For a roof of 10,000 sqf there exist 3 alternatives that are shown in the table. Study period=40 yrs and discount rate=3%. Energy (Heating fuel) cost is $3 per gal. Replacement of roof is $4.6 per sqf for all alternatives and insulation cost is $6 per sqf for alternative 1, $7 for alternative 2, and $9 for alternative 3. Alternate I Description R-40 insulation under 30 yr. EPDM Initial Investment Costs Energy Costs (Operational) Cost of insulation and roof from contractor estimate, heating system base -55F design temp $165,700 Discount Rate NIST 2016 Energy modeling using 13,500 hdd and 75% AFUE for oil fired boiler. 818 gal yr. EPDM at 30 years Insulation - 50 years Alternate 2 R-60 insulation under 30 yr. EPDM 3% Cost of insulation and roof from estimate less heating system demand reduction (-10,417btu) $178,600-$7,500 Energy modeling using 13.500 hdd and 75% AFUE for oil fired boiler 545 gal/yr. Maintenance Same for all altemates Same for all alternates Same for all alternates and Repair Replacement Costs Alternate 3 R-80 insulation under 30 yr. EPDM EPDM at 30 years Insulation -50 years Cost of insulation and roof from estimate less heating system demand reduction (-15,625 btu) $194,800-$14,350 Energy modeling using 13,500 hdd and 75% AFUE for oil fired boiler 409 gal yr. EPDM at 30 years Insulation -50 years 3% I am giving you the answer for alternative 1 at the next slide. Do the same for alternative 2 and 3. Find: (a) the Initial costs, (b) the operations costs, (c) the replacement costs, (d) the residual value for roof and insulation and perform the LCAA to find the best option. Show all your calculations. Quantity Unit Initial Expenses Initial Investment Cost (one time start-up costs) Construction 1 LPSM Future Expenses Operations Cost (annual costs) Heating Fuel Unit Cost Total Cost Years Present Value $165,700 $165,700 818 GALS $3.00 $2,454 Maintenance & Repair Cost (upkeep costs...estimate on annual basis) Replacement Cost (scheduled replacement of building system or component) Roof Systems 10,000 RFSF $46,000 Roof Insulation 10,000 RFSF $60,000 Roof Systems Roof Insulation Total Life Cycle of Alternate #1 Residual Value (value of facility at end of study period) 10,000 RFSF 10,000 RFSF $4.60 $6 $4.60 $6 $46,000 $60,000 0 40 30 50 30 50 $165,700 $56,724 $18,951 $0 -$9,401 -$3,679 $228,295