1.6 : Embodied Energy of Building Assemblies
| 1.6.5 |
Embodied Energy
of Other Commercial Roof Assemblies in the U.S. |
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Embodied Energy |
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CO2 Equivalent |
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(MMBtu/SF) (1) |
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Emissions (lbs/SF) |
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| Precast
Hollow-Core Concrete |
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| EPDM Membrane |
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0.17 |
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21.23 |
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| PVC Membrane |
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0.26 |
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30.89 |
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| Modified
Bitumen Membrane |
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0.26 |
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31.94 |
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| 4-Ply Built-Up
Roofing System |
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0.44 |
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51.68 |
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| Steel Roofing
System |
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0.11 |
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20.24 |
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| Precast
Double-T |
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| EPDM Membrane |
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0.15 |
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17.42 |
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| PVC Membrane |
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0.24 |
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27.05 |
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| Modified
Bitumen Membrane |
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0.25 |
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28.13 |
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| 4-Ply Built-Up
Roofing System |
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0.43 |
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47.86 |
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| Steel Roofing
System |
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0.10 |
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16.42 |
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| Suspended
Concrete Slab |
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| EPDM Membrane |
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0.24 |
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37.32 |
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| PVC Membrane |
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0.33 |
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46.96 |
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| Modified
Bitumen Membrane |
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0.33 |
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48.04 |
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| 4-Ply Built-Up
Roofing System |
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0.51 |
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67.75 |
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| Steel Roofing
System |
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0.18 |
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36.33 |
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| Open-Web Steel
Joist, Steel Decking (2) |
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| EPDM Membrane |
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0.17 |
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15.28 |
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| PVC Membrane |
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0.26 |
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24.93 |
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| Modified
Bitumen Membrane |
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0.26 |
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26.01 |
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| 4-Ply Built-Up
Roofing System |
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0.45 |
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45.72 |
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| Steel Roofing
System |
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0.12 |
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14.29 |
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| Note(s): |
Assumptions:
60 year building lifetime. Low rise building. Values are general estimations
for the U.S. All roof assemblies include R-20 continuous insulation,
polyethylene membrane, and latex paint. All assemblies are insulated to IECC
2009 minimums for zones 3 and 6. 1) Embodied Energy: Energy use includes
extraction, processing, transportation, construction, and disposal of each
material. 2) Includes gypsum board. |
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