EXAM 2

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University of Southern California *

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211

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Mechanical Engineering

Date

Jan 9, 2024

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docx

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Quizzes: 1. Which of the following is a property of mortar? a. a b and c 2. A wythe is ________. a. a vertical layer of masonry that is one masonry unit thick 3. In contemporary architecture, brick is most often used as part of a layered cavity wall system. a. True 4. What is the name given to the process of removing stone from the ground? a. Quarrying 5. One course of a standard size concrete masonry unit is equal to ___ course of a standard modular size brick a. 3 6. The erection of precast concrete is slower than sitecast concrete construction. a. False 7. Which museum in LA uses precast facade elements? a. Broad museum 8. Which of the following is not an advantage to using precast concrete elements? a. formwork cannot be reused 9. Solid flat, hollow core, doubletree, and single tree are the four major types of ____. a. Precast concrete slab elements 10. What is a primary disadvantage of building with precast concrete structural elements? a. Elements are heavy and bulky to transport and lift into a place 11. How many days does concrete typically require to cure to an acceptable hardness for architectural applications? a. 28 12. What is the primary purpose of steel reinforcement in concrete? a. To increase tensile strength 13. Aggregates make up roughly three-quarters (75%) of the volume of concrete a. True 14. Which primary ingredient of concrete acts as the binder? a. Portland cement 15. What term describes chemical or mineral substances, typically in powder or liquid form, that are incorporated into a concrete mix to improve the performance, workability, or appearance of the concrete? a. Admixtures 16. Most lumber intended for building framing is sawn using a method that divides the log efficiently and economically to produce a maximum yield of usable lumber. This method is called _______ a. Plainsawing 17. What are the nominal dimensions of a standard sheet of plywood sheathing? a. 4x8 ft 18. What is the most common spacing for studs in conventional light wood frame construction? a. 16” oc 19. Which type of framing system is most commonly used in contemporary light wood frame structures? a. Platform 20. 2x4, 2x8, and 2x12 all refer to the ________ dimensions of standard sizes of dimensional lumber a. Nominal 21. In a two-way steel frame system, a _______ is considered a primary structural member and a

_______ is considered a secondary structural member. a. Grider, bream 22. Steel is any of a range of alloys of iron that contains less than 2% _________. a. Carbon 23. Which of the following statements about cast iron and steel is true? a. cast iron contains more impurities (like phosphorus, sulfur, oxygen) than steel 24. Which of these structural elements typically is not used for long spans? a. Wide-flange 25. Fireproofing is typically required on low-rise steel frame structures. a. False 26. The exposed braced wall framing often found in buildings from the Middle Ages and early Renaissance is known as _______. a. Half-timbering 27. What is the approximate maximum span (in feet) for sawn timbers? a. 20 to 30 28. When exposed to fire, a heavy timber beam, though deeply charred by gradual burning, will continue to support its load long after a similarly sized unprotected steel beam exposed to the same conditions has collapsed. a. True 29. Which of the following is not typically used for longer spans in heavy timber construction? a. Sawn lumber 30. Structural panels laminated from solid lumber in layers with the orientation of each layer perpendicular to the one above or below are known as ________. a. Cross laminated timber (CLT) 31. Which of the following materials is typically used for pile foundations? a. A + b + c 32. Which of the following is not a type of shallow foundation? a. Concrete caisson 33. ________ is generally the best material on which to bear the foundation of a building. a. Rock 34. What are the two fundamental approaches to waterproofing a building foundation? a. Membrane drainage 35. The type of foundation used in a building is determined primarily by ________ and ________. a. Soil conditions, building loads. 36. Which of the following architects experimented with different forms of vernacular traditions and crafts? a. A, b and c 37. What are SIPs? a. Structural insulated panels 38. What are mycelium blocks? a. Blocks of cultured fungi 39. Is it estimated that between a third and half of the world's population lives in buildings constructed of earth a. True 40. What is a soddie? a. Structure made of cut sod blocks b.

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