Problem 1. A pump is to be installed on a concrete slab. The slab is poured in two parts, and, as only one set of shuttering is available, the first pour to be made is that which will carry the pump. After the first pour is cured, the pump installation can take place if the pump has been delivered and the requisite lifting tackle obtained. Shuttering is stripped before curing is complete, but the shuttering for the second pour is not erected until first pour is fully cured. We have the following list of activities: Activity Duration Activity Duration (in days) (in days) (A) First shutter (H) Start second cure 1 (B) First Pour 0.5 (1) Finish second cure 1 (C) Start first cure 1 (J) Strip second shuttering (D) Finish first cure (K) Deliver pump 5 (E) Strip first shuttering (L) Install pump 2 (F) Second shutter 1.5 (M) Obtain lifting tackle 5 (G) Second pour 0.5 1.5 1 1 1 Draw the AON network for this project. Then find the completion time as well as the critical activities. [6] Problem 1. A pump is to be installed on a concrete slab. The slab is poured in two parts, and, as only one set of shuttering is available, the first pour to be made is that which will carry the pump. After the first pour is cured, the pump installation can take place if the pump has been delivered and the requisite lifting tackle obtained. Shuttering is stripped before curing is complete, but the shuttering for the second pour is not erected until first pour is fully cured. We have the following list of activities: Activity Duration Activity Duration (in days) (in days) (A) First shutter (H) Start second cure (B) First Pour 0.5 (1) Finish second cure 1 (C) Start first cure 1 (J) Strip second shuttering 1 (D) Finish first cure 1 (K) Deliver pump 5 (E) Strip first shuttering (L) Install pump 2 (F) Second shutter 1.5 (M) Obtain lifting tackle 5 (G) Second pour 0.5 (a) Draw the AOA network for this project. Then find the completion time as well as the critical activities. 1.5 1 1 [6]