No Strings Attached!
On April 28, 2015 Parisi Construction was the first company in the state of Wisconsin to utilize stringless technology to pour curb and gutter. Parisi Construction recently invested in the technology, and used it to pour 4,200 lineal feet of curb and gutter in a subdivision on the west side of Madison.
Our staff worked with Gomaco and Positioning Solutions Company to set up the machine, build the machine control model, and establish the control points on the project. The pour was done using a new Gomaco 3600 equipped with GPS and laser vertical control augmentation. GPS antennas on the Gomaco 3600 are used to track the machines movement and calculate its position and heading. The lasers augment the GPS and provide the required vertical accuracy. In addition, a GPS rover is utilized to check alignment and grade.
On this project in Madison, City Engineering requested a short run of traditional stringline to verify the accuracy of placement. The rover showed we were within one hundredth of a foot of the proposed line and grade. By the time they hit the end of the stringline, everyone was comfortable continuing stringless.
The benefits of using this technology and equipment include the time and cost savings of survey staking, setting pins, and setting stringline. The additional mobility and freedom of movement without the stringline presents the ability to do tight radiuses and curves in any roadway, parking lot, or island.
Parisi Construction is proud of this accomplishment and we look forward to expanding our use of stringless technology on our future projects.