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 11, 2017

Blast-Resistant Design of a Three-Story Glass Curtain Wall System at a Federal Research Facility

The authors designed a three-story glass curtain wall system for a federal research facility to withstand a blast load of 5.4 psi peak reflected pressure with 28 ms duration. We used WINdow glazing analysis response and design (WINGARD) software...

April 11, 2017

Evaluation and Design of Blast-Resistant Buildings at Refineries and Petrochemical Facilities

Buildings in refineries and petrochemical facilities, especially those housing personnel, need to be safe to withstand the effects of explosion, fire and toxic gas ingress, as per existing API requirements. The authors have designed over 200...

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 4, 2017

Restoring Alignment to Distorted Stackable Modules

Civil + Structural Engineer magazine published a case study by Simpson Gumpertz & Heger (SGH®) senior staff members detailing the condition assessment and repair of steel removable submarine covers (RSCs) at the Portsmouth Naval...

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...