Today, more and more homes are built on unstable soils, like those you learned in previous chapters. Between expansive and hydro-compactable soils and subsidence, the foundations are pushed and pulled, creating motion. Every year, thousands of homeowners are faced with assessing and repairing foundation problems. Fortunately, this means that there are reliable and technical solutions.
What exactly is available and is it the right solution for your structural problems?
As the root of structural problems is soil, the first two solutions are to remove the weight of the foundation from unstable soils and place it on the bedrock or other stable soil – these solutions are called piles and propellers.
The push piles are medium-length steel shafts that are hydraulically driven into the soil through unstable surface soils until they reach the rocky bed or other layers carriers. Technicians can say that the piles have reached the bedrock by measuring the hydraulic pressure required to drive the piles into the ground until they reach the depth specified by the engineer. The weight of the house is then transferred from the unstable ground and onto the pillars through pillar supports attached to the foot of the house.
Helical piles are also sunk into the ground using hydraulics, but they are transformed into giant. screw. In fact, they are giant screws that literally support a home through the power of resistance. The weight of the house is then transferred to the pillars using the same durable steel racks.
Indications for a Piercing System:
You have an area of your foundation wall that experiences a vertical motion, such as sinking.
Your chimney does not coincide with your home
The conditions of your soil can be classified as expansive, decreasing, hydro-compactable or active
How are the batteries installed in 6 basic steps:
] Step 1: The exterior, sod and landscaping around the house are removed and set aside
Step 2: The floor is removed until the foundation of concrete foundations to be revealed
Step 3:  Robust steel beams are hydraulically driven to a solid rock or even load bearing layers.
Step 5: The weight of the house, anchored in the interior of the house. Steel supports, is carefully transferred from Step 6: After the approval of an engineer, the soil around the house is replaced and the landscaping can be returned to its original location .
There are several other options that have been used during different eras to solve the problems of foundations. The oldest method is to raise the house and replace the foundation and the newest method is to use drilling systems either on the entire perimeter of the house, or just a part. Here is a breakdown of the other methods that people used to solve the foundation problems from oldest to most recent:
Replace the Foundation:
Destroy the court and take several weeks to complete
problem reappearing (wait for the same result
The soles are still in the active zone
VERY EXPENSIVE – $ 50,000 PLUS
Concrete sub-foundation / Outsoles:
May take weeks / month
concrete can aggravate the problem
The structure can not be removed
The soles are still in the active zone
Concrete cylinders can break during the winter. and may NOT be retrieved
May require additional shims in the future
Although calibration is included in the warranty, the damage caused by resettlement and re-establishment -excavation not covered
Squar Helical piles:
Designed originally to withstand the shrouds of electric towers during high winds.
Not Designed to Support Soil Weight
Square Shafts Flex and Fold When the Weight of a Foundation Lies on
Concrete Pillars with Cable Reinforcement:
] Designed for specific soil conditions that are not present in Colorado.
The cylinders create too much friction to cross the active zone
The pillar stretches over time, allowing a moment after the pillars are in place
Additional wiring to the outside cylinders can increase the friction of the skin of the cylinder
Finally, the drilling systems:
the penetration of any type of steel battery.
Allow the possibility of low impact indoor installations (typically, with much less collateral damage than the outside approach)
Provide a lifetime warranty, tradable for the first 25 years as the Vertical movement in the drilled areas will not occur
Perform work in most soil conditions for a lifetime greater than 100 years
Push Push MAI:
Lift a structure to make it flatter and more flat
Allow the possibility of closing or narrowing existing cracks in brick, stucco, plasterboard or other interior or exterior finishes
Allow realignment of doors or windows sticking NE PAS:
To ensure that final conditions will be perfectly level or leveled
To provide lateral (horizontal) restraint at foundation curvature
Am improve water-tightness or lower the level of moisture in a subsoil
Helical Piers WILL:
Perform his work in most soil conditions for a lifetime greater than 100 years
To permit the installation as a system of preconstruction (or new construction) bearings in poor soils
To permit a horizontal installation as a "tie-in" system -back "to provide resistance against poor soils. with some rare exceptions, require an exterior excavation, with destruction of surrounding landscaping or paving
Provide a lifetime warranty, transferable for the first 25 years, as vertical movement in the drilled areas will not occur not
Helical piles MAI:
Allow the possibility of lifting a structure to a flatter and flatter level
Allows the possibility of closing or narrowing existing cracks in brick, stucco, plate plaster or other interior or exterior finishes
To permit the realignment of sticky doors or windows and the straightening of inclined chimneys.
Helical Beams NO:
To guarantee that the conditions will be met
To envisage a lateral (horizontal) restraint on a curved foundation wall (except where it is specifically installed in "tie-back" mode )
Improving sealing or lowering the level of moisture in a basement