A New Approach to Studying Net Present Value and the Internal Rate of Return of Engineering Projects under Uncertainty with Three-Dimensional Graphs

Table 1

Baseline data for motorway construction [33].

Year	Costs (mil. €)		Benefits (mil. €)
	1	(94.9)	0	0	0	0	0
2	(92.1)	0	0	0	0	0
3	(57)	0	0	0	0	0
4	0	(0.8)	10.7	1.3	0.4	0.1
5	0	(0.8)	11.5	1.4	0.4	0.1
6	0	(0.8)	12.3	1.5	0.5	0.1
7	0	(0.8)	13.2	1.5	0.5	0.1
8	0	(0.8)	14.1	1.6	0.5	0.1
9	0	(0.8)	15	1.7	0.5	0.2
10	0	(0.8)	16	1.8	0.6	0.2
11	0	(0.8)	17	1.9	0.6	0.2
12	0	(0.8)	18	2	0.6	0.2
13	0	(0.8)	19	2	0.7	0.2
14	0	(0.8)	20	2.1	0.7	0.2
15	0	(6.9)	20.7	2.1	0.7	0.2
16	0	(6.2)	22	2.2	0.7	0.2
17	0	(5.8)	23	2.2	0.8	0.2
18	0	(5.2)	24	2.3	0.8	0.3
19	0	(4.4)	25	2.4	0.8	0.3
20	0	(0.8)	25.4	2.4	0.9	0.3
21	0	(0.8)	26	2.5	0.9	0.3
22	0	(0.8)	29	2.5	1	0.3
23	0	(0.8)	29	2.6	1	0.4
24	0	(0.8)	30	2.6	1	0.4
25	0	(0.8)	30.5	2.7	1	0.4
26	0	(0.8)	34	2.8	1.1	0.4
27	0	(0.8)	35	2.8	1.2	0.4
28	0	(0.8)	36	2.9	1.2	0.5
29	0	(0.8)	37	2.9	1.2	0.5
30	151	(0.9)	37.7	3	1.2	0.5