Planning the Project — Time HNC D Project Management

Planning the Project - Time HNC/D Project Management

First, structure the project n Supply 1 new Train Develop your WBS … Design Train Build Train Test Train Design Vehicles Design Control System Design Bogies Manage interfaces Deliver Train

Activities / tasks Ideally these should : n Be short n Be measurable n Deliver something n Be able to be carried out by one type of resource

Deliverables Outputs for activities / tasks e. g. Preliminary drawings Working drawings Bill of quantities Shell of house

Milestones are key points for the project. They have no duration – they are just target dates. COMPLETE 14/10/2008 e. g Obtain planning approval Roof on Wiring complete Piping complete

Dependencies Are there any restrictions on activities and tasks? ¡ ¡ ¡ The tea can only be made when the water has boiled The wall can only be painted after it has been prepared and the paint has been purchased The meal is not ready until all the different bits are cooked Two different representations: n. Activity on arrow n. Activity on node

Activity on arrow … n n Activity B depends on activity A if B can only start when A is complete. Dependencies are analysed on a network diagram, e. g. Interviews 8 days 2. Other systems 4 days 3. Packages 8 days 4. Hardware 5 days 5. Requirements 3 days 6. Produce report 5 days Colour code indicates parallelism Investigate Other systems 4 Hardware 5 start Interviews 8 Requirements 3 Packages 8 1. Produce Report 5 end

Activity on Node / Precedence ES Duration Description of Activity LS Total Float Activity ES EF LF Duration EF Description of Activity Link LS Total Float Activity LF

Features of Critical Path Analysis n n Forward Pass (ES, EF) Backward Pass (LS, LF) Float Critical path ( LS–ES=0 or negative) ¡ Convention : critical path shown in red

A Network diagram … 5 15 A 3 A 1 15 10 A 4 A 6 10 A 2 10 A 5

Network parameters n n The critical path covers activities that cannot be delayed without causing the overall project to overrun. Float is the latitude in the duration of activities that are not on the critical path without delaying the project. ¡ The time by which the activity can be lengthened without affecting n n the overall completion time is the Total float. the earliest start time of the succeeding activities is the Free Float.

Alternative Relationships … (5) Design F-S (Lag) • S-S (Lag) Code Design • F-F (Lag) • S-F (Lag) Code (4) (15) (40) Design Code

Time Taken … n Elapsed Time or Effort?

How to represent time plans n n Gantt charts Network diagrams Reports Task lists