| No | Factors Due to Consultant Firms Administration and Staff Firms | Mean | Standard Deviation | The Relative Weight (%) | The Value of the Test | P- Value | Rank |
|---|---|---|---|---|---|---|---|
| 1- | Lack of QA/QC program during design. | 4.09 | 0.96 | 81.80 | 8.61 | 0.00 | 4 |
| 2- | Poor technical updating and poor staff training. | 3.98 | 0.92 | 79.60 | 8.22 | 0.00 | 5 |
| 3- | Decision that is not in accordance with codes. | 3.78 | 1.04 | 75.60 | 5.79 | 0.00 | 6 |
| 4- | Poor or Lack of engineering supervision during construction of residential buildings or unqualified supervision | 4.52 | 0.82 | 90.40 | 14.06 | 0.00 | 1 |
| 5- | Hiring unqualified designers. | 4.27 | 0.78 | 85.40 | 12.45 | 0.00 | 2 |
| 6- | Poor field of experience and technical background for structural designers. | 4.15 | 0.93 | 83.00 | 9.57 | 0.00 | 3 |
| 7- | Design buildings that do not work as intended by the owner (making drop beams, place and size of columns, etc.) which lead to change in design without consulting the engineer. | 3.76 | 1.07 | 75.20 | 5.46 | 0.00 | 7 |
| 8- | Poor communication between the design firms and the owner. | 3.61 | 1.03 | 72.20 | 4.53 | 0.00 | 8 |