上克通大From the WBS to the Dependency Graph SHANGHAI JIAO TONG UNIVERSITY The work breakdown structure does not show any temporal dependence among the activities/tasks Can we excavate before getting the permit? How much time does the whole project need if I know the individual times? What can be done in parallel? Are there any critical actitivites,that can slow down the project significantly? Temporal dependencies are shown in the dependency graph ·Nodes are activities Lines represent temporal dependencies Software Engineering
Software Engineering From the WBS to the Dependency Graph The work breakdown structure does not show any temporal dependence among the activities/tasks • Can we excavate before getting the permit? • How much time does the whole project need if I know the individual times? • What can be done in parallel? • Are there any critical actitivites, that can slow down the project significantly? Temporal dependencies are shown in the dependency graph • Nodes are activities • Lines represent temporal dependencies
上游充通大￥ Building a House(Dependency Graph) SHANGHAI JIAO TONG UNIVERSITY Install Install Install The activity Interior Interior Wallboard Plumbing Electrical ,Buy Material“must Paint Precede the activity Interior Lay foundation“ Install Interior Install Doors Flooring Lay START Survey Excava Build Buy Founda Outside FINISH ing tion Material tion Wall Install Roofing Install Exterior Doors Request Paint Exterior Install Install Install Exterior Exterior Exterior Plumbing Electrical Siding Software Engineering
Software Engineering Building a House (Dependency Graph) START Request Survey ing Excava tion Buy Material Founda tion Build Outside Wall Install Exterior Plumbing Install Interior Plumbing Install Exterior Electrical Install Interior Electrical Install Exterior Siding Install Wallboard Paint Exterior Install Roofing Install Flooring Paint Interior Install Interior Doors Install Exterior Doors FINISH The activity „Buy Material“ must Precede the activity „Lay foundation“ Lay
上游充通大粤 SHANGHAI JIAO TONG UNIVERSITY Building a House(PERT Chart) 12/3/94 12/21/94 1/11/95 Each Activity has a start time and Install Install Install Interior Interior Wallboard an estimated duration Plumbing Electrical 0 0 0 1/22/95 12 15 9 Paint Interior 2/8/95 11 1/22/95 Install Interior Install Doors Flooring 0 10/15/94 8/27/94 8/27/949/17/9410/1/94 11/5/94 0 2/16/95 Excava Buy Lay Build START Survey 18 Founda Outside 1/19/95 FINISH ing tion Material 544 tion Wall Install 0 0 12 0 0 Roofing 1/19/95 0 3 10 10 15 20 12 Install 9 Exterior 8/27/94 Doors 15 Request 1/12/95 6 Permits Paint 0 Exterior 15 12 5 12/3/94 12/17/94 12/31/94 Start Time Install Install Install 8/2994 Exterior Exterior Exterior Legend Plumbing Electrical Siding Duration 0 12 12 12 Slack Time 10 10 8 Software Engineering
Software Engineering Building a House (PERT Chart) Duration Start Time Slack Time Each Activity has a start time and an estimated duration START 8/27/94 0 0 Request Permits 8/27/94 15 0 Survey ing 8/27/94 3 12 Excava tion 9/17/94 10 0 Legend 8/29/94 0 Buy Material 10/1/94 10 0 Lay Founda tion 10/15/94 15 0 Build Outside Wall 11/5/94 20 0 Install Exterior Plumbing 12/3/94 10 12 Install Interior Plumbing 12/3/94 12 0 Install Exterior Electrical 12/17/94 10 12 Install Interior Electrical 12/21/94 15 0 Install Exterior Siding 12/31/94 8 12 Install Wallboard 1/11/95 9 0 Paint Exterior 1/12/95 5 12 Install Roofing 1/19/95 9 12 Install Flooring 1/22/95 18 0 Paint Interior 1/22/95 11 0 Install Interior Doors 2/8/95 7 0 Install Exterior Doors 1/19/95 6 15 FINISH 2/16/95 0 0 0
h 上游充通大学 SHANGHAI JIAO TONG UNIVERSITY Storage subsystem 目 Duration November December Task Name 7101316192225281471013161922252831厘 1 Storage subsystem requirements elic 5d 2 Storage subsystem design 5d 3 Storage subsystem implementation 15d 4 Storage subsystem inspection 2d 5 Storage subsystem test plan 10d 6 Storage subsystem test 5d 7 8 9 Storage subsystem test plan 5 10d Nov 27 Dec 10 Storage subsystem Storage subsystem system analysis obiect design 5d 2 5d Nov 13 Nov 19 Nov 20 Nov 26 Storage subsystem implementation 15d Noy 27 Dec 17 Software Engineering
Software Engineering Storage subsystem system analysis 1 Nov 13 5d Nov 19 Storage subsystem object design 2 Nov 20 5d Nov 26 Storage subsystem test plan 5 Nov 27 10d Dec 10 Storage subsystem implementation 3 Nov 27 15d Dec 17
上游充通大学 Model of a Project from a project manager's 品 SHANGHAI JIAO TONG UNIVERSITY point of view. Equipment Project Facility Resource Fund Work Organi- Breakdown des- zation Work Schedule Structure cribes Packagel 出 con- sumes produces Outcome respon Organizational Work sible Unit \depends for/ plays A Role Set of Work Work Products Product Activity Task Participant Staff A Internal Project Work Product Deliverable Project Function Department Team Software Engineering
Software Engineering Model of a Project from a project manager’s point of view. * Resource Participant Fund Equipment Schedule Task * Activity conFacility * Staff Department Team produces Set of Work Work * Products Product * Internal Project Work responsumes Package Role * des- * cribes Deliverable sible for plays Organization Structure * * depends Work Product Project Function Project Outcome Work Organizational Unit Work Breakdown