02498Vibration Monitoring During Construction

VIBRATION MONITORING DURING CONSTRUCTION

PART 1 GENERAL

1.1SECTION INCLUDES

that arise from pile driving, soil compaction and other vibration-producing activities.

1.2RELATED SECTIONS Not Used

1.3REFERENCES Not Used

1.4DEFINITIONS

to relatively high magnitudes of vibration are generated from performing specific high-intensity activities, such as pile driving (including driving of sheet piles), operating heavy compaction equipment, or demolition.

1.5SUBMITTALS

vibration-producing activities.

vibration (within 50 ft of the source) and the closest monitored facility as shown, and at least one seismograph on the ground at the designated facility location as shown.

vibration-producing activity and on the ground at the designated facility locations where the source of vibration is not at a discrete place, for example soil compaction.

construction activities to determine when vibration monitoring is no longer necessary.

Vibration Monitoring During Construction

for review

recommendations.

conducted within 1 year of submittal. Refer to this Section, Paragraph 2.1 A.

specialist. Refer to this Section, Paragraph 3.2 A.

specified limits.

vibrations to not exceed the specified limits

1.6VIBRATION MONITORING SPECIALIST

monitoring techniques, preparation of vibration monitoring and instrumentation plans, and interpretation and use of vibration records for similar civil and geotechnical work.

operations exceed specified project limits.

PART 2 PRODUCTS

2.1SEISMOGRAPHS

longitudinal, transverse and vertical component of Peak Particle Velocity (PPV).

inch/sec or greater.

Vibration Monitoring During Construction

a flat frequency response between 2 to 200 hz.

PART 3 EXECUTION

3.1GENERAL

Plan.

3.2MONITORING VIBRATIONS

activities for which ground motions may exceed 0.02 inch/sec at the adjacent facility.

measurements in terms of the longitudinal, transverse and vertical components of peak particle velocity.

for the recorded maximum velocity readings for each time history.

following Wednesday after the week in which the vibration measurements are taken.

7 calendar days after the final vibration measurements are taken.

construction activities to determine when vibration monitoring is no longer necessary.

producing operations approach or exceed specified project limits.

the monitored facility are greater than the limits specified in Table 1.

authorized excessive vibration remediation plan are implemented.

Vibration Monitoring During Construction

Table 1 Vibration Limits*

Vibration Source Non-Sensitive Sensitive Facilities** Facilities Steady State 0.20 in/sec 0.10 in/sec Vibrations Impact Vibrations 2.0 in/sec 1.0 in/sec

*In terms of the peak vector sum of the longitudinal, transverse and vertical vibration components. ** Defined as shown.

END OF SECTION

Vibration Monitoring During Construction