Discussion Handout 16 Optional Worksheet 5 Answer Key

Discussion Handout 16 Optional Worksheet 5 Answer Key - ARC...

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ARC 308 Architecture and Society 00495 & 00470 Spring 2011 TA: Emily Ray emilyelray@gmail.com Discussion Handout #16 OPTIONAL WORKSHEET REVIEW 5 THERMAL DELIGHT IN ARCHITECTURE ANSWER KEY 1. In the first chapter, Necessity , Lisa Heschong gives several examples of microclimate. Name four examples of microclimates (pages 3-8): a. The slope of a hill that faces the sun or is sheltered from a cold wind will be warmer than the opposite slope. Indeed, this is a variation in microclimate. (3) b. Migration to regions of more favorable microclimates. The Piute Indians of California climbed into the mountains during the summer to enjoy the coolness of a higher elevation. (6) c. Nest building is, in a way, a more advanced way of choosing the best microclimate. (7) d. Buildings can be viewed as a way to modify the landscape to create more favorable microclimates. (8) 2. What does the term “vernacular” mean (page 8)? Vernacular architecture uses locally available resources and traditions to address local needs. Vernacular architecture revolves over time and reflects the environmental, cultural, and historical context in which it exists. 3. Define the following terms used by Heschong: a. Heat capacity: The capacity of a material to absorb and store heat energy. b. Thermal mass: The capacity of a material to absorb and store heat energy. c. Solar radiation: Energy from the sun in the form of light rays and heat. d. Thermal radiation: Heat energy. e. Thermal reradiation: Heat energy is absorbed and stored by materials of high heat capacity and released slowly over time. 4. Explain how the primitive builders of the desert and the tropics used forms and materials that effectively moderated prevailing climatic conditions (pages 8-9): a. Desert: The problem is extremely high daytime temps and low nighttime temps. The ideal building material has a high heat capacity in order to absorb solar radiation during the day and slowly reradiate it at night. The desert builders of the American southwest, the Middle East, and Africa used adobe, mud, rubble, clay, and stone. b. Tropics: The problem is heat and humidity. The primitive builders of the South Pacific, Caribbean, Florida, and Japan reduced thermal mass to a minimum using light materials such as bamboo and reeds to avoid significant reradiation of heat. Ventilation was maximized to increase the potential for evaporative cooling
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by placing large openings in the walls or by eliminating walls altogether. Large roofs provided shade and shelter from the rains. 5. Why was the Franklin Stove a revolutionary reinvention of the traditional fire-heated chimney (page 14)? The Franklin stove was used to indirectly heat the air and then circulated the warm air throughout the house. It initiated the changeover from a radiant to a convective system of heating. The stove was transformed into a furnace. For the first time people began to understand the building as an enclosure for a bubble of warmed air and strove to make the building more airtight. Simply blocking out the rain and wind
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This note was uploaded on 04/02/2011 for the course ARC 308 taught by Professor Speck during the Spring '08 term at University of Texas at Austin.

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Discussion Handout 16 Optional Worksheet 5 Answer Key - ARC...

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