Definition of a Summary Activity (Hammock): A summary activity, also referred to as a hammock activity, spans multiple detailed tasks and is governed by the earliest start (ES) of the first task and the latest finish (LF) of the last task.

Activities 6001 through 6003 Overview:

6001: Starts after 5001 (Drill and Grout Dam Site).

6003: Ends before 8001 (Rock Fill to elevation 50).

Identifying Predecessor and Successor:

Predecessor: Activity 5001 (Drill and Grout Dam Site).

Successor: Activity 8001 (Rock Fill to elevation 50).

Cross-Verification:

Logical and temporal dependencies confirm that Activity 5001 must precede the hammock, and Activity 8001 must succeed it (Ref: PSP Study Guide, Chapter 2A: Logical Sequencing and Activity Relationships