79 Questions
What material is used to fabricate wire-enclosed riprap in a gabion system?
Wire mesh
Which term refers to the practice of wrapping riprap to allow the use of smaller rocks with the same water energy resistance as larger rocks?
Barriers
In termite/bukbok proofing, what system relies on physical barriers to protect against termites?
Bituminous Surfacing
Which material is particularly advantageous in areas inaccessible to trucks or large construction equipment?
Choker aggregate
What is the main purpose of a gabion system in construction?
Erosion control
What does the acronym ASTM stand for?
American Society for Testing Materials
Which material is used for erosion control and slope stabilization?
All of the above
What is the purpose of a choker aggregate in road construction?
To provide a smooth surface for paving
Which of the following is a type of termite proofing method?
All of the above
What is the purpose of a base course in road construction?
To distribute vehicle loads to the subgrade
What type of material is used for the Base Course according to the text?
Stone and sand
Which AASHTO methods are required for the Base Course Grading according to the text?
T-11 and T-26
What is used for Termite Proofing according to the text?
Chemical Barrier
What is the purpose of Gabion as mentioned in the text?
Erosion Control
Which material is NOT suitable for use in the Base Course as per the text?
Vegetable matter
What is the purpose of granular fill or filters in construction?
To prevent the movement of fine particles out of soils and other natural materials through which seepage occurs
Which of the following materials is considered borrow fill?
Selected laboratory-approved pit-run gravel, disintegrated granite, sand, shale, cinders or other similar materials
Which section of the text discusses termite/bukbok proofing methods?
2.TERMITE/BUKBOK PROOFING
What is the maximum fraction passing the No. 200 sieve allowed for borrow fill materials?
35%
Which section of the text discusses paving and surfacing materials?
3.ROADS & PARKING
What is the formula to calculate the Plasticity Index (PI)?
Liquid Limit - Plastic Limit = PI
Which Unified Soil Classification System (USCS) category includes Gravels with > 50% retained on No. 200 sieve and > 50% further retained on No.40 sieve?
GW
What is the term used for soil, crushed stone, and sand used to raise an existing grade or as a man-made deposit under footings or concrete slabs on grade?
Fill Material
In Termite Proofing, which method involves using physical barriers to prevent termite infestations?
Physical Barrier
Which term refers to the range of water content over which sediment behaves in construction materials?
Plasticity Index
What is the primary purpose of riprap?
To prevent erosion, scour or sloughing
What is the typical size range for riprap aggregate?
50mm to 1148mm
What factors influence the resistance of riprap to displacement by moving water?
Both A and B
What is the primary concern when selecting riprap material?
Soundness and freedom from defects or impurities
What is the term 'riprap' commonly used to refer to?
The stone used for the lining
Which of the following is NOT a factor in determining the resistance of riprap to displacement?
Color of the stone
What is the purpose of a filter blanket in riprap construction?
To separate the riprap from the underlying soil
Which of the following is NOT a characteristic of sound riprap material?
Highly porous
What is the primary function of riprap in construction?
Erosion control
Which of the following is NOT a factor in determining the appropriate riprap gradation?
Stone color
Which type of soil particle is the largest?
Boulders
What is the purpose of the AASHTO soil classification system mentioned in the text?
To classify soils based on their suitability as subgrade materials
What is the purpose of the Atterberg Limits tests described in the text?
To determine the transition points between liquid, plastic, and solid states of a soil
Which type of soil particle is the smallest?
Silt-Clay Particles
What is the primary purpose of oiling the lumber forms before they are set in place?
To prevent concrete from adhering to the wood and create a rough, unpleasant appearance
When should oil not be used on forms against surfaces that will be plastered?
When the plastered surface needs to adhere well to the concrete
What is the recommended method for preparing forms that have been used once and will be used again?
Both a and b
What is the purpose of using a lubricant on the forms for concrete?
To make it easier to remove the forms after the concrete has hardened
What is the main purpose of wetting the forms with water instead of using oil when the concrete surface will be plastered?
To ensure the plaster adheres properly to the concrete surface
What is the primary reason for coating the inside of reused forms with an approved soap or other material?
To make it easier to remove the forms after the concrete has hardened
What is the primary purpose of using crude oil or petroline on the forms?
To preserve the forms against damage by alternate wetting and drying
When should oil not be used on the forms for concrete?
When the concrete surface will be plastered
What is the proportion of cement to fine aggregate to coarse aggregate for Class 'A' concrete?
1 : 2 : 4
Which class of concrete is recommended for mass concrete works?
Class 'D'
What is the equivalent measure of one 'part' in the concrete proportions?
One cubic foot
For which type of concrete structure is the Class 'C' proportion (1:3:6) recommended?
Non-critical concrete structures
How many bags of cement are approximately equivalent to one cubic foot?
1 bag
Which class of concrete is recommended for concrete under water and retaining walls?
Class 'AA'
What is the proportion of cement to fine aggregate to coarse aggregate for Class 'B' concrete?
1 : 2.5 : 5
Which class of concrete is recommended for walls thicker than 100mm (4"), footings, steps, and reinforced concrete slabs on fill?
Class 'B'
What is the main purpose of using cinders in concrete?
To provide weight savings
Which of the following is NOT a property of lightweight cinders?
High combustible content
What is the main component of cinders?
A mixture of ash and combustible matter
Which type of concrete is best suited for weight-saving applications?
Concrete made with haydite (expanded clay or shale)
What is the main advantage of using cinders in concrete, as mentioned in the text?
Weight savings
Which of the following is NOT a type of lightweight aggregate mentioned in the text?
Crushed stone
Which of the following properties are often unsound in lightweight cinders?
Physical and chemical properties
What is the primary reason for using cinders in concrete, as mentioned in the text?
To decrease the weight of the concrete
What is the primary purpose of using sheathing lumber dressed on all four sides?
To provide a smooth and true surface where appearance is important
What type of lumber is recommended for achieving tight joints in floor and wall panel construction?
Tongue-and-groove lumber
Which of the following lumber sizes is typically used for struts, posts, shores, and uprights?
2x4s
Which of the following statements is true regarding the use of nails in form construction?
Use nails sparingly to facilitate easy wrecking and re-use of lumber
What is the recommended practice when using nails in form construction?
Leave the nail head protruding for easy removal without damaging the lumber
Which of the following cementing materials is mentioned in the text?
Lime
What is the purpose of curing concrete?
To control the rate and extent of shrinkage
Which of the following is a type of processed concrete mentioned in the text?
Lightweight concrete
Which method of proportioning concrete is described as the oldest, most commonly used, and least scientific?
Proportioning by arbitrary proportions
In the arbitrary proportioning method, how are the aggregates measured?
By volume
What is the standard unit used to measure the quantity of cement in the arbitrary proportioning method?
1 sack
What is the purpose of adding water in the arbitrary proportioning method?
To increase the workability of the concrete
Which section of the text provides an overview of the different types of processed concrete?
Section 4.01 Types of Processed Concrete
Which of the following is NOT mentioned as a quality of good concrete in the text?
Resistance to weathering
What is the purpose of the Slump Test described in the text?
To assess the workability of the concrete
Which section of the text discusses the materials used to make concrete?
Section 3.03 Materials of Concrete
Test your knowledge on various construction materials and techniques including earthworks, termite proofing, and roads & parking. Learn about acronyms, definitions, standard tests, riprap, gabion, geosynthetics, erosion control materials, and more.
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