Draw overlap diagram network

Activity Number Duration 13.1 The activities and their overlapping relationships for a small building project are given below. Construct an overlapping precedence diagram for this project. Description (Days) Relationships 30 Activity Number Interior walls 3 Activity 30 can start after two days of Activity 25 have been com- Duration Description (Days) Relationships Demolition and 3. Begins the project. pleted. underground service 35 Plumbing Activity 35 can start after two days of Activity 20 have been done and after Activity 30 has been completed. 10 Concrete Activity 10 can begin after two days of Activity 5 have elapsed. Also once Activity 5 is finished three days of Activity 10 re- main to be done. 6. work Activity 40 can start after two days of Activity 20 have been done and after Activity 30 has been completed. Electrical work 40 6. 15 Exterior walls Activity 15 can begin after three days of Activity 10 have been completed. 20 Roof con- Activity 20 can be started as soon as Activity 45 can begin after Activity 20 and Activity 30 are done. 45 Floor finish struction Activity 15 is complete. 25 Carpentry Activity 25 can be started as soon as one day of Activity 15 has been done. Activity 50 can start after Activ- ities 20, 30, 35, and 40 are done. 50 Ceiling 3. Activity 55 can start as soon as 55 Finish work Activity 45 is done but there must be three days re- maining after Activities 25, 35, 40 and 50 are done.