GANTT CHARTS & SCHEDULES

Chris Hammond, P.E.Transportation Department Manager, United

Consulting

August 27, 2014

Indiana Design Manual IDM 104-1.03 (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 completed

at 3 points in time: Preliminary Stage:

At/During PFC Meeting, to estimate how long Relocations will take….could affect Letting

Prior to Work Plan Approved StageTo be sure there is proper summation of Utilities’ Relocations….could affect Contractor Start Date

Construction StageBased 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” http://www.ganttproject.biz/ 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: Utilities’ Schedules vs. Contractor’s various Utilities’ Relocation Schedules

To help: Utilities be aware & coordinate amongst

selves Identify “under-builds” on Aerial Electric lines Facilitate preceding activities, even Pre-

construction (acquire R/W, stake R/W, clear Trees,

etc.)

Utility Schedule So what inputs are needed?

Preconstruction schedules of each Utility Relocation schedules of each Utility R/W Clear and R/W Staked Dates Direction each Utility plans to proceed “Target Date” 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 104-1.03, Item #58 Presents all Schedule conflicts visually Shared easily w/ P.M., Utilities, & Area

Eng. Substantiates the completed “Work

Plans” Reinforces the submitted “Utility Spec.” Aids in avoiding costly Delays—

citizens of Indiana PAY either way