Question 1

Where is information regarding the soils in a construction area and a borrow pit most likely to be found?&#10;A)Soil surveys&#10;B)Laboratory reports&#10;C)A. and B.&#10;D)None of the above

Accepted Answer

Information regarding the soils in a construction area and borrow pit are most likely to be found in soil surveys and laboratory reports. Typically, soils excavated from a borrow pit must be tested and classified before it is placed in an embankment or used as fill material on a construction site.

Question 2

Which of the following properties is not included in a soil's Atterberg Limits?&#10;A)Gradation&#10;B)Plastic limit&#10;C)Liquid limit&#10;D)Plasticity index

Accepted Answer

The gradation of a soil is not included in its Atterberg Limits. The term Atterberg Limits refers to a soil's Plastic Limit (P.L.), Liquid Limit (L.L.), and Plasticity Index (P.I.). The P.L. indicates the point at which just enough moisture is present in the soil for it to be shaped. The L.L. is the minimum moisture content needed in a soil for it to flow if it is slightly disturbed. The P.I. is a calculated value (P.I. = L.L. - P.L.) that indicates the range of moisture content in a soil which may exist in a plastic condition.

Question 3

Which of the following is a rule of thumb&#34; that an inspector can do in the field to determine if a soil is plastic?&#10;A)Jump on the soil&#10;B)Roll the soil between his fingers&#10;C)Roll the soil into a ball and throw it&#10;D)None of the above

Accepted Answer

An inspector can roll the soil between his fingers to determine if the soil is plastic. If the soil does not crumble easily, it is assumed that the soil is plastic. Laboratory testing is required to determine the actual plasticity of a soil.

Question 4

Color often indicates what materials are contained within a soil. Which of the following color and characteristic combination is not correct?&#10;A)Light or white = lime or sand&#10;B)Brown or red = iron or iron oxide&#10;C)Green = organic matter&#10;D)Gray = poorly drained

Accepted Answer

The color and characteristic combination of 'green = organic matter' is not correct. Soils that contain organic matter are usually very dark. Naturally occurring green soil is rarely encountered on the planet Earth, but may be indicative of an algae presence, overuse of soluble fertilizer, or toxic/hazardous waste.

Question 5

A soil that is classified as A-1 consists mainly of which of the following materials?&#10;A)Clay&#10;B)Sand and gravel&#10;C)Silt&#10;D)Loam

Accepted Answer

Soil that is classified as A-1 consists mainly of sand and gravel. A-1, A-2, and A-3 categories of soil include granular materials. A-4, A-5 and A-6 soils contain mostly clay and silt. A-7 soils consist predominately of clay. A-8 soils are those which are composed of 15% or more of organic matter.

Question 6

Which of the following serves as the basic point of reference for the survey of a project?&#10;A)Centerline&#10;B)Offset line&#10;C)Benchmark line&#10;D)National Geodetic Survey marker

Accepted Answer

The basic point of reference for the survey of a project is the centerline. The elevations of points are established by a network of benchmarks through the use of a known elevation above sea level obtained on a National Geodetic Survey (NGS) marker. NGS markers, if located within the construction area, must be protected from damage.

Question 7

The alignment control points on a transportation construction project, such as Point of Intersection (P.I.) and Point on Tangent (P.O.T.), are referenced to which of the following?&#10;A)Right-of-way limit&#10;B)Centerline&#10;C)National Geodetic Survey marker&#10;D)Benchmark

Accepted Answer

The alignment control points on a transportation construction project are referenced to the centerline. On these projects, the centerline is typically marked with nails or stakes. Offsets and slope stakes are referenced for layout and grade control. While an inspector typically verifies the initial placement, it is the contractor's responsibility to preserve all stakes on a project.

Question 8

Which of the following terms is used to describe each layer of compacted material?&#10;A)Horizon&#10;B)Zone&#10;C)Lift&#10;D)All of the above

Accepted Answer

The term "lift" is used to describe each layer of compacted material. Typically, each lift is between 8 to 12 inches thick before compaction. If the soil to be compacted is too dry, water can be applied to increase the moisture content. Once a contractor believes the proper density has been achieved after compaction, he will request a density test to be taken.

Question 9

Which of the following is a concrete mix characteristic is commonly measured by its slump?&#10;A)Strength&#10;B)Consistency&#10;C)Hydration&#10;D)Durability

Accepted Answer

The consistency of a concrete mix is commonly measured by its slump. A slump test is performed on a concrete mix to determine its plasticity (ability to hold its shape).

Question 10

Which of the following best describes the yield of asphalt concrete?&#10;A)The weight of asphalt concrete spread over a given area&#10;B)The volume of asphalt concrete spread over a given area&#10;C)The area covered by asphalt concrete&#10;D)None of the above

Accepted Answer

The yield of asphalt concrete is best described as the weight of the asphalt concrete spread over a given area. The units for asphalt concrete yield are pounds/square yard (lb/yd²). The calculation for yield is expressed by the following equation: Yield = weight / area

Question 11

Which of the following best describes the contract term &#34;indemnify&#34;?&#10;A)Damage claims recovered from a contractor cannot exceed payments made to the contractor&#10;B)A contractor may be sued for reimbursement for damages incurred by a third-party&#10;C)To provide financial payment for damage or loss&#10;D)All of the above

Accepted Answer

The answer of Which of the following best describes the...

Deck 10: Material QC