Laboratory Report 2: Soil Texture, Bulk density and Porosity
The classification of soil texture is determined by the percentage of each of the soil separates. Soil separates are mineral particles smaller than 2mm, and these particles are sand, silt and clay. These textures are separated by the size of the particles, with sand being the largest between 2mm and 0.05mm, silt at between 0.05mm and 0.002mm, and clay at <0.002mm. The size of the particles influences the porosity and other characteristics of the soil. The soil texture determines the fertility of the soil, its water holding capacity and how the soil can be managed.
The purpose of this lab was to become familiar with determining soil texture by using various methods.
Particle Density and Bulk Density
Particle density is the measure of the density of the soil solids, with no pore space. This is important as it helps increase understanding of the soil texture and helps to determine the bulk density and porosity. Bulk density is the measure of relative soil compaction, as expressed in total mass per total volume. This helps determine the porosity of the soil and how compacted the soil is. As the bulk density increases so too does the compaction of the soil and the porosity decreases. The purpose of the lab was to…
There is no method available to determine the plasticity index. The Plasticity index of soil BH3 is obtained from the difference between Liquid Limit (LL) and Plastic Limit (PL).
• Visual Classifications (see Figure 3 : Unified Soil Classification Chart)
BH1: SP (poorly graded sands, gravelly sands, little or no fines)
A soil sample of BH1 is included in coarse grained soils. More than halfof coarse fraction is smaller than 2.36mm and predominantly one size or a…
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,…
no way of fixing these, the building would have to be cordoned off and demolished.
Subsoil’s have all different types of properties and different bearing capacities; I have inserted a table below to show the typical bearing capacities.
Bearing Value (kN/m2)
Dense gravel or dense sand and gravel
Medium dense gravel or medium dense sand and gravel
Loose gravel or loose sand and gravel
Medium dense sand
Milkshake Mixer was used to evenly blend the liquid for a few moments. The liquids set for 15 minutes before stirring it again and finally pouring it into a tall graduated cylinder. There was 10mL of Calgon added to the cylinder and filling the remaining with distilled water until the cylinder was full. At the same time a control sample was set up in another cylinder with distilled water and 10mL of Calgon. After two hours of letting the liquids sit, a Bouyoucous hydrometer was gently placed it…
The Australian myth by Pund-jel, the Creator, started out by cutting three large sheets of bark with a big knife. He then formed a human, he first made the feet, then the legs, then the trunk, the arms, and the head. He made a clay man for each of the pieces of bark and began to dance round them to bring joy. Next he took bark from a eucalyptus tree and made hair to stick on the heads of the clay men. He then laid them down, blew his breath hard into their mouths, their noses, and their navels…
water that still snakes under that part of the river today. I personally believe for the time it may have been one of the best things built. The water ran through a california canal and used the siphon to return to yuma side of the river. The natural silt in the water because of the rocky edges of the river washed down by the rushing water Caused many problems it would fill the canals and block up water routes.”When it flooded, the sediment-laden river clogged diversion headworks and irrigation…
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.…
The Sanmenxia dam has become a national symbol of power and the party’s ability to dominate nature. Many people hoped that the construction of the Sanmenxia Dam would block all the silt from upstream and make the Yellow River “run clear”. (Yellow River, pg.184) After completion, the dam failed to block all the silt in the Yellow River because the rapid silt accumulation has exceeded Chinese leader’s expectations. The purpose of the dam was later changed to discharge silt back into the river…