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Dear Briana,
The ASCESouth JerseyBranchwould like to invite you to our next technical webinar meeting at 12:00 PM on Tuesday December 7, 2021.
Topic:
Pile Foundation for Construction over Closed Landfill Sites
The proposed talk is intended to describe the main issues in pile foundations involved in new construction and infrastructure development on the top of existing closed landfill sites necessitated in urban areas today. The present state of the art gathered through a number of on ground case studies will be discussed and it is perceived that a systematic approach in this area can be developed into design guidelines. In the design and construction of pile foundations over closed landfill sites, the challenges involved are of advanced concrete technology, steel corrosion protection, environmental, geotechnical, chemical considerations and science of landfill characteristics. As it is known, landfill itself is of different nature, and shows different behavior, when it is closed municipal waste landfill, construction debris, toxic or hazardous landfill. It causes different possible effects on piles foundations that are constructed to transfer loads from the desired new construction and any infrastructural development running through the landfill down into the underlying soil strata. The piles considered here are of two major types; prefabricated concrete driven piles and steel sheet piles. What is intended to cover is the settlement behavior. The landfill during stabilization can swell, retreat, subside and liquefy. Its lateral pressure exerted on piles may not follow idealized Rankine behavior of either sand nor clay. There is then the potential of landfill of attacking the concrete due to its chloride, sulfate, carbon dioxide and methane content and steel sheet piles due to its corrosive action. The evacuation of the emitting gases is required to be safely managed. During driving of the piles, the possibility of penetration of the hazardous substances into bottom soil strata has to be eliminated. Pre-drilling may also be required to ensure that the working piles do not meet refusals within the landfill.(1 PDH)
Presenter Bio:
Dr. Engr Javed Yunas Uppalis a BSc Civil Engineer, a PhD from University of London, Chartered Civil Engineer Member of the Institution of Civil Engineers UK, and Member American Society of Civil Engineers USA,. He has worked in the UK, in USA and Pakistan for over 45 years on important projects on multi-storied buildings, industrial structures, housing, educational campuses, telecommunication towers, roads, bridges, tunnels, environmental projects, and historical restoration projects. He has over 40 research and technical papers and conference presentations of national and international level. As a mark of his innovative contributions in engineering, his name appears in the "Who's Who in the World". Dr Uppal has endeavoured to address the issues of human importance: be them earthquakes, floods, energy crisis, water shortage, building failures, productivity and poverty. These efforts have been made through professional inputs, training programs and insertions of latest and affordable technologies cross cutting top to bottom levels.
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