There are different types of foundation. A few you may have in your home are:
Block Wall Foundation
With any lateral movement a Block Wall or Brick Foundation is likely to buckle. It already has gaps in the joints and the mortar breaks down over time. We will replace a block wall foundation with a new poured foundation and add extra reinforcement to prevent a collapse in the event of a major earthquake.
Post & Pier Foundation
Some homes built with this type of foundation, only accounted for a gravity load. A lot of times, there is nothing holding this system together, besides gravity, and the "Piers" or footings in the ground are too shallow, and there are too few of them. We can add connections to the floor joists/beams and pour new piers to help reinforce your home.
Homes built with stone foundations are similar to the block wall foundation. They deteriorate over time and don't have a deep enough footing to stop any settling or movement of the home. They are also very likely to fail in the event of a major earthquake.
In engineering, a foundation is the element of a structure which connects it to the ground, and transfers loads from the structure to the ground. Foundations are generally considered either shallow or deep. Foundation engineering is the application of soil mechanics and rock mechanics in the design of foundation elements of structures.
Foundations provide the structure's stability from the ground:
- To distribute the weight of the structure over a large area in order to avoid overloading the underlying soil (possibly causing unequal settlement).
- To anchor the structure against natural forces including earthquakes, floods, frost heaves, tornadoes and wind.
- To provide a level surface for construction.
- To anchor the structure deeply into the ground, increasing its stability and preventing overloading.
- To prevent lateral movements of the supported structure (in some cases).
Requirements of a good foundation
The design and the construction of a well-performing foundation must possess some basic requirements that must not be ignored. They are:
- The design and the construction of the foundation is done such that it can sustain as well as transmit the dead and the imposed loads to the soil. This transfer has to be carried out without resulting in any form of settlement that can result in any form of stability issues for the structure.
- Differential settlements can be avoided by having a rigid base for the foundation. These issues are more pronounced in areas where the superimposed loads are not uniform in nature.
- Based on the soil and area it is recommended to have a deeper foundation so that it can guard any form of damage or distress. These are mainly caused due to the problem of shrinkage and swelling because of temperature changes.
- The location of the foundation chosen must be an area that is not affected or influenced by future works or factors.
Foundations are designed to have an adequate load capacity depending on the type of subsoil/rock supporting the foundation by a geotechnical engineer, and the footing itself may be designed structurally by a structural engineer. The primary design concerns are settlement and bearing capacity. When considering settlement, total settlement and differential settlement is normally considered. Differential settlement is when one part of a foundation settles more than another part. This can cause problems to the structure which the foundation is supporting. Expansive clay soils can also cause problems.
Ways OMEGA Structural, Inc.
We provide foundation inspections for homes & apartment buildings to homeowners building owners and realtors.
Free inspection for homeowners.
Realtors $150 Fee
Methods for Repairing Foundations:
1. Jack and Lift
When regions of the home are bending or not level, we can jack and lift to improve floor evenness.
2. Sister Foundations
A new foundation is put in along the inside of the present foundation, and then bolted into the existing.
3. House Bolting
Bolts added along mud sill to prevent home from sliding off of your foundation in the event of major earthquake.
4. Concrete Foundation Repair
Many homeowners or realtors aren’t aware of the possibility that their home’s foundation might contain a structural problem. Whether it is a crack on your exterior walls or foundation walls, we have the knowledge to recognize the problem and solution and the skills to repair it. If you are a home owner and have any doubts, feel free to contact us. Our inspectors are highly trained to analyze your foundation and inform you on what is needed.
5. Foundation Underpinning
Foundation underpinning is a reparation process that reinforces foundations that have been destabilized for a range of reasons. In the process of underpinning, the area underneath the load of the foundation is repaired or strengthened. Underpinning comes in many forms and suits different kinds of repair tasks. In order to make the right choice, it is necessary to comprehend the structure of the foundation, the maintenances which are required, and what can cause the foundation to be damaged.
6. Foundation Replacement
When the current foundation is no longer supportive, it can be removed and replaced with a new one. The house will be shored securely (Temporarily add structures to support the load of the home). This will allow the removal of the foundation without damaging the house. There is no need to actually elevate the house off its foundation. The old foundation is removed. A trench is made to accommodate the new deeper footing. The old mudsill is normally replaced with new, larger treated lumber to allow installation of appropriate foundation bolts.
Rebar is installed in the new trench elevated above the soil with concrete spacers. Wooden forms are built to contain the concrete. Concrete is poured, and after concrete reaches proper strength, the wooden forms are removed. Framing anchors are installed to attach the new blocking to the new mudsill. The stucco or siding at the foundation area may need to be patched and painted to match the rest of the exterior.
Caissons or in some cases called piers, are created by auguring a deep hole into the ground, and then filling it with concrete. Steel reinforcements are sometimes utilized for a portion of the length of the caisson. Caissons are drilled into bedrock. When caissons rest on soil, they are generally “belled” at the bottom to spread the load over a wider area. Special drilling bits are used to remove the soil for these “belled caissons”. It is a form of deep foundation that is constructed above ground level, then sunk to the required level by excavating or dredging material from within the caisson.
You may qualify for a FREE INSPECTION if you are a HOMEOWNER!! Call us for more details.
License A#84559 - General B#998075