April 7, 2017

Seismic Analysis and Design of a 21,000 Gallon Frac Tank considering Fluid-Structure Interaction Effects for FLEX Response at a Commercial Nuclear Power Plant

After loss of power and reactor cooling capability at the Fukushima Daiichi nuclear power plant due to an extreme seismic event, the U.S. nuclear energy industry developed a diverse, flexible approach to implement the lessons learned, called FLEX...

April 7, 2017

Overview of Alternative Load Path Analysis

Designing a structure to reduce the likelihood of disproportionate collapse requires an understanding of structural and material behavior and the expected response of that particular structure to the loss of a selected portion of the vertical...

April 6, 2017

Integrated Design Building at UMASS Amherst: A large scale CLT building case study

 The Integrated Design Building (IDB) at the University of Massachusetts Amherst will be the first, large-scale, mass timber building in the Northeastern U.S. when completed. At four stories and 87,000 sf, the building will provide offices,...

April 6, 2017

Using ACI 562 to Determine the Strengthening Requirements of a 42nd Story Rooftop Sundeck

After years of wear and neglect, a 42nd Story rooftop sundeck was so badly deteriorated the building occupants no longer utilized the space. During the sundeck rehabilitation, the condominium association elected to change the finishes, which...

April 6, 2017

Experimental Investigation of Deconstructable Steel-Concrete Shear Connections in Sustainable Composite Beams

By: Mark Webster, Jerome Hajjar, Lizhong Wang

A new deconstructable composite floor system, which consists of precast concrete planks and deconstructable clamping connections, is proposed to promote sustainable design of composite flooring systems in steel buildings and reuse of the...

March 30, 2017

The Best Fixes

Parking structures are an integral element in our daily lives that create an interchange between our homes, our destinations, and our built environment. These structures are often incorporated into buildings, integrated into the surrounding...

March 7, 2017

Performance of Ledges in Inverted-T Beams

By: Nancy Varney, David B. Garber, Eulalio Fernández Gómez, Oguzhan Bayrak

Researchers have not extensively studied the behavior of inverted-T (IT) beams experiencing ledge failures. The work described in this paper aims to fill that gap in knowledge by providing data from tests conducted on full-scale IT beams. To the...

March 6, 2017

The Case of the Car Dealership Floor Failure

CoatingsPro magazine recently published a case study in its January 2017 issue authored by Simpson Gumpertz & Heger (SGH) senior staff members. In “The Case of the Car Dealership Floor Failure,” Associate Principal...

March 1, 2017

Divine Design: Renovating and Preserving Historic Houses of Worship, Part IV

This series of articles discusses a number of commonly encountered structural issues on renovation and restoration projects that focus on historic houses of worship, and provides guidance on ways to address them. Parts one, two, and three of this...

March 1, 2017

Divine Design: Renovating and Preserving Historic Houses of Worship, Part II

This series of articles discusses some of the commonly encountered structural issues with renovation projects focusing on historic buildings of this type, and provides guidance on ways to address them. Part two of this series focuses on wall...

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