Type Residential   Commercial   Offices
Range(%)                                      Frequency and Percentages
0-20 72 (64.3%)   15   (13.4%)   33    (29.5%)
21-40 26(23.2%)   18    (16.0%)   60    (53.6%)
41-60 7(6.3%)   30    (26.8%)   18    (16.0%)
61-80 7       (6.2%)   47    (42.0%)   1     (0.9%)
81-100 0       (0.0%)   2     (1.8%)   0     (0.0%)
Total 112 (100%)   112    (100%)   112 (100%)
Source: Field Data (2012)
Table 6: Sawnwood substitution in the building industry in Dar es Salaam.