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Download basics of blasting and construction vibrations on people and structures
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Construction Vibrations Vibration Sources • • • • Blasting-explosions Construction equipment Trains-bart-street cars Air blasts • SINGLE v. CONTINUOUS VIBRATIONS Wave Types • P-WAVES (compressive) • S-WAVES (shear) • Rayleigh waves/ surface waves Units of Measurements • PPV - peak particle velocity (in/sec) Vibratory Compactor CONSTRUCTION VIBRATIONS V. BUILDING DAMAGE • Bmr ri-8507 Damage Evaluation • My house has cracks and those machines caused them!!!!!! Evaluation Problems • Human perception of vibrations • Strain levels • After the fact investigations Sidewalk Demo. Excavator Vibratory Compactor 56 Feet Vibratory Compactor 4 Feet
