Table 2.
Top ten delay causes ranked according to Frequency Index.
| Delay group | Cause | F.I |
|---|---|---|
| Owner related | 1.7 Type of project bidding and award (negotiation, lowest bidder) | 68.94 |
| Contractor related | 3.3 Ineffective planning and scheduling of project | 68.94 |
| Owner related | 1.6 Variation orders/changes of scope by owner during construction | 66.67 |
| Owner related | 1.3 Late in revising and approving design documents by owner | 65.15 |
| Owner related | 1.5 Finance and payments of completed work by owner | 64.39 |
| Contractor related | 3.2 Poor site management and supervision | 64.39 |
| Labor & equipment | 5.3 Low productivity level of labors | 64.39 |
| Contractor related | 3.1 Difficulties in financing project by contractor | 63.64 |
| Project related | 6.1 Effects of subsurface conditions (e.g., soil, high water table, etc.) | 62.12 |
| Owner related | 1.1 Slow decision making | 57.58 |