CM 113 Final
29. In a building whose structural system consists of columns, beams, and floor and roof slabs, the columns are spaced at 40 ft on center in one direction and 25 ft on center in the other direction. What is the tributary area for an interior column? a. 1,000 ft2 b. 1,000 ft c. 500 ft2 d. 250 ft2 e. None of the above
a. 1,000 ft2
23. Which of the following nailed connections is the strongest? a. Face nailing b. Toe nailing c. End nailing
a. Face nailing
1. A raft foundation is a shallow foundation system. a. True b. False
a. True
1. Cold-formed steel (CFS) is used in load-bearing walls, non-loadbearing walls, floors, and roofs. a. True b. False
a. True
10. A 20-gauge sheet steel is thicker than 22-gauge sheet steel. a. True b. False
a. True
11. CFS studs are C-shaped. a. True b. False
a. True
16. Both a Z-shape CFS section and a hat section are referred to as furring CFS sections. a. True b. False
a. True
21. The primary purpose of longitudinal steel bars in a reinforced concrete beam is to overcome the weakness of concrete in tension. a. True b. False
a. True
22. A PT concrete slab-on-ground foundation does not require control joints. a. True b. False
a. True
24. From the user's view point, the difference between MC 15 and KD 15 is generally ignored. a. True b. False
a. True
27. Everything else being the same, a building constructed of heavyweight materials is subjected to a greater earthquake load than a building constructed of lightweight materials. a. True b. False
a. True
27. Gaseous emissions produced by engineered wood products decrease over time. a. True b. False
a. True
23. The moisture content in a piece of lumber has been measured to be 15%. According to the wood industry, this piece of lumber will be classified as a. dry. b. green. c. wet. d. moist. e. Arid.
a. dry.
18. Structural lumber is typically a. flat-sawn. b. quarter-sawn. c. either (a) or (b), depending on the type of structural member.
a. flat-sawn.
26. In a steel column that rests on a concrete footing, the area of the bearing plate used is generally a. greater than the cross-sectional area of the column. b. equal to the cross-sectional area of the column. c. smaller than the cross-sectional area of the column.
a. greater than the cross-sectional area of the column.
18. A reinforced concrete slab-on-ground foundation is suitable for a. lightly loaded low-rise buildings on stable soils. b. lightly loaded low-rise buildings on expansive soils. c. lightly loaded low-rise buildings on both stable and expansive soils. d. all types of buildings on stable soils, provided that it is at least 12in. thick. e. all types of buildings on stable soils, provided that it comprises perimeter and intermediate beams in both directions.
a. lightly loaded low-rise buildings on stable soils.
27. The primary purpose of ties in a reinforced concrete column is to a. prevent the buckling of vertical reinforcement in the column. b. prevent the crushing of concrete. c. increase the shear resistance of the column. d. none of the above.
a. prevent the buckling of vertical reinforcement in the column.
15. The use of bridging channels requires a. punched studs. b. unpunched studs. c. punched tracks. d. unpunched tracks. e. none of the above.
a. punched studs.
22. Nails work best when they are subjected to a. shear. b. Tension.
a. shear.
25. Joist hangers are steel connectors a. that connect floor joists with a supporting beam. b. that connect floor joists with the supporting wall. c. that connect floor joists with floor sheathing. d. all of the above.
a. that connect floor joists with a supporting beam.
26. A foundation system consisting of perimeter grade beams and a reinforced concrete slab thickened over drilled piers is suitable a. where the soil is expansive. b. where the soil-bearing capacity is high. c. where the water table is high. d. for low-rise buildings in cold climates. c. for buildings with unconditioned interiors.
a. where the soil is expansive.
20. Which of the following terms means the same as quarter-sawn? a. Tangentially sawn b. Radially sawn
b. Radially sawn
22. Fungal decay in wood occurs when the moisture content in wood is a. greater than or equal to 15%. b. greater than or equal to 20%. c. greater than or equal to 25%. d. between 15% and 25%. e. none of the above.
b. greater than or equal to 20%.
29. The allowable stress in a material is generally a. equal to its ultimate stress. b. less than its ultimate stress. c. greater than its ultimate stress. d. none of the above.
b. less than its ultimate stress.
1. The most common use of glulam members is in a. structural panels. b. long-span beams. c. short-span beams. d. none of the above.
b. long-span beams.
23. A PT concrete slab-on-grade foundation is commonly used a. on stable soils. b. on expansive soils. c. on soils with a high water table. d. all of the above.
b. on expansive soils.
24. A foundation system consisting of grade beams bearing on drilled piers and an elevated ground floor with an underlying crawl space is a. suitable for lightly loaded low-rise buildings on stable or high bearing-capacity soils. b. suitable for lightly loaded low-rise buildings on expansive or low-bearing-capacity soils. c. suitable for all types of buildings on expansive or low-bearing capacity soils. d. suitable for all types of buildings on stable or high-bearing capacity soils. e. suitable for all types of buildings on all types of soils.
b. suitable for lightly loaded low-rise buildings on expansive or low-bearing-capacity soils.
3. A strip footing is generally used under a a. column. b. wall. c. drilled pier. d. pile. e. all of the above.
b. wall.
23. A material that is weak in tension is a. strong in bending. b. weak in bending. c. no relationship between the tensile and bending strengths of a Material.
b. weak in bending.
22. A material that is weak in tension is a. strong in shear. b. weak in shear. c. no relationship between the shear and tensile strengths of a Material.
b. weak in shear.
31. The total approximate dead load of a floor in a typical wood frame residential building is a. 50 psf. b. 30 psf. c. 10 psf. d. 5 psf. e. none of the above.
c. 10 psf.
32. The total approximate gravity load on a floor in a typical wood frame residential building is a. 50 psf. b. 30 psf. c. 10 psf. d. 5 psf. e. none of the above.
c. 10 psf.
21. The weight of a piece of lumber is 2 lb. The weight of the same piece after it is fully dried is 1.8 lb. What was the original moisture content in the wood? a. 7% b. 9% c. 11% d. 15% e. None of the above
c. 11%
32. A retailer of building materials purchased 1,000 pieces of 2 * 12 lumber, each 10 ft long. How many board feet did the retailer purchase? a. 1,000 bd ft b. 10 MBF c. 20,000 bd ftd. d.100,000 bd ft e. None of the above
c. 20,000 bd ftd.
12. Punchouts in CFS studs are generally spaced a. 48 in. on center. b. 36 in. o.c. c. 24 in. on center. d. 12 in. on center. e. none of the above.
c. 24 in. on center.
28. A reinforced concrete beam measures 12 in. * 24 in. in cross section. If the density of reinforced concrete is 150 lb/ft3, the weight of the beam is a. 450 lb/ft. b. 350 lb/ft. c. 300 lb/ft. d. 300 lb. e. 300 lb/ft3.
c. 300 lb/ft.
6. Which of the following foundation items must be integrated under a concrete cap? a. Isolated column footings b. Wall footings c. Driven piles d. Drilled piers e. All of the above
c. Driven piles
12. The augers used for boring pier holes generally use a. a hammering operation. b. a vibratory operation followed by a hammering operation. c. a rotary operation with a helix-type blade cutter. d. a rotary operation followed by a hammering operation. e. none of the above.
c. a rotary operation with a helix-type blade cutter.
11. In expansive soils, drilled piers are subjected to a. a downward force in the expansive region of the soil, which generally occurs well below the ground surface. b. an uplift force in the expansive region of the soil, which generally occurs well below the ground surface. c. an uplift force in the expansive region of the soil, which generally occurs in the upper soil layer. d. any one of the above, depending on the local geology. e. none of the above.
c. an uplift force in the expansive region of the soil, which generally occurs in the upper soil layer.
25. The bearing strength of a material is closely related to its a. bending strength. b. tensile strength. c. compressive strength. d. modulus of elasticity. e. none of the above.
c. compressive strength.
8. Compared to sawn lumber joists, wood I-joists are a. less expensive. b. slightly heavier. c. dimensionally more stable. d. all of the above.
c. dimensionally more stable.
26. The adhesives used in making engineered wood products contain a. urethane. b. styrene. c. formaldehyde. d. lignin. e. none of the above.
c. formaldehyde.
19. A ribbed reinforced concrete slab-on-ground foundation is preferred over a constant-thickness slab foundation because a. its formwork is simpler. b. it can be constructed more quickly. c. it provides the same strength and stiffness at a lower cost. d. it does not require control joints. e. all of the above.
c. it provides the same strength and stiffness at a lower cost.
26. The term S2S implies that the lumber has been a. sawed twice. b. sawed from two sides. c. surfaced on two sides. d. none of the above.
c. surfaced on two sides.
5. Balanced glulam beams are mandated for a. continuous beams. b. single-span beams. c. beams with an overhang. d. (a) and (c). e. (b) and (c).
d. (a) and (c).
30. In a building whose structural system consists of columns, beams, and floor and roof slabs, the columns are spaced at 40 ft on center in one direction and 25 ft on center in the other direction. What is the tributary area for a corner column? a. 1,000 ft2 b. 1,000 ft c. 500 ft2 d. 250 ft2 e. None of the above
d. 250 ft2
29. The actual dimensions of 4 * 8 lumber are a. 312in. * 712in. b. 314in. * 712in. c. 314in. * 714in. d. 312in. * 714in. e. none of the above.
d. 312in. * 714in.
9. The yield strength of CFS members used in load-bearing applications is generally a. 20 ksi. b. 30 ksi. c. 40 ksi. d. 50 ksi. e. none of the above.
d. 50 ksi.
21. The nails most commonly used in wood frame construction are a. 4d, 6d, 9d, and 12d. b. 6d, 12d, 18d, and 24d. c. 6d, 10d, 16d, and 20d. d. 6d, 8d, 10d, and 16d. e. 6d, 8d, 10d, and 12d.
d. 6d, 8d, 10d, and 16d.
2. Which of the following foundation systems does not extend, generally uninterrupted, for the entire footprint of the building? a. Slab-on-grade foundation b. Mat foundation c. Raft foundation d. Pier or pile foundation
d. Pier or pile foundation
15. The aggregate for concrete is generally subdivided into coarse aggregate and fine aggregate. The distinction between the two types of aggregate is based on the a. aggregate's strength. b. aggregate's surface texture. c. aggregate's density. d. aggregate's particle size. e. aggregate's parent rock.
d. aggregate's particle size.
27. In a building with a foundation system consisting of grade beams bearing on drilled piers and an elevated ground floor with an underlying crawl space, the ground floor is generally constructed of a. wood frame. b. steel frame. c. precast concrete. d. any one of the above. e. none of the above.
d. any one of the above.
27. A 10-ft-long stud was installed in position when the wood's moisture content was 19%. During a long dry spell, the wood's moisture content became 8%. The new stud length will be a. approximately 9 ft 10 in. b. approximately 9 ft 1012in. c. approximately 9 ft 11 in. d. approximately the same as the initial stud length of 10 ft. e. none of the above.
d. approximately the same as the initial stud length of 10 ft.
28. The horizontal blocking in wood studs helps prevent a. compressive failure of studs. b. shear failure of studs. c. tensile failure of studs. d. buckling of studs.
d. buckling of studs.
24. The stirrups in a reinforced concrete beam are used to a. increase the strength of the beam in bending. b. reduce the deflection of the beam. c. increase the durability of the beam. d. increase the strength of the beam in shear. e. none of the above.
d. increase the strength of the beam in shear.
5. The use of CFS, as an alternative to lumber, in load-bearing residential applications, has found favor in some warm, humid areas of United States because CFS is a. noncombustible. b. heavier, and hence stronger. c. lower in labor and installation cost. d. more durable against termite and fungal attack. e. all of the above.
d. more durable against termite and fungal attack.
5. A deep foundation system consists of a a. slab-on-ground foundation. b. mat foundation. c. raft foundation. d. pier or pile foundation. e. all of the above.
d. pier or pile foundation.
4. A strap footing is generally used where a. the soil is expansive. b. the soil has low bearing capacity. c. the columns in the buildings are closely spaced. d. the columns in the building abut the property line. e. none of the above.
d. the columns in the building abut the property line
14. In the identification mark on a CFS member "362S125-30 (33) G40", the number 30 implies that a. it is a 30-ft-long member. b. it is a 30-in.-long member. c. the thickness of steel used for the member is gauge 30. d. the thickness of steel sheet used for the member is 0.030 in. e. none of the above.
d. the thickness of steel sheet used for the member is 0.030 in.
24. The region of the United States that is relatively more earthquake prone is the a. northern United States. b. southern United States. c. eastern United States. d. western United States. e. none of the above.
d. western United States.
2. The use of CFS members in interior partitions is generally in buildings of a. Type I construction. b. Type II construction. c. Type III construction. d. Types II and III construction. e. Types I and II construction.
e. Types I and II construction.
28. Waterproofing that is applied to the outside of basement walls is called a. positive-side waterproofing. b. negative-side waterproofing. c. blind-side waterproofing. d. either positive-side or negative-side waterproofing. e. either positive-side or blind-side waterproofing.
e. either positive-side or blind-side waterproofing.
20. A foundation system consisting of perimeter foundation walls and an elevated ground floor with an underlying crawl space is commonly used a. where the soil is expansive. b. where the soil-bearing capacity is low. c. where the water table is high. d. for low-rise buildings in warm climates. e. for low-rise buildings in cold climates.
e. for low-rise buildings in cold climates.
13. A tremmie is used during the drilling of a pier to a. prevent the caving in of the soil. b. bring the cut soil out of the hole. c. bring up the groundwater that collects at the bottom of the pier. d. seal the pier hole against percolation of water. e. none of the above.
e. none of the above.
13. In the identification mark on a CFS member "362S125-30 (33) G40", the letter S implies that a. it is an S-shaped member. b. it is a straight, unbent member. c. it can only be used for a single-story building. d. it is made from steel with a strength of 362 ksi. e. none of the above.
e. none of the above.
25. Void boxes used for concrete formwork in foundation systems are made of a. wood. b. steel. c. fiberglass. d. plastic. e. none of the above.
e. none of the above.
30. The actual dimensions of 2 * 12 lumber are a. 112in. * 11 in. b. 112in. * 1112in. c. 112in. * 1134in. d. 134in. * 1134in. e. none of the above.
e. none of the above.
25. The term S-DRY implies that the lumber has been a. stored in a dry climate. b. sawed when its moisture content was ...25,. c. surfaced when its moisture content was ...25,. d. sawed when its moisture content was ...19,. e. surfaced when its moisture content was ...19,.
e. surfaced when its moisture content was ...19,.
6. The amount of corrosion protection required in CFS members is generally a. CP30. b. CP40. c. CP50. d. CP60. e. varies with the application.
e. varies with the application.
29. In a basement excavation with walls supported by an excavation retention structure, waterproofing is applied to the excavation retention structure. a. True b. False
a. True
4. The gravity load supported by CFS members, used in the framing of the backup wall for exterior cladding, is small. a. True b. False
a. True
7. The terms G40 and CP40 refer to the same property of CFS members. a. True b. False
a. True
9. Pile foundations are commonly used in coastal areas. a. True b. False
a. True
21. A posttensioned (PT) concrete slab-on-ground foundation generally consists of a. a PT slab, perimeter beams, and intermediate beams. b. a PT slab and perimeter beams. c. a PT slab only. d. any one of the above, depending on the superimposed loads. e. none of the above.
a. a PT slab, perimeter beams, and intermediate beams.
28. A piece of lumber has been specified as 2 in. * 4 in. in cross section. This refers to its a. actual cross-sectional dimensions. b. nominal cross-sectional dimensions.
a. actual cross-sectional dimensions.
7. Drilled piers used as foundation elements consist of a. cast-in-place reinforced concrete. b. cast-in-place unreinforced concrete. c. precast concrete. d. structural steel. e. Wood.
a. cast-in-place reinforced concrete.
20. Several different types of nails are used in wood frame construction. They are typically distinguished from each other by the a. nail head and nail shank. b. nail head and nail tip. c. nail tip and nail shank. d. nail head and type of threads. e. none of the above.
a. nail head and nail shank.
2. Unprotected glulam members with a large cross section are considered to provide a fire resistance rating of up to a. 12h. b. 1 h. c. 2 h. d. 3 h. e. 4 h.
b. 1 h.
11. Wood trusses are generally spaced at a. 12 in. on center. b. 24 in. on center. c. 48 in. on center. d. 60 in. on center.
b. 24 in. on center.
10. Drilled piers transfer building loads mainly by end bearing, while piles do so by both end bearing and skin friction. a. True b. False
b. False
10. Nail plates, used to join members of a truss, are generally used only on one face of the truss. a. True b. False
b. False
14. Where a tremmie is used in a pier, casing is unnecessary. a. True b. False
b. False
15. In a deep foundation system, foundation settlement is generally larger than in a shallow foundation system. a. True b. False
b. False
19. Flat-sawn lumber is dimensionally more stable than quarter-sawn lumber. a. True b. False
b. False
24. Nail popping is primarily a problem in floor sheathing and is caused by the shrinkage of floor sheathing. a. True b. False
b. False
30. In most materials, the safety margin for compressive stress and bending stress is the same. a. True b. False
b. False
31. In calculating the board foot measure, we must use the actual dimensions of lumber, not its nominal dimensions. a. True b. False
b. False
4. Unbalanced beams can be used only as single-span beams. a. True b. False
b. False
7. Wood I-joists are made of LVL or solid sawn lumber flanges and webs. a. True b. False
b. False
8. Which of the following foundation system has large voids? a. Concrete slab-on-ground b. Mat foundation c. Raft foundation d. Strip footing e. None of the above
c. Raft foundation
17. A commonly used foundation drainage system consists of a. a perforated drain pipe. b. a perforated drain pipe set within a layer of crushed stone or gravel. c. a perforated drain pipe set within a layer of crushed stone or gravel, the layer wrapped with a filter fabric. d. a perforated drain pipe wrapped with filter fabric and set within a layer of crushed stone or gravel. e. any one of the above.
c. a perforated drain pipe set within a layer of crushed stone or gravel, the layer wrapped with a filter fabric.
23. According to the geologists, the earth's surface is composed of several segments that are called a. earth segments. b. surface plates. c. tectonic plates. d. geological segments. e. segmental plates.
c. tectonic plates.
9. Characteristics of a truss include a. greater spanning capability than a sawn lumber beam having the same amount of material. b. individual members joined together to form an array of interconnected rectangular frames. c. individual members joined together to form an array of interconnected triangular frames. d. (a) and (b). e. (a) and (c).
e. (a) and (c).
3. A glulam member a. must be made using long, continuous lengths of high-grade sawn lumber. b. is generally stronger and stiffer than sawn lumber of the same dimensions. c. requires complete protection from exterior elements due to its water-soluble adhesive. d. none of the above. e. all of the above.
e. all of the above.
6. Laminated veneer lumber (LVL) is a. produced by gluing together wood veneers that are approximately 18in. thick. b. generally used as floor joists and beams. c. glued with all veneers running in the same direction. d. stronger along the grain and weaker across the grain. e. all of the above.
e. all of the above.
26. An earthquake measuring 7.0 on the Richter scale is a. twice as strong as a 6.0 earthquake. b. 10 times stronger than a 6.0 earthquake. c. 100 times stronger than a 6.0 earthquake. d. 500 times stronger than a 6.0 earthquake. e. none of the above.
e. none of the above.
3. CFS members are generally used as framing members in exterior wall cladding in buildings of a. Types I, II, and III construction. b. Types II, III, and IV construction. c. Types III, IV, and V construction. d. Types I, II, III, IV, and V construction. e. none of the above.
e. none of the above.
8. The yield strength of CFS members used for interior partitions is generally a. 20 ksi. b. 30 ksi. c. 40 ksi. d. 50 ksi. e. none of the above.
e. none of the above.
16. Settlement of foundations causes stresses in the structural frame of the building when the settlement is a. caused by live loads. b. caused by dead loads. c. caused by lateral loads. d. large and uniform over the entire foundation area. e. nonuniform over the foundation area.
e. nonuniform over the foundation area.
25. The number of mild (minor to very minor) earthquakes occurring on the earth is almost a. 1 or 2 per year. b. 10 to 20 per year. c. 100 per year. d. 1,000 per year. e. several thousand per year.
e. several thousand per year.