Engineering Economics

Focus on the difference between feasible alternatives (Principle 2)! Insulated concrete forms (ICF) can be used as a substitute for conventional wood framing in building construction. Heating and cooling bills will be about 60% less than in a similar wood-framed building in upstate New York. An ICF home will be approximately 20% more expensive to construct than a wood-framed home. For a typical 2.100 ft home costing $130 ft to construct n upstate New York and costing $280 per month to heat and cool, how many months does it take for a 2,100 ft2 ICF home to pay back its extra construction cost