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WorksheetsExperiment 1
Total questions: 35
Worksheet time: 18mins
According to the introduction, what does an appropriate program of soil investigation for a given project depend on?
The type of project, the importance of the project, and the nature of the soil involved.
The weather conditions during construction.
The availability of construction materials nearby.
The estimated cost of the project only.
Which of the following projects would require a more thorough soil investigation?
Highway project
Large dam project
Small building project
Road repair project
Sampling either from pits or from borings followed by laboratory testing is widely used in soil investigation especially for:
Decorative landscaping
Important structures and relatively uniform subsoils
Gardening
Road painting
The determination of in-situ properties by laboratory tests can be most difficult due to the changes in soil structure during sampling, transportation, and preparation.
True
False
Fill in the blank: The strength, compressibility, and permeability of a soil in place may vary several fold within a few _____
inches
miles
years
hours
What is the most nearly undisturbed soil sample?
One in which the moisture content and structure are preserved and which is protected from undue strain while being made and transported to the laboratory.
One that is air-dried before transport to the laboratory.
One that is mixed thoroughly to ensure uniformity before testing.
One that is compacted to increase its density before analysis.
Undisturbed sampling is a critical process requiring utmost care.
True
False
If the sample required is more than 8 feet or 10 feet below the ground surface, what is usually necessary?
Special boring and sampling devices are usually necessary.
A simple hand auger is sufficient.
No sampling is required at that depth.
Only visual inspection is needed.
The simplest and most economical method of obtaining disturbed samples of good quality in most soils is the ________.
post-hole auger
rotary drilling
wash boring
percussion drilling
The auger works well in which type of soil?
Medium stiff cohesive soil and in most cohesionless soil above the water table for depths up to about 15 feet.
Very hard rocky soil below the water table for depths up to 50 feet.
Loose sandy soil saturated with water at any depth.
Highly organic clayey soil at depths greater than 30 feet.
Although the natural structure of the soil is highly disturbed, the average moisture content is not altered when sampling is done above the water table.
True
False
Why is it essential that disturbed samples be secured in such a manner that there will be no mixing of soil from various depths in the boreholes or pit?
To ensure the results of laboratory tests are accurate and to classify soils and determine if the soil is suitable for a given job.
To reduce the cost of soil sampling.
To make the transportation of samples easier.
To increase the moisture content of the samples.
Which of the following is NOT listed as equipment/apparatus needed for undisturbed (block) soil sampling?
Paraffin and stove for sealing sample
Measuring tape
Hand trowel, large knife, or wire saw for trimming sample
Microscope
Shovel and picks for digging pit
Fill in the blank: To seal the soil sample, ______ and stove are used.
paraffin
alcohol
sand
wax
What is the first step in the testing procedure for undisturbed block samples?
Excavate a pit to a level just above the desired sample.
Seal the sample with wax immediately.
Weigh the sample before excavation.
Label the sample container.
When trimming the sample, it should fit snugly inside the sample container before sliding the container over the sample.
True
False
According to the procedure, what should be used to undercut the sample?
Knife or wire saw
Measuring tape
Masking tape
Auger
Fill in the blank: The open ends of the sample should be sealed with a ¼” paraffin and protected with a ______ thick wood plug or ______ thick layer plaster.
¾” ; ¾”
½” ; ½”
1” ; 1”
¼” ; ¼”
What information should be labeled on the sample?
Date, location, elevation or depth.
Sample color, weight, and taste.
Collector's favorite number and weather.
Type of container and pen used.
If the sample is to be shipped by express or truck, what should it be placed in and surrounded by?
A wooden crate and at least 2 inches of sawdust or similar cushioning material.
A plastic bag and bubble wrap.
A cardboard box and shredded paper.
A metal container and foam padding.
If the soil is relatively strong and the sample is to be transported only a short distance, it may be wrapped in plastic film or ordinary household aluminum foil and placed in a heavy flat plan for support.
True
False
What should be examined by an auger boring to determine if the soil is homogeneous or stratified?
The soil profile at the point should be examined by an auger boring.
The color of the auger used should be examined.
The temperature of the soil should be examined.
The moisture content of the air above the soil should be examined.
Which of the following should be included in a complete data or boring log for each boring?
elevation of the top of the hole
depth in each change in soil
soil description
water table
Which of the following should be included in a sketch showing the location of a test pit for undisturbed sample and auger boring?
Significant topographic features such as rivers, lakes, roads, hills, rocks, and rock outcrops
Only the location of the test pit and auger boring
Only the soil description without any topographic features
Only the roads and rivers
Fill in the Project Name for the soil sampling data sheet.
Project Name (to be filled by the user)
Date of Sampling
Sample Location
Soil Type
Fill in the Location (exact location) for the soil sampling data sheet.
Location (to be filled by the user)
Date of sampling
Type of crop
Weather condition
Fill in the Date (the soil was obtained) for the soil sampling data sheet.
Date (to be filled by the user)
Location of sampling
Type of soil
Name of sampler
Fill in the Weather Condition for the soil sampling data sheet.
Sunny
Rainy
Windy
Snowy
Fill in the Depth to sample (from the ground) for the soil sampling data sheet.
Depth to sample (from the ground) (to be filled by the user)
Soil color (to be filled by the user)
Soil texture (to be filled by the user)
Soil moisture (to be filled by the user)
Fill in the Depth to sample (to the bottom) for the soil sampling data sheet.
Depth to sample (to the bottom) (to be filled by the user)
Soil color (to be filled by the user)
Soil texture (to be filled by the user)
Sample ID (to be filled by the user)
Fill in the Soil Description for the soil sampling data sheet.
Soil Description (to be filled by the user)
Soil pH (to be filled by the user)
Soil Temperature (to be filled by the user)
Soil Moisture (to be filled by the user)
Fill in the Depth of groundwater (optional) for the soil sampling data sheet.
Depth of groundwater (to be filled by the user)
Soil color (to be filled by the user)
Sample weight (to be filled by the user)
Date of sampling (to be filled by the user)
Fill in the Description of any special feature encountered for the soil sampling data sheet.
Description of any special feature encountered (to be filled by the user)
Date of soil sampling (to be filled by the user)
Name of the laboratory technician (to be filled by the user)
Type of fertilizer used (to be filled by the user)
V. Difficulties Encountered as a Group: The group faced which of the following during the laboratory activity?
Difficulties encountered as a group
Success without any issues
No collaboration required
All tasks completed individually
VI. Recommendations: Which of the following is an appropriate recommendation based on your group's experience during the laboratory activity?
Summarize key findings and suggest improvements for future experiments.
Ignore any issues encountered during the activity.
Repeat the experiment without any changes.
Disregard the results and focus on unrelated topics.
