Any structure that is likely to experience seismic activity requires a significant amount of design and safety considerations, often in areas that you might not be aware of.
Examining the natural foundations that a building rests upon is crucial, and the importance of soil analysis in seismic safety and building design is often misunderstood or overlooked by the general public.
How Soil Structure Affects Building Design
The structure of the soil on which your building is placed will have a huge impact on how it responds during an earthquake. Seismic activity causes soil motion, and the specific properties of the soil itself will affect how significant that motion is – and the knock-on influence this will have on the motion of the structure above.
To successfully design a structure with seismic activity in mind, several important characteristics should be carefully considered, from foundation building to continuous load dissipation.
A comprehensive analysis of the soil will inform almost every one of these decisions, which further highlights the importance of soil analysis in seismic safety and building design.
- Strength and Stiffness: Earthquake-resistant buildings need to have a high level of vertical and lateral strength and stiffness to withstand seismic activity.
- Foundation Stability: A stable foundation is essential, but the specific design of the foundation will depend on the characteristics of the ground that it is built.
- Load Distribution: For a structure to survive a significant amount of motion, its weight needs to be shared across multiple load points, otherwise the foundation can split.
- Regularity: When a building moves laterally, it needs to shift equally on all sides. Irregularity in the structure will create weaknesses where damage will occur during motion.
- Redundancies: This refers to the inclusion of additional safety precautions in case some fail. In high-risk areas, redundancy and “over-strengthening” are considered incredibly important, if not essential, factors to achieving true earthquake readiness.
Although the best time to ensure a building is going to be as protected as possible during an earthquake is in the design phase, there is a lot that you can do to retroactively improve the seismic safety of your property.
Repairs and replacements to faulty, unsuitable, or damaged foundations can undo the destruction that might already have occurred, and retrofitting can help to prevent it. Retrofitting options like bracing and bolting (as championed by California’s Earthquake Brace + Bolt program) are designed to stop the building from sliding off its foundation when the soil below is in motion.
This is particularly important when the soil structure is likely to cause more significant motion issues for the building.
Foundation Repair Los Angeles
If you’re living in Los Angeles, then you will be highly aware of the high risk that earthquakes and seismic activity present for your property. Whether you have already experienced significant damage, or you’re hoping to prevent potential damage in the future, it is always a good idea to look into repair, replacement, and retrofitting options.
Seismic Safety is the most highly-respected and reliable retrofit and repair company in Southern California, and they specialize in preparing LA homes to withstand the dangers of earthquakes.