The activities in the following table describe the construction of a new house. Construct the associated project network.

Activity Predecessor(s) Duration (days)
A: Clear site — 1 B: Bring utilities to site — 2 C: Excavate A 1 D: Pour foundation C 2 E: Outside plumbing B, C 6 F: Frame house D 10 Activity Predecessor(s) Duration (days)
G: Do electric wiring F 3 H: Lay floor G 1 I: Lay roof F 1 J: Inside plumbing E, H 5 K: Shingling I 2 L: Outside sheathing insulation F, J 1 M: Install windows and outside doors F 2 N: Do brick work L, M 4 O: Insulate walls and ceiling G, J 2 P: Cover walls and ceiling O 2 Q: Insulate roof I, P 1 R: Finish interior P 7 S: Finish exterior I, N 7 T: Landscape S 3