April 21, 2016

Water Vapor Migration 101: The Basics of Vapor Retarders

Vapor retarders play an important role in controlling water vapor flow and can be a major element in durable building enclosure design. (Note: Although there is some debate in the industry over terminology, “vapor barrier” and “...

April 19, 2016

Stability of Buried Corrugated Metal Pipe

Graham Cranston presented Tuesday 12 April at the 2016 Annual Stability Conference hosted by the Structural Stability Research Council. His presentation title and abstract are below.

Title: Stability of Buried Corrugated Metal Pipe...

April 15, 2016

Connecting Past and Present

A trestle that once carried iron ore through a busy Bethlehem Steel plant in eastern Pennsylvania now serves as a pathway for visitors to the reinvented SteelStacks venue. Founded in 1857 in Bethlehem, Pennsylvania, and shuttered in 2003,...

April 12, 2016

Innovating with Materials

Mankind has innovated with design and construction methods and materials since Homo Habilis laid one flat stone horizontally...

April 12, 2016

Computational Design

Computational design helps architects, owners, and contractors assess coinciding parameters, such as geometry, logic, and...

March 16, 2016

What Structural Engineers Need to Know About Rain Loads

On 15 February 2016, Aaron Lewis and Sean Homem presented at the Geotechnical and Structures Congress in Phoenix, Arizona. The event was hosted by the Geo-Institute (G-I) and Structural Engineering Institute (SEI) of the American Society of Civil...

March 14, 2016

Can Vapor Retarders Address Problems From Moisture in Concrete Roof Decks?

Moisture entrapped within concrete roof decks is a major concern of the roofing industry. The NRCA (National Roofing Contractors Association) and others have reported numerous problems, including failures, due to moisture that migrates from the...

March 3, 2016

Drainage of Artificial Turf Fields

Artificial turf field construction has increased significantly during the last three decades. A new field is a significant investment for an owner; however, drainage problems resulting in ponding water on the surface of the field can be a source...

December 24, 2015

Blast and Impact Resistant Design of Overhead Protection Structures

Overhead protection (OHP) structures are used by major oil operators and government agencies in terrorist affected areas to protect facilities housing their personnel such as office facilities and dining facilities. Structural design of OHP...

December 24, 2015

StuccoMetrics: Performance Testing and Evaluation of Drainage Screed Flashings and Drainage Subassemblies Used in Stucco Drainage Wall Systems

Building codes require a concealed water-resistive barrier (WRB) with a means of drainage (drainage subassembly) at the base of an exterior Portland cement-based plaster (stucco) drainage wall. Although not mandated, similar drainage screed...