Table 7: The statistical results of key challenges /barriers of LPC implementation.

No. Factor Mean Std. RII % T-test P-value Rank
1 Resistance of managers to change planner system 3.82 1.221 76.327 6.617 0.000 12
2 Failure of management commitment to LPC implementation 4.05 1.134 81.020 9.175 0.000 7
3 Lack of human capital 3.16 1.544 63.265 1.046 0.000 16
4 Lack of understanding of new system 3.71 1.339 74.286 5.280 0.000 13
5 Lack of skills, training, and experience 4.13 1.090 82.653 10.286 0.000 1
6 Non-supportive organizational climate 3.83 1.308 76.531 6.254 0.000 11
7 Lack of stakeholder support 3.91 1.236 78.163 7.274 0.000 10
8 Lengthy approval procedure from client and top management 4.11 1.064 82.245 10.351 0.000 3
9 Misuse of information generated during implementation of LPC 4.11 0.962 82.245 11.446 0.000 3
10 Partial or late implementation of LPC 3.94 1.208 78.776 7.691 0.000 9
11 Unavailability of coordinate and cooperation between parties 3.96 1.183 79.184 8.024 0.000 8
12 Short-term vision 3.03 1.516 60.612 0.200 0.000 18
13 Misinterpretation of PPC indicator 3.32 1.517 66.327 2.064 0.000 14
14 Involvement of many parties joined the project, especially subcontractors and suppliers 3.23 1.491 64.694 1.558 0.000 15
15 Weak communication among participants of the production process 3.13 1.597 62.653 0.822 0.000 17
16 Lack of integration between client, consultant, contractor and supplier 4.06 1.073 81.224 9.793 0.000 6
17 Lack of implementation of advanced technology in construction 4.07 1.077 81.429 9.849 0.000 5
18 Lack of the training program for the managers 4.13 0.970 82.653 11.559 0.000 1

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