January 30, 2004

Rising to the Challenge: Roofing Rehabilitation of the New York State Capitol

By: Niklas Vigener, James Jamieson

Abstract: Consider a list of single conditions that can make any roofing project significantly more challenging:|- Complex roof geometries and conditions|- A plethora of different roofing materials|- Extremely steep roof slopes|- Difficult access...

January 28, 2004

Rationale Behind and Proper Application of the Ductility Factor for Bracing Connections Subjected to Shear and Transverse Loading

By: Christopher Hewitt, William A. Thornton

In 1990, AISC and ASCE jointly commissioned a task group to develop a design philosophy for predicting the strength of bracing connections. The design methods in place prior to that time were only applicable to connections made to the webs of...

December 31, 2003

Analysis and performance of PCCP Mortar Coating

By: Mauro Scali, Paul Scheiner, Rasko Ojdrovic, Mehdi Zarghamee, Aquino W.

Abstract: The evaluation of cement mortar coatings on prestressed concrete cylinder pipes (PCCP) may include such techniques as petrographic examination, material testing, and environmental testing of soil and groundwater. Petrographic analysis...

June 1, 2001

Under the Microscope

Abstract: Forensic engineering is typically more complex than engineering design because it requires the integration of specialized knowledge of materials science, structural analysis and design, and construction...

December 13, 1998

Specifying Air Entrainment

By: Michael Brainerd, Mauro Scali, Paul Kelley

Abstract: Air entrainment can prevent cyclic freeze-thaw damage to concrete over a reasonable service life if coupled with a strong cement paste with low permeability. This article discusses how to correctly specify air entrainment, including...

Pages