1.
Aggregates should conform to PNS or ASTM standards and must be well-graded, easy workability and method of consolidated are such that the concrete can be poured without honeycomb or voids. What is the nominal maximum size of a coarse aggregate when working spaces between reinforcements for proper bonding?
Correct Answer
D. D. Course aggregates shall be no larger than ¾ the minimum clear spacing between individual reinforcing bars or wires, bundles of bars, or prestressing tendons or ducts
Explanation
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.
2.
The vernacular term for rough plastering:
Correct Answer
C. C. rebokada
Explanation
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.
3.
A common paint film defect where progressive powdering from the surface inward occurs. It is called:
Correct Answer
C. C. checking
Explanation
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.
4.
Has one or both sides acid-etched or sand blasted. Either process weakens the glass and makes it difficult to clean. (CDEP VII- 70)
Correct Answer
B. B. Obscured glass
Explanation
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.
5.
It is a timber that most widely used for wharf and bridge construction, ships, posts, foundation sills, railroad tiles and other construction where strength and durability is required. (CDEP VII- 53)
Correct Answer
A. A. Bansalagin
Explanation
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.
6.
These aluminum finishes are based on the specific ability of aluminum to develop a protective coating of oxide on its surface. (CDEP VII- 33)
Correct Answer
D. D. Electrolytic finishes
Explanation
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.
7.
What is the required reinforcement of a 4” hallow block. (CDEP VII- 29)
Correct Answer
A. A. 10 mm diameter (3/8”) vertical bars at 600 mm on centers and 3/8” Ǿ horizontal bars every third course.
Explanation
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.
8.
Standard concrete mix for beams, girders, slabs, stairs and columns is (CDEP VII- 14)
Correct Answer
B. B. Class “A”
Explanation
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.
9.
Composed of stable silicates, and is inert and thus durable for use as a lightweight aggregate or for insulation. (CDEP VII- 45)
Correct Answer
C. C. Pumice
Explanation
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.
10.
A Portland cement concrete to which chemical foam is added to generate gases in the process of deposition, resulting in lightweight pre-cast or shop-made unit in both hallow and solid forms. (CDEP VII- 45)
Correct Answer
A. A. Aerocrete
Explanation
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.
11.
It is a type of oil-type wood preservatives that has high protection against decay fungi and termites; can be painted; has no unpleasant odor; is less easily ignite than coal-tar creosotes. (CDEP VII- 49)
Correct Answer
B. B. pentachloropHenol
Explanation
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.
12.
It’s a favorite wood for flooring and window sills; furniture’s and cabinet work; used for bridges and wharves and other permanent structure.
Correct Answer
C. C. kalamansanai
13.
A commercially pure iron of fibrous nature, valued for its corrosion resistance and ductility is a: (CDEP VII- 34)
Correct Answer
C. C. wrought iron
Explanation
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.
14.
These are made from compressed sugar cane or wood fibers with perforations on the surface of the tile: (CDEP VII- 91)
Correct Answer
A. A. cellulose fiber tile
Explanation
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.
15.
It is characterized by streaking on the surface, fading color, the final exposure of the original surface and accumulation of pigment particles below the painted area. (CDEP VII- 95)
Correct Answer
D. D. washing
Explanation
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.
16.
Is characterized by swelling of the entire film which is usually followed by a break in the film and subsequent peeling. (CDEP VII- 96)
Correct Answer
A. A. blistering
Explanation
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.
17.
Is made synthetically, and is closely related to rayon or nylon fabrics. It requires a special thinner sold by each manufacturer for his own brand. (CDEP VII- 93)
Correct Answer
D. D. lacquer
Explanation
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.
18.
It is consist of a topping with a mixture of 1 part cement, 1 part sand and 1 part finely crushed stone. (CDEP VII- 87)
Correct Answer
B. B. granolithic finish
Explanation
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.
19.
Identify which figure is flemish (double stretcher) brickwork
Correct Answer
D. D
Explanation
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.
20.
A 100% acrylic water-based latex paint with very good opacity and durability. It’s a non-toxic, non-flammable paint with non-mercurial fungicide additive to prevent mold and mildew growth. (Boysen Product Manual)
Correct Answer
B. B. Boysen Permacoat Flat Latex
Explanation
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."
21.
Wood coming out from trees with needle leaves, rather than broad leaves are called:
Correct Answer
C. C. soft wood
Explanation
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.
22.
Layers of waterproofing materials used in this method range from ordinary tar paper lay with coal-tar pitch to asbestos or asphalted felt laid in asphalt.
Correct Answer
A. A. Membrane waterproofing
Explanation
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."
23.
These are bricks ordinarily made from mixture of flint clay and plastic clay. (CDEP VII- 28)
Correct Answer
B. B. fire brick
Explanation
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.
24.
These are corner stones at the angle of the building, usually rusticated so as to project from the normal surface of the wall.
Correct Answer
A. A. soldier
Explanation
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.
25.
Hard, durable, and dimensionally stable, these similar plastics are resistant to chemicals, electric potential, and heat. (CDEP VII- 64)
Correct Answer
B. B. melamine and urea
Explanation
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.
26.
It is a type of hard board light brown in color and has a fairly hard, smooth surface on one side and a screened impression on the other. (CDEP VII- 58)
Correct Answer
C. C. Standard Hard board
Explanation
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.
27.
___________________ is dissolved in water for pressure treating, producing a product that is clean and odorless. It is bond with plywood after pressure treating I a chemical process known as fixation. (CDEP VII- 50)
Correct Answer
D. D. Ammoniacal Copper Arsenate
Explanation
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.
28.
When all free water is removed but all absorbed water remains is called__________. (CDEP VII- 47)
Correct Answer
B. B. fiber-saturation point
Explanation
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.
29.
________________ in which the heat and added metal make the weld. (CDEP VII- 41)
Correct Answer
A. A. fusion welding
Explanation
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.
30.
It leaves residue which are non-conductive and therefore need not to remove. Rosin is the principal flux of this type. (CDEP VII- 40)
Correct Answer
B. B. Non-corrosive fluxes
Explanation
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.
31.
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 immerge to engage the inner surface. (CDEP VII- 76)
Correct Answer
C. C. Toggle bolts
Explanation
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.
32.
A threaded bolt having a straight shank and a conventional head such as a square, hexagonal, button, or countersunk type. (CDEP VII- 76)
Correct Answer
D. D. Machine bolt
Explanation
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.
33.
An anchoring device having an expandable socket that swells as a bolt is tightened into it; used in masonry walls for attaching timbers. (CDEP VII- 76)
Correct Answer
A. A. Expansion bolts
Explanation
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.
34.
The hardware on a door to accommodate the knob and lockset keyhole
Correct Answer
A. A. escutcheon
Explanation
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.
35.
A pretreatment of poured concrete such as walls beams and columns where a thin layer of lean cement grout mixed with flexible base additives is splattered by tampico brush or masonry spoon to the surface to give a “tooth” for excellent plaster adhesion
Correct Answer
A. A. scratch coat
Explanation
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.
36.
A common and cheap masonry finish wherein 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 maybe required
Correct Answer
D. D. sand blast
Explanation
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.
37.
It is butt hinge where it is necessary to throe doors clear of carcass frame with the whole or with the hinge knuckle protruding
Correct Answer
D. D. ball tipped hinge
Explanation
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.
38.
It has wide plates for table leaves and rabbeted full flaps.
Correct Answer
B. B. back flap hinge
Explanation
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.
39.
__________________ are used on the inactive leaf of a pair of doors to lock the door in place.a. foot bolt
Correct Answer
B. B. flush bolt
Explanation
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.
40.
A type of shutter proof opaque glass used to construct a door with glass to allow natural light only
Correct Answer
C. C. figured wired glass
Explanation
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.
41.
What is a steel element such as wire, cable, bar, rod or strand, or a bundle of such elements, used to impart prestress to concrete?
Correct Answer
D. D. tendon
Explanation
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.
42.
A joint formed by overlapping the edges of metal sheet or plated and joining them by riveting, soldering or brazing is a
Correct Answer
A. A. lap seam
Explanation
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.
43.
The Filipino term for baseboard is
Correct Answer
C. C. rodapis
Explanation
The correct answer is c. rodapis. This term refers to the baseboard in Filipino.
44.
When the soil beneath the building is not exceptionally well drained and it is necessary to exclude dampness, the best material to be used which is installed beneath the concrete slab is
Correct Answer
B. B. bituminous felt
Explanation
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.
45.
Standard size overlap for corrugated G.I. roofing is
Correct Answer
B. B. 2 ½”
Explanation
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.
46.
In the illustration given at BM 1.1, which of the following is the Sheet metal blunt point?
Correct Answer
B. B. figure B
Explanation
In the illustration given at BM 1.1, figure B represents the sheet metal blunt point.
47.
In the illustration given at BM 1.1, which of the following is the Sheet metal gimlet point?
Correct Answer
A. A. figure A
Explanation
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.
48.
In the illustration given at BM 1.1, which of the following is the self drilling fastener?
Correct Answer
D. D. figure D
Explanation
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.
49.
In the illustration given at BM 1.2, which of the following is the fillister head type of bolt?
Correct Answer
C. C. Figure E
Explanation
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.
50.
In the illustration given at BM 1.2, which of the following is the hex head type of bolt?
Correct Answer
B. B. Figure G
Explanation
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.