DH Glabe & Associates provides earthquake engineering services for various structures including but not limited to buildings, bridges and residential homes. Our earthquake engineers provide evaluation and design of seismic retrofit plans to update structures to the most current codes. The emphasis on the earthquake engineering profession grew significantly following the seismic events that occurred in the San Francisco Bay Area in 1989 and in Northridge, California in 1994. In a race against time, there has been an emphasis placed on building owners to ensure the safety of their building occupants in the event of a catastrophic earthquake.

Many jurisdictions have already mandated that a structural engineer evaluate existing buildings to ensure it meets seismic building codes. In cases where the structure does not meet or exceed the adopted performance and safety standards, these buildings must be retrofitted. In certain instances, standards such as the California Accidental Release Prevention Program (CalARP) have been specifically instituted to protect the public from hazardous materials in the event of an earthquake. DHG earthquake engineers help property owners to comply with all of the latest seismic building codes.

“We have worked with DH Glabe & Associates for many years. They have been sensitive to our needs and provide the expertise that helps us to be successful in meeting our clients needs. Their engineering accuracy and prompt response is a model for the industry.“

Ron Camp - Atlas Sales Co.

“DH Glabe & Associates were very professional to work with. With effective communication from start to finish, they ensured a successful project.”

Pat Augustine – For-Shor Company

“I have had the pleasure of working with DH Glabe & Associates for many years. I rely on their expertise, experience, and professionalism. They have been instrumental in A-1’s success and I look forward to working with them for years to come.“

Dwight Allenbaugh – A-1 Scaffold Mfg. Inc.

Earthquake Engineering Consultants

Structural seismic evaluation helps to determine if a seismic retrofit is required to mitigate a variety of potential hazards. Structural system types that often require retrofit include unreinforced masonry, concrete shear walls, steel moment frames, steel braced frames, and light framed wood construction among others.

With sophisticated structural analysis software, our engineers can model and determine a building’s expected behavior during a seismic event. The strength of the elements within the lateral force resisting system is compared to the seismic forces that are generated within them during an earthquake. When an element is found to be incapable of handling the load that it is required to resist, then retrofit may be required. While many deficiencies can only be identified through complex engineering calculation and analysis, some conditions that require retrofit can be identified through visual observation and investigation.

The process of evaluating and designing the retrofit of an existing building is different from the conventional structural design of new buildings. The current state-of-the-art analysis and design approach for the seismic evaluation of existing buildings is founded on a performance-based philosophy that includes two parts. First – Performance Objective: what degree of damage to the building is tolerable in the event of an earthquake? Second – Seismic Demand: how much seismic demand will be used in the analysis of the building? Our engineers understand and employ the most up to date standards to ensure compliance with all applicable seismic building codes.