Mean, rank, t-test and significance of the respondents on GB construction needs.
|S/n||Items||Total sample||Group 1||Group 2||t-cal||Sig.|
|36||Reducing building site pollution||4.43||2||4.33||3||4.48||1||−1.13||0.26|
|37||Shedding top-soil and avoiding top soil run-off||4.18||8||4.00||9a||4.27||6a||−1.87||0.06|
|38||Minimizing impact of light pollution||4.28||5||3.93||12||4.46||2a||−3.91||0.00|
|39||Avoiding site disturbances to minimize degradation||4.12||11||3.83||14||4.27||6a||−2.93||0.00|
|40||Site erosion control||4.30||3a||4.15||6||4.37||4||−1.37||0.17|
|42||On-site manufacturing techniques||4.10||12||4.09||8||4.11||13||−0.15||0.88|
|43||Improving material handling||4.19||7||4.15||6||4.20||8a||−0.31||0.76|
|44||Effective procurement as at when needed||4.23||6||4.35||2||4.17||11||1.22||0.22|
|45||Efficient storage as pertains to materials and products||4.30||3a||4.28||4||4.30||5||−0.14||0.89|
|46||Accurate installations of materials and products||4.46||1||4.46||1||4.46||2a||−0.04||0.97|
|47||Managing Indoor Air Quality (IAQ)||4.13||10||4.00||9a||4.20||8a||−1.31||0.19|
|48||Reusing onsite generated topsoil in landscaping||3.85||17||3.72||16||3.92||17||−1.07||0.29|
|49||Metering site electrical and water usage||4.04||13a||3.98||11||4.07||15||−0.52||0.60|
|50||Communicating site goals with sanctions for defaulters||4.04||13a||3.87||13||4.12||12||−1.67||0.10|
|51||Sourcing reclaimed materials for site equipment||3.87||16||3.63||17||4.00||16||−1.92||0.06|
|52||Conducting safety meetings for goal assessment and alignment||4.17||9||4.15||6||4.18||10||−0.17||0.87|
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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