Big dig powerpoint
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The Big Dig was the largest and most complex highway project in US history, aimed at solving Boston's traffic problems and reconnecting downtown to waterfront towns. It involved constructing 7.8 miles of highway with 161 lanes miles through tunnels under the city. Over its construction from 1982 to 2007, it used over 3.8 million cubic yards of concrete and excavated 16 million cubic yards of soil. The $22 billion project employed thousands of workers but faced construction issues like leaks in the tunnels that killed one person, as well as cost overruns that caused taxpayers to fund half the project. Difficulties included encountering more landfill debris and archaeological finds than expected during tunneling through the downtown area.
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Big dig powerpoint
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This construction job story, "Keep on Boring," ran in the November 2017 issue of Foundation Drilling Magazine. It also ran in several American, Canadian, and European construction magazines.
Megastructures design pdf
The document provides information about the construction of megastructures like the Gotthard Base Tunnel and Woodrow Wilson Bridge. It summarizes that the Gotthard Base Tunnel is the longest rail tunnel in the world at 35 miles long, cost $7 billion to construct using tunnel boring machines, and took 12 years to complete. It also discusses details of the construction process for the Woodrow Wilson Bridge, a 12-lane bascule bridge that cost $2.5 billion and involved over 1000 workers from 30 contractors.
Golden gate bridge
Some general information about golden gate bridge, San Francisco, America. Longest suspension bridge of his time and most visited bridge till now and marvel of CONSTRUCTION. Many movies also include this bridge because of because of its beauty. What a achievement!!!!
Water_Intrusion
This document discusses water intrusion in the I-93 tunnels in Boston and efforts to seal leaks. It notes that some water intrusion is normal during tunnel construction and leaks are typically sealed through pressure grouting of cracks in the concrete. While the tunnels experience more leaks currently than completed tunnels, the amount of leakage is within industry norms. Efforts to seal leaks through grouting are standard practice and will continue through project completion to further reduce water intrusion.
CTM_tutorial3 (1).pdf
The document discusses the design and construction of the Hoover Dam, including details about its massive scale using 3.4 million cubic meters of concrete, challenges during construction like extreme heat and flooding, and key milestones like excavating diversion tunnels and power station construction to generate hydroelectric power for the surrounding areas. Over 20,000 workers and 112 lives were lost during the 7 year construction process to complete this iconic landmark across the Black Canyon of the Colorado River.
Study of tunnel engineering
This document provides an overview of tunnels, including their definition, history, construction methods, design considerations, and effects of earthquakes. Tunnels are underground passages constructed for various purposes like transportation. Key construction methods include cut-and-cover, drill-and-blast, bored tunneling using a Tunnel Boring Machine, and sequential excavation. Design requires considering factors like ground conditions, water management, tunnel usage, and seismic activity. During earthquakes, tunnels can experience ground shaking, ground failures, deformations, cracking, and other effects that must be addressed in seismic design. The Gotthard Base Tunnel case study exemplifies addressing geological challenges during tunnel construction.
Foundation Drilling Magazine Cover Story
This construction job story, "Deep Foundations Drill to Keep TBMs Crawling on Canada's Largest Transit Expansion," ran on the cover of Foundation Drilling Magazine. It also ran in several American, Canadian, and European construction magazines.
Alexander Bridge Rehab ENR 2.4.13 issue[1]
The Alexander Hamilton Bridge in New York City is undergoing a major rehabilitation project involving replacing the deck, retrofitting steel arches and support beams, and repairing piers and foundations while maintaining traffic flow. The project is the largest ever for the New York State Department of Transportation. Unexpected deterioration was discovered, requiring redesigns. Through value engineering and innovative temporary structures that reduced steel usage and sped up construction, the contractor was able to make up lost time and remain on schedule. When complete, the bridge will have new structural components and safety features.
TindellPersuasive
The document proposes building the Siberia Alaska High Speed Rail route connecting North America and Asia. This would allow freight to be shipped quickly between continents via high speed rail and associated pipelines and cables. The project would provide massive employment and faster, cleaner transportation of goods between China, Europe, and North America within days instead of weeks. While expensive at $65 billion, the project is feasible given current traffic volumes and would benefit the economies of countries involved through new jobs and efficient transportation.
Linn Cove Viaduct
The Linn Cove Viaduct carries the Blue Ridge Parkway across Grandfather Mountain and was constructed between 1979-1987 at a cost of $10 million to minimize environmental impacts to the ecologically sensitive area. The 1,243 foot long segmental concrete bridge was built using a match casting technique where precast sections were constructed off-site and lowered into place to avoid damaging the terrain below. Through its innovative design and construction, the Linn Cove Viaduct is considered the most environmentally friendly major bridge ever built.
time_will_tell.pdf
An article reviewing the performance of PVC pipe in sewer applications in various U.S. municipalities.
Golden gate bridge construction
The Golden Gate Bridge spans the Golden Gate strait between San Francisco and Marin County. It has a main span of 1,280 meters and a total length of 2,737 meters. Construction began in 1933 and was completed in 1937, with 11 workers dying during construction. The suspension bridge cost $35 million to build and its international orange color makes it a iconic landmark in the San Francisco Bay Area.
Engineering Ethics
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Engineering Ethics
Tunnelling & underground design (Topic1-introduction to the tunnelling industry)
This document provides an overview of past and present tunnelling projects and challenges. It discusses the stuck Bertha tunnel boring machine in Seattle which has been stuck since 2013 due to overheating. It also discusses cost overruns and litigation on the Seymour-Capilano Twin Tunnels project in BC. Finally, it provides details on the course topics, lectures, and assignments for an introduction to tunnelling class.
Trenchless technology
Trenchless technology involves installing underground pipes and cables without digging continuous open trenches. This document discusses various trenchless methods like pipe jacking, microtunnelling, impact moling and their suitability for different ground conditions. Case studies demonstrate the successful use of trenchless technology for infrastructure projects to minimize environmental impacts and disruption.
Trenchless technology
Trenchless technology involves installing underground pipes and cables without digging continuous open trenches. This document discusses various trenchless methods like pipe jacking, microtunnelling, impact moling and their suitability for different ground conditions. Case studies demonstrate the successful use of trenchless technology for infrastructure projects to minimize environmental impacts and disruption.
Hoover dam bypass bridge
This presentation talks about hoover dam bypass bridge from the perspective of infra project life cycle. Hope you find it you useful.
MBA - Project Management - Mega Projects and the Impact on Society
The document discusses the Three Gorges Dam project in China, which is the largest hydroelectric dam in the world. It provides an overview of the dam's inception and approval in the 1990s, as well as its construction phases. The dam aims to provide flood control, energy production, navigation benefits, tourism, drinking water, and agricultural outputs. However, it has also led to negative environmental and socioeconomic impacts like the displacement of over 1 million people and destruction of archaeological sites. While the dam provides flood protection and renewable energy, its massive costs far exceeded initial estimates and it has caused significant ecological changes.
Removing Toronto's Expressway One Piece at a Time
The document summarizes the dismantling of a 1.4 km section of the elevated F.G. Gardiner Expressway in Toronto. The expressway was replaced with a 4-lane arterial road, pedestrian/cycle path, and landscaped areas. This created opportunities for redevelopment, encouraged alternative transportation, and improved the urban environment. The project was completed on time and on budget through careful planning, community consultation, and innovative construction techniques.
Tunnel
Tunnels are excavated underground passages constructed for transportation or engineering purposes. Constructing tunnels is challenging and involves complex civil engineering. There are various excavation methods like manual labor, explosives, heating/cooling, or tunnel boring machines. Tunnels are categorized as mining, public works, or transportation tunnels and are designed differently based on their intended use. Engineering challenges include withstanding forces like tension, compression, shearing, and torsion through strong tunnel materials and designs that maintain structural equilibrium.
Similar to Big dig powerpoint (20)
Construction Job Story in GeoDrilling International
Construction Job Story in GeoDrilling International
Tunnelling & underground design (Topic1-introduction to the tunnelling industry)
Tunnelling & underground design (Topic1-introduction to the tunnelling industry)
MBA - Project Management - Mega Projects and the Impact on Society
MBA - Project Management - Mega Projects and the Impact on Society
Big dig powerpoint
- 1. Central Artery/Tunnel Project “The Big Dig” PROJECT 0 GROUP 4 Chris Miner Sabah Tasnuva Tingting Liu Nicholas Johnson
- 2. What Is The Big Dig? “Largest, most complex, and technologically challenging highway project in the history of the United States” -Solution To Boston’s Traffic Problem -Reconnect Waterfront Towns To Downtown
- 4. WHY WE CHOSE “THE BIG DIG” A Big Part of Civil Engineering Involves Transportation
- 5. WHAT DID IT TAKE TO COMPLETE “THE BIG DIG”? 1982-Environmental Impact Documents 2007- Restoration of City Streets 7.8 miles of highway, 161 lanes miles 3.8 million cubic yards of concrete More than 16 million cubic yards of soil excavated 1999 through 2002, about $3 million of work completed each day About 5,000 construction workers were on the job Jay Cashman, Modern Continental 118 separate construction contracts, with 26 geotechnical drilling contracts. 22 billion
- 7. CONSTRUCTION PROBLEMS Faulty Loose Fixtures: September 2004 - Water seeps through traffic barriers in Interstate 93 tunnel -Workers sandbagged one wall -Independent engineers hired to study problem -Reported that the tunnels may have more than 400 leaks
- 8. July 2006 -39-year-old woman killed after 12 tons of cement ceiling panels fell on car. -Lead to investigation where federal and state officials uncovered additional problems almost on a daily basis Bechtel: engineering, construction and management company’s reputation damaged
- 9. FINANCIAL PROBLEMS - Over the course of the Project, costs kept increasing - 2.6 Billion to 22 Billion - Taxpayers ended up paying half of the project’s cost ENVIRONMENTAL ISSUES -Downtown area through which the tunnels were to be dug was largely landfill and included existing subway lines as well as innumerable pipes and utility lines that would have to be replaced or moved. -Tunnel workers encountered many unexpected geological and archaeological barriers -Glacial debris -Foundations of buried houses and sunken ships