February 13, 2020

Seismic Fragility and Risk Assessment of Waterfront Structures at the Port of San Francisco

By: Gayle Johnson, Justin Pyun, Hope Seligson, Matt Wickens

A $5B program is underway at the Port of San Francisco to strengthen or replace the three mile long seawall. Part of the program is a multi-hazard risk assessment, evaluating the consequences of flooding due to sea level rise and earthquake...

February 13, 2020

Upcoming Changes to ASCE/COPRI 61-19 Chapter on Ancillary Components

By: Gayle Johnson, Brett King

ASCE/COPRI 61-14, Seismic Design of Piers and Wharves covers the seismic design of ancillary components in a brief Chapter 8. The only ancillary components covered in any significant detail are pipelines, container cranes, and marine loading arms...

February 13, 2020

Performance Based Seismic Retrofit Solutions for Wharf Preservation

By: Sam Yao, Muhammad Naeem, Joshua Core, Sara Barrett

Brooklyn Basin is a multi-billion-dollar real estate development of the former Port of Oakland 9th Avenue Terminal located along the Oakland Estuary. The centerpiece of the development is the 10 acre shoreline park which includes a 1,200 foot...

February 13, 2020

Analysis of Measured Marine Oil Terminal Berthing Velocities

Berthing velocities for design of fender systems have long been based on old and incomplete data, often from studies dating as far back as the 1950s. Both PIANC and MOTEMS continue to use values based on these old datasets in their...

January 8, 2020

Steel Stud Bearing Walls

By: Connor Bruns, Eric Twomey, Terrence McDonnell, Matthew Johnson

Pre-fabricated, structural cold-formed metal framing (CFMF) bearing walls are a trending construction system and an economical alternative to structural steel or reinforced concrete systems for mid-rise construction. CFMF wall systems are...

January 2, 2020

Cutting Prestressed Concrete Framing

This article examines the structural considerations of modifying existing PC floor elements and provides a case study where these methods were used successfully. The focus is on simply supported tee beams with fully bonded strands. It is...

December 2, 2019

Effects of the Improper Modeling of Viscous Damping on the First‐mode and Higher‐mode Dominated Responses of Base‐isolated Buildings

By: Ricardo Medina, Hamidreza Anajafi, Erin Santini‐Bell

In many finite element platforms, a classical global damping matrix based on the elastic stiffness of the system (including isolators) is usually developed as part of the solution to the equations of motion of base‐isolated buildings. The...

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