Figure shows a house whose walls consist of plaster (R = 0.45), R-11 fiberglass insulation, plywood (R = 0.65), and cedar shingles (R = 0.55). The roof has the same construction except it uses R-30 fiberglass insulation. The average outdoor temperature in winter is 25 ?F , and the house is maintained at 75 ?F. The house's oil furnace produces 100,000 Btu for every gallon of oil, and oil costs $2.20 per gallon. Assume that the house has 10 single-glazed windows, each measuring 3.0 ft by 4.9 ft. Four of the windows are on the south and admit solar energy at the average rate of 30 Btu/h?ft2. All the windows lose heat; their R- factoris 0.90. Find the total heating cost for the month. How much is the solar gain worth?

Figure shows a house whose walls consist of plaster (R = 0.45), R-11 fiberglass insulation, plywood (R = 0.65), and cedar shingles (R = 0.55). The roof has the same construction except it uses R-30 fiberglass insulation. The average outdoor temperature in winter is 25 ?F , and the house is maintained at 75 ?F. The house's oil furnace produces 100,000 Btu for every gallon of oil, and oil costs $2.20 per gallon. Assume that the house has 10 single-glazed windows, each measuring 3.0 ft by 4.9 ft. Four of the windows are on the south and admit solar energy at the average rate of 30 Btu/h?ft2. All the windows lose heat; their R- factoris 0.90. Find the total heating cost for the month. How much is the solar gain worth?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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