Network & Gantt chart Project management (lecture)

Why to translate a network to a Gantt chart? Gantt chart is more readily to understood by ‘unskilled’ people. It is especially useful when presenting to the top management. Progress can be easily displayed on it Visualise floats and activity times. Effective explanatory and teaching instrument. Resource allocation can be performed on it.

Two ways af translating networks into bar chart Calculating activity times and loacting these on the bar chart Drawing activities directily to a time-scale, using the node numbers ensuring correct relationships (time-scaled network) – AoA type – AoN type

The time-scaled network (AoA) Mark activities by nodes (events) Any dummy must be drawn in as a vertical line with its head and tail node-labels Activitiy bars will fall from top-left to bottom- right. Dependent activities are always lower in the chart.

The time-scaled network (AoA) a b c d burst merge free float a c b d 8

Dummy activities on a time-scaled AoA network a b c dummy a b c

Time-scaled AoN network (example 1) Re-draw the first AoA project as an AoN network: START FINISH b a d c On AoN networks start and finish activities should be created if thereis no single starting/ending activities.

Translate standard AoN to a time- scaled network FINISH START ac bd

Re-draw the second AoA: Time-scaled AoN network (example 2) START FINISH b a c Translate it to a time-scaled network.

Solution START a c b FINISH

Time-scaled AoN network (individual exercise) START e d c b a FINISH

Solution START FINISH d b a c

Reading Lockyer – Gordon (2005): Chapter 16

Thank you for the attention