CE 434 CONSTRUCTION PLANNING

1. CE 434 CONSTRUCTION PLANNING BY Assoc. Prof. Dr. Ahmet ÖZTAŞ

2. Project Planning • Statement of work • written description of goals, work & time frame of project • Activities require labor, resources & time • Precedence relationship shows sequential relationship of project activities

3. 1 2 3 Simplified Project Network Construct forms Pour concrete

4. Elements Of Project Planning • Define project objective(s) • Identify activities • Establish precedence relationships • Make time estimates • Determine project completion time • Compare project schedule objectives • Determine resource requirements to meet objective

5. Project Control • Two phases • 1. planning • 2. control • Work breakdown structure (WBS) • determine subcomponents, activities & tasks

6. Gantt Chart • Popular tool for project scheduling • Graph with bar for representing the time for each task • Provides visual display of project schedule • Also shows slack for activities • (amount of time activity can be delayed without delaying project) Ch 17 - 7

7. A Gantt Chart Month 0 2 4 6 8 10      Activity Design house and obtain financing Lay foundation Order and receive materials Build house Select paint Select carpet Finish work      1 3 5 7 9 Ch 17 - 8 Month

8. CPM/PERT • Critical Path Method (CPM) • DuPont & Remington-Rand (1956) • deterministic task times • activity-on-node network construction • Project Eval. & Review Technique (PERT) • US Navy, Booz, Allen & Hamilton • multiple task time estimates • activity-on-arrow network construction Ch 17 - 9

9. 1 2 3 The Project Network Network consists of branches & nodes Node Branch Ch 17 - 10

10. Network Construction • In AON, nodes represent activities & arrows show precedence relationships • In AOA, arrows represent activities & nodes are events for points in time • An event is the completion or beginning of an activity • A dummy shows precedence for two activities with same start & end nodes Ch 17 - 11

11. Project Network For A House 3 Dummy Lay foundation 0 Build house Finish work 2 3 1 7 6 1 2 4 3 1 Design house and obtain financing Order and receive materials 1 1 Select paint Select carpet 5 Ch 17 - 12

12. Project Planning Projects typically start with at Statement of Work (SOW) provided by the client. The statement of work is a narrative description of the work required for the project. A Project Charter is often developed. Planning starts with the development of a Work Breakdown Structure (WBS). A WBS is ‘a deliverable-oriented grouping of project elements which organizes and defines the total scope of a project’ (PMBOK, 1996). There are typically three to six levels in WBSs -- program, project, task, subtask, etc. Developing a work breakdown structure is important for scoping a project, i.e., determining the specific tasks that have to be completed, choosing appropriate groupings for these activities, and setting precedence and interdependence (what has to follow what and what can be going on at the same time).

13. www.lewisinstitute.com

14. Creating a Project Charter • Write an Overview of the Project Scope • Determine the Team’s Boundaries for Creating the Deliverables • 3. Define the Customer’s Criteria for Acceptance • 4. Determine the Required Reviews and Approvals • 5. Establish Risk Limits • Select the Project Leader and Team Members • Set Deadlines for Delivery of the Final Deliverables • 8. Set Limits on Staffing & Spending • Create a List of Required Reports • Identify Organizational Constraints & Project Priorities. • Assemble a Project Charter • Martin, P. & Tate, K. 1997. Project Management Memory Jogger. GOAL/QPC.

15. charterform.pdf

16. Office Remodeling Project The following activities must be accomplished to complete an office remodeling project: Activity Estimated Duration (Days) 2 Procure Paint 5 Procure New Carpet 7 Procure New Furniture 1 Remove Old Furniture 1 Remove Old Carpet 1 Scrub Walls 2 Paint Walls 1 Install New Carpet 1 Move in New Furniture

17. Office Remodeling Project - WBS Procure Procure Paint Procure New Carpet Procure New Furniture Prepare Remove Old Furniture Remove Old Carpet Scrub Walls Install Paint Walls Install New Carpet Move in New Furniture

18. Simple Approach for Creating the WBS • Gather Project Team • Provide Team Members with Pad of Sticky-Notes • Team Members Write Down all Tasks They can Think of. • Sticky-Notes Placed and Arranged on Wall

22. Scheduling Problem - CPM Bus Shelter Construction Example Job Name Duration Resources Predecessor(s) 1 2 5 2 Shelter Slab 2 1 1 1 Shelter Walls 3 2 2,4 2 Shelter Roof 4 2 2 3 Roof Beam 5 3 2 Excavation 6 2 3 5 Curb and Gutter 7 1 2 4,6 Shelter Seat 8 1 7 1 Paint 9 1 2 Signwork 2,6

25. Bus Shelter Construction Critical Path Method Results LATE FLOAT CUR ACT DUR RES CRIT NAME EARLY start PATH ST FN ST FN TOT FREE 2 1 2 2 2 4 2 4 0 0 YES Shelter Slab 1 1 4 4 5 0 0 4 Shelter Walls 2 5 YES 8 3 2 2 8 10 8 10 0 0 YES Shelter Roof 2 5 5 8 0 Roof Beam 4 3 8 0 5 YES 3 0 0 2 0 0 Excavation 5 2 2 0 YES 3 2 6 8 4 2 Curb and 6 2 4 1 NO Gutter 8 7 1 2 8 9 8 9 0 0 YES Shelter Seat 9 8 1 1 9 9 0 0 Paint 10 10 YES 5 9 1 2 5 6 9 10 4 4 NO Signwork