|  | Soldier Pile Wall | Bored Pile Wall | Soilmix/Slurry Wall | 
| Advantages | Soldier pile and lagging walls are the most inexpensive systems compared to other retaining walls. They are also very easy and fast to construct | Low cost and speed of construction for temporary and permanent retaining walls and soil support   | Excellent resistance to contaminated groundwater. They have abilityto adapt to ground movements such as earthquakes | 
| Methodology | Constructed using piles timber infill panels (timber, steel or concrete) | Series of bored piles installed relatively close together with shotcrete arches | Steel or precast concrete elements placed in fluid soilmix / slurry | 
| Construction | Establishment | 50-60T self erecting hydraulic drilling rigs and handling crane | 50-60T self erecting hydraulic drilling rigs, handling crane and concrete pumps | 50T crane + grab / CSM, handling crane / grout plant with screw feed silos, high pressure pumps | 
| Piling productivity | 16m deep - 300mm square piles @ 18No/day | 16m deep - 600dia @ 4No/day in soft material including a 3m soft rock socket depth. Detailed production rates | 16m deep by 800mm wide @ 20-50m3/day of completed wall per rig  per day | 
| Materials to site | Concrete, reinforcement cages, steel or precast concrete panels | Concrete, reinforcement cages | Cement, bentonite, steel or precast concrete panels | 
| Work face access | Plant & Materials delivery | Plant & Materials delivery | Plant, materials and pipeline delivery of slurry | 
| Noise | Yes, if driven sections | Machine only | Machine only | 
| Vibration | Yes, if driven sections | No | No | 
| Spoil | Dependant on installation method | 100% nett volume | 30%-80% Nett volume | 
| Product | Wall Movement | Ground unsupported allowing relaxation prior placement of panels and backfilling Stiffness depends on structural section and backfill compaction | Ground unsupported allowing relaxation prior to concrete Finished product stiff | Ground supported with stiffness dependant on steel section. Precast panels can increase stiffness. | 
| Watertightness | Permeable with no groundwater control below excavation. Seepages long term | Permeable until shotcrete in place with no groundwater control below. Seepages long term | Good temporary performance due to replacement with CB slurry but some seepages | 
| Connections | Numerous connection options dependant on materials used | Drilled and grouted bars into piles, shear and bending capacity possible | Welded to steel sections, shear & bending capacity possible. | 
| Durability | Conventional concrete in the ground design or sacrificial steel thickness given long term seepage potential | Conventional concrete in ground design | Sacrificial thickness of steel and internal lining wall for long-term groundwater seepage | 
| Load Capacity | Capacity can be enhanced by increasing the length of piles. | Capacity can be enhanced by increasing the length of some piles. | Capacity limited by penetration of steel beams |