RiverCities Transit Center - Construction Pile Driving

RiverCities Transit Center - Construction Pile Driving

The contractor for the RiverCities Transit Center project, JH Kelly, LLC will start construction of the transit center building foundation which requires driving steel piles into the ground up to 90-feet deep. The contractor will mobilize the pile driving equipment and piles on Monday, April 15, 2019 and Tuesday, April 16, 2019.

The pile installation is scheduled to start on Wednesday, April 17, 2019 and be complete by Friday, April 19, 2019. Some pile driving may continue on Monday, April 22, 2019 as well. The working hours for the pile driving are 8:00 a.m. to 5:00 p.m.

During this operation, the level of construction noise will increase and the levels are expected to be higher than normal construction noise. In addition, vibrations will be felt in the vicinity of the transit center site.

Pile Driving Fact Sheet - RiverCities Transit Center

1. What is pile driving and why is it necessary?
Pile driving is a common method of constructing building foundation in pour soil conditions. To support the building foundation, a steel pipe is driven into the ground beneath the foundation until it reaches a specified level of resistance. For this project, 31 steel piles will be driven approximately 90-feet into the ground.

2. How are piles driven?
The piles are driven by a large air hammer mounted on a crane.

3. How long will pile driving take?
The pile installation will start on April 17, 2019. It is anticipated that the pile driving will take three days or through April 19, 2019. The number of piles installed per day will vary based on the soil condition. For the steel piles, typically 10 piles per day can be installed. Some additional pile driving may continue on April 22, 2019 depending on the progress the previous week.

4. What are the contractor’s working days and hours for pile driving?
Pile driving will take place Monday through Friday, 8:00 a.m. to 5:00 p.m.

5. Where will pile driving take place?
Pile driving will occur at 1135 12th Ave, the RiverCities transit center site.

6. What is unique about this project that requires pile driving?
The poor soil conditions at this site require that the building foundation be supported with piles.

7. How noisy will the pile driving be?
The pile driver will emit a hammering noise while in operation. From 50-feet away, the noise level will range from 90 to 100 decibels, equivalent to chain saw or jack hammering noise.

8. Is the pile driving noise in compliance with the city ordinance?
The pile driving activities have been limited to hours that will have the least impact to residents. Noise generated from other construction activities are allowed as long as the hours of operation occur from 7:00 a.m. to 6:00 p.m.

9. Will there be vibration from the pile driving?
The hammering from pile driving may cause the ground to vibrate near the construction zone. Ground vibrations are monitored to ensure no damage will occur. Vibration monitors will be installed at the adjacent building located near the site. The equipment used will provide real time information regarding vibration levels. If the pile driving operation is approaching the thresholds, the operation will stop and appropriate adjustments will be made. A baseline survey will be completed prior to construction to establish key monitoring point.

10. Who should I call if I have questions?
During City of Longview business hours 7:00 a.m. to 5:30 p.m. Monday through Thursday, please call Ivona Kininmonth 360-442-5208, project engineer for the City of Longview. Or 8:00 a.m. to 5:00 p.m. Monday through Friday, please call Mark Warren with OTAK Engineers at 360-737-9613.