December 24, 2015

StuccoMetrics: Performance Testing and Evaluation of Drainage Screed Flashings and Drainage Subassemblies Used in Stucco Drainage Wall Systems

Building codes require a concealed water-resistive barrier (WRB) with a means of drainage (drainage subassembly) at the base of an exterior Portland cement-based plaster (stucco) drainage wall. Although not mandated, similar drainage screed...

November 18, 2015

Foundation Wall Waterproofing Repair Strategies for Existing Buildings: The Long-Term View

Approximately half of all of today’s commercial and institutional buildings were built before 1980¹. Many of these buildings were conceived and designed for generations of use, but have outlasted, or will soon outlast, the...

November 18, 2015

Evaluating the Conditions of the Miami Marine Stadium

Built in 1963, the Miami Marine Stadium is an iconic modernist landmark on the Miami
waterfront. The 6566-seat cast-in-place concrete stadium has a footprint of approximately 125 x
330 ft (38 x 100 m). The eight-bay, origami-like...

November 13, 2015

AISC 358: Prequalified Moment Connections

Following the M6.7 Northridge Earthquake 20 years ago, an engineer performing a post-earthquake inspection of the Santa Clarita City Hall was struck in the head by a structural bolt as he removed a ceiling tile to observe the framing.


November 11, 2015

Seismic Strengthening of Buildings in Los Angeles

By: Michael Cochran, Dilip Khatri, Kevin OConnell, Doug Thompson

Los Angeles is no stranger to earthquakes and, like other cities in California, has experienced extensive damage in previous seismic events, which has led to significant advancements in earthquake engineering. Some might say that L.A. has been...

November 5, 2015

Evaluating Snow Loads on Structures

The snow storms that affected the New England region in February of 2015 were, for the most part, typical Nor’...

November 4, 2015

Incorporating GIS-Based Structural Evaluation Tools into Pipeline Asset Management

By: Peter Nardini, Mehdi Zarghamee, Lauren Bain, Courtney Jalbert, Angela Remer
This paper presents the recent enhancements to Tarrant Regional Water District’s (TRWD’s) geographic information system (GIS)-based structural evaluation tool, how this tool is used to improve asset management capabilities,
November 4, 2015

Analysis of a Steel Pipeline in a Seismically Active Region

The Carlsbad Desalination Project uses a pipeline to deliver water from a seawater desalination plant located near sea level to the San Diego County Water Authority’s Second Aqueduct connection facility located at an elevation of
November 4, 2015

Evaluation of Acoustic Wave Based PCCP Stiffness Testing Results

By: Rasko Ojdrovic, Peter Nardini, Marc Bracken, John Marciszewski
Prestressed concrete cylinder pipeline (PCCP) condition assessment methods include an acoustic wave propagation testing technology (ePulse) to identify sections of pipeline with reduced structural stiffness. A recent innovation, ePulse,
November 4, 2015

Composite versus Stand-Alone Design Methodologies for Carbon Fiber Lining Systems

By: Michael Gipsov, Rasko Ojdrovic, Anna Pridmore
Fiber Reinforced Polymer (FRP) composite lining systems are used by major municipalities throughout the United States to structurally rehabilitate and upgrade large diameter pipelines. For internal Carbon Fiber Reinforced Polymer (CFRP)