Building Technology Exam: Trivia Quiz!

Blistering is the correct answer because it refers to the swelling and subsequent breakage and peeling of a film. This phenomenon is commonly observed in coatings or films, where the surface develops small bubbles or blisters due to various factors such as moisture, heat, or chemical reactions. Blistering can compromise the integrity and appearance of the film, leading to a need for repairs or reapplication.

The correct answer is b. Class "A". This is because Class "A" concrete mix is specifically designed for structural elements such as beams, girders, slabs, stairs, and columns. It has a higher strength and durability compared to other classes of concrete mixes, making it suitable for load-bearing purposes.

Wood coming out from trees with needle leaves, rather than broad leaves, is called softwood. Softwood is derived from gymnosperm trees, which include coniferous trees like pine, fir, and spruce. These trees have needle-like leaves and produce wood that is generally less dense and lighter in weight compared to hardwood. Softwood is commonly used for construction, furniture, and paper production due to its availability, affordability, and ease of working with.

The correct answer is c. rebokada. Rebokada is the vernacular term for rough plastering. It refers to the process of applying a rough layer of plaster to a wall or surface to create texture and prepare it for further finishing or painting.

The hardware on a door that is designed to accommodate the knob and lockset keyhole is called an escutcheon. An escutcheon is a decorative plate that surrounds the keyhole and provides a finished appearance to the door. It is typically made of metal and is available in various designs and finishes to match the overall aesthetic of the door.

Obscured glass has one or both sides acid-etched or sand blasted, which weakens the glass and makes it difficult to clean. This type of glass is intentionally designed to be difficult to see through in order to provide privacy or to diffuse light.

Expansion bolts are anchoring devices that have an expandable socket. As the bolt is tightened into the socket, it swells, creating a secure attachment. These bolts are commonly used in masonry walls for attaching timbers. Expansion shields are similar but are not specifically designed for masonry walls. Toggle bolts and machine bolts are different types of fasteners that do not have an expandable socket.

The correct answer states that the coarse aggregates should be no larger than ¾ the minimum clear spacing between individual reinforcing bars or wires, bundles of bars, or prestressing tendons or ducts. This means that the size of the coarse aggregates should be smaller than three-fourths of the spacing between the reinforcements. This is important for proper bonding between the concrete and the reinforcements, as larger aggregates can create voids or honeycomb in the concrete, which can weaken the bond. Therefore, the correct answer ensures that the aggregates are of an appropriate size to ensure proper bonding and prevent any issues with the concrete structure.

The correct answer is cellulose fiber tile because it is made from compressed sugar cane or wood fibers, which matches the description given in the question. The perforations on the surface of the tile also align with the characteristics of cellulose fiber tiles. Ceiling board, mineral wool tile, and parquet tile do not match the given description and therefore, are not the correct answers.

Wrought iron is a commercially pure iron that is known for its fibrous nature, corrosion resistance, and ductility. It is valued for its ability to be easily shaped and welded, making it a popular choice for decorative ironwork, such as gates and railings. Wrought iron is different from pig iron, which is high in carbon content and brittle, and cast iron, which is brittle and prone to corrosion. Crude iron refers to iron in its raw, unprocessed form, which is not specifically known for its corrosion resistance or ductility.

Fusion welding is a type of welding process where heat and added metal are used to create the weld. In fusion welding, the base metals are melted and fused together to form a strong joint. This process typically involves the use of heat sources such as an electric arc or a gas flame to generate the necessary heat for melting the metals. Fusion welding is commonly used in various industries for joining metal components and structures.

The given statement describes the use of layers of waterproofing materials, such as tar paper, coal-tar pitch, asbestos, and asphalted felt, which are laid in asphalt. This method of waterproofing involves the use of a membrane, which acts as a barrier to prevent water from penetrating through. Therefore, the correct answer is "a. Membrane waterproofing."

The correct answer is a. 10 mm diameter (3/8”) vertical bars at 600 mm on centers and 3/8” Ǿ horizontal bars every third course. This is the required reinforcement for a 4" hollow block. The vertical bars provide strength and stability to the block, while the horizontal bars every third course help distribute the load evenly. The specified diameter and spacing of the bars ensure that the block can withstand the required loads and maintain its structural integrity.

Aerocrete is a type of Portland cement concrete that has chemical foam added to it during the deposition process. This foam generates gases, resulting in a lightweight pre-cast or shop-made unit. Aerocrete can be produced in both hollow and solid forms.

The standard size overlap for corrugated G.I. roofing is 2 ½”. This means that each sheet of roofing should overlap the adjacent sheet by 2 ½ inches. This overlap helps to ensure a tight and secure fit, preventing any water or debris from entering between the sheets. It also helps to provide stability and strength to the roof, making it more resistant to wind and other weather conditions.

The correct answer is a. scratch coat. A scratch coat is a pretreatment of poured concrete where a thin layer of lean cement grout mixed with flexible base additives is applied to the surface. This layer is then splattered onto the surface using a tampico brush or masonry spoon. The purpose of the scratch coat is to create a rough texture or "tooth" on the surface, which allows for excellent adhesion of the plaster that will be applied later.

The given description mentions that the paint is water-based, acrylic, and has good opacity and durability. It is also mentioned that the paint is non-toxic, non-flammable, and contains a fungicide additive to prevent mold and mildew growth. The most suitable option based on these characteristics is "b. Boysen Permacoat Flat Latex."

The given description describes a machine bolt, which is a threaded bolt with a straight shank and a conventional head. Expansion bolts are different as they have a mechanism to expand and anchor into the material. Expansion shields are also different as they are used to provide support for screws or bolts in hollow walls. Toggle bolts are another type of anchor that uses a spring-loaded toggle to provide support. Therefore, the correct answer is d. Machine bolt.

The correct answer is b. back flap hinge. This type of hinge is designed to support and hold up table leaves or flaps when they are extended. The wide plates provide stability and strength, while the rabbeted full flaps ensure a secure and flush fit when the leaves are folded down. The back flap hinge is commonly used in furniture construction to allow for the expansion of table surfaces when needed.

The correct answer is c. rodapis. This term refers to the baseboard in Filipino.

Checking is a common paint film defect where progressive powdering from the surface inward occurs. This defect is characterized by the appearance of small cracks or lines on the surface of the paint film. These cracks can occur due to various factors such as improper surface preparation, inadequate drying time between coats, or incompatible paint layers. Checking can affect the overall appearance and durability of the paint job and may require sanding and repainting to fix.

A steel element such as a wire, cable, bar, rod, or strand, or a bundle of such elements, is used to impart prestress to concrete. This element is commonly referred to as a tendon.

Bansalagin is the correct answer because it is a timber that is widely used for various construction purposes, such as wharf and bridge construction, ships, posts, foundation sills, railroad tiles, etc. Bansalagin is known for its strength and durability, making it suitable for these types of projects.

In the illustration at BM 1.1, figure D is the self-drilling fastener because it has a pointed end, indicating that it can drill its own hole as it is being fastened. Figures A, B, and C do not have a pointed end and therefore cannot be self-drilling fasteners.

In the given illustration, Figure G represents a bolt with a hex head. The hex head has six sides, which is characteristic of a hex head bolt. Therefore, the correct answer is b. Figure G.

Sand blasting is a common and cheap masonry finish where dry consistency mortar mix is sprayed by mechanical or pneumatic means. The sprayed cement is left to dry and give a rustic finish. Optional paint coat may be required. This technique involves using high-pressure sand to remove the top layer of the surface, resulting in a textured finish. It is an effective method for cleaning and preparing surfaces for painting or coating.

The given description of the phenomenon matches the process of washing. Washing is characterized by streaking on the surface, fading color, the final exposure of the original surface, and the accumulation of pigment particles below the painted area. This suggests that the paint has been gradually removed or eroded by some form of washing action, resulting in these specific visual effects. Therefore, the correct answer is d. washing.

Pentachlorophenol is a type of oil-type wood preservative that provides high protection against decay fungi and termites. It can be painted over and does not have an unpleasant odor. Additionally, it is less easily ignited compared to coal-tar creosotes. Therefore, pentachlorophenol is the correct answer.

Lacquer is the correct answer because it is made synthetically and is closely related to rayon or nylon fabrics. It also requires a special thinner sold by each manufacturer for their own brand. Varnish, shellac, and wood fillers are not made synthetically and do not have a close relation to rayon or nylon fabrics. Therefore, they are not the correct answer.

Figure d is the correct answer because it shows a pattern of brickwork known as flemish (double stretcher) brickwork. This type of brickwork involves alternating rows of bricks with their long sides visible (stretchers) and their short sides visible (headers). This creates a distinctive pattern with a repeating sequence of two stretchers followed by one header. Figures a, b, and c do not show this specific pattern.

Fire bricks are bricks that are specifically designed to withstand high temperatures and are used in applications such as fireplaces, kilns, and furnaces. They are made from a mixture of flint clay and plastic clay, which gives them their ability to resist heat. Glazed bricks are coated with a layer of glaze, facing bricks are used for the outer face of a wall, and common bricks are regular bricks used for general construction purposes. Therefore, the correct answer is b. fire brick.

When the soil beneath a building is not well drained, it is necessary to prevent dampness from seeping into the concrete slab. Bituminous felt is the best material to use in this situation. Bituminous felt is a waterproofing material that is commonly used to protect buildings from moisture. It is made from a combination of bitumen and a fibrous material, such as fiberglass or polyester. This material is highly resistant to water and provides an effective barrier against dampness, making it the ideal choice for installation beneath a concrete slab in poorly drained soil.

The correct answer is d. Electrolytic finishes. Electrolytic finishes involve using an electrolyte solution and an electric current to create a chemical reaction on the surface of aluminum, which produces a protective coating of oxide. This process helps to improve the appearance, durability, and corrosion resistance of the aluminum. Electroplating, chemical finishes, and mechanical finishes do not specifically rely on the ability of aluminum to develop a protective oxide coating.

Non-corrosive fluxes, such as rosin, leave behind non-conductive residues that do not need to be removed. This means that these fluxes do not cause corrosion or damage to the materials being soldered. The fact that rosin is specifically mentioned as the principal flux of this type further supports the answer choice of non-corrosive fluxes.

Figured wired glass is a type of opaque glass that is commonly used to construct doors with glass panels. It is designed to allow natural light to pass through while maintaining privacy. The glass has a patterned or textured surface with embedded wire mesh, making it resistant to shattering or breaking. This makes it a suitable choice for areas where safety is a concern, such as commercial buildings or public spaces. Smoked glass, etched glass, and bevel glass do not provide the same level of opacity or safety features as figured wired glass.

Toggle bolts are used to fasten materials to plaster, gypsum board, and other thin wall materials. They have two hinged wings that close against a spring when passing through a predrilled hole and open as they emerge to engage the inner surface. This allows for a secure and strong connection to the wall. Expansion bolts and expansion shields are typically used for different applications, such as anchoring heavy loads to concrete or masonry. Machine bolts, on the other hand, are threaded fasteners that are typically used with nuts to secure two or more parts together. Therefore, the correct answer is c. Toggle bolts.

not-available-via-ai

A granolithic finish consists of a topping made of a mixture of cement, sand, and crushed stone. This mixture is applied to a surface and then troweled to create a smooth and durable finish. The use of crushed stone in the mixture adds strength and durability to the finish. This type of finish is commonly used in high-traffic areas such as sidewalks, driveways, and industrial floors due to its resistance to wear and tear.

Melamine and urea are similar plastics that are hard, durable, and dimensionally stable. They also have resistance to chemicals, electric potential, and heat. This makes them suitable for applications where these properties are required, such as in electrical insulation, kitchenware, and laminates. Alkyds, phenolics, and urethanes may have some of these properties, but they are not specifically mentioned as being resistant to all three - chemicals, electric potential, and heat. Therefore, the correct answer is b. melamine and urea.

The given description matches the characteristics of standard hardboard. Standard hardboard is a type of hardboard that is light brown in color and has a smooth surface on one side and a screened impression on the other. It is commonly used for various applications such as furniture backing, wall paneling, and decorative purposes. Tempered hardboard is usually darker in color and has increased durability due to a special manufacturing process. Chip hardboard is made from wood chips and is typically used for construction purposes. Panel hardboard is a general term that can refer to different types of hardboard panels.

A joint formed by overlapping the edges of a metal sheet or plated and joining them by riveting, soldering, or brazing is known as a lap seam. In this type of joint, one piece of metal overlaps another, and the two pieces are joined together using various methods. This type of joint is commonly used in metalworking and provides a strong and secure connection between the two pieces of metal.

The fillister head type of bolt is typically characterized by a slightly rounded top surface and a cylindrical shape with a slightly tapered base. In the given illustration, Figure E best represents this description, as it has a rounded top surface and a cylindrical shape with a tapered base.

The correct answer is b. fiber-saturation point. This is the point at which all free water has been removed from a material, but the absorbed water still remains. At this point, the material is saturated with water, specifically in the fibers. This is an important concept in the study of wood and other porous materials, as it affects their strength, dimensional stability, and other properties.

The correct answer is "quoins". Quoins are corner stones at the angle of a building that are usually rusticated to project from the normal surface of the wall.

Pumice is composed of stable silicates and is inert, making it durable for use as a lightweight aggregate or for insulation. This explanation aligns with the given statement, which describes the properties of the material.

In the illustration given at BM 1.1, figure B represents the sheet metal blunt point.

Flush bolts are used on the inactive leaf of a pair of doors to lock the door in place. They are installed into the edge of the door and slide into a strike plate or floor socket when engaged. This helps to secure the door and prevent it from being opened or moved.

A ball tipped hinge is the correct answer because it allows the door to swing completely clear of the frame, either with the whole hinge or with the hinge knuckle protruding. This type of hinge is commonly used in situations where it is necessary to have maximum clearance between the door and the frame, such as in tight spaces or when the door needs to open at a wide angle. The ball tip on the hinge helps to reduce friction and allows for smooth movement of the door.

In the given illustration, figure A is the Sheet metal gimlet point. The shape of figure A resembles a pointed cone, which is characteristic of a gimlet point. Figures B, C, and D do not have the same pointed shape as figure A, so they cannot be the Sheet metal gimlet point.

Ammoniacal Copper Arsenate (ACA) is dissolved in water for pressure treating wood. This process helps to produce a clean and odorless product. After pressure treating, ACA is bonded with plywood through a chemical process called fixation. This suggests that ACA is the correct answer.