1. Depth requirement can be determined by the load of the structure being raised. 2. Soils are tested by driving the pilings into the soils. 3. Concrete is tested under the load it is required to support. 4. Precured / tested concrete enables immediate leveling of structure. Most jobs are completed in 1-3 days. 5. Site cleanliness and 1-3 day job time save destruction of valuable vegitation.
Limitations:
1. Alignment is more difficult given below ground obstructions. 2. No reinforcement to prevent shifting of cylinders after installation |