E. V Richardson

This study is a continuation of the work to determine the point of incipient failure and other hydraulic characteristics of riprap for providing criteria for design of stable ripraps in flood control channels. Two sizes riprap materials were tested. One material had a d = 1.0 in. and the other had a d₅₀ = 2.0 in. Both riprap sizes had the ETL 1110-2-120 gradation recommended by WES.