Knowledge Sharing

August 14, 2017

WSSC Breaks Its Record in CFRP Lining of PCCP in One Outage

By: Murat Engindeniz, Rasko Ojdrovic, Michael P. Gipsov

Washington Suburban Sanitary Commission (WSSC)’s condition assessment and repair program on critical transmission mains continued in spring 2016 with a recordbreaking project where a total of forty-one 60 in. to 66 in. diameter prestressed...

August 1, 2017

Structural Steel Plate Buried Bridges

The state of U.S. infrastructure and need for funding to improve it has been highlighted through efforts of national engineering organizations such as the American Society of Civil Engineers’ Infrastructure Report Card and the American...

July 17, 2017

ACI 562-16: The ACI Concrete Repair Code

By: Kevin Conroy, Keith Kesner

Simpson Gumpertz & Heger (SGH) Senior Project Manager Kevin Conroy coauthored an article describing the American Concrete Institute’s (ACI) updated building repair code for existing concrete structures. The...

July 3, 2017

Chicago’s Navy Pier Centennial Wheel

By: Jared Brewe, Ken Maschke, P.E., John E. Sheridan

STRUCTURE magazine recently published an article co-authored by Jared Brewe discussing the recent Navy Pier Ferris Wheel project. SGH assisted in the evaluation of construction picks and crane placements, crucial elements to...

June 2, 2017

Referencing and specifying fenestration field-testing

By: Evan Landis, Chrystal Chern, Anthony Nicastro

Construction Specifier magazine recently published an article written by several Simpson Gumpertz & Heger (SGH) staff members detailing quality control testing for fenestration products. In “Referencing and Specifying...

June 1, 2017

Membrane-level Drainage on Highway Bridge Decks

Design and construction of asphalt pavements over waterproofed bridge decks differ from roadway construction on grade.
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 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...

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