| Model parameters (Main variables) | Sub-Variables |
| Impacts from the transportation of completed modules | 1. Energy use rate of the vehicle for transport of module and equipment |
| 2. Impact per unit rate for the energy use for the transportation of completed modules |
| 3. Number of trips from the offsite yard to the final site |
| 4. Round trip distance from offsite yard to site. |
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| Impacts from material transport | 1. Number of trips during material transport |
| 2. Roundtrip distance for material delivery to the offsite construction yard |
| 3. Energy use rate of the vehicle for material transport |
| 4. Impact per unit rate for the energy used in the transportation of materials. |
| |
| Impacts from employee transport | 1. Number of employees |
| 2. Energy use rate by the vehicle that is used for employee transport |
| 3. Impact per unit rate for energy that is used by employee's vehicle |
| 4. Average round trip distance for employees to the offsite construction facility |
| 5. Number of trips by employees to the offsite facility |
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| Impacts of the use of equipment | 1. Duration of use for the equipment at the offsite construction facility |
| 2. Energy use rate for the equipment |
| 3. Impact per unit rate for the energy that is used by the equipment |
| |
| Impacts of building maintenance | 1. Area of the building |
| 2. Energy use per square area of the building |
| |
| Impacts from the loading of modules | 1. Number of loads |
| 2. Energy used for each load of building modules or panels |
| 3. Impact per unit rate for the energy that is used in loading operation. |
| |
| Impacts for the onsite portion of work for the offsite construction project (includes foundation construction and miscellaneous onsite works) |
| | |
| Impacts of the construction of the foundation for the building | 1.? Round trip distance for transportation of all equipment that are used during the foundation work |
| 2.? Number of trips for transportation of equipment for the foundation work on site |
| 3.? Energy use rate for the equipment for foundation works. |
| 4. Impact per unit rate for the energy for the equipment that are used for foundation work. |
| 5.? Energy use rate for the material transport for foundation works |
| 6.? Round trip distance for material transport for foundation works |
| 7.? Number of trips for material transport for foundation works |
| 8.? Impact per unit rate for energy used for material transport for foundation works |
| 9.? Energy use rate for employee transport for foundation works |
| 10.? Roundtrip distance for employee transport for foundation works. |
| 11. Number of trips for transportation of employees during foundation works |
| 12. Energy use rate for employee transport for foundation works. |
| 13. Impact per unit rate for employee transport for foundation works. |
| |
| Impacts for assembly of prefabricated modules/panels onsite | 1. Duration of module assembly |
| 2. Energy use rate during the assembly process for modules onsite |
| 3. Impact per unit rate for the energy that is used for module assembly. |
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| Impacts from miscellaneous onsite portion of work for the offsite construction project. | 1.? Roundtrip distances for material transport for all miscellaneous works |
| 2.? Number of trips for material transport for miscellaneous works |
| 3.? Energy use rate for material transport for miscellaneous works |
| 4.? Impact per unit rate for material transport for miscellaneous works. |
| 5.? Energy use rate for transportation of equipment for miscellaneous works |
| 6.? Round trip distance for equipment transport for miscellaneous works |
| 7.? Number of trips for equipment transport for miscellaneous construction works |
| 8.? Impact per unit rate for energy that is used for material transport. |
| 9.? Round trip distance for employee transport for miscellaneous construction works |
| 10. Number of trips for employee transport for miscellaneous construction works |
| 11. Impact per unit rate for the energy that is used for employee transport for miscellaneous construction works. |
| 12. Energy use rate for the vehicle that is used for employee transport for miscellaneous construction activities? |
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| Impacts from the transportation of equipment for module installation to the site | 1. Round trip distance from the offsite construction yard to the site (while transporting equipment for panel/module installation) |
| 2. Number of trips for transportation of equipment for installation of panels/modules on site. |
| 3. Energy use rate for the vehicle to transport the equipment for module/panel installation |
| 4. Impact per unit rate for the energy that is used by the vehicle transporting the module/panel installation equipment to the final site location |
| |
| Onsite construction (Variables for the foundation works, superstructure works, and miscellaneous construction activities) |
| Total impacts for onsite construction | 1. Round trip distance for employee transport for the foundation, superstructure, and miscellaneous finishes onsite. |
| 2. Energy use rate for the vehicle for employee transportation for foundation, superstructure, and miscellaneous construction works |
| 3. Number of trips for employee transport for the foundation, superstructure, and miscellaneous finishes |
| 4. Impact per unit rate for energy that is used for employee transport for the foundation, superstructure, and miscellaneous construction works. |
| 5. Round trip distance for equipment transport for the foundation, superstructure, and miscellaneous finishes on-site. |
| 6. Energy use rate for the vehicle for the transportation of equipment for foundation, superstructure, and miscellaneous construction works |
| 7. Number of trips for equipment transport for the foundation, superstructure, and miscellaneous finishes |
| 8. Impact per unit rate for energy that is used for equipment transport for the foundation, superstructure, and miscellaneous construction works. |
| 9. Round trip distance for material transport for the foundation, superstructure, and miscellaneous finishes on the site. |
| 10. Energy use rate for the vehicle for the transportation of materials for the foundation, superstructure, and miscellaneous construction works |
| 11. Number of trips for material transport for the foundation, superstructure, and miscellaneous finishes |
| 12. Impact per unit rate for energy that is used for transportation of material for the foundation, superstructure, and miscellaneous construction works. |
