April 18, 2017

Designing for Flooding and Sea Level Rise

Building in coastal and flood-prone areas continues to increase as cities and coastal regions expand, leaving more assets at...

April 13, 2017

Lessons Learned From 100+ Projects on CFRP Repair of Pipelines

Since the beginning of carbon fiber reinforced polymer (CFRP) lining of pipes in the late 1990s, thousands of feet of pipe have been lined with CFRP in hundreds of projects across the United States. In the last decade, the author has been directly involved in the initial and final development of this technology and has applied it to pipes with various diameters, distress conditions, design loads, etc. in more than one hundred project
April 7, 2017

ASCE/SEI Guideline: Structural Fire Engineering

In the U.S., the vast majority of structures are designed to resist fire exposure according to prescriptive methods in the building codes. Accordingly, the designer selects qualified assemblies from available listings that describe the process or...

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

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...

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,...

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...

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