SRSS (Square Root of the Sum of Squares)
SRSS (Square Root of the Sum of Squares) : A technique used in earthquake engineering analysis and design (introduced by Rosenblueth, 1951), wherein the maximum contributions of different modes to a variable of interest, determined from a response spectrum or spectra, are combined by squaring them, adding, and taking the square root of the sum. The result gives an estimate of how the modal responses, whose time of maximum occurrence is not known, combine to produce the maximum total response. See also the biography of Emilio Rosenblueth in Howell (2003)
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