of a ground motion record is a relatively random parameter that has little potential to affect the behavior of a dam on its own, thus the PGA was assigned a low importance. The Arias intensity was assigned high importance because it is indicative of the potential for deformation irrespective of the frequency content. The values of Sa(T=0.1 s) and Sa(T=0.2 s) were considered of medium importance and the value of Sa(T=0.5 s) was considered of low importance. The use of the spectral values includes the effect of frequency. The parameters of low, medium and high importance were assigned factors of 1, 3 and 10, respectively. Coefficients were then calculated for each parameter as its factor divided by the sum of the factors. For each parameter, a difference factor, D, was defined as the absolute difference between the measured and calculated values, divided by the measured value, times the coefficient and divided by the sum of the coefficients. The sum of the D values is a weighted variable that can be used to assess the similarity of the measured and calculated ground motions at the surface. A value of zero indicates that the PGA, I h and Sa values of the two motions are identical and the value increases as these parameters diverge. An initial analysis run (Run 1) was conducted using the initially assumed subsurface conditions described above. The parameters of the resulting ground motion at the surface are given in Table 4. This run has a D value of 0.722 mainly because the I h of the calculated motion (0.163 m/s) is about twice as great as the I h of the measured motion (0.082 m/s). A D value of 0.722 was not considered acceptable and additional runs were conducted. For each run, the depth of overburden and/or the shear wave velocity profile were adjusted in a rational manner to reduce the D value. View past issues of the CDA Bulletin 27/05/16 2:07 AMonline at www.naylornetwork.com/cda-NXT/ http://www.brookfieldrenewable.com http://www.brookfieldrenewable.com http://www.naylornetwork.com/cda-NXT/

Table of Contents for the Digital Edition of Canadian Dam Association Bulletin - Summer 2016

BOARD OF DIRECTORS
NEW WEBSITE LEADS CDA RECENT NON-TECHNICAL INNOVATIONS
ICOLD NEWS
THE FRANKLIN FALLS DAM: DESIGN, CONSTRUCTION AND RESPONSE TO THE 1982 GAZA (NEW HAMPSHIRE) EARTHQUAKE
CDA CONFERENCE 2016
CDA OFFERS ASSISTANCE AFTER BRAZIL DAM DISASTER
DAM SAFETY REVIEWS TECHNICAL BULLETIN
TIME TO RENEW YOUR MEMBERSHIP
NOTICE OF AGM
BUYERS’ GUIDE AND TRADE LIST
CALL FOR PAPERS
Canadian Dam Association Bulletin - Summer 2016 - cover1
Canadian Dam Association Bulletin - Summer 2016 - cover2
Canadian Dam Association Bulletin - Summer 2016 - 3
Canadian Dam Association Bulletin - Summer 2016 - 4
Canadian Dam Association Bulletin - Summer 2016 - 5
Canadian Dam Association Bulletin - Summer 2016 - 6
Canadian Dam Association Bulletin - Summer 2016 - BOARD OF DIRECTORS
Canadian Dam Association Bulletin - Summer 2016 - 8
Canadian Dam Association Bulletin - Summer 2016 - NEW WEBSITE LEADS CDA RECENT NON-TECHNICAL INNOVATIONS
Canadian Dam Association Bulletin - Summer 2016 - 10
Canadian Dam Association Bulletin - Summer 2016 - 11
Canadian Dam Association Bulletin - Summer 2016 - ICOLD NEWS
Canadian Dam Association Bulletin - Summer 2016 - 13
Canadian Dam Association Bulletin - Summer 2016 - THE FRANKLIN FALLS DAM: DESIGN, CONSTRUCTION AND RESPONSE TO THE 1982 GAZA (NEW HAMPSHIRE) EARTHQUAKE
Canadian Dam Association Bulletin - Summer 2016 - 15
Canadian Dam Association Bulletin - Summer 2016 - 16
Canadian Dam Association Bulletin - Summer 2016 - 17
Canadian Dam Association Bulletin - Summer 2016 - 18
Canadian Dam Association Bulletin - Summer 2016 - 19
Canadian Dam Association Bulletin - Summer 2016 - 20
Canadian Dam Association Bulletin - Summer 2016 - 21
Canadian Dam Association Bulletin - Summer 2016 - 22
Canadian Dam Association Bulletin - Summer 2016 - 23
Canadian Dam Association Bulletin - Summer 2016 - 24
Canadian Dam Association Bulletin - Summer 2016 - 25
Canadian Dam Association Bulletin - Summer 2016 - 26
Canadian Dam Association Bulletin - Summer 2016 - 27
Canadian Dam Association Bulletin - Summer 2016 - 28
Canadian Dam Association Bulletin - Summer 2016 - 29
Canadian Dam Association Bulletin - Summer 2016 - 30
Canadian Dam Association Bulletin - Summer 2016 - 31
Canadian Dam Association Bulletin - Summer 2016 - 32
Canadian Dam Association Bulletin - Summer 2016 - 33
Canadian Dam Association Bulletin - Summer 2016 - CDA CONFERENCE 2016
Canadian Dam Association Bulletin - Summer 2016 - 35
Canadian Dam Association Bulletin - Summer 2016 - 36
Canadian Dam Association Bulletin - Summer 2016 - 37
Canadian Dam Association Bulletin - Summer 2016 - 38
Canadian Dam Association Bulletin - Summer 2016 - 39
Canadian Dam Association Bulletin - Summer 2016 - 40
Canadian Dam Association Bulletin - Summer 2016 - 41
Canadian Dam Association Bulletin - Summer 2016 - 42
Canadian Dam Association Bulletin - Summer 2016 - 43
Canadian Dam Association Bulletin - Summer 2016 - 44
Canadian Dam Association Bulletin - Summer 2016 - 45
Canadian Dam Association Bulletin - Summer 2016 - 46
Canadian Dam Association Bulletin - Summer 2016 - CDA OFFERS ASSISTANCE AFTER BRAZIL DAM DISASTER
Canadian Dam Association Bulletin - Summer 2016 - 48
Canadian Dam Association Bulletin - Summer 2016 - 49
Canadian Dam Association Bulletin - Summer 2016 - 50
Canadian Dam Association Bulletin - Summer 2016 - DAM SAFETY REVIEWS TECHNICAL BULLETIN
Canadian Dam Association Bulletin - Summer 2016 - 52
Canadian Dam Association Bulletin - Summer 2016 - NOTICE OF AGM
Canadian Dam Association Bulletin - Summer 2016 - BUYERS’ GUIDE AND TRADE LIST
Canadian Dam Association Bulletin - Summer 2016 - 55
Canadian Dam Association Bulletin - Summer 2016 - CALL FOR PAPERS
Canadian Dam Association Bulletin - Summer 2016 - 57
Canadian Dam Association Bulletin - Summer 2016 - 58
Canadian Dam Association Bulletin - Summer 2016 - cover3
Canadian Dam Association Bulletin - Summer 2016 - cover4
Canadian Dam Association Bulletin - Summer 2016 - outsert1
Canadian Dam Association Bulletin - Summer 2016 - outsert2
Canadian Dam Association Bulletin - Summer 2016 - outsert3
Canadian Dam Association Bulletin - Summer 2016 - outsert4
Canadian Dam Association Bulletin - Summer 2016 - outsert5
Canadian Dam Association Bulletin - Summer 2016 - outsert6
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