Which pair represents two common CPM network diagram types used in construction scheduling?

Which pair represents two common CPM network diagram types used in construction scheduling?

• A. Arrow Diagramming Method (ADM) and Critical Path Method (CPM)
• B. Arrow Diagramming Method (ADM) and Precedence Diagramming Method (PDM)
• C. Precedence Diagramming Method (PDM) and Activity-on-Node (AON)
• D. Arrow Diagramming Method (ADM) and activity-on-arrow (AOA)

Answer: (B)

This question tests recognizing the two common CPM network diagram styles used in construction scheduling. The Arrow Diagramming Method shows activities as arrows and events as points, with durations attached to the arrows and the network flowing from one event to another. The Precedence Diagramming Method is the modern standard, representing activities as nodes (boxes) and using directed connections to show dependencies, including finish-to-start, start-to-start, finish-to-finish, and start-to-finish relationships. Together they form the two widely used CPM diagram families in practice. Other pairings mix a diagram style with the scheduling method or pair closely related concepts, whereas ADM and PDM are the best-known, distinct diagram types used for CPM in construction.

This question tests recognizing the two common CPM network diagram styles used in construction scheduling. The Arrow Diagramming Method shows activities as arrows and events as points, with durations attached to the arrows and the network flowing from one event to another. The Precedence Diagramming Method is the modern standard, representing activities as nodes (boxes) and using directed connections to show dependencies, including finish-to-start, start-to-start, finish-to-finish, and start-to-finish relationships. Together they form the two widely used CPM diagram families in practice. Other pairings mix a diagram style with the scheduling method or pair closely related concepts, whereas ADM and PDM are the best-known, distinct diagram types used for CPM in construction.