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 23, 2016

A Collaborative Approach to Restoring MIT Main Group and Building 10 Dome

By: Emily Hopps, Carl Jay, Shawmut Design and Construction, Benjamin Markham, Acentech Inc., Gary Tondorf-Dick, Massachusetts Institute of Technology

Since 1916, the Great Dome has been the symbol of the MIT campus. In 1942, MIT covered the oculus skylight in the Dome, resulting in the Barker Library Reading Room being solely lit by electric lights and an overall dim lighting level. MIT...

November 23, 2016

From the Horror Files: Lessons Learned from Envelope Failures

This presentation will illustrate lessons learned from 20 years of investigating envelope failures of various building types across the United States. The presenter will use several case studies to show the causes and effects of building envelope...

November 23, 2016

Building Enclosure Compliance Testing - The How and Why

What are the risks in the enclosure design and how can an owner and designer verify performance and compliance, especially for critical design elements? How do owners and designers know they have the correct materials, a functioning assembly, and...

November 23, 2016

Roofs with a View: Structure and Building Envelope Solutions

Through a series of real case studies, this workshop will review structural and building envelope solutions for design projects involving the addition of a new roof deck to an existing building. Roof decks and green roofs are becoming increasing...

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 7, 2016

Guide to ACI 562-16 Repair Code: Design Examples

On 29 September, Gustavo Tumialan and Jared Brewe gave presentations as part of a six-part webinar series presented by the American Concrete Institute (ACI). The series, “Guide to ACI 562-16 Repair Code: Design Examples,” reviewed the...

October 7, 2016

Fully Soldered Metal Roofing: More Complicated Than You Think

Copper roofing has been used for centuries, particularly on ornate institutional or historical buildings where access and roof maintenance is impractical. When fully soldered, copper roofing can provide a watertight, durable roof with a decades-...

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...