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The walls in your home have 25 mm of expanded polystyrene and 25 mm of rigid urethane foam. What is the R-value of your insulation? Check the R-value of 25 mm of expanded polystyrene. Check the R-value of 25 mm of rigid urethane foam. The total R-value of these two materials would be: 3.96 +7.50 = R 11.46. Table 6.2 R-values of Common Building Materials Thickness of Insulating Material Approximate R-value 25 mm of air space in a wall cavity 2.04 25 mm of air space with reflective surface 5.54 on inside of wall cavity 25 mm of expanded polystyrene 3.96 25 mm of rigid urethane foam 7.50 25 mm of fibreglass 25 mm of solid wood 25 mm of wood shavings 25 mm of clay brick 4.25 1.25 2.42 0.11 25 mm of concrete one thickness of glass 0.19 1.00 thermal glass (2 thicknesses with air space) 1.80 ce 14: Module 2 5 Assignment Booklet 2B 16. Calculate the R-values for the following combinations of insulation. Show your work. (Use the table of R-values on page 111 of the textbook.) a. 25 mm of rigid urethane foam plus 12.5 mm of solid wood plus 100 mm of fibreglass ext to the body in in meristic of Carbon brant b. 50 mm of rigid urethane foam plus 200 mm of concrete in the winter is a prean diver hood is Return to page 59 of the Student Module Booklet and begin Lesson 3. 2003 Alberta Education The walls in your home have 25 mm of expanded polystyrene and 25 mm of rigid urethane foam. What is the R-value of your insulation? Check the R-value of 25 mm of expanded polystyrene. Check the R-value of 25 mm of rigid urethane foam. The total R-value of these two materials would be: 3.96 +7.50 = R 11.46. Table 6.2 R-values of Common Building Materials Thickness of Insulating Material Approximate R-value 25 mm of air space in a wall cavity 2.04 25 mm of air space with reflective surface 5.54 on inside of wall cavity 25 mm of expanded polystyrene 3.96 25 mm of rigid urethane foam 7.50 25 mm of fibreglass 25 mm of solid wood 25 mm of wood shavings 25 mm of clay brick 4.25 1.25 2.42 0.11 25 mm of concrete one thickness of glass 0.19 1.00 thermal glass (2 thicknesses with air space) 1.80 ce 14: Module 2 5 Assignment Booklet 2B 16. Calculate the R-values for the following combinations of insulation. Show your work. (Use the table of R-values on page 111 of the textbook.) a. 25 mm of rigid urethane foam plus 12.5 mm of solid wood plus 100 mm of fibreglass ext to the body in in meristic of Carbon brant b. 50 mm of rigid urethane foam plus 200 mm of concrete in the winter is a prean diver hood is Return to page 59 of the Student Module Booklet and begin Lesson 3. 2003 Alberta Education
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Income Tax Fundamentals 2013
ISBN: 9781285586618
31st Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
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