AUA Guidelines for Backfilling and Contact Grouting of Tunnels and Shafts PDF Download
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Author: Raymond W. Henn Publisher: Thomas Telford ISBN: 9780727729835 Category : House & Home Languages : en Pages : 274
Book Description
- Introduction - Affects of geological conditions of grouting - Structural and operations requirements of the completed facility - Grouting of various lining types - Grout materials - Grout properties - Backfill grouting - Contact grouting - Grouting equipment - Record keeping - Quality control - Contract documents
Author: Raymond W. Henn Publisher: Thomas Telford ISBN: 9780727729835 Category : House & Home Languages : en Pages : 274
Book Description
- Introduction - Affects of geological conditions of grouting - Structural and operations requirements of the completed facility - Grouting of various lining types - Grout materials - Grout properties - Backfill grouting - Contact grouting - Grouting equipment - Record keeping - Quality control - Contract documents
Author: Nihal Anwar Siddiqui Publisher: Springer Nature ISBN: 3030790657 Category : Science Languages : en Pages : 503
Book Description
This book presents the proceedings of the First National Conference on “Sustainable Management of Environment & Natural Resource through Innovation in Science and Technology” (SMTST2020). The book highlights the latest development and innovations in the fields of sustainability, natural resource management, ecology and its environmental fields, geosciences and geology, atmospheric sciences, sustainability, climate change, and extreme weather, global warming, and global change, the effect of climate change on the ecosystem, environment, and pollution, as well as putting a strong emphasis on the multidisciplinary studies.
Author: Parag Khanna Publisher: Random House ISBN: 0812988566 Category : Business & Economics Languages : en Pages : 530
Book Description
From the visionary bestselling author of The Second World and How to Run the World comes a bracing and authoritative guide to a future shaped less by national borders than by global supply chains, a world in which the most connected powers—and people—will win. Connectivity is the most revolutionary force of the twenty-first century. Mankind is reengineering the planet, investing up to ten trillion dollars per year in transportation, energy, and communications infrastructure linking the world’s burgeoning megacities together. This has profound consequences for geopolitics, economics, demographics, the environment, and social identity. Connectivity, not geography, is our destiny. In Connectography, visionary strategist Parag Khanna travels from Ukraine to Iran, Mongolia to North Korea, Pakistan to Nigeria, and across the Arctic Circle and the South China Sea to explain the rapid and unprecedented changes affecting every part of the planet. He shows how militaries are deployed to protect supply chains as much as borders, and how nations are less at war over territory than engaged in tugs-of-war over pipelines, railways, shipping lanes, and Internet cables. The new arms race is to connect to the most markets—a race China is now winning, having launched a wave of infrastructure investments to unite Eurasia around its new Silk Roads. The United States can only regain ground by fusing with its neighbors into a super-continental North American Union of shared resources and prosperity. Connectography offers a unique and hopeful vision for the future. Khanna argues that new energy discoveries and technologies have eliminated the need for resource wars; ambitious transport corridors and power grids are unscrambling Africa’s fraught colonial borders; even the Arab world is evolving a more peaceful map as it builds resource and trade routes across its war-torn landscape. At the same time, thriving hubs such as Singapore and Dubai are injecting dynamism into young and heavily populated regions, cyber-communities empower commerce across vast distances, and the world’s ballooning financial assets are being wisely invested into building an inclusive global society. Beneath the chaos of a world that appears to be falling apart is a new foundation of connectivity pulling it together. Praise for Connectography “Incredible . . . With the world rapidly changing and urbanizing, [Khanna’s] proposals might be the best way to confront a radically different future.”—The Washington Post “Clear and coherent . . . a well-researched account of how companies are weaving ever more complicated supply chains that pull the world together even as they squeeze out inefficiencies. . . . [He] has succeeded in demonstrating that the forces of globalization are winning.”—Adrian Woolridge, The Wall Street Journal “Bold . . . With an eye for vivid details, Khanna has . . . produced an engaging geopolitical travelogue.”—Foreign Affairs “For those who fear that the world is becoming too inward-looking, Connectography is a refreshing, optimistic vision.”—The Economist “Connectivity has become a basic human right, and gives everyone on the planet the opportunity to provide for their family and contribute to our shared future. Connectography charts the future of this connected world.”—Marc Andreessen, general partner, Andreessen Horowitz “Khanna’s scholarship and foresight are world-class. A must-read for the next president.”—Chuck Hagel, former U.S. secretary of defense This title has complex layouts that may take longer to download.
Author: Jarrett E. Carlson Publisher: Society for Mining, Metallurgy & Exploration ISBN: 0873354923 Category : Technology & Engineering Languages : en Pages : 1250
Book Description
Every two years, industry leaders and practitioners from around the world gather at the Rapid Excavation and Tunneling Conference (RETC), the authoritative program for the tunneling profession, to learn about the most recent advances and breakthroughs in this unique field. The information presented helps professionals keep pace with the ever-changing and growing tunneling industry. This book includes the full text of 106 papers presented at the 2021 conference. Though the tunneling industry continues to develop both technically and contractually, one notable adaptation of the last two years has been the onset and management of COVID-19. The hallmarks of tunneling professionals include adaptability, resiliency, optimism, and management of change. These are traits that have been recently put to an entirely new challenge over the last year or so. We have truly witnessed why what we do is deemed “essential” infrastructure. The COVID-19 pandemic has impacted each of us, personally and professionally, and while times have been hard, we are fortunate to work in a field that is able to meet the challenge and thrive thereafter. Congratulations are in order to everyone in our industry for keeping the planning and development of projects moving forward and for maintaining safe and productive worksites in these challenging times.
Author: Jon Gertner Publisher: Random House ISBN: 0812996631 Category : Science Languages : en Pages : 448
Book Description
A riveting, urgent account of the explorers and scientists racing to understand the rapidly melting ice sheet in Greenland, a dramatic harbinger of climate change “Jon Gertner takes readers to spots few journalists or even explorers have visited. The result is a gripping and important book.”—Elizabeth Kolbert, Pulitzer Prize–winning author of The Sixth Extinction NAMED ONE OF THE BEST BOOKS OF THE YEAR BY The Washington Post • The Christian Science Monitor • Library Journal Greenland: a remote, mysterious island five times the size of California but with a population of just 56,000. The ice sheet that covers it is 700 miles wide and 1,500 miles long, and is composed of nearly three quadrillion tons of ice. For the last 150 years, explorers and scientists have sought to understand Greenland—at first hoping that it would serve as a gateway to the North Pole, and later coming to realize that it contained essential information about our climate. Locked within this vast and frozen white desert are some of the most profound secrets about our planet and its future. Greenland’s ice doesn’t just tell us where we’ve been. More urgently, it tells us where we’re headed. In The Ice at the End of the World, Jon Gertner explains how Greenland has evolved from one of earth’s last frontiers to its largest scientific laboratory. The history of Greenland’s ice begins with the explorers who arrived here at the turn of the twentieth century—first on foot, then on skis, then on crude, motorized sleds—and embarked on grueling expeditions that took as long as a year and often ended in frostbitten tragedy. Their original goal was simple: to conquer Greenland’s seemingly infinite interior. Yet their efforts eventually gave way to scientists who built lonely encampments out on the ice and began drilling—one mile, two miles down. Their aim was to pull up ice cores that could reveal the deepest mysteries of earth’s past, going back hundreds of thousands of years. Today, scientists from all over the world are deploying every technological tool available to uncover the secrets of this frozen island before it’s too late. As Greenland’s ice melts and runs off into the sea, it not only threatens to affect hundreds of millions of people who live in coastal areas. It will also have drastic effects on ocean currents, weather systems, economies, and migration patterns. Gertner chronicles the unfathomable hardships, amazing discoveries, and scientific achievements of the Arctic’s explorers and researchers with a transporting, deeply intelligent style—and a keen sense of what this work means for the rest of us. The melting ice sheet in Greenland is, in a way, an analog for time. It contains the past. It reflects the present. It can also tell us how much time we might have left.
Author: Gregory G. Noll Publisher: ISBN: 9781932235081 Category : Fire fighters Languages : en Pages : 204
Book Description
This e-book includes about an hour of video (embedded in two to five minutes features). Click on any video thumbnail once and the video opens up with its tool bar. You can start and stop the video, adjust the sound, or fast forward (only in the longer video clips).
Author: Ralph Keyes Publisher: Oxford University Press ISBN: 0190466774 Category : Language Arts & Disciplines Languages : en Pages : 320
Book Description
Successful word-coinages--those that stay in currency for a good long time--tend to conceal their beginnings. We take them at face value and rarely when and where they were first minted. Engaging, illuminating, and authoritative, Ralph Keyes's The Hidden History of Coined Words explores the etymological underworld of terms and expressions and uncovers plenty of hidden gems. He also finds some fascinating patterns, such as that successful neologisms are as likely to be created by chance as by design. A remarkable number of new words were coined whimsically, originally intended to troll or taunt. Knickers, for example, resulted from a hoax; big bang from an insult. Casual wisecracking produced software, crowdsource, and blog. More than a few resulted from happy accidents, such as typos, mistranslations, and mishearing (bigly and buttonhole), or from being taken entirely out of context (robotics). Neologizers (a Thomas Jefferson coinage) include not just scholars and writers but cartoonists, columnists, children's book authors. Wimp originated with a book series, as did goop, and nerd from a book by Dr. Seuss. Coinages are often contested, controversy swirling around such terms as gonzo, mojo, and booty call. Keyes considers all contenders, while also leading us through the fray between new word partisans, and those who resist them strenuously. He concludes with advice about how to make your own successful coinage. The Hidden History of Coined Words will appeal not just to word mavens but history buffs, trivia contesters, and anyone who loves the immersive power of language.
Author: Raymond W. Henn
Author: Raymond W. Henn
Author: Nihal Anwar Siddiqui
Author: United States. Federal Aviation Administration
Author: Parag Khanna
Author: United States. Federal Aviation Administration
Author: 
Author: Jarrett E. Carlson
Author: Jon Gertner
Author: Gregory G. Noll
Author: Ralph Keyes