‍

The Mandatory Soft Story Program has been put into effect to avoid earthquake damage. Photo Credit: San Fransisco Department of Building Inspection (sfdbi.org)

Enhancing Seismic Safety: HJ3’s Carbon Fiber Solution for California Building Upgrades

Real-World Application

California is no stranger to seismic activity, with its many active fault lines posing a constant risk. In response, the state has implemented various programs to improve building safety, including the Mandatory Soft Story Retrofit program, which requires certain older buildings in San Francisco to be upgraded. While this program targets specific structures, many other buildings—especially those made of concrete—are not legally required to retrofit. However, forward-thinking property owners are choosing to invest in stronger, more resilient solutions.

One such owner recently turned to HJ3 for a seismic upgrade. They opted for HJ3’s Civil™ system, a high-performance carbon fiber solution known for its strength and durability. The project involved installing over 3,900 square feet of carbon fiber, along with 1,700 carbon fiber anchor dowels, strategically placed on multiple concrete walls to significantly increase their structural capacity.

The Installation Process

Before applying the carbon fiber, the walls were thoroughly cleaned to ensure proper adhesion. Holes were drilled at 2-square-foot intervals to allow even distribution of the material. The carbon fiber was then saturated with resin and carefully wrapped around the walls. Anchor dowels were inserted at precise locations to reinforce critical areas. To maintain a clean and professional look, excess fibers were feathered out radially before applying a durable topcoat that blends seamlessly with the existing structure.

Why Choose Carbon Fiber?

The entire project was completed in just 7 days, offering a fast and efficient alternative to traditional steel reinforcements. Not only did this save time and money, but it also reduced environmental impact. Unlike steel, which adds significant weight, carbon fiber weighs only four ounces per square foot, making it an ideal choice for strengthening concrete structures without compromising their integrity.

If you own a building in California and are considering seismic upgrades, HJ3’s carbon fiber technology offers a smart, sustainable, and effective solution. Contact us today to learn more about how we can help protect your property against future earthquakes.

‍

‍

HJ3's Carbon Fiber is applied to one of the walls.

‍

Carbon fiber anchor dowels are installed at 2-square-foot intervals.

seismic upgrade - dowel topcoat

 

 

Sifting Screener Machine

Sifting Screener Machine is suitable for flow operations and is an ideal equipment for continuous discharge of particles with varying proportions of size.

Sifting Screener Machine,Screener Sifting Machine,Flour Sifter Machine,Powder Sifter Machine

WUXI DEIICHEN MACHINERY PTY.,LTD , https://www.dicmachine.com