Settlement Mitigation of Large Manufacturing Operation Using Low Mobility Grout-PPT Presentation

PPT Presentation

Pdf Summary

A large manufacturing facility experienced settlement after a 2010 methane-detection alert. Brick veneer cracking prompted ventilation modifications and the start of settlement monitoring. To limit cost and disruption, the owner considered alternatives including rigid support and micropiles, then selected low-mobility grouting.<br /><br />An initial 2015 program treated eight spread footings at depths of 15–24 feet, placing 84 cubic yards of grout. Following those results, a larger 2020 program supported footings across the western half of the structure, selected center footings, and portions of the slab on grade. It installed 142 grout locations at depths of 9–24 feet, using 374 cubic yards of grout. The work also included a test section beneath the truck-loading route.<br /><br />The approach minimized disruption, and the manufacturing operation never had to shut down. No methane-release issues were reported. Settlement slowed to 0.15 inches of movement over 2.5 years.

Keywords

manufacturing facility

methane detection

settlement monitoring

brick veneer cracking

ventilation modifications

low-mobility grouting

spread footings

micropiles

slab on grade

settlement stabilization