August 30, 2008

In-situ evaluation of two concrete slab systems, I : Load determination and loading procedure

By: Gustavo Tumialan, Galati, Nestore, Nanni, Antonio, Ziehl, Paul H.

Abstract: The primary objective of in-situ load testing is to assess the safety and serviceability of an existing structural system with respect to a particular load effect. At this time, the most appropriate loading level and procedure, as well...

July 30, 2008

Full Potential

Abstract: The steel industry has plenty of opportunites to be the most it can be from a sustainability standpoint.

June 29, 2008

NSAR in Concrete Slabs

By: Craig P., Pinelle, Dennis J., Mauro Scali, Matthew Sherman

Over the years, we have had a number of call-backs on projects where our epoxy coating applications had developed fluid-filled blisters. When we had these problems investigated, we found that osmosis was most likely the...

June 29, 2008

The Effects of Thermal Bridging at Interface Conditions

By: Totten, Paul E., Sean OBrien, Pazera, Marcin

Abstract: Thermal bridging in buildings can contribute to a multitude of problems, including, but not limited to, added energy use during heating and cooling seasons and interior surface condensation problems.|Thermal bridges are discontinuities...

June 29, 2008

The Beams Are Too Bouncy?

Abstract: If you practice structural engineering long enough, you will likely find your firm embroiled in a situation of controversy sooner or later. You may even be blamed as causing the problem. Our experience suggests when this happens, it...

June 29, 2008

On the Grid

Abstract: Seismic isolators, sandwiched between two steel grids, separate an existing San Francisco building from its vertical addition.

April 29, 2008

Inelastic cyclic testing of the kaiser bolted bracket moment connection

By: Adan, Scott M., Gibb, William

Abstract: Developed by Steel Cast Connections, Lehigh University, and IFC Kaiser Engineers, the Kaiser bolted bracket (KBB) is a proprietary steel beam-to-column moment-resisting connection. The connection consists of cast high-strength steel...

April 29, 2008

Experimental validation of building vibration propagation using a four story laboratory model

By: Michael Hughes, Sanayei, Masoud, Moore, James A., Zapfe, Jeffrey A., White, Robert D.

Abstract: A 4-story scale model building was designed and constructed for the purpose of predicting vibration levels at each floor. Mathematical models of column, beam, and slab elements were developed and combined, forming a system model. Each...

April 29, 2008

Design requirements for prequalified steel moment connections: Their historic development and present-day use

By: Ronald Hamburger, Hewitt, Christopher M.

Abstract: While engineers in the Western U.S. are likely familiar with the rigorous connection design requirements instituted following the Northridge earthquake, many engineers in the central and eastern U.S. are just becoming familiar with the...

April 29, 2008

Crack propagation evaluation of polymer composite FRP panels subjected to static and cyclic loading

By: Erbay, Omer, Phillip Sharff

Abstract: This paper summarizes a multiphase analytical and experimental study on evaluating the propensity for small delaminations in fiber-reinforced-plastic (FRP) composite panels to propagate under both static and cyclic (wind) loads. Finite-...