In a borrow pit, the natural soil was found to have a moist unit weight of 112 pcf. The in- situ water content is 12.0%, and the specific gravity of soil solids is 2.7. The geotechnical engineer has decided to excavate, haul, and compact this soil in a highway embankment fill to a dry unit weight of 115 pcf at an optimum water content of 15%. If 10,000 cubic yard of compacted fill are required: (A) How many cubic yards of borrow material are required to be excavated? (Show all pertinent three-phase diagrams, volume-weight relationships, and calculations.) (B) If the compacted fill later becomes fully saturated by heavy rainfall, without change in the compacted void ratio: Compute the saturated water content and saturated unit weight. (Note: 1 yd" - 27 ft. Show all pertinent volume-weight relationships and calculations.) 10,000 yd³

Q: Define residual and transported soil.

A: Residual soils are defined as the soils which are formed due to in-situ weathering of the parent…

Q: Name the major engineering categories of soil?

A: Following are the major engineering categories of soil:

Q: How do soil permeability and porosity influence groundwater flow and drainage in soil?

A: Groundwater movement in the soil is influenced by soil permeability and porosity. While permeability…

Q: Describe the purpose of soil classification tests?

A: The classification test for the soil has done to identify the property and type of soil. The tests…

Q: The sequence of simplified Airport geology, from top to the bottom layer, is listed as a. Alluvium,…

A: The bed rock should be at the bottom layer as it is main layer in terms of bearing and strength. CDG…

Q: Explain the Methods for Establishing Required Soil Density.

A: The density of soil is defined as it is the weight per unit volume of the solid part of the soil.…

Q: 2. are engineering works created through the processing of parts of the earth's surface involving…

A: Various engineering work done on the earth's surface- Soil nailing  Ground freezing Caisson  Trench…

Q: Write down the most commonly used divisions for classifying soils for engineering and construction…

A: Soils is a complex material which is produced due to weathering of rocks .The weathering is caused…

Q: How do you calculate granular soil settlement?

A: To use the Schmertmann technique to estimate footing settlements in structural fills, an assumption…

Q: Why Silts and clays are considered fine-grained soil?

A: The particle of the soil which passes through the 75 microns or 0.075 mm size of the sieve is called…

Q: Explain Application to Transported Soil Deposits and Residual Soil Formations.

A: The transported soils are that type of soils which formed at one place but gets transported and…

Q: Discuss the main engineering considerations related to cohesionless soils and cohesive soils. Use…

A: A cohesionless soil is one in which soil grains don't seem to stick together because of its…

Q: What are Collapsible soils?

A: Collapsible Soil:

Field applications of hydraulic conductivity

Hydraulic conductivity is one of the hydraulic properties of soil defined as a measurement of the ability of a porous medium to permit water movement or fluid flow through it. It is denoted by the letter K. It is influenced by the density and viscosity of the fluid. It is also called permeability. Hydraulic conductivity is defined as the ratio of velocity to the hydraulic gradient. The different methods used to determine the hydraulic conductivity are laboratory methods (constant head permeability tests and falling head tests), in-situ field methods (pumping in and pumping out tests), small scale field tests (infiltration tests and slug tests), and indirect methods such as estimation from grain size, consolidation test data, and horizontal capillary test. The pedotransfer function (PTF) method is a specific empirical estimating approach employed in the soil sciences is also used to determine the hydraulic conductivity of the soil.