Table 1
Mean, rank, t-test and significance of the respondents on GB design needs.
| S/n | Items | Total sample | Group 1 | Group 2 | t-cal | Sig. | |||
|---|---|---|---|---|---|---|---|---|---|
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| Mean | Rank | Mean | Rank | Mean | Rank | ||||
| 1 | Good knowledge of GB through expert classes and trainings | 4.53 | 1 | 4.67 | 1 | 4.45 | 1 | 2.10 | 0.04 |
| 2 | Setting priorities of interest among GB goals | 4.11 | 11a | 4.04 | 8 | 4.15 | 16 | −0.70 | 0.49 |
| 3 | Sourcing energy saving-systems such as energy-efficient heating, ventilation and air conditioning (HVAC) for inclusion in design | 4.11 | 11a | 3.89 | 13 | 4.22 | 10 | −2.02 | 0.05 |
| 4 | Integrating enhanced solar-sensitive devices such as low-emissivity glass, sun-shading devices | 4.08 | 15a | 3.87 | 15a | 4.19 | 11 | −1.84 | 0.07 |
| 5 | Assembling integrated design team | 4.04 | 17 | 3.89 | 13 | 4.11 | 17 | −1.14 | 0.26 |
| 6 | Playing active role in articulating the design using integrated design process | 4.22 | 4 | 4.07 | 6a | 4.30 | 5a | −1.70 | 0.09 |
| 7 | Read and interpret schematic designs | 4.20 | 6a | 4.41 | 2 | 4.09 | 18 | 1.74 | 0.08 |
| 8 | Prepare detailed construction documents | 4.28 | 2 | 4.17 | 4 | 4.34 | 3a | −1.29 | 0.20 |
| 9 | Document GB measures required for building certification | 4.12 | 10 | 3.89 | 13 | 4.24 | 8 | −2.10 | 0.04 |
| 10 | Formulating initial budget of construction | 4.09 | 14 | 3.80 | 18 | 4.24 | 8 | −2.23 | 0.03 |
| 11 | Scheduling for purchases/procurement | 4.00 | 18 | 3.70 | 19a | 4.16 | 15 | −2.66 | 0.01 |
| 12 | Using collaborative software for building analysis | 4.20 | 6a | 4.24 | 3 | 4.18 | 12 | 0.36 | 0.72 |
| 13 | Initiating relational contracts or collaborative agreement with clarity of purposes | 4.16 | 9 | 3.87 | 15a | 4.30 | 5a | −2.75 | 0.01 |
| 14 | Integrating Building Information Modelling (BIM) and energy simulations in design and performance analysis | 4.18 | 8 | 4.07 | 6a | 4.24 | 8 | −0.98 | 0.33 |
| 15 | Applying technology towards GB development | 4.26 | 3 | 4.11 | 5 | 4.34 | 3a | −1.45 | 0.15 |
| 16 | Initiating and ensuring proper communication links | 4.08 | 15a | 3.91 | 11 | 4.17 | 13a | −1.42 | 0.16 |
| 17 | Familiarity with assessment systems and requirements | 3.92 | 20 | 3.70 | 19a | 4.03 | 20 | −1.80 | 0.07 |
| 18 | Using Life Cycle Costing (LCC) and Life Cycle Analysis (LCA) in selecting features | 3.98 | 19 | 3.85 | 17 | 4.04 | 19 | −1.07 | 0.29 |
| 19 | Reconfiguring design patterns to suit environment | 4.10 | 13 | 3.96 | 9 | 4.17 | 13a | −1.22 | 0.23 |
| 20 | Factoring workers motivational incentives in budget | 4.21 | 5 | 3.93 | 10 | 4.36 | 2 | −2.47 | 0.01 |
| Cluster value | 4.14 | 4.00 | 4.21 | −2.64 | 0.01 | ||||
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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