Mean, rank, t-test and significance of the respondents on GB operation and maintenance needs.
|S/n||Items||Total sample||Group 1||Group 2||t-cal||Sig.|
|Operating GB requires:|
|53||Proper documentation of installations and input details||4.47||1||4.63||1||4.39||1||2.13||0.03|
|54||Establishing commissioning or certification criteria of a project||4.26||5||4.11||6||4.34||2a||−1.54||0.13|
|55||Providing operational and maintenance manual of buildings||4.29||3||4.22||4||4.33||4||−0.76||0.45|
|56||Using automated monitors for energy and water consumption||3.99||12||3.85||13||4.07||12||−1.19||0.24|
|57||Determining material life cycle||4.21||6||4.07||7||4.28||6||−1.45||0.15|
|58||Integrating composting to eliminate disposals||3.91||13a||3.83||14||3.96||13||−0.71||0.48|
|59||Training building occupants and stakeholders on operation and maintenance of features||4.32||2||4.28||3||4.34||2a||−0.37||0.71|
|Maintaining GB requires:|
|60||Estimating schedules for repairs or replacement||4.27||4||4.17||5||4.31||5||−1.01||0.31|
|61||Evaluating components' routine/reactive maintenance||4.06||11||3.96||11a||4.11||11||−0.98||0.33|
|62||Using non-toxic compounds in cleaning||3.91||13a||3.96||11a||3.89||14||0.35||0.73|
|63||Avoiding chemicals or materials with volatile organic compounds (VOCs)||4.19||7||4.30||2||4.13||10||0.97||0.33|
|64||Energy auditing of equipment and products before reinstallations||4.10||10||4.00||9||4.16||9||−1.03||0.30|
|65||Selecting higher efficiency products during updates||4.14||8a||3.98||10||4.22||7||−1.65||0.10|
|66||Updating structures with more durable systems||4.14||8a||4.04||8||4.19||8||−0.95||0.34|
Note: Group 1 refers to lecturers, instructors, teachers and technologists teaching building construction and related trades in tertiary and secondary institutions. Group 2 refers to building industry workers such as engineers, architects, technicians, plumbers, etc with minimum of Senior Secondary certificate in building related trades. a = Equal ranks wherein the next rank is skipped; t-cal = Calculated t-value; Sig. = Level of significance at 0.05.
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