Concrete Class

Current Price for Construction (KES)

Net Present Value (NPV)

Internal Rate of Return (IRR)

N/mm².

25

31,887,391

31,887,391

0%

30

33,718,185

32,412,497

2%

35

37,738,483

35,855,978

2%

80

38,114,759

35,490,631

3%