Field assessment of a Vacuum Microtunneling (VMT) system for on-grade pipeline installations

- We studied cost, productivity, and emissions of an on-grade sewer project.
- A total of three segments totaling 240 m (785 ft) were examined.
- Results revealed cost savings of with VMT starts at 3 m depth.
- VMT productivity was 7.92 m/h (25.89 ft/h).
- VMT emissions are 35% of open-cut.