Exact Overlap Rate Analysis and the Combination with 4D BIM of Time-Cost Tradeoff Problem in Project Scheduling

Table 2

The optimal overlapping strategy of the case.

Overlap activity	Overlap rate	Overlap duration (days)	Rework duration (days)	Rework probability	Rework cost (dollars)
1–5	0.218026	6.54	1.31	0.10	256.69
1–6	0.299989	7.20	1.44	0.46	388.77
5–7	0.21767	3.92	0.78	0.10	153.51
6–8	0.499969	12.00	2.40	0.41	1079.86
6–9	0.599973	15.00	3.00	0.45	1619.86
2–10	0.799835	26.39	5.28	0.52	3800.03
6–10	0.799959	26.40	5.28	0.52	3801.21
7–11	0.599985	12.00	2.40	0.58	1295.93
8–11	0.599974	12.00	2.40	0.58	1295.89
5–12	0.285024	8.55	1.71	0.10	438.69
9–12	0.286209	8.59	1.72	0.10	442.35
10–12	0.285853	8.58	1.72	0.10	441.24
3–13	0.499996	12.00	2.40	0.55	1079.98
4–14	0.749908	13.50	2.70	0.50	1822.06
9–14	0.749951	13.50	2.70	0.50	1822.26
12–15	0.8	12.8	2.56	0.64	1843.2
13–16	0.217192	6.52	1.30	0.10	254.73
14–16	0.218397	6.55	1.31	0.10	257.57
11–17	0.699977	16.80	3.36	0.48	2116.66
14–17	0.699992	16.80	3.36	0.48	2116.75
15–17	0.699999	16.80	3.36	0.48	2116.80
16–18	0.216634	3.90	0.80	0.10	152.05
17–18	0.218784	3.94	0.79	0.10	155.09