Building Technology 5 Division 5 Metals
Building technology
Questions and Answers
- 1.
Is a soft, nonmagnetic silvery metal characterized by its light weight (onethird that of iron, brass or copper), low melting point high thermal and electricalconductivity (surpassed only by silver and copper), and moderately high coefficientof expansion.
- A.
Brass
- B.
Aluminum
- C.
Copper
- D.
Silver
Correct Answer
B. AluminumExplanation
Aluminum is the correct answer because it is a soft, nonmagnetic silvery metal that has a low melting point, high thermal and electrical conductivity, and a moderately high coefficient of expansion. It is also known for its light weight, being one-third that of iron, brass, or copper. Aluminum's properties make it a versatile material used in various industries, including construction, transportation, and packaging.Rate this question:
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- 2.
Is a term applied to certain aluminum products and refersto the protective coating (cladding) applied, primarily for corrosionresistance, to thin sheets of an alloy whose corrosion resistancehas been decreased by the constituents added to give strength and othercharacteristics. Cladding improves the appearance of the alloy
- A.
ALCLAD
- B.
Cladding
- C.
Alloy
- D.
ACLAD
Correct Answer
A. ALCLADExplanation
ALCLAD is a term used to describe a protective coating applied to thin sheets of an aluminum alloy. This coating is primarily applied to enhance corrosion resistance, as the alloy's resistance has been decreased by the addition of certain constituents for strength and other properties. The cladding not only provides protection against corrosion but also improves the overall appearance of the alloy.Rate this question:
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- 3.
Aluminum used for roofing, flashing, gutter, etc.
- A.
ALUMINUM FOIL
- B.
ALUMINUM SHEET AND STRIP,
- C.
STRUCTURAL ALUMINUM.
- D.
ALUMINUM DOORS AND WINDOWS.
Correct Answer
B. ALUMINUM SHEET AND STRIP,Explanation
The correct answer is "ALUMINUM SHEET AND STRIP." This is because aluminum sheet and strip are commonly used for roofing, flashing, gutter, and other applications mentioned in the question. Aluminum foil is typically used for cooking and packaging, while structural aluminum is used for construction purposes. Aluminum doors and windows are specifically mentioned as a separate category. Therefore, the most appropriate choice is aluminum sheet and strip.Rate this question:
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- 4.
Which is rolled to a thickness of 0.005” (above 0.005” it is technically considered to be sheet) and is used mainly for thermal insulation and vapor barriers. It may serve also as a surface finish material when laminated to various sheet and board materials. In this form it also suppliesadditional insulation value to the sheet or board.
- A.
ALUMINUM FOIL
- B.
ALUMINUM SHEET AND STRIP,
- C.
STRUCTURAL ALUMINUM.
- D.
ALUMINUM DOORS AND WINDOWS.
Correct Answer
A. ALUMINUM FOILExplanation
Aluminum foil is the correct answer because it is rolled to a thickness of 0.005", which is considered to be foil rather than sheet. It is commonly used for thermal insulation and vapor barriers. Additionally, it can be laminated to other materials to provide additional insulation. The other options listed, such as aluminum sheet and strip, structural aluminum, and aluminum doors and windows, do not fit the description given in the question.Rate this question:
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- 5.
This is rigidized sheet fabricated of special aluminum alloys specifically developed for roofing and siding purposes. It usually consists of an aluminum alloy core of one type cladwith another highly corrosion-resistant aluminum.
- A.
ALUMINUM FOIL
- B.
CORRUGATED ALUMINUM.
- C.
STRUCTURAL ALUMINUM.
- D.
ALUMINUM DOORS AND WINDOWS.
Correct Answer
B. CORRUGATED ALUMINUM.Explanation
The given description mentions that the material is a sheet made of a special aluminum alloy, designed for roofing and siding. It also states that it consists of an aluminum alloy core clad with another highly corrosion-resistant aluminum. Based on these details, the most suitable option is "CORRUGATED ALUMINUM." Corrugated aluminum sheets are commonly used for roofing and siding purposes due to their durability, strength, and resistance to corrosion.Rate this question:
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- 6.
When aluminum is used as a structuralmaterial, several important factors enter into the design considerations,all of them arising from its physical and chemical characteristics.Aluminum can be extruded, therefore a structural shape can beproduced economically to meet the specified structural designrequirements.
- A.
ALUMINUM FOIL
- B.
CORRUGATED ALUMINUM.
- C.
STRUCTURAL ALUMINUM.
- D.
ALUMINUM DOORS AND WINDOWS.
Correct Answer
C. STRUCTURAL ALUMINUM.Explanation
Aluminum can be extruded, meaning it can be shaped into structural forms economically. This makes it a suitable material for structural applications, such as in the construction of buildings, bridges, and other load-bearing structures. Its physical and chemical characteristics make it a desirable choice for these applications, as it is lightweight, corrosion-resistant, and has good strength-to-weight ratio. Therefore, the correct answer is "STRUCTURAL ALUMINUM."Rate this question:
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- 7.
These are generally fabricated from extrusions and rolled shapes.
- A.
ALUMINUM FOIL
- B.
CORRUGATED ALUMINUM.
- C.
STRUCTURAL ALUMINUM.
- D.
ALUMINUM DOORS AND WINDOWS
Correct Answer
D. ALUMINUM DOORS AND WINDOWSExplanation
The given correct answer, "ALUMINUM DOORS AND WINDOWS," fits the description provided in the question. The question states that the items are "fabricated from extrusions and rolled shapes," which is a common manufacturing process for aluminum doors and windows. This suggests that these items are made from aluminum and are formed using these techniques. Therefore, the answer aligns with the information given.Rate this question:
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- 8.
Pre-fabricated units which are generallymanufactured on modular and non-modular window-widthdimensions for the exterior of buildings and generally in 2’, 3’, and4’ widths for interior partitions and dividers. Panels for the exteriorof buildings primarily consist of an aluminum exterior facing whichmay be an aluminum casting, an extrusion or sheet material whichhas been pressed, stamped or formed into specially design shapes.
- A.
ALUMINUM FOIL
- B.
STRUCTURAL ALUMINUM.
- C.
ALUMINUM PANELS
- D.
CORRUGATED ALUMINUM.
Correct Answer
C. ALUMINUM PANELSExplanation
The given passage describes pre-fabricated units that are manufactured for the exterior and interior of buildings. These units are made of aluminum and come in various widths. The panels for the exterior of buildings are specifically made with an aluminum exterior facing, which can be in the form of a casting, extrusion, or sheet material. Therefore, the correct answer is "ALUMINUM PANELS" as it aligns with the description provided in the passage.Rate this question:
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- 9.
A sandwich panel, on the other hand, comprises a system ofconstruction called
- A.
Face construction
- B.
Balat construction
- C.
Skin cpnstruction
Correct Answer
C. Skin cpnstructionExplanation
A sandwich panel is a type of construction that consists of two outer layers, called skins, that are bonded to a central core material. The skins provide the structural integrity and protection to the panel, while the core material adds insulation and strength. Therefore, the correct answer is "skin construction" as it accurately describes the construction method of a sandwich panel.Rate this question:
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- 10.
Many kinds of rods, bars, pipes, railings,fittings, and special shapes are manufactured as stock items for use inornamental design of railings, grilles, screens, etc.
- A.
ALUMINUM FOIL
- B.
ALUMINUM PANELS
- C.
Ornamental aluminum.
- D.
Aluminum Mesh and Wire Cloth
Correct Answer
C. Ornamental aluminum.Explanation
The given question states that various items like rods, bars, pipes, railings, fittings, and special shapes are manufactured as stock items for ornamental design purposes. The correct answer, "Ornamental aluminum," aligns with this information as it suggests that aluminum is one of the materials used for creating these decorative items.Rate this question:
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- 11.
Aluminum frinished that a can be obtained bygrinding polishing, scratching, sandblasting, embossing, or othertreatment of the surface to achieve a desired effect or to provide abase for other finishes.
- A.
Mechanical finishes.
- B.
Chemical finishes.
- C.
Electrolytic finishes.
- D.
Electroplating
Correct Answer
A. Mechanical finishes.Explanation
The given answer, "Mechanical finishes," is the correct answer because it states that aluminum finishes can be achieved through grinding, polishing, scratching, sandblasting, embossing, or other treatments of the surface. These methods involve physical manipulation of the surface to achieve the desired effect or provide a base for other finishes. This distinguishes mechanical finishes from chemical finishes, electrolytic finishes, and electroplating, which involve different processes or treatments to achieve the desired result on the aluminum surface.Rate this question:
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- 12.
Aluminum finishes that are based on chemical reactions withthe aluminum surface to achieve one of the following results: (a)Floor Panel Wall PanelOrnamental AluminumAluminum Mesh andWire ClothPig Ironetching, cleaning, or polishing of the surface to remove any oxide filmor surface irregularity and provide a design, a clean surface texture, ora polished effect; and (b) oxidizing of the surface with aluminum orother metallic oxides that protect the surface or serve as a base forsubsequent treatment, or both. Chemical finishes permit only limitedcolors that are not as satisfying as the color films obtained onelectrolytically-applied (anodized) oxide films
- A.
Mechanical finishes.
- B.
Chemical finishes.
- C.
Electrolytic finishes.
- D.
Electroplating
Correct Answer
B. Chemical finishes.Explanation
Chemical finishes are based on chemical reactions with the aluminum surface to achieve various results such as etching, cleaning, or polishing the surface to remove oxide film or surface irregularities. These finishes provide a design, clean surface texture, or polished effect. They can also involve oxidizing the surface with aluminum or other metallic oxides, which serve as a protective layer or a base for subsequent treatment. However, chemical finishes have limited color options compared to electrolytically-applied oxide films obtained through anodization.Rate this question:
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- 13.
Commonly referred to as anodized finishes, thesefinishes are based on the specific ability of aluminum to develop aprotective coating of oxide on its surface. The coating formed may betransparent or opaque. It is hard, yet when colored finishes are desired,it is porous enough to absorb dyes until the final treatment which sealsthe surface. Of the colors used in anodic treatments, architectural,architectural gold has proven to be one of the most stable from thestandpoint of fade resistance. Others are blue and, more recently,brown and black
- A.
Mechanical finishes.
- B.
Chemical finishes.
- C.
Electrolytic finishes.
- D.
Electroplating
Correct Answer
C. Electrolytic finishes.Explanation
Electrolytic finishes are the correct answer because the passage mentions that anodized finishes are based on the ability of aluminum to develop a protective coating of oxide on its surface. This process involves the use of electrolysis, where an electric current is passed through an electrolyte solution to create the protective coating. Therefore, electrolytic finishes are the most suitable option based on the information provided.Rate this question:
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- 14.
Aluminum can be covered with a protective ordecorative film or another metal, usually by electrodeposition. In thecase of copper and nickel, the coating should be complete andunbroken; otherwise there will be galvanic action which is destructive toaluminum.
- A.
Mechanical finishes.
- B.
Chemical finishes.
- C.
Electrolytic finishes.
- D.
Electroplating
Correct Answer
D. ElectroplatingExplanation
Electroplating is the correct answer because it involves covering aluminum with a protective or decorative film or another metal through the process of electrodeposition. This process ensures that the coating is complete and unbroken, preventing galvanic action that can be destructive to aluminum. Mechanical finishes, chemical finishes, and electrolytic finishes do not specifically involve the process of electrodeposition, making them incorrect answers.Rate this question:
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- 15.
This finish forms a hard, resistantsurface. It is available in a broad color range that creates a differentfeeling in that colors are glassy, whereas anodic color is metallic innature.
- A.
Paint
- B.
Electroplating
- C.
Porcelain or Vitreous Enamel.
- D.
Electrolytic finishes.
Correct Answer
C. Porcelain or Vitreous Enamel.Explanation
Porcelain or Vitreous Enamel is the correct answer because it is a finish that forms a hard, resistant surface. It is also available in a broad color range, creating a different feeling compared to anodic color, which is metallic in nature. This suggests that Porcelain or Vitreous Enamel is a suitable option for achieving a glassy, non-metallic finish.Rate this question:
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- 16.
Paint, lacquer and enamel can be applied as finishes toaluminum surfaces that have been prepared by a suitable chemicaltreatment finish. Lead base paints must not be used on aluminum
- A.
Paint
- B.
Electroplating
- C.
Porcelain or Vitreous Enamel.
- D.
Electrolytic finishes.
Correct Answer
A. PaintExplanation
Paint can be applied as a finish to aluminum surfaces that have been prepared by a suitable chemical treatment. This means that before applying the paint, the aluminum surface needs to be treated with a chemical process to ensure proper adhesion and durability of the paint. It is important to note that lead-based paints should not be used on aluminum surfaces.Rate this question:
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Aug 30, 2023Quiz Edited by
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Sep 11, 2010Quiz Created by
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