The purpose of this lab was to test for which soil type would be best for food production. The tests included Forest Soil, Floodplain Soil, and Garden Soil. We predicted that garden soil will have the best properties for food production because we expected it to have the highest value of nutrients for plants to grow in and a soil composition that is fit for food production (ex. Water Holding, etc). To test our hypothesis, we ran tests measuring Percent Water Content, Organic Material, Nitrates, Phosphates, Potassium, and Percent Sand, Silt, and Clay.
The first test we conducted was the Percent Water Content; to determine the value, we massed soil in a tin cup, heated the tin cup and soil in the microwave for 24 hours, and then re-massed…
The purpose of this experiment is to find out which type of soil amplifies side-to-side shaking the most in an earthquake.
My hypothesis is that sand will amplify the shaking the most because, liquefaction loosens up the soil which can make buildings slide.
To build your shake table, you will need:
Coffee can lid, or any flat plastic lid with approximately 3/8" lip that can fit under the shake table tray
Marbles, or any small balls of the…
Introduction: Soil samples where collected to test at Green River College, King County Washington, Sec 16 T21N R05E, W.M. in the gator pond retention area. Testing was done every half chain, for a distance of 528 feet to the north/south, 16 lines. Plots to the east/west where done until the water no longer flowed into the water shed. Data collected included, amounts of sand silt and clay, the amount of gravel, and dominate and co-dominate species in a 4 foot radius and the density of each plot.…
An important chemical property of soil that can affect herbicide persistence is pH. Soil composition is a physical factor determined by the relative amounts of sand, silt, and clay in the soil (the soil texture), as well as by the organic-matter content. The types and abundance of soil microorganisms present in the soil make up the microbial aspects of the soil environment. Generally, soils high in clay, organic matter, or both have a greater potential for herbicide persistence because of…
In this chapter, a case study of application of coir geotextile for increasing the CBR value has been presented. This case study is of soil in Assam, India. Assam is a state of India. In this case study attempts were made to increase the CBR value of black cotton soil in Assam using coir geotextile. A number of CBR tests are conducted (both soaked and unsoaked conditions) using samples consisting of soil only and soil with layer of coir mat at different position from the top…
Mehta, Rutvij J. Sonecha, Parth D. Daxini, Parth B. Ratanpara, Miss Kapilani S. Gaikwad et.al. (2014): They used black cotton soil from Rajkot Gujrat and determined various engineering properties of the black cotton soil having medium to low swelling property. They stabilized the black cotton soil by using lime. Changes in the engineering properties of the black cotton soil before and after the stabilization by lime were observed on the basis of tests such as liquid limit, plastic limit,…
The site characterisation process our class used is only applicable to a single house. I was assigned to the T3 test hole. The result in the texture test meant that the modified percolation test had to be carried out for silt/clay subsoil found onsite in LIT Tipperary.
Deviations from Procedures
According to the EPA code of practice (2009) the T test hole should have the following…
Soil preference of the Red Compost Worms, Eisenia fetida
Earthworms provide countless benefits to humans, plants and animals, by improving drainage, advancing nutrient accessibility, and providing a steady soil system, helping to develop farm production. They benefit the soil ecosystem by decomposing and recycling organic matter, opening up pores inside the soil to develop its formation and supplying food for predators . By adding nutrients to the soil they inhabit, earthworms are…
OF A SOIL
To determine the Atterberg Limits of Soils
3.1.2 Learning Outcomes
Understand the Principle of Consistency and Atterberg Limits of Clay Soils
Describe the Atterberg Limit Tests and their uses
Perform the tests and obtain the Atterberg Limits
Calculate some Indices (Flow Index, Plasticity Index and Toughness Index) for the Clay Soil
3.1.3 Consistency indices
Fine-grained soils are formed in nature by the gradual deposition of soil particles from…
Comment on the properties of the soil
This test is useful when the soil is soft and its water content is near liquid limit.
The following precautions are necessary when using field vane shear tests:
1. The vane must be rotated soon (within 5 minutes) after insertion into the depth to be tested as delays of one (1) hour to one day may lead to overestimation of strength by 10% to 20% respectively.
2. Standard rate of rotation is 6 degrees per minute.