OSH 379 Soil Safety / Trenching Safety Quiz Week 5 1. Define “trench.” a. A narrow excavation (in relation to its length) made below the surface of the ground. In general‚ the depth is greater than the width‚ but the width of a trench (measured at the bottom) is not greater than 15 feet (4.6 m). If forms or other structures are installed or constructed in an excavation so as to reduce the dimension measured from the forms or structure to the side of the excavation to 15 feet (4.6 m) or less
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Chapter 11 : Soil: The Foundation for Land Ecosystem Chapter 11 Brooke Settles Chapter 11 discusses three major practices that expose soil erosion and how they can be corrected . The three are Over- cultivation‚ Overgrazing and Deforestation. These are each all major problems in creating an unsustainable society. The good thing is that each of these causes of erosion can be corrected to create a more sustainable society. First there is Overcultivation which is the practice of repeatedly
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(D30)2 / [D10 x D60] = 0.1252 / [0.55 x 0.078] = 0.36422 < 1 Cu = D60 / D10 = 0.55 / 0.078 =7.0513 > 6 If a soil is well-graded‚ it should satisfy 1 < Cc < 3 Cu > 4 (for gravels) Cu > 6 (for sand) Note that‚ from our result‚ Cc is much smaller than one. So by the constraints 1 < Cc < 3‚ we can conclude that the testing soil is not well-graded‚ but poorly graded. And the Cu obtained is 7.0513 > 6‚ which implies that the sample should be sand but not
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cascade green always make me feel warm inside. I make myself a cup of hot coffee and head towards our balcony‚ which faces the beautiful‚ lush green lawns next to the slope of the nearby hill. I take a deep breath‚ inhaling the beautiful aroma of the wet soil. The chirps and trills and cuckoos of the birds draw my attention. People say‚ birds never visit places where we stay. That is so not true! A person just has to get up early and have a stroll down the road near his house. It’s hard to believe that
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The Free Soil Party was a fleeting political party in the United States active in presidential elections‚ and in some state elections. This party consisted of anti-slavery politicians from various political parties. The Free Soil Party was founded in Buffalo‚ New York and was an alternative third party. The Wilmot Provision‚ which was an amendment attached to bills being presented for funding request from the government. On the behalf of the newly free states that prompted the conversation about
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HOME - earth The Earth is the engine of our existence ‚ offering us the necessary resources to live‚ breath ‚ eat and enjoy every day of our lives . But how were all these resources created ‚ what is the impact of men on the natural environment and how can the humankind change the way it treats now all the gifts that the Earth is offering to it unconditionally? These are some of the questions that the HOME documentary answers in a manner that is quite unique and transformational . The beginning of
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03.04 Soil and Impressions Soil For the forensic scientist‚ soil is more than dirt. Soil is thought of as surface material from the earth‚ both natural and artificial. In other words‚ soil includes not only dirt but also rocks‚ animal material‚ and vegetation that lie near the surface of the ground. In addition‚ it may include pieces of glass‚ fragments of brick or stone‚ and pieces of asphalt. The combination of things in the soil may help link a suspect to the crime scene if the soil is somehow
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Soil-transmitted helminthes(STH) are a group of parasitic nematode worms that cause human infection known as helminthiasis through contact with parasite eggs or larvae that thrive in the warm and moist soil of the world’s tropical and subtropical countries( World Health Organization‚ 2005). As adult worms‚ these worms live for years in the human gastrointestinal tract. Most Infections are caused by four main species of worms commonly known as roundworms( Ascaris lumbricoides)‚ whipworms( Trichuris
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characteristics of any one soil type you have studied. (2009 Q18‚ 80 marks) In this answer I will discuss the characteristics of the Brown Earth soil. Brown Earth soils are known as a zonal soil as they developed as a result of the Cool Temperate Oceanic climate and the natural‚ mixed‚ deciduous vegetation of this climatic region. This climatic region is located between 30o and 55o North of the Equator. Brown Earths are the most common soil type in Ireland. Brown Earth soils have a number of characteristics
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Introduction Two Environmental Problems in Ethiopia would be soil degradation and overpopulation. This presentation will cover the main questions of why this is happening and answers that could help and control Ethiopia ’s land and overpopulation problems. Strategies will be assessed as to the help Ethiopia needs from inside and outside sources. Other regions in the world will be identified that have progressed from these same problems‚ and what impacts these implementations have had on their success
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