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Three types of gages suitable for long-term rock deformation measurements have been developed. These gages were installed in foundation or abutment rock for mass concrete dams. Components of the gages used for indicating rock deformations are mechanical or electrical instruments. The measured results of 24 rock deformation gages having lengths ranging from 20 to 256 feet are reported. These results are used to determine (1) differential settlements beneath gravity structures, (2) deformation moduli of foundation rock, or (3) relative compression in abutment rock.
rock mechanics, measuring instruments, concrete dams, arch dams, deformation, foundations, modulus of elasticity, settlement (structural), rock (material)
Rouse, George C.
Head, Bureau of Reclamation, U. S. Dept. of the Interior, Denver, Colo
Richardson, Joe T.
Supervising structural engineer, Bureau of Reclamation, U. S. Department of the Interior, Denver, Colo
Misterek, Dewayne L.
Structural engineer, Bureau of Reclamation, U. S. Department of the Interior, Denver, Colo