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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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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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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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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her book on Turkish village society‚ The Seed and the Soil‚ describes how virginity testing is related to the way that Turkish villagers conceptualize and explain the reproductive process. They see reproduction as analogous to the planting and growing of crops; the man provides the “seed” with his semen‚ and the woman serves as the “soil” in which the seed germinates and grows. As a metaphor for reproduction‚ the idea of the seed and the soil provides villagers with a way of thinking about and understanding
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LANDSLIDES Introduction The term ‘landslide’ includes all varieties of mass movements of hill slopes and can be defined as the downward and outward movement of slope forming materials composed of rocks‚ soils‚ artificial fills or combination of all these materials along surfaces of separation by falling‚ sliding and flowing‚ either slowly or quickly from one place to another. Although the landslides are primarily associated with mountainous terrains‚ these can also occur in areas where an activity
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The soil used in this experiment is Kaolinite clay‚ which has Cv = 8.69 sqm/year at 300 kPa (hydraulic result) and Cv = 2.98 sqm/year at 288 kPa (manual result). This result then would be compare with some theoretical calculation by using the isochorne plot. Introduction Oedometer test is test to present and measure the consolidation of a soil. Consolidation is a process when an external load is given at the top of a saturated soil which will cause the water to be squeezed from the soil and
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Introduction Every type of soil has its own percentage of moisture content. The void in soil content water and air. The moisture content may varies for each types of soil. Different type of soil has different moisture content. Moisture content of soil also may be affected by the climate where the high humidity country tend to have higher moisture content in soil. Size or structure of the soil particles also affecting the moisture content. The properties of the soil to retain water also one of the
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