Projects

Site:
Rose Bowl Stadium,
Pasadena, California

Problem:
For the renovation and expansion of new press boxes, it was discovered that a sandy gravel layer under the foundation would yield an unacceptable amount of settlement for the new structure.

Solution:
A permeation/chemical grouting system was used to solidify the sandy gravel layer into a solid mass to thwart future settlements.

Site:
Pier 45, Fisherman’s Wharf,
San Francisco, California

Problem:
This 4½ acre Pier was supported partly on wood pilings and partly on dredged fill. A thorough geotechnical investigation after the Loma Prieta earthquake showed that the fill material, which extended to a depth of 30 feet was liquefiable.

Solution:
Compaction grouting was selected by the Geotechnical Engineer and FEMA to densify the dredged fill material for the mitigation of soil liquefaction.

Site:
Kokoro Theatre/Assisted Living Facility, San Francisco, California

Problem:
For this Historic Landmark the planned conversion from theatre to an assisted living facility required certain excavations under and in close proximity to the existing foundations. The new added loads would have initiated certain settlements that could not be permitted for the structure.

Solution:
Although there is more than one way to approach and resolve such construction problems, chemical grouting was chosen to mitigate the anticipated problem. A pure chemical – permeation system was selected and proved to be successful in mitigating these problems.

Site:
Office Building in Reno, Nevada

Problem:
For this multi-office two story building, settlements were observed very shortly after its completion. Within two years there was a maximum differential settlement of five inches. It was believed that a wedge of man-made fill, with a maximum depth of thirty feet, was causing the settlements. A number of helical pier foundations had been installed, but settlements continued.

Solution:
A compaction grouting system was successfully employed to densify all of the fill wedge, as well as to lift and level the settled areas.

Site:
Power Plant Seismic Upgrade, Orting, Washington

Problem:
When this Steam Plant seismic upgrade was explored, it was determined that certain layers of soil underlying the plant were liquefiable. The circa 1920 building was supported on shallow footings in some parts and slab-on-grade in others.

Solution:
To abate the soil liquefaction potential, compaction grouting was selected for the interior and exterior of the building. Post-grout testing of the soils exhibited the degree of improvement that was required.

Site:
New Mixed-Use High-Rise Building in Downtown
San Francisco

Problem:
For this soon-to-be constructed high-rise office/residential building in downtown San Francisco, the main frame of the building was to be supported on piles, but the soils were determined to be liquefiable to about 35 feet below street level.

Solution:
To abate this problem, soil densification using compaction grouting techniques were employed. The whole site was grouted using a grid of five-foot spacing for the injections.