Geotechnical Engineering

DHARM

N-GEO\OBJ.PM5 900

900 GEOTECHNICAL ENGINEERING

281. (a) Mass-spring-dashpot model
     (b) Elastic half-space theory


282. Spring constant; damping ratio.


283. Shear modulus; Poisson’s ratio.


284. (a) Body waves (b) Surface waves


285. False.


286. (a) Compression or P-waves
     (b) Shear or S-waves.


287. Coefficient of elastic uniform compression.


288. Spring constant


289. Field vibration test.


290. The square root of the area.


291. (a) Reciprocating machines (b) Impact ma-
     chines


292. Block type foundation.


293. (a) Avoidance of resonance
     (b) Amplitudes being limited to permissi-
     ble limits.
     294. True.
     295. Unbalanced inertial forces.
     296. Primary; secondary.
     297. True
     298. Impact
     299. The coefficient of restitution.
     300. Two
     301. The weight, the base area
     302. (a) active isolation (b) passive isolution
     303. Force isolation, amplitude isolation.
     304. Trench.
     305. (a) cork (b) felt (c) Rubber or steel springs
     306. tuning