A Comparison of Life Cycle Impact of Mass Timber and Concrete in Building Construction
Table 3. Material groups 1, 2 & 3 for the LCA for the threebuilding scenario.
| Material | Unit | Material group 1 | Material group 2 | Material group 3 |
| #15 Organic Felt | m2 | 889.23 | 889.23 | 889.23 |
| 8" Normal Weight Concrete Block | Blocks | 2100.83 | - | - |
| Aluminum Window Frame | kg | 76.55 | 76.55 | 76.55 |
| Ballast (aggregate stone) | kg | 7445.45 | 7445.45 | 7445.45 |
| Blown Cellulose | m2 (25mm) | 311.63 | 311.63 | 311.63 |
| Cold Rolled Sheet | Tonnes | 0.03 | - | - |
| Concrete Benchmark CAN 25 MPa | m3 | 6.27 | 6.27 | 6.27 |
| Concrete Benchmark CAN 30 MPa | m3 | 61.34 | 35.26 | 35.26 |
| Cross Laminated Timber | m3 | - | 14.39 | 14.39 |
| Concrete Brick | m2 | 168.07 | - | - |
| Expanded Polystyrene | m2 (25mm) | 24.89 | 24.89 | 24.89 |
| Galvanized Sheet | Tonnes | 0.22 | 0.22 | 0.22 |
| Glass Fibre | kg | 315.00 | 315.00 | 315.00 |
| Glazing Panel | Tonnes | 0.36 | 0.36 | 0.36 |
| GluLam Sections | m3 | - | 6.97 | - |
| Grout-Coarse | m3 | 6.73 | - | - |
| Hollow Structural Steel | Tonnes | - | 0.16 | 0.16 |
| Laminated Veneer Lumber | m3 | 0.33 | 0.33 | 6.68 |
| Mortar | m3 | 6.78 | - | - |
| Nails | Tonnes | 0.12 | 0.12 | 0.12 |
| Precast Concrete | m3 | 11.21 | 11.21 | 11.21 |
| Rebar, Rod, Light Sections | Tonnes | 5.80 | 0.41 | 0.41 |
| Roofing Asphalt | kg | 4997.69 | 4997.69 | 4997.69 |
| Screws Nuts & Bolts | Tonnes | - | 0.02 | 0.02 |
| Small Dimension Softwood Lumber, kiln-dried | m3 | 4.05 | 4.05 | 4.05 |
| Softwood Plywood | m2 (9mm) | 172.42 | 172.42 | 172.42 |
| Solvent Based Alkyd Paint | L | 2.72 | 2.72 | 2.72 |
| Spruce Wood Bevel Siding | m2 | - | 422.57 | 422.57 |
| Type III Glass Felt | m2 | 1778.46 | 1778.46 | 1778.46 |
| Water Based Latex Paint | L | - | 227.26 | 227.26 |
| Welded Wire Mesh / Ladder Wire | Tonnes | 0.34 | 0.34 | 0.34 |
| Total mass value | Tonnes | 312.26 | 150.45 | 155.08 |