Scheduling CTC415 Scheduling Putting the activities in chronological

Scheduling CTC-415

Scheduling • Putting the activities in chronological order – Chicken or the egg • Allows the PM to determine the time required to complete a project

Types of Schedules • Depend on Viewer – Simple bar chart (Gantt chart) • Tells owner progress – Activity on Node (AON) – Activity on Arrow (AOA) • Used by PM, supers, foremen

Developing Activity Sequence • Physical Relationship • An activity cannot start until a previous one is complete • Safety Relationship • Performing activities which cause a safety hazard to other activities • Resource Relationship • The amount of resources available at any time • Preferential Relationship • Contractors preference on activity order

Constructing Bar Chart • How should bar chart be laid out – Time on horizontal axis – Activity on vertical axis – Time of activity start based on position – Duration of activity based on length of line • Day = start of day to start of day

Constructing Bar Chart • What time unit should be used – Work days – Hours – Weeks – Bar chart size may dictate time units

Constructing Bar Chart • Additional Info – Activity Value – Activity Cost – Activity Resource requirements

Constructing Bar Chart • Work days or Calendar days – Work days harder to follow • No weekends or holidays – Calendar days allow you to see concrete curing

Gantt Chart • Looks like a horizontal bar chart • Good for linear work • Good for providing an overview of the project • Not good for complex projects

Gantt Chart