Gantt Charts & Schedules Mike Hoy Utility Engineer, INDOT June 22, 2016

Indiana Design Manual IDM (3) Utility Coordinator #58. Prepare a Gantt chart for all utility relocation work that reflects the start time, finish time and duration for each independent section of the utility facility relocation work. Ensure the chart has information regarding the geographical direction (east to west) the utilities are operating.

When Should We Do Schedules? Schedules now need to be completed at three points in time: Preliminary Stage At/During PFC Meeting, to estimate how long relocations will take….could affect Letting Prior to Work Plan Approved Stage To be sure there is proper summation of utilities’ relocations….could affect contractor start date Construction Stage Based on actual progress made by each relocating utility….could lead to contractor “delay” claim

Types of Schedules INDOT now requires a visual schedule, such as “Gantt Project” Free, public domain software You may use other programs: MS Project Schedule Excel spreadsheet Others acceptable (key is visual) Keep them as simple and practical as possible

Gantt Charts Remember these from college? Various types of schedules Bar Charts (low complexity) CPM (high complexity) Gantt Charts (mid-level complexity)

Gantt Charts Advantages Multiple work elements/tasks Tracks “Start” and “Finish” dates Shows durations Obvious interconnection/relationships Visual  easy to understand/interpret

Utility Schedule So why is INDOT requiring it? To determine IF construction can be DONE: Without conflicts with utilities Simultaneous with relocations To avoid overlaps BETWEEN: Various utilities’ relocation schedules Utilities’ schedules vs. contractor’s To help: Utilities be aware & coordinate amongst selves Identify “under-builds” on aerial electric lines Facilitate preceding activities, even pre-construction (acquire ROW, stake ROW, clear trees, etc.)

Utility Schedule So what inputs are needed? Preconstruction schedules of each utility Relocation schedules of each utility ROW Clear and ROW Staked dates Direction each utility plans to proceed “Target Date” department/contractor wants utilities moved Engineer’s MOT schedule Engineer’s phasing/sequencing of CX Contractor’s overall schedule

Example Gantt Chart

Example Conflict from Gantt Chart

Conclusion Why do a Gantt Chart? Required by IDM , Item #58 Presents all schedule conflicts visually Shared easily w/ PM, utilities & Area Eng. Substantiates the completed “Work Plans” Reinforces the submitted “Utility Spec.” Aids in avoiding costly delays – Citizens of Indiana PAY either way

Any Questions? Thank You