Copyright Goodheart-Willcox Co., Inc. 425 31. How can the appearance of poured concrete be modifi ed? A. Pigment can be mixed in wet concrete. B. Designs may be stamped on the surface. C. Fibers and aggregate can be added. D. All of the above. 32. When pieces with historical signifi cance, such as portions of a building façade, are incorporated into a design, it is said to be _____. A. upcycled B. renewed C. repeated D. low-impact 33. True or False? Gravel is considered a low- impact material because it creates a permeable groundcover that allows water to drain. A. True. B. False. 34. Churt, river rocks, decomposed granite, lava rocks, and crushed stone are all types of _____. A. asphalt B. gravel C. pavers D. sealers 35. True or False? Installing permeable hardscapes reduces the impact a design may have on the local environment. A. True. B. False. 36. True or False? Dry-laying is the application of thin layer of fi ne aggregate to the surface of the wet concrete. A. True. B. False. 37. True or False? Wet-laying is the installation of a hardscape with wet concrete below and between the pavers or stones. A. True. B. False. 38. The amount of material ordered should be 5% to 10% greater than the actual estimated need of the project to _____. A. cut costs by saving the extra for another job B. bump up the cost of the job and earn more profi t C. compensate for defective or broken pieces D. All of the above. 39. True or False? Machines with wheels do less damage than machines with tracks. A. True. B. False. 40. Which of the following is used to compact subsurface materials? A. The workers’ feet and body weight. B. A skid-steer or backhoe. C. A vibratory or hand tamper. D. All of the above. 41. True or False? A municipality may deem a hardscape as an impermeable surface requiring stormwater design considerations. A. True. B. False. 42. For what purpose is a rotary transit used in hardscape installations? A. To move materials around the landscape. B. It can be used to photograph the site. C. Determine correct depth for plant materials. D. The tool can be used to set the grade. 43. True or False? One of the key elements of hardscape construction is adequate compaction of the subsurface. A. True. B. False. 44. The standard subsurface depth for walks and patios is ____. A. 4″ B. 6″ to 8″ C. 12″ D. 13″
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