The primary purpose of earthquake retrofitting is to keep your home from being displaced from its concrete foundation — making the building safer and less prone to major structural damage during an earthquake. Existing homes need to be retrofitted because our understanding of the effects of earthquakes as well as construction techniques have improved after the homes were built.
Foundation bolting is a process of attaching a house to its concrete foundation. The up-and-down and side-to-side motion of an earthquake can shake an unbolted house off its foundation.
House bolting typically means that bolts are added to improve the connections between the wooden framing members of a building and its concrete foundation. Usually this means adding bolts through the piece of wood that lies flat on top of the foundation, referred to as the sill or mudsill, into the concrete. There may be no existing bolts, or the existing bolts may be either weakened or too far apart to be strong enough for earthquake resistance.
Careful planning, placement and installation of foundation bolts are critical for good bolting strength. It is important to use the proper type of bolt corresponding to the existing conditions of the home and its foundation. The expected type of bolt load or stress is another important consideration for bolt selection.
There are various reasons for a complete foundation replacement of a house.
Some of these reasons are:
- The house has no foundation.
- The foundation is made of unreinforced masonry, such as brick, stone, etc.
- The concrete foundation is badly deteriorated.
- Faulty or poor quality materials were used in the original foundation.
A complete foundation replacement is typically done in two or more segments. For example, first the north and west foundations are replaced. Subsequently, the south and east foundations are replaced.
We provide house bolting and seismic retrofit services to single and multi-family homes, as well as apartments and commercial buildings in the entire Ventura and the nearby areas.