S-3.1.01, r. 1 - Dam Safety Regulation

Section 29 Disposition versions

2014-11-13

29. Calculations regarding the structural and foundation seismic stability of a dam must be done on the basis of a return period of 2,500 years and by using either of the following peak ground acceleration values:

(1)  the value which, under Schedule I, corresponds to the seismic zone in which the dam is located;

(2)  the value which, with regard to the location of the dam, may be determined from the seismic data established by the Geological Survey of Canada.

O.C. 300-2002, s. 29; O.C. 402-2011, s. 5; O.C. 901-2014, s. 7.

2012-09-01

29. Realistic and conservative methods and assumptions based on good practice must be used in the calculations demonstrating the structural and foundation stability of a dam in earthquake conditions. Calculations must be based on the full supply level and be accompanied by the opinion of the engineer in charge on the liquefaction potential of the dam and its foundation and the data on which that opinion is based.

The seismic coefficients (k) to be applied in the pseudostatic analysis vary according to the seismic zone in which the dam is located and are indicated on the map appearing in Schedule I. The coefficients may also be determined, for each dam site, from peak ground acceleration data established by the Geological Survey of Canada for a return period of 2,500 years.

O.C. 300-2002, s. 29; O.C. 402-2011, s. 5.