Environmental Impacts of Multi-Storey Buildings Using Different ...

- 146 -T I M B E R P L U S B U I L D I N G M A I N T E N A N C EStairs Lifetime # of replacements Mass of replacements (tonnes)T Stairs 15 3 16.58 Princeton, 2008RoofS Roof Cladding 40 0.5 1.67 Szalay 2006S/G Spouting 40 0.5 0.20 Kirk et al. 1995S/G Downpipes 40 0.5 0.16 Kirk et al. 1995S Wall Cladding 40 0.5 0.90 Szalay 2006Exterior walls (Envelope)T Exterior Cavity Battens 50 0.2 0.55 Szalay 2006T Exterior Wall Cladding 40 0.5 11.68 Kirk et al. 1995T Exterior Wall Cladding 30 1 1.11 Kirk et al. 1995P Exterior Walls 8 6.5 1.91 Szalay 2006T Soffit Framing 40 0.5 0.31 Kirk et al. 1995T Soffit Lining 40 0.5 0.22 Kirk et al. 1995P Exterior Soffits 8 6.5 0.06 Szalay 2006T Parapet Framing 40 0.5 0.29 Kirk et al. 1995Interior wallT Interior Wall Cladding 30 1 10.23 Kirk et al. 1995P Interior Walls 8 6.5 5.06 Szalay 2006MDF 15 MDF 40 0.5 7.45 Princeton, 2008WindowsG Windows 40 0.5 15.80 Szalay 2006Al Windows 40 0.5 0.52 Szalay 2006T Window frames 40 0.5 0.61 Szalay 2006DoorsG Doors 40 0.5 0.17 Szalay 2006T Doors 40 0.5 1.00 Szalay 2006P Doors 8 6.5 0.15 Szalay 2006T Door frames 40 0.5 0.01 Szalay 2006Ceiling officesP Ceilings 8 6.5 0.06 Szalay 2006MDF 17 MDF ceiling tiles 40 0.5 26.86 Princeton, 2008LouversP Louvres 8 6.5 1.43 Szalay 2006