Geotechnical Construction
Subsurface construction demands strict adherence to quality standards to meet technical performance criteria, whether related to diverting groundwater, supporting structural foundations, or preventing seepage in levees, or dam construction.
Magnus Pacific’s dependable and quality performance results in consistently successful geotechnical construction projects.
These projects include the following types:
- Slurry Cutoff Walls including soil-bentonite, cement bentonite, and soil-cement bentonite
- Deep Soil-Mixed (DSM) Cutoff Walls
- Permeable Reactive Barriers (PRB)
- Biopolymer Collection Trenches
- Soil Stabilization & Ground Improvement
IBWC Urban Levee Remediation, Presidio, Texas
IBWC Presidio Urban Levee
- Construction of 676,200 square foot soil-bentonite cutoff wall
- Installation of 2,033 linear feet of landside Toe-Drain
- Placement of 10,000 cubic yards of Rip Rap
- Placement of 64,594 square yards of Flex-Base surfacing
- Rehabilitation of 17 irrigation gate wells and control structures
- Raising the existing levee and placement of embankment fill
- Placement of 120,000 cubic yards of Embankment Fill
- Installation of 25,500 linear feet of landside Toe-Drain
- Construction of a 205,200 square foot soil-bentonite cutoff wall
- Placement of 17,500 cubic yards of rip-rap
- Placement of 54,000 square yards of Flex-Base surfacing
- Rehabilitation of 15 irrigation gate wells and control structures
Natomas Levee Improvement, Sacramento, California
Natomas Cross Canal Levee Improvement Program
- Project of the Year Award 2010, American Society of Civil Engineers (ASCE)
- Construction of 1,505,500 square feet of soil-bentonite cutoff wall
- Excavation to a depth of 75-feet below the levee crown
- Performed construction in close proximity to a canal and overhead power lines
- Construction performed on an accelerated schedule
- Blended excavated soil with import sand to meet SB backfill specs
American River Sites L8 & R8, Sacramento, California
American River Sites L8 & R8
- Construction of two cement-bentonite (CB) walls to close gaps between pre-existing cutoff walls on both banks of the American River
- Highly compressed schedule; 24-hour operations
- Controlled and detoured bike traffic along American River Bike Trail
- Accommodated underground and and overhead utilities
Castle Rock CB Wall, Castle Rock, Washington
Slurry Walls at Castle Rock
- Site preparation and levee degradation
- Construction of 65,000 square foot cement-bentonite cutoff wall
- Levee restoration and installation of rip-rap slope protection
- Performed work with limited access adjacent to residences
