Common Foundation Problems
- Foundation SettlementDownward movement of foundations caused by weak, compressible or poorly compacted soils.
- Differential SettlementUneven movement between different sections of a structure, leading to distortion and additional structural stress.
- Voids Beneath FoundationsUnderground cavities or loss of support beneath foundation elements.
- Reduced Soil Bearing CapacityInsufficient ground strength to support existing structural and operational loads.
- Poorly Compacted FillSettlement caused by inadequately compacted fill beneath industrial and infrastructure facilities.
- Water Infiltration and WashoutGround movement caused by leaking utilities, groundwater changes or the loss of fine soil particles.
- Static and Dynamic LoadingProgressive settlement under heavy equipment, crane operations, machinery vibration and repeated transport loads.
What Causes Foundation Settlement?
Foundation settlement may result from weak or compressible soil, poorly compacted fill, groundwater changes, washout of fine particles, underground voids or increased structural loads.
In industrial and infrastructure facilities, settlement may also develop under repeated dynamic loading, heavy machinery, crane operations or changes in site conditions caused by nearby excavation and construction.
In industrial and infrastructure facilities, settlement may also develop under repeated dynamic loading, heavy machinery, crane operations or changes in site conditions caused by nearby excavation and construction.
- Weak or compressible soil
- Water infiltration and washout
- Increased structural loads
- Poorly compacted fill
- Underground voids
- Repeated dynamic loading
- Nearby excavation or construction
Signs of Foundation Settlement
- Cracks in structural walls, slabs or foundation elements
- Uneven or sloping industrial floors
- Misalignment of machinery, columns or crane rails
- Gaps between structural elements
- Localised sinking around foundations
- Repeated movement at expansion joints
- Uneven loading or vibration of equipment
- Progressive deformation of adjacent pavements or slabs
Engineering Solutions for Foundation Repair
POLYJET provides injection-based foundation repair and settlement stabilisation for industrial, commercial and infrastructure facilities.
Our methods are used to stabilise weak soil beneath foundations, fill underground voids, improve load-bearing capacity and, where technically feasible, correct differential settlement.
Each repair solution is developed on the basis of a site inspection, geotechnical data, structural loads and engineering calculations. Injection pressure, volume and lifting response are monitored throughout the work to reduce risk and achieve controlled stabilisation.
Our methods are used to stabilise weak soil beneath foundations, fill underground voids, improve load-bearing capacity and, where technically feasible, correct differential settlement.
Each repair solution is developed on the basis of a site inspection, geotechnical data, structural loads and engineering calculations. Injection pressure, volume and lifting response are monitored throughout the work to reduce risk and achieve controlled stabilisation.
When Injection-Based Repair May Be Suitable
- When excavation would disrupt active operations
- When access for heavy equipment is limited
- When voids or weak soils are identified beneath the foundation
- When controlled foundation lifting is required
- When rapid return to operation is important
- When traditional underpinning would be excessively disruptive
- When the building or facility must remain operational during repair
Foundation Repair Solutions
How Foundation Repair Works
Site inspection and damage assessment
Visual inspection, level survey and identification of settlement patterns.
Geotechnical and Structural Assessment
Evaluation of soil conditions, bearing capacity, foundation loads and possible voids.
Repair Design and Injection Planning
Selection of injection materials, injection points, target depths and control parameters.
Injection, Soil Stabilisation and Lifting
Controlled injection beneath the foundation with continuous monitoring of pressure and movement.
Verification and Quality Control
Final level survey, load verification and confirmation of stabilisation performance.
Advantages of Injection-Based Foundation Repair
- Minimal excavation or demolition
- Controlled and precise lifting
- Reduced downtime
- Compact equipment for restricted-access sites
- Rapid improvement in ground support
- Lower disruption than traditional underpinning
- Suitable for active industrial facilities
Injection vs Traditional Foundation Repair
Related Geotechnical Services
Depending on ground conditions, structural loads and the cause of settlement, foundation repair may be combined with other POLYJET engineering services.
Foundation Repair Case Studies
Frequently Asked Questions
Foundation settlement may be caused by weak or compressible soil, poorly compacted fill, underground voids, groundwater changes, washout or increased structural loads. Repeated dynamic loading from cranes, machinery and transport can also contribute to settlement.
Common signs include structural cracks, uneven floors, misaligned equipment, gaps between structural elements and localised sinking around the foundation. Progressive movement should be assessed before it affects structural performance or operations.
Injection materials are introduced beneath the foundation to fill voids, strengthen weak soil and improve ground support. Where conditions allow, controlled injection can also lift settled foundation sections.
Injection methods are often suitable where excavation is difficult, access is limited or the facility must remain operational. Traditional underpinning may still be required where major structural strengthening or deep foundation replacement is needed.
Yes. Uneven or differential settlement can create additional stresses in foundations, walls, columns and slabs. If movement continues, it may affect structural alignment, equipment operation and long-term serviceability.
Injection-based stabilisation may be used for industrial buildings, warehouses, crane foundations, airport infrastructure, port facilities, commercial buildings and other structures affected by weak ground or loss of support.
The solution is selected after assessing the settlement pattern, soil conditions, foundation type, structural loads and operational constraints. Geotechnical investigation and engineering calculations are used to determine whether injection, soil stabilisation, lifting or another repair method is appropriate.