ASCE Philadelphia April Meeting - Multi-Technical Meeting (1 PDH)
T&DI / CM Tech Group / WTS - Southeastern Pennsylvania Transportation Authority (SEPTA) Market-Frankford Line (MFL) 5th Street Station - Independence Hall Station was originally opened in 1908 and rehabilitated for the bicentennial in 1974-76. Recent improvements, constructed between April 2019 to March 2021, include new headhouses and curb bumpouts at street level, waterproofing, structural repairs, system upgrades and updates, and new architectural finishes at station level. This presentation will highlight the project’s challenges and lessons learned during the design and construction phases.
SEI - The proposal for a Capitol Visitor Center began to crystallize in the mid-1970s with the issuance of the Architect of the Capitol's report "Toward a Master Plan for the United States Capitol." In 1991, Congress authorized funding for conceptual planning and design of a visitor center. In 1995, the design report was issued. Changes in security needs, as underscored by the tragic murder of two Capitol police officers in 1998, and other safety and accessibility considerations required revisiting and revalidating the 1995 report. The updated plan was presented to the U.S. Capitol Preservation Commission in October 1999. Decisions by the Capitol Preservation Commission led to the start of pre-construction activities in the fall of 2001. The events of September 11, 2001 necessitated additional design changes and prompted Congress to provide the necessary funding to move the project into construction. Actual construction began in 2002. By the fall of 2003, excavation was essentially complete and build-up of the structure began. Personnel began to occupy the building in July 2008 and it was dedicated and opened to the public on December 2, 2008. Since opening in 2008, millions of people have visited the Capitol, entering through the Capitol Visitor Center.
DVGI - Earthen construction and soil-based construction materials are widely used worldwide. Earthen construction encapsulates many different and varied forms of techniques and applications. As a vernacular solution, it has developed over many thousands of years in all inhabited continents of the world. In many rural regions of Africa, Asia and South America, earthen construction remains the predominant building solution. Recently their popularity has increased as they offer the potential for a low carbon footprint and sustainability benefits through recycling and as an alternative to high energy materials such as fired masonry. The earthen materials including adobe and rammed earth are manufactured using local base soils and empirically based manufacturing techniques. These materials have rarely been studied using a geotechnical approach, and there is a general lack of recognition of the key mechanisms at work mechanically and hydraulically. In this presentation I present a review geotechnical aspects of soil-based construction materials and a summary of recent and ongoing research with colleagues from the Structures and Heritage Research Group at the Catholic University including the case history of an ancient massive earthen heritage structure of the moche culture in Peru.
T&DI / CM Tech Group - Jack McElwee (Senior Program Manager, SEPTA) and Erica Antoine (Engineer of Record, Burns Engineering, Inc.)
SEI - Luca Barison (Nicholson Construction Company) and Giovanni Bonita, Ph.D., P.E., P.ENG., P.G. (GEI Consultants, Inc.)
DVGI - Miguel Pando, Ph.D. (Associate Professor of Geotechnical Engineering at Drexel University)
12:00 PM to 1:00 PM
Zoom Meeting (access info will be emailed to registrants)