28 Questions
What is a characteristic of self-forming earplugs?
They work as well as most molded earplugs
When should reusable earplugs be cleaned?
After each use
What can reduce the protective value of earmuffs?
Wearing glasses, facial hair, or long hair
What is the primary purpose of head protection in a safety program?
To protect employees from potential head injuries
When is an ANSI approved Hard Hat required?
When the risk of falling or flying objects is present
What type of personal protective equipment should employees wear to protect their legs and feet?
Protective footwear
What is the primary limitation of the sieve analysis method for determining grain size distribution?
It cannot be used as the sole method for finer soil
What is the relationship between the sieve number and the opening size?
Higher sieve number corresponds to smaller opening size
What is the classification of a well-graded gravel with little or no fines according to the Unified Soil Classification System?
GW
What is the characteristic of a poorly graded gravel according to the Unified Soil Classification System?
It has a gravel-sand mixture with little or no fines
What is the Unified Soil Classification System rating for a well-graded sand as a subgrade material?
Good
What is the criterion for identifying coarse-grained soils as G according to the Unified Soil Classification System?
If the greater percentage of the coarse fraction is larger than the No. 4 sieve
What is the primary purpose of soil investigation in a site investigation?
To determine the suitability of the site for the proposed project
What factors are considered when determining the depth of soil investigation?
Type of proposed foundation, pressure bulb of proposed foundation, and relationship of proposed foundation to other foundations
What is the purpose of taking soil samples from a site?
To determine the physical, chemical, and general characteristics of the subsoil
What is the main objective of a site investigation?
To gather information about the site's physical setting and conditions
What is the significance of establishing the physical, chemical, and general characteristics of the subsoil?
It helps in designing an adequate and economic foundation
What is the relationship between the type of proposed foundation and the depth of soil investigation?
The type of proposed foundation affects the depth of soil investigation
What type of heavy equipment is used for pushing large amounts of soil or material?
Dozer
What is the primary purpose of a loader in heavy equipment operations?
Loading materials into a bucket
What is a unique feature of a lowboy trailer?
Two drops in deck height for low clearance
What is an alternate term for a lowboy in British English?
Low-loader
What type of dump truck is specially designed for winter services?
Winter Service Vehicle
What is another term for a lowboy in western Canada and South Africa?
Low-bed
What is a common purpose of an excavator?
To move earth and dig trenches
What is an important factor to consider when selecting protective gloves?
The nature of contact with chemicals
What is a type of tool used for measuring?
Tape measure
What is a safety precaution that can be worn?
Safety harness
Test your knowledge of site investigation and soil analysis, including assessing accessibility, potential hazards, and surface and ground conditions. Learn about the importance of soil investigation in determining the suitability of a site for construction or development.
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