What is Seismic Retrofit?
Seismic retrofit is the modification of existing structures to make them become more resistant toward earthquake damages and ground motion. Earthquake retrofitting is done to help make your home a safer place to live and reduce your financial property cost when an earthquake may strike. According to the Federal Emergency Management Agency, the average annual cost of earthquake losses in the United States is approximately $4.4 billion, among which California damage accounted for $3.3 billion, among which California accounted for most of the cost.
Why Do You Need To Have Your Property Retrofitted?
Living in active seismic zones, you must always take into consideration the safety of your family, your employees, business, and property value. Since earthquake activities are unpredictable, retrofitting your house or business buildings is not only a smart decision but also a cost-effective approach for your property insurance budget.
Regional Facts and Statistical Data in Los Angeles
- There are approximately 13,500 soft-story buildings and 1000+ concrete buildings in the area that need seismic strengthening.
- The disastrous 1994 Northridge earthquake cost $20 billion in damages and $49 billion in economic loss.
- It is 97% likely that a 6.7 magnitude or larger earthquake will strike Southern California in the next 30 years.
Regional Facts and Statistical Data in San Francisco
- 2000 commercial and multi-family residential buildings need structural improvement.
- The most recent major earthquake in San Francisco occurred on August 2014 in Napa with a magnitude of 6.0. The quake led to $250 million in damage.
- The U.S. Geological Survey predicts that the chance of an earthquake, 7.0 magnitude or higher, occurring again in the Bay area in the next 30 years is 99%
What is the process for Seismic and Earthquake retrofitting?
There are several stages within a seismic retrofit project. In some cases, depending on your property structures, you might need to go through all the stages, while others you may not. Penhall recognizes that each building has its own unique features. As a result, in the beginning, we provide free property assessment for any incoming inquiries to help you better understand your retrofit needs. However, Engineer Phase is necessary in any seismic retrofit project to meet the ordinance requirements. During engineering, our team will perform building measurement, non-destructive testing, and CAD design to create a plan to be submitted for city approval. Construction Phase is not applicable to all projects. Below is an estimated timeline for Penhall Seismic service:
How Much Does Seismic Retrofit Usually Cost?
The cost to seismically retrofit a building varies considerably based on a variety of factors. Some of these factors include the size of the property, the required retrofit solution, and the company you choose to work with.
However, costs typically fall into 3 categories:
- Engineering Fees generally range from $6,000 – $10,000.
- Construction Costs based on retrofit solutions range from $5,000 – $10,000.
- Permitting Fees are based on a combination of property specifications and cost of retrofit in Los Angeles; and based on a percentage of the construction costs in San Francisco.
Penhall will price-match and verify lowest construction bid (legitimate and comparable quote must be provided).
Why Should You Choose Penhall for Your Earthquake Retrofitting Project?
Overall, any buildings that are more than 40 years old are subject to seismic retrofitting. It is crucial for you to fully understand the process and be proactive in selecting a qualified construction team.
Penhall is your top choice for engineering and construction services for every type of seismic retrofitting.
- We bring with us 60 years of experience in the construction industry and other services that might be needed for your project, such as: demolition, coring, concrete scanning, etc.
- We provide assistance in various aspects of a seismic retrofit project including: engineering, design build, financing and tenant support.
- We are proud to be a certified applicator of advanced composite materials, often referred to as fiber reinforced polymer (FRP).
- Our team includes certified engineers, project designers, project managers, and 40 dedicated GPR analysts for non-destructive testing.
- We are present in 8 locations in California (Over 40 nationally).
- We are your single, one-stop shop for design and build.
Our team members are experts of all building teams and concrete solutions. While we possess the resources and capabilities to take on any size contract, we consider no job too specialized, too large or too small. We believe that every project deserves our utmost attention to detail and commitment to client satisfaction.