Building Technology 4- Division 4 Masonry
The type of concrete you use varies with the purpose of the building and if not used correctly can lead to collapse of the building. Have you just covered division 3 on concrete under the building technology 3 class? Take up the test below and see how much of it you understand so far.
Questions and Answers
- 1.
_______ is a proportioned mixture of siliceous materials (sand, crushed stone) and cement (lime,Portland) which, after being prepared in a plastic state with water, hardens into a stonelike mass.
- A.
Mortar
- B.
Cement
- C.
Plaster
- D.
Grout
Correct Answer
A. MortarExplanation
Mortar is a mixture of siliceous materials and cement that, when combined with water, forms a plastic state that hardens into a stonelike substance. Mortar is commonly used in construction to bind bricks or stones together, providing structural integrity to buildings. Unlike cement, which is a component of mortar, mortar is a mixture that includes other materials like sand or crushed stone. Plaster is a different material used for coating walls and ceilings, and grout is used for filling gaps between tiles.Rate this question:
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- 2.
Is cement mix used to glue masonry units to each other, or other surface finishing materialslike tiles, bricks, stones to a receiving structure like a wall or floor.
- A.
Mortar
- B.
Cement
- C.
Plaster
- D.
Grout
Correct Answer
A. MortarExplanation
Mortar is the correct answer because it is a mixture of cement, sand, and water that is used to bind masonry units together or to attach surface finishing materials like tiles, bricks, or stones to a wall or floor. It acts as a glue that holds the materials in place and provides structural integrity to the construction. Cement, plaster, and grout are not specifically designed for this purpose and may not have the same adhesive properties as mortar.Rate this question:
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- 3.
_________ is mortar applied to wall surfaces as a preparation or a hard finish coat.
- A.
Plaster
- B.
Grout
- C.
Cement
Correct Answer
A. PlasterExplanation
Plaster is a type of mortar that is applied to wall surfaces as both a preparation coat and a hard finish coat. It is commonly used to create a smooth and even surface on walls before painting or wallpapering. Plaster is made by mixing cement, sand, and water, and it can be applied in multiple layers to achieve the desired thickness and texture. Once dry, plaster provides a durable and aesthetically pleasing finish to walls.Rate this question:
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- 4.
__________is a mortar of cementitious material (lime, gypsum or cement), sand and water which is applied in coats (layers) to masonry surfaces, lath or various types of plaster board to give a hard finish surface to interior or exterior walls and ceilings
- A.
Plaster
- B.
Cement mortar
- C.
Grout
Correct Answer
A. PlasterExplanation
Plaster is a mixture of cementitious material (lime, gypsum or cement), sand, and water. It is applied in layers to masonry surfaces, lath, or plaster boards to create a smooth and hard finish on interior or exterior walls and ceilings. Plaster is commonly used in construction to provide a decorative and protective coating.Rate this question:
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- 5.
Plastering is done according to two basic methods: two-coat and three-coat. A three-coat job consists of a first binding coat called
- A.
Scratch coat
- B.
Brown-coat
- C.
Finish coat
Correct Answer
A. Scratch coatExplanation
In plastering, the three-coat method is commonly used. The first coat applied is called the scratch coat. This coat is used to create a rough surface that helps the next coat, called the brown coat, adhere properly. The scratch coat also helps to level out any imperfections in the wall or surface being plastered. Once the scratch coat has dried, the brown coat is applied followed by the final coat, known as the finish coat. The scratch coat is an essential part of the three-coat plastering method as it provides a strong base for the subsequent coats.Rate this question:
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- 6.
Plastering is done according to two basic methods: two-coat and three-coat. A three-coat job consists of a second binding coat called
- A.
Scratch coat
- B.
Brown-coat
- C.
Finish coat
Correct Answer
B. Brown-coatExplanation
The correct answer is "brown-coat". In plastering, a three-coat job involves applying a second binding coat called the brown-coat. This coat is applied after the initial scratch coat and before the final finish coat. The brown-coat serves as a base for the finish coat and helps to create a smooth and even surface. It provides additional strength and stability to the plastered surface.Rate this question:
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- 7.
Astering is done according to two basic methods: two-coat and three-coat. A three-coat job consists of a third binding coat called
- A.
Scratch coat
- B.
Brown-coat
- C.
Finish coat
Correct Answer
C. Finish coatExplanation
The correct answer is "finish coat". In the two-coat method of plastering, only two coats are applied - a scratch coat and a finish coat. However, in the three-coat method, an additional coat called the finish coat is applied after the scratch coat and brown coat. The finish coat is the final layer of plaster that is applied to achieve a smooth and even surface.Rate this question:
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- 8.
Lime putty (hydrated lime and water). Mixed on the job with sand and gypsum plaster.Used for two and three-coat finish surfaces for interior walls and ceilings. what coat is this? "1 part lime putty, 1 part Portland cement or Keene’s cement, 2-3/4 partssand by weight."
- A.
Scratch coat
- B.
Brown coat
- C.
Finish coat
Correct Answer
A. Scratch coatExplanation
The given mixture of 1 part lime putty, 1 part Portland cement or Keene's cement, and 2-3/4 parts sand by weight is commonly known as a scratch coat. A scratch coat is the first coat applied to a surface, providing a rough base for the subsequent coats. It helps to create a strong bond between the surface and the following coats, such as the brown coat and finish coat.Rate this question:
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- 9.
Lime putty (hydrated lime and water). Mixed on the job with sand and gypsum plaster.Used for two and three-coat finish surfaces for interior walls and ceilings. what coat is this? "1 part lime putty, 1part Portland cement or Keene’s cement, 3 parts sandby weight."
- A.
Scratch coat
- B.
Brown coat
- C.
Finish coat
Correct Answer
B. Brown coatExplanation
The given mixture of 1 part lime putty, 1 part Portland cement or Keene's cement, and 3 parts sand by weight is commonly known as a brown coat. This coat is used as a base layer for interior walls and ceilings. It is applied after the scratch coat and provides a smooth and level surface for the final finish coat.Rate this question:
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- 10.
Plaster of Paris mixed with clay, lime and other materials incombinations covered by trademarks or patents. Mixed on the job with water, sand,lime putty, hair or fiber for two or three-coat finish surfaces for interior walls andceilings; or used dry as ingredient for hard or sand float finish with lime plaster
- A.
Gypsum plaster
- B.
Cement plaster
- C.
High-strength gypsum plaster.
- D.
Fibered gypsum plaster.
Correct Answer
A. Gypsum plasterExplanation
Gypsum plaster is the correct answer because it is a type of plaster that is commonly used for interior walls and ceilings. It is made by mixing plaster of Paris with clay, lime, and other materials. It can be mixed with water, sand, lime putty, hair, or fiber to create a two or three-coat finish. It can also be used dry as an ingredient for a hard or sand float finish with lime plaster. Gypsum plaster is known for its high strength and is often used in construction and renovation projects.Rate this question:
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- 11.
Gypsum plaster premixed with fibers. Mixed on the job with water and sand for scratch coat for three-coat plastering job.
- A.
Fibered gypsum plaster.
- B.
High-strength gypsum plaste
- C.
Prepared gypsum plaster.
- D.
Bonding plaster.
- E.
Lightweight gypsum plaster, fire-resistant plaster.
Correct Answer
A. Fibered gypsum plaster.Explanation
The correct answer is Fibered gypsum plaster. This is because the question states that the gypsum plaster is premixed with fibers, which indicates that it has added reinforcement for strength and durability. Additionally, it is mixed with water and sand for use as a scratch coat in a three-coat plastering job.Rate this question:
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- 12.
Same as gypsum plaster but mixed to meet established standards. Mixed on the job with water, sand, lime putty, hair or fiber for two and three-coat finish surfaces for both exteriors and interiors.
- A.
High-strength gypsum plaster.
- B.
Lightweight gypsum plaster, fire-resistant plaster.
- C.
Prepared gypsum plaster
- D.
Bonding plaster.
- E.
Fibered gypsum plaster.
Correct Answer
A. High-strength gypsum plaster.Explanation
High-strength gypsum plaster is the correct answer because it is mixed on the job with water, sand, lime putty, hair or fiber to meet established standards. It is used for two and three-coat finish surfaces for both exteriors and interiors. This type of plaster is known for its high strength and is commonly used in areas where durability is required. It is different from other options such as lightweight gypsum plaster, fire-resistant plaster, prepared gypsum plaster, bonding plaster, and fibered gypsum plaster, as they do not specifically mention the high strength characteristic.Rate this question:
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- 13.
Gypsum plaster mixed with fine white sand. Used for two and three-coat finish surfaces for interior walls and ceilings
- A.
High-strength gypsum plaster.
- B.
Lightweight gypsum plaster, fire-resistant plaster.
- C.
Prepared gypsum plaster
- D.
Bonding plaster.
- E.
Fibered gypsum plaster.
Correct Answer
C. Prepared gypsum plasterExplanation
Prepared gypsum plaster refers to a type of gypsum plaster that is ready to use without any additional mixing or preparation. It is commonly used for two and three-coat finish surfaces for interior walls and ceilings. This type of plaster is convenient and time-saving as it eliminates the need for measuring and mixing different ingredients. It provides a smooth and durable finish and is suitable for various applications in construction and renovation projects.Rate this question:
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- 14.
Gypsum plaster mixed with ingredients develops more adhesivestrength in combinations covered by trademarks or patents. Used for interior finish forsmooth concrete walls or ceilings. Mix and apply as per manufacturer’s directions.
- A.
High-strength gypsum plaster.
- B.
Lightweight gypsum plaster, fire-resistant plaster.
- C.
Prepared gypsum plaster
- D.
Bonding plaster.
- E.
Fibered gypsum plaster
Correct Answer
D. Bonding plaster.Explanation
Bonding plaster is the correct answer because it is specifically designed to provide a strong adhesive strength when used in combinations covered by trademarks or patents. It is used for bonding smooth concrete walls or ceilings during interior finishing. The other options, such as high-strength gypsum plaster, lightweight gypsum plaster, fire-resistant plaster, prepared gypsum plaster, and fibered gypsum plaster, may have different properties or uses, but they do not specifically mention the adhesive strength or bonding capabilities required in this context.Rate this question:
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- 15.
Gypsum plaster mixed on the job with water, perlite, vermiculite or other suitable mineral aggregate.it is used when weight is important, and for fire-proofing other materials such as steel. Applied on lath. For interior use only.
- A.
High-strength gypsum plaster.
- B.
Lightweight gypsum plaster, fire-resistant plaster.
- C.
Prepared gypsum plaster
- D.
Bonding plaster.
- E.
Fibered gypsum plaster
Correct Answer
B. Lightweight gypsum plaster, fire-resistant plaster.Explanation
The correct answer is "Lightweight gypsum plaster, fire-resistant plaster." This is because the given description mentions that gypsum plaster mixed with suitable mineral aggregate is used when weight is important and for fire-proofing other materials. This indicates that the plaster being referred to is lightweight and fire-resistant.Rate this question:
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- 16.
Plaster of Paris mixed with alum or borax or other materials andburned (calcined) at 932°F. Mixed on the job with water, lime putty and fine whitesand as hard finish for two and three-coat gypsum plaster. For interior use only
- A.
Fibered gypsum plaster
- B.
Keene's cement
- C.
Molding plaster.
- D.
Acoustics plaster.
- E.
Plaster of Paris.
Correct Answer
B. Keene's cement -
- 17.
For ornamental plaster work and castings. Mixed with water as permanufacturer’s directions.
- A.
Fibered gypsum plaste
- B.
Keene's cement
- C.
Molding plaster.
- D.
Acoustics plaster.
- E.
Plaster of Paris.
Correct Answer
C. Molding plaster.Explanation
Molding plaster is the correct answer because it is specifically used for ornamental plaster work and castings. It is mixed with water according to the manufacturer's directions to achieve the desired consistency and is commonly used in the process of creating intricate and detailed molds for decorative purposes.Rate this question:
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- 18.
Plaster For ornamental plaster work and castings
- A.
Fibered gypsum plaster
- B.
Keene's cement
- C.
Molding plaster.
- D.
Acoustics plaster.
- E.
Plaster of Paris.
Correct Answer
E. Plaster of Paris.Explanation
Plaster of Paris is the correct answer because it is a type of gypsum plaster that is commonly used for ornamental plaster work and castings. It is a white powder that can be mixed with water to form a paste that hardens quickly. Plaster of Paris is known for its smooth finish and ability to capture fine details, making it ideal for creating intricate decorative pieces.Rate this question:
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- 19.
Gypsum plaster mixed with other ingredients to develop small airthroughout the plaster in combinations covered by trademarks or patents. Used foracoustic treatment of interior walls and ceilings. Applied on gypsum plaster basecoats. Mix with water as per manufacturer’s directions.
- A.
Fibered gypsum plaster
- B.
Keene's cement
- C.
Molding plaster.
- D.
Acoustics plaster.
- E.
Plaster of Paris.
Correct Answer
D. Acoustics plaster.Explanation
Acoustic plaster is the correct answer because it is specifically mentioned in the given information that the plaster is used for acoustic treatment of interior walls and ceilings. This implies that the plaster is designed to enhance sound absorption and improve acoustics in a room. The other options, such as fibered gypsum plaster, Keene's cement, molding plaster, and Plaster of Paris, are not mentioned in relation to acoustic treatment and therefore do not fit the given description.Rate this question:
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- 20.
Mixed with water, sand and lime putty. Used for two and three-coat finish surfaces forexterior and interior walls and ceilings.
- A.
Portland cement plaster
- B.
Sgrafitto
- C.
Gypsum plater
- D.
Lime plaster
Correct Answer
A. Portland cement plasterExplanation
Portland cement plaster is the correct answer because it is a type of plaster that is mixed with water, sand, and lime putty. It is commonly used for both exterior and interior walls and ceilings, providing a durable and smooth finish. Portland cement plaster is known for its strength and versatility, making it a popular choice in construction and renovation projects.Rate this question:
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- 21.
In Portland cement plaster ,The second coat is the finish coat. The finish coat may be smooth or hard finish or, ifsand is added, called a____________
- A.
Trowel finish
- B.
Bull float finish
- C.
Sand float finish
- D.
Sand bull float finish
Correct Answer
C. Sand float finishExplanation
The correct answer is "sand float finish". In Portland cement plaster, the second coat is the finish coat, which can be smooth or hard finish. If sand is added to the finish coat, it is called a sand float finish. This type of finish provides a textured surface and is achieved by using a float to create a sandy appearance on the plaster.Rate this question:
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- 22.
is highly decorative type of plaster work developed in Italy during theRenaissance. This type of technique consists of applying two or three thin coats of plasterdifferent colors and then cutting away certain areas of one or two coats to produce athree-dimensional colored design.
- A.
Portland cement plaster
- B.
Sgrafitto
- C.
Gypsum plater
- D.
Lime plaster
Correct Answer
B. SgrafittoExplanation
Sgrafitto is a highly decorative type of plaster work developed in Italy during the Renaissance. This technique involves applying two or three thin coats of plaster in different colors and then cutting away certain areas of one or two coats to create a three-dimensional colored design.Rate this question:
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- 23.
The horizontal surfaces on which the stones or bricks of walls lie in the courses
- A.
Course
- B.
Bed
- C.
Wythe or Tier
- D.
Bond
Correct Answer
B. BedExplanation
The term "bed" refers to the horizontal surfaces on which the stones or bricks of walls lie in the courses. In other words, it is the layer or surface on which the individual units of a wall are placed. The bed provides stability and support for the wall structure, ensuring that the stones or bricks are properly aligned and connected. It is an essential component of the wall construction process.Rate this question:
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- 24.
A continuous layer of bricks, stones, or other masonry units.
- A.
Course
- B.
Bed
- C.
Wythe or Tier
- D.
Bond
Correct Answer
A. CourseExplanation
A course refers to a continuous layer of bricks, stones, or other masonry units. It is a horizontal row of these units that are laid one on top of the other. Courses are used to build walls, foundations, and other structures. Each course is typically leveled and aligned with the previous one to ensure stability and strength in the construction.Rate this question:
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- 25.
Each continuous, vertical section of the wall, one masonry unit thick.
- A.
Bed
- B.
Course
- C.
Wythe or Tier
- D.
Bond
Correct Answer
C. Wythe or TierExplanation
A wythe or tier refers to each continuous, vertical section of the wall that is one masonry unit thick. This term is commonly used in construction and masonry to describe the individual layers or sections of a wall. It helps to differentiate between the different layers and provides a way to discuss the construction and arrangement of the wall.Rate this question:
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- 26.
That connection between bricks, stones or other masonry units formed by lappingthem one upon another carrying up the work, so as to form an inseparable mass of building,by preventing the vertical joints falling over each other (also called a breaking joint).
- A.
Bed
- B.
Course
- C.
Wythe or Tier
- D.
Bond
Correct Answer
D. BondExplanation
The term "bond" refers to the connection between bricks, stones, or other masonry units in a building. It is formed by lapping them one upon another, carrying up the work, so as to form an inseparable mass. The purpose of the bond is to prevent the vertical joints from falling over each other, ensuring stability and strength in the structure. It is also known as a breaking joint.Rate this question:
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- 27.
A brick or block masonry laid lengthwise of a wall.
- A.
Soldier
- B.
Heading course
- C.
Stretcher
- D.
Header
Correct Answer
C. StretcherExplanation
A stretcher is a brick or block masonry that is laid lengthwise of a wall. It is called a stretcher because it stretches along the length of the wall. In contrast, a header is a brick or block masonry that is laid widthwise of a wall. Therefore, the correct answer is stretcher.Rate this question:
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- 28.
A brick or block masonry extending over the thickness of the wall.
- A.
Header
- B.
Stretcher
- C.
Heading course
- D.
Soldier
Correct Answer
A. HeaderExplanation
A header is a brick or block that is laid with its end facing outwards, extending over the thickness of the wall. It is typically used to provide strength and stability to the wall, as well as to create a decorative pattern or design. Headers are often used in conjunction with stretchers, which are bricks or blocks laid with their long sides facing outwards, to create a strong and visually appealing masonry structure. The other options, such as stretcher, heading course, and soldier, do not accurately describe the specific type of masonry mentioned in the question.Rate this question:
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- 29.
A course in which the bricks or other masonry units are all headers
- A.
Header
- B.
Stretcher
- C.
Heading course
- D.
Soldier
Correct Answer
C. Heading courseExplanation
A heading course is a type of masonry course where all the bricks or masonry units are laid with their headers facing outwards. In this course, the short end of the brick is visible on the face of the wall, creating a neat and uniform appearance. This type of course is commonly used in decorative or architectural masonry work to enhance the visual appeal of the structure.Rate this question:
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- 30.
A unit laid on its end with its face perpendicular to the face of the wall.
- A.
Stretcher
- B.
Heading course
- C.
Soldier
- D.
Header
Correct Answer
C. SoldierExplanation
A soldier is a brick that is laid on its end with its face perpendicular to the face of the wall. This positioning allows for a stronger and more stable structure. The other options, stretcher, heading course, and header, do not describe this specific positioning of the brick.Rate this question:
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- 31.
The corner stones at the angles of buildings, usually rusticated so as to project fromthe normal surface of the wall.
- A.
Blocking or Blocking Course
- B.
Quoins
- C.
Bond Stones
- D.
Heading course
Correct Answer
B. QuoinsExplanation
Quoins are the correct answer because they are the corner stones at the angles of buildings. These stones are usually rusticated, meaning they are made to project from the normal surface of the wall. Quoins are used to provide visual interest and add strength to the corners of buildings.Rate this question:
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- 32.
Stones running through the thickness of the wall at right angles to its face, inorder to bind it together.
- A.
Blocking or Blocking Course
- B.
Quoins
- C.
Bond Stones
- D.
Heading course
Correct Answer
C. Bond StonesExplanation
Bond stones are stones that run through the thickness of a wall at right angles to its face, in order to bind it together. They are essential for providing structural stability and preventing the wall from collapsing or separating. By interlocking with the surrounding stones, bond stones help distribute the weight and forces evenly throughout the wall, making it stronger and more durable.Rate this question:
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- 33.
Masonry of rough, undressed stones. When only the roughest irregularitiesare knocked off, it is called scabbled rubble, and when the stones in each course arerudely dressed to a nearly uniformheight, range rubble.
- A.
Rubble work.
- B.
Random work.
- C.
Ashlar.
- D.
Rustic or Rock work.
Correct Answer
A. Rubble work.Explanation
The given answer "Rubble work" is the most appropriate choice because it accurately describes the masonry technique being discussed in the passage. The passage explains that rubble work involves using rough, undressed stones where only the roughest irregularities are knocked off. This aligns with the definition of rubble work and distinguishes it from other options such as random work, ashlar, or rustic/rock work.Rate this question:
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- 34.
Stones fitted together at random withoutany attempt to lay them in course.
- A.
Rubble work.
- B.
Random work
- C.
Ashlar.
- D.
Rustic or Rock work.
Correct Answer
B. Random workExplanation
Random work refers to stones that are fitted together without any attempt to lay them in a specific pattern or course. This type of construction is often seen in rubble work, where stones of different shapes and sizes are used to create a rough, irregular appearance. Random work can also be referred to as rustic or rock work, as it gives a natural and unrefined look to the structure.Rate this question:
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- 35.
Squared stones in regular courses, in contradistinction to rubble work.
- A.
Rubble work.
- B.
Random work
- C.
Ashlar.
- D.
Rustic or Rock work.
Correct Answer
C. Ashlar.Explanation
Ashlar refers to squared stones that are arranged in regular courses, as opposed to rubble work or random work where stones are not cut or shaped uniformly. Ashlar masonry is characterized by its clean, precise lines and smooth surfaces, making it a popular choice for creating a polished and refined appearance in buildings. The other options, rubble work and random work, refer to masonry styles where stones are used in their natural form without much shaping or uniformity. Rustic or rock work typically involves using irregularly shaped stones to create a more rugged or naturalistic look.Rate this question:
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- 36.
Courses of stone face of which is jagged picked so as to present a rough surface.
- A.
Rubble work.
- B.
Random work
- C.
Ashlar.
- D.
Rustic or Rock work.
Correct Answer
D. Rustic or Rock work.Explanation
Rustic or Rock work is the correct answer because it refers to the technique of using stones with jagged surfaces to create a rough and natural-looking finish. This type of work is commonly used in landscaping or construction projects where a more rugged and organic aesthetic is desired. The term "rubble work" refers to the use of irregularly shaped stones, while "random work" generally refers to a more random arrangement of stones. Ashlar, on the other hand, refers to the use of finely cut and precisely shaped stones.Rate this question:
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- 37.
Are structural units of clay or shale formed while plastic and subsequently fired.
- A.
Stones
- B.
Bricks
- C.
Marble
- D.
Granite
Correct Answer
B. BricksExplanation
Bricks are structural units of clay or shale that are formed while in a plastic state and then fired. This firing process gives bricks their strength and durability, making them suitable for construction purposes. Unlike stones, marble, and granite, which are natural materials, bricks are man-made and can be manufactured in various sizes and shapes to suit different building needs. Therefore, bricks are the correct answer in this context.Rate this question:
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- 38.
Bricks that Used for all purposes, including facing.
- A.
Glazed brick.
- B.
Facing brick.
- C.
Common or building brick
- D.
Fire (refractory) brick.
Correct Answer
C. Common or building brickExplanation
Common or building brick is the correct answer because it is stated in the given options that it is used for all purposes, including facing. This implies that common or building bricks are versatile and can be used for various construction purposes, including as facing material.Rate this question:
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- 39.
Specially processed to give certain specific surface characteristics. Usedfor exposed masonry surfaces.
- A.
Glazed brick.
- B.
Facing brick.
- C.
Common or building brick
- D.
Fire (refractory) brick.
Correct Answer
B. Facing brick.Explanation
Facing brick is the correct answer because it is specially processed to give specific surface characteristics, making it suitable for exposed masonry surfaces. Glazed brick refers to bricks with a smooth and shiny surface due to a glaze coating. Common or building brick is a general term for regular bricks used in construction. Fire (refractory) brick is designed to withstand high temperatures and is used in fireplaces and kilns. Therefore, facing brick best fits the description provided.Rate this question:
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- 40.
These have a smooth outer surface with a dull satin or high gloss finish.They are load bearing, fire resisting, and impervious. They are usually formed withvertical hollow cores through the body with scoring on theback.
- A.
Glazed brick
- B.
Facing brick
- C.
Common or building brick
- D.
Fire (refractory) brick.
Correct Answer
A. Glazed brickExplanation
Glazed brick is the correct answer because it is the only option that matches the description of having a smooth outer surface with a dull satin or high gloss finish. The other options, facing brick, common or building brick, and fire (refractory) brick, do not mention anything about a glazed finish.Rate this question:
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- 41.
These are ordinarily made from amixture of flint clay and plastic clay, and are used for thelining of furnaces, fireplaces, and chimneys.
- A.
Glazed brick
- B.
Facing brick
- C.
Common or building brick
- D.
Fire (refractory) brick.
Correct Answer
D. Fire (refractory) brick.Explanation
Fire (refractory) bricks are specifically designed to withstand high temperatures and are commonly used for lining furnaces, fireplaces, and chimneys. They are made from a mixture of flint clay and plastic clay, which gives them excellent heat resistance and durability. Glazed bricks, facing bricks, and common or building bricks are not suitable for such applications as they do not have the same level of heat resistance.Rate this question:
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- 42.
Consists of five stretcher courses and then a header course. It is generally begun with a row of headers at the bottom course
- A.
Common Bond.
- B.
English Bond.
- C.
Flemish Bond.
- D.
Herring-bone
Correct Answer
A. Common Bond.Explanation
Common Bond is the correct answer because it consists of five stretcher courses and then a header course. This pattern is generally started with a row of headers at the bottom course. The other options, English Bond, Flemish Bond, and Herring-bone, do not follow this specific arrangement of stretcher and header courses.Rate this question:
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- 43.
Consists of alternate courses of stretchers and headers
- A.
Common Bond.
- B.
English Bond.
- C.
Flemish Bond.
- D.
Herring-bone
Correct Answer
B. English Bond.Explanation
English Bond is a type of brickwork pattern that consists of alternate courses of stretchers and headers. In this bond, the headers are centered on the stretchers in each course, creating a strong and stable structure. This bond is commonly used in traditional English architecture and provides a pleasing aesthetic appearance. The other options listed, such as Common Bond, Flemish Bond, and Herring-bone, do not consist of alternate courses of stretchers and headers, making English Bond the correct answer.Rate this question:
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- 44.
Consists of alternate headers and stretchers in each course
- A.
Common Bond
- B.
English Bond.
- C.
Flemish Bond.
- D.
Herring-bone
Correct Answer
C. Flemish Bond.Explanation
Flemish Bond is the correct answer because it consists of alternate headers and stretchers in each course. This means that in each row or course of bricks, the headers (bricks placed with their ends facing outwards) alternate with the stretchers (bricks placed with their long sides facing outwards). This creates a visually appealing pattern and also provides structural stability to the wall. In contrast, Common Bond consists of alternating courses of headers and stretchers, English Bond consists of alternating courses of headers and stretchers with each header centered over the stretcher, and Herringbone consists of bricks laid in a zigzag pattern.Rate this question:
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- 45.
The bricks are laid diagonally to form a herring-bone pattern.
- A.
Common Bond
- B.
English Bond.
- C.
Flemish Bond.
- D.
Herring-bone
Correct Answer
D. Herring-boneExplanation
The correct answer is Herring-bone because it is the pattern formed when bricks are laid diagonally. This pattern is characterized by a series of V-shaped formations that resemble the bones of a fish, hence the name "herring-bone". The other options, Common Bond, English Bond, and Flemish Bond, are different types of brick bonding patterns but do not involve laying the bricks diagonally.Rate this question:
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- 46.
Hollow masonry unit, with two or three cells or cores,made of the following ingredients: water, Portland cement, and various typesof aggregate such as sand, gravel, and crushed stone
- A.
Bricks
- B.
Concrete block
- C.
Tile blocks
Correct Answer
B. Concrete blockExplanation
The given description mentions a masonry unit with multiple cells or cores made of water, Portland cement, and different types of aggregate. This matches the characteristics of a concrete block, which is commonly used in construction. Therefore, the correct answer is concrete block.Rate this question:
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- 47.
defines the aggregates used in concrete masonry units.
- A.
ASTM C200
- B.
ASTM C150
- C.
ASTM- C331
- D.
ASTM C330
Correct Answer
C. ASTM- C331Explanation
ASTM C331 is the correct answer because it defines the aggregates used in concrete masonry units. ASTM C200, ASTM C150, and ASTM C330 are not relevant to this specific topic.Rate this question:
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- 48.
Reinforcement for 100mm (4”) and150mm (6”) wall concrete blocks shall be 10mm (3/8”) ∅ vertical bars at 600mm (24”) on centers and 3/8”∅ horizontal bars every_____ course.
- A.
Second course
- B.
Third course
- C.
First course
- D.
Fourth course
Correct Answer
B. Third courseExplanation
The correct answer is "third course". The explanation for this is that reinforcement for the wall concrete blocks consists of 10mm (3/8") vertical bars at 600mm (24") on centers and 3/8" horizontal bars. These horizontal bars are placed every third course of the wall.Rate this question:
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- 49.
For 8” walls, reinforcement shall be ½”∅ vertical bars at 24” on centers and ___”∅ horizontal bars every third course.
- A.
1/4
- B.
1/2
- C.
3/4
- D.
3/8
Correct Answer
B. 1/2Explanation
For 8" walls, the reinforcement consists of ½" diameter vertical bars placed at 24" intervals, and ___" diameter horizontal bars placed every third course. The correct answer is 1/2" because it completes the sentence and provides the missing information about the diameter of the horizontal bars.Rate this question:
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- 50.
Concrete block walls should have a reinforced concrete ________course every twelfth course.
- A.
Jamb block
- B.
Lintel or beam block
- C.
Corner block
Correct Answer
B. Lintel or beam blockExplanation
In order to ensure the structural integrity and strength of a concrete block wall, it is necessary to incorporate a reinforced concrete lintel or beam block every twelfth course. This additional block provides support and reinforcement to the wall, preventing it from cracking or collapsing under pressure. The lintel or beam block acts as a horizontal beam, distributing the load evenly and enhancing the overall stability of the wall.Rate this question:
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Mar 22, 2023Quiz Edited by
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Sep 11, 2010Quiz Created by
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