January 18, 2017

Mooring Line Systems for Tanker Vessels – Current Standards in Analysis and Design Compared to Real Life Data

Design and analysis of moorings of tanker vessels have traditionally been approached from two sides: from the vessel side, regulated by classification societies and with proposed guidelines from OCIMF, and from the land side, regulated by local codes and standards.
December 14, 2016

Smoke Control: Getting it Right

By: Brian Kuhn

The December 2016 issue of Construction Specifier features “Smoke Control: Getting it Right,” an article by Brian Kuhn. In the article, Brian explores the design and implementation of smoke control systems and the importance of...

December 14, 2016

Parametric Study on Effects of Pile Orientation in Integral Abutment Bridges

By: Brooke Quinn, Scott A. Civjan

For integral abutment bridge (IAB) design, there is no consensus on the preferable orientation of the piles supporting the abutment, although variations can affect overall bridge behavior and forces in the piles. This paper details a parametric...

December 12, 2016

Development and Evaluation of Seismic Retrofit Alternatives for Older Concentrically Braced Frames

By: Molly Johnson, Andrew D. Sen, Marsha A. Swatosh, Ryan Ballard, Daniel Sloat, Charles W. Roeder, Dawn E. Lehman, Jeffrey W. Berman
Concentrically braced frames (CBFs) have been used for seismic-lateral-force resisting systems for many years, but prior to approximately 1988, they were not designed to promote ductile response using capacity-based design.
December 12, 2016

Evolution of ACI 562 Code – Part 10

By: Gustavo Tumialan, Nestore Galati, Antonio Nanni

The December 2016 issue of Concrete International magazine includes an article co-authored by Gustavo Tumialan with Nestore Galati of Structural Technologies and Antonio Nanni of the University of Miami. The article, “...

November 17, 2016

Blind-Side Below-Grade Waterproofing: Lateral Water Migration, Confining Pressure and Bond Relationships

As a follow-up to their preliminary laboratory testing program related to lateral water migration with blind-side below-grade waterproofing membranes, John Karras, Anthony Nicastro and former SGH employee Keith Nelson recently authored...

October 3, 2016

Continuous Transverse Reinforcement — Behavior and Design Implications

Recent advancements in automatic reinforcing bar bending machines allow fabrication of continuous transverse reinforcement (CTR) with 90-degree transverse bends. The resulting closed, continuous reinforcement increases the speed by...

September 20, 2016

Decoding the Code: 2016 New York City Energy Conservation Code

On 3 October 2016, the updated New York City Energy Conservation Code (NYCECC) will go into effect....

September 9, 2016

Evolution of ACI 562 Code – Part 7

The September 2016 issue of Concrete International Magazine includes an article by Jared Brewe (Senior Staff I, CHI SE), Gustavo Tumialan (Senior Project Manager, BOS SE), and Paul Kelley (Senior Principal, BOS SE). The article, “Evolution...

August 9, 2016

Silicon Valley Mid-Summer Emergency: Santa Clara Addresses the Peak-Demand Repair of a 96-inch Pipeline

By: Rasko Ojdrovic, Peter Nardini, Anna Pridmore

This paper presents Santa Clara Valley Water District's (SCVWD) approach to addressing their first high profile water main failure including their application of failure investigation, emergency condition assessment, pipe...

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