services

what we do

STRUCTURAL DESIGN

Analysis and design of a variety of structures, including schools, hospitals, airport facilities, mixed-use buildings, and libraries. We have performed analysis and designed hundreds of buildings for aviation sensitive floors, as well as various seismic, wind, and impact loads.

We employ multifaceted techniques to analyze buildings, from simple linear static analysis, to advanced linear dynamic analysis, including push-over analysis and analysis via passive energy absorption systems such as linear viscous dampers and base-isolators.

Seismic evaluation

Seismic evaluation is an important part of our service; it allows clients to make informed decisions about their inventory of existing buildings that do not meet current code standards. OLMM has extensive experience in this through our work with multiple government agencies such as Alameda County, the City and County of San Francisco, SamTrans, the Department of Energy, Port of San Francisco, and the City of Pacifica.

Seismic Retrofit Design

Over the years, OLMM has successfully completed a number of seismic retrofit projects for existing buildings. These projects demonstrate our expertise in enhancing the structural integrity of diverse structures, ranging from historical landmarks to libraries, civic and science & technology buildings, and airport terminal buildings.

The seismic retrofit of existing buildings presents a myriad of intricate challenges that demand careful consideration and expertise. The complexity of working with structures originally designed with limited knowledge of seismic considerations necessitates creative and innovative engineering solutions to current building code requirements. Financial constraints often play a role, as retrofitting can be expensive, requiring a delicate balance between ensuring structural safety and staying within budget. Additionally, the retrofit process needs to be executed while minimizing disruption to occupants, which requires planning and coordination. Historical preservation adds another layer of complexity, as retrofit measures must be harmoniously integrated without compromising the building's architectural and cultural significance. In essence, successfully retrofitting existing buildings demands a comprehensive understanding of structural engineering, architectural sensitivity, financial acumen, and effective project management to overcome these multifaceted hurdles. We are very proud of our portfolio in this sector.



feasibility studies

OLMM has performed feasibility studies that involve evaluation of existing and new buildings to help clients make an informed decision on a particular project. This may include site visits and visual observation for existing buildings, along with a ASCE 41-17 Tier 1 evaluation to determine the deficiencies and a recommendation of a cost-effective and optimal solution. A similar approach is taken for new buildings, in which preliminary analysis is carried out to explore different lateral systems and to recommend an optimal and economical system given budget and programming constraints.

Seismic Equipment Anchorage

The design of equipment anchorage for seismic loads is an additional aspect of our structural services. OLMM has extensive experience on anchorage of many non-structural elements such as partition walls, AHUs, chillers, cable trays, and specialized equipment that is installed in hospitals and laboratories.

PERFORMANCE-BASED SEISMIC DESIGN

OLMM is very familiar with the ASCE/SEI 41-17 performance-based methodology to evaluate buildings to identify critical deficiencies for set performance targets. We have also worked on the modernization of existing buildings and are knowledgeable about the limitations imposed by the California Building Code regarding triggers for voluntary vs mandatory seismic upgrades.