Adopting green building constructions in developing countries through capacity building strategy: survey of Enugu State, Nigeria

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Table 2

Mean, rank, t-test and significance of the respondents on GB site needs.

S/n	Items	Total sample		Group 1		Group 2		t-cal	Sig.

		Mean	Rank	Mean	Rank	Mean	Rank
21	Site assessment for contaminants	4.32	1	4.43	1	4.26	2^a	1.19	0.24
22	Land recycling and redevelopment including brownfields, grayfield and blackfield	4.07	7	3.96	7	4.13	7	−1.06	0.29
23	Site repair and restoration	4.04	8^a	4.13	4	4.00	11	0.74	0.46
24	Best green site practices e.g. avoiding compaction	3.73	15	3.46	15	3.87	14	−1.73	0.09
25	Restricting construction vehicle traffic driveways/accesses	3.90	13	3.74	12	3.99	12^a	−1.30	0.19
26	Integrating landscape areas against parking spaces	3.95	11	3.70	13	4.08	9^a	−2.12	0.04
27	Leveraging on natural environment in landscaping for controlled heating and cooling	4.13	4	3.91	9	4.24	4	−2.22	0.03
28	Orientating buildings for efficiency of the desired outcome (cold or heat)	4.19	3	4.22	2	4.18	5^a	0.23	0.82
29	Site stormwater management	4.02	10	3.87	10	4.10	8	−1.26	0.21
30	Reusing and upgrading of old sites and buildings over greenfields	3.91	12	4.11	5	3.81	15	1.39	0.17
31	Reducing car dependence or sprawl to minimize pollution	4.04	8^a	3.98	6	4.08	9^a	−0.55	0.58
32	Creating an accessible pedestrian walk and bicycle paths	4.29	2	4.15	3	4.36	1	−1.33	0.19
33	Topography management	4.10	5^a	3.78	11	4.26	2^a	−2.82	0.01
34	Hydrology management	3.83	14	3.52	14	3.99	12^a	−2.26	0.03
35	Designating staging areas for materials	4.10	5^a	3.93	8	4.18	5^a	−1.33	0.18
	Cluster value	4.04		3.93		4.10		−1.92	0.06

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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