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Foundation Systems and Services
Farrell specializes in proven, design-build, Ground Improvement Support and Deep Foundation Pile solutions. Farrell also provides design-build excavation support solutions, foundation design peer review, and specialty ground improvement and pile design services. Proven Foundation Solutions include:
Diameter/Depth
ACP/DDP
14, 16, 18, 24 in dia
20 – 100 ft deep
ACC/DDC
14, 16, 18, 24 in dia
10 – 80 ft deep
CAP/CSC
18, 24, 30 in dia
6 – 32 ft deep
VSC/VDC
18 – 48 in dia
14 – 58 ft deep
RIC/RVC
5 – 8 ft dia
6 – 48 ft deep
DPP/MP/HP
4 – 14 in dia
10 – 150 ft deep
Compatible Soils
ACP/DDP
Sand (SP, SM, SC)
Silt (ML, MH)
Clay (CL, CH)
Contaminated Soil – DDP
Undocumented Fill
ACC/DDC
Contaminated Soil – DDP
Sand (SP, SM, SC)
Silt (ML, MH)
Clay (CL, CH)
Undocumented Fill
CAP/CSC
Silt (ML, MH)
Clay (CL, CH)
Clayey Sand (SC)
Silty Sand (SM)
Undocumented Fill
VSC/VDC
Poorly Graded Sand (SP)
Silty Sand (SM)
Silt (ML)
Clayey Sand (SC)
Undocumented Fill
RIC/RVC
Sand (SP, SM, SC)
Sand – Gravel mixtures
Silt (ML, MH)
Undocumented Fill
Contaminated Soil
DPP/MP/HP
Sand (SP, SM, SC)
Silt (ML, MH)
Clay (CL, CH)
Bedrock
Contaminated Soil HP
Bearing Capacity Range (ASD)
ACP/DDP
100 – 800+ kips
ACC/DDC
4,000 – 14,000 psf
CAP/CSC
4,000 – 9,000 psf
VSC/VDC
4,000 – 8,000 psf
RIC/RVC
2,000 – 8,000 psf
DPP/MP/HP
20 – 250+ kips
Key Advantages
ACP/DDP
Deep pile with ground improvement – DDP
High capacity
No vibration
Low spoil – DDP
Steel reinforcement
CBC compliant
ACC/DDC
High stiffness & High capacity – Type 2
No vibration
Low spoil – DDC
Uplift-tension hold-down
Well defined concrete / grout column
Liquefaction mitigation
CAP/CSC
Cost effective support
Readily available material – CAP
LEED opportunity
Re-use onsite soil – CSC
High bearing capacity
Uplift-tension hold-down
VSC/VDC
Liquefaction mitigation
Densification
CBC/SP117 compliant
Use for confinement
Low spoil
No casing
RIC/RVC
Highly cost effective
Liquefaction mitigation
Densification
Use for confinement
Fast install process
No spoil
DPP/MP/HP
Small equipment for tight access
Ideal for repair/retrofit
Minimal site impact
Low spoil – HP
No vibrations
CBC Compliant
Key Considerations
ACP/DDP
Deep pile
Engineered grout
Low spoil – DDP
Concrete cleanup
Flat stable pad
Pile connections
ACC/DDC
Impermeable
Rigid inclusion
Gravel cushion
Grout with low spoil
Concrete cleanup
Flat stable pad
CAP/CSC
Vibration system
Requires confinement in liquefiable layers
Spoil haul-off – CAP
Semi-rigid inclusion
Casing
Moderate depth limit
VSC/VDC
Vibration system
Requires confinement in liquefiable layers
Soft clay need grout
Big operation for small site
No work next to buildings
RIC/RVC
Vibrations at
30 ft
Pad grading
Import needed
Shallow depth – RIC
High noise – RIC
DPP/MP/HP
High material cost
Steel below water
Pile connections
Need access
Comparable To
ACP/DDP
Auger pressure grouted piles
CFA Piles
Driven piles
Concrete piers
Torque/pipe piles
ACC/DDC
Rigid inclusions
Concrete piers
Driven piles
Geopier®
Soil mix columns
CAP/CSC
Overex/replace
Concrete piers
Driven piles
Geopier®
Soil mix columns
VSC/VDC
Overex/replace
Concrete piers
Driven piles
Geopier®
Soil mix columns
RIC/RVC
Deep dynamic compaction
Overex/replace
Geopier®
Resonant compaction
DPP/MP/HP
Torque piles
Pipe piles
Concrete piers
Driven piles
Soil nails/tiebacks
