Project 1 - Developing the Schedule for the “Construction of Police Station Building”
1.What would the simplest work break down structure for this project?
2. Construct a project network by deciding on predecessors and successors for each activity.
Equations used
- Early Start (ES): Earliest possible point in time at which a task can start. (Actual duration of the first activity)
- Early Finish (EF): Earliest possible point in time at which a task can finish. (ES + duration)
- Late Start (LS): Latest possible point in time at which a task can start. (LF -Duration)
- Late Finish (LF): Latest possible point in time at which a task can finish. (EF of last activity)
- Total Float = LF-EF or LS-ES
A.No Description Duration Predecessor Successor Relationship (Activity and predecessor) Relationship (Activity and successor) ES EF LS LF Float Initiation Start 0 NA Design Input by PWD FS FS 1 Design Input by PWD 1 Start Relocation of Temple FS FS 0 1 14 15 14 2 Relocation of Temple 14 Design Input by PWD Dislocation of local shop FS FS 1 15 15 29 14 3 Dislocation of local shop 7 Relocation of Temple Access release to Contractor FS FS 15 22 29 36 14 4 Access release to Contractor 1 Dislocation of local shop Civil Works FS FS 22 23 36 37 14 Design 0 5 Civil Works 7 Access release to Contractor MEP Works FS FS 23 30 37 44 14 6 MEP Works 7 Civil Works System and Security Works FS FS 30 37 44 51 14 7 System and Security Works 7 MEP Works External Works,Delivery of Bulk Material FS SS 37 44 51 58 14 8 External Works 7 System and Security Works Delivery of Structural Steel & Enveloping material SS FS 44 51 58 65 14 Procurement Civil 9 Delivery of Bulk Material 21 External Works,System and Security Works Delivery of Structural Steel & Enveloping material SS FS 51 72 65 72 0 10 Delivery of Structural Steel & Enveloping material 30 Delivery of Bulk Material Delivery of finishes & Architectural component FS SS 72 102 72 102 0 11 Delivery of finishes & Architectural component 30 Delivery of Structural Steel & Enveloping material Delivery of Landscaping and external Development Materials FS FS 102 132 102 132 0 12 Delivery of Landscaping and external Development Materials 60 Delivery of finishes & Architectural component Delivery of Electrical Material FS FS 132 192 132 192 0 MEP Items 0 13 Delivery of Electrical Material 45 Delivery of Landscaping and external Development Materials Delivery of DG, Panel , AHU Pump (Long lead),delivery of PHE&fire fighting material FS SS 192 237 192 237 0 14 Delivery of DG, Panel , AHU Pump (Long lead) 60 Delivery of Electrical Material Delivery of CC TV & Access Control Materials SS FS 237 297 237 297 0 15 Delivery of PHE & Fire fighting Material 60 Delivery of Electrical Material Delivery of CC TV & Access Control Materials FS SS 297 357 297 357 0 Others 0 16 Delivery of CC TV & Access Control Materials 60 Delivery of PHE & Fire fighting Material,Delivery of DG, Panel , AHU Pump (Long lead) Delivery of Security System Materials FF FS 357 417 357 417 0 17 Delivery of Security System Materials 60 Delivery of CC TV & Access Control Materials Construction of Foundation / Sub Structure Work FS FF 417 477 417 477 0 Construction Sub structure 18 Construction of Foundation / Sub Structure Work 21 Delivery of Security System Materials Construction of Superstructure Work FS FS 477 498 477 498 0 Super structure 0 19 Construction of Superstructure Work 30 Construction of Foundation / Sub Structure Work Control Room / Server Room FS FS 498 528 498 528 0 20 Control Room / Server Room 14 Construction of Superstructure Work Construction of Structural Steel / Enveloping Works FS FS 528 542 528 542 0 Enveloping Works 0 21 Construction of Structural Steel / Enveloping Works 21 Control Room / Server Room Electrical Work Construction FS FS 542 563 542 563 0 MEP construction works 0 22 Electrical Work Construction 28 Construction of Structural Steel / Enveloping Works PHE Work Construction FS FS 563 591 563 591 0 23 PHE Work Construction 28 Electrical Work Construction Fire Fighting Work Construction FS FS 591 619 591 619 0 24 Fire Fighting Work Construction 28 PHE Work Construction Construction of Block Work & Wet Finishes Works FS FS 619 647 619 647 0 Finishes 0 25 Construction of Block Work & Wet Finishes Works 21 Fire Fighting Work Construction Dry Finishes & Parched Finishes Works FS FS 647 668 647 668 0 26 Dry Finishes & Parched Finishes Works 21 Construction of Block Work & Wet Finishes Works External Works i/c Sanitary, Boundary wall, Gate & Landscape FS FS 668 689 668 689 0 27 External Works i/c Sanitary, Boundary wall, Gate & Landscape 21 Dry Finishes & Parched Finishes Works Equipment Installation ( DG, AHU, Panel, Pump etc) FS FS 689 710 689 710 0 28 Equipment Installation ( DG, AHU, Panel, Pump etc) 21 External Works i/c Sanitary, Boundary wall, Gate & Landscape CC TV & Access Control Work FS FS 710 731 710 731 0 29 CC TV & Access Control Work 14 Equipment Installation ( DG, AHU, Panel, Pump etc) Security System Works FS FS 731 745 731 745 0 30 Security System Works 14 CC TV & Access Control Work Pre- Commissioning & Commissioning FS FS 745 759 745 759 0 Testing and commissioning 0 31 Pre- Commissioning & Commissioning 7 Security System Works Integration FS FS 759 766 759 766 0 32 Integration 5 Pre- Commissioning & Commissioning Performance Test FS FS 766 771 766 771 0 33 Performance Test 4 Integration Handover FS FS 771 775 771 775 0 Closure 0 34 Handover 1 Performance Test Finish FS FS 775 776 775 776 0 Finish 0 Handover FS FS 776 776 776 776 0
3.Identify constraints, dependencies and milestones.
Constraints are the limitations or restrictions for a perticular activity
- Project constraints
- Logic
- Limited Workspace
- Technological constraints
- Resource constraints
- Physical constraints
- Project delivery
Scheduling constraints are
- Time constraint
- Time is the essence of contract.
- Resources constraints
- Limited resources
The physical constraints are as follows
The land identified was at the heart of city with some slum dwellers and road side temporary shops.
There was a temple too suppose to come in the vicinity of the new Police station building.
The logistics too were tough to arrange as there was only two approaches to the land, one through the main market road and other one via the subsidiary road which crosses the municipal school and an open space allocated for weekly vegetable market(on Sunday).
there were chances of opposition from local shopkeepers for working in peak trading and business hours as this might disrupt their routine of works.
Following are the technical specifications
The police station is supposed to be structure having one floor (ground) and block masonry with external plaster and paint.
The police station along with administrative office needs to be equipped with Police control room and conference halls with controlled access along with 3 lock up cells. The complete building has to be air conditioned using ducted split units and needs to have electrical panels and DG backup. The fire safety and plumbing & sanitary works too needs to be there as per the requirement. The complete building needs to be IT enabled with Access control and CCTV provisions with one monitoring Room. A 6 meter peripheral boundary wall with security gates separates the market place from the Police station.
Dependencies include the relationship or connection between the activities The four types of dependencies are
Finish to start
Finish to finish
Start to start and start to finish
Here the most commonly used dependency is finish to start means activity B or the successor activity will start only after finishing the predecessor activity. And other dependencies are as mentioned in the above table.
Milestones describe the project's essential steps or phases if the tasks were removed from the timetable.
Milestone activities are as follows
- Start of the project
- Initiation
- design
- Procurement
- Construction
- Testing and commissioning
- Closure or finish of the project.
4.Ensure that every activity has to have a predecessor and successor except the start and end of project.
| A.No | Description | Duration | Predecessor | Successor |
| Initiation | ||||
| Start | 0 | NA | Design Input by PWD | |
| 1 | Design Input by PWD | 1 | Start | Relocation of Temple |
| 2 | Relocation of Temple | 14 | Design Input by PWD | Dislocation of local shop |
| 3 | Dislocation of local shop | 7 | Relocation of Temple | Access release to Contractor |
| 4 | Access release to Contractor | 1 | Dislocation of local shop | Civil Works |
| Design | ||||
| 5 | Civil Works | 7 | Access release to Contractor | MEP Works |
| 6 | MEP Works | 7 | Civil Works | System and Security Works |
| 7 | System and Security Works | 7 | MEP Works | External Works,Delivery of Bulk Material |
| 8 | External Works | 7 | System and Security Works | Delivery of Structural Steel & Enveloping material |
| Procurement | ||||
| Civil | ||||
| 9 | Delivery of Bulk Material | 21 | External Works,System and Security Works | Delivery of Structural Steel & Enveloping material |
| 10 | Delivery of Structural Steel & Enveloping material | 30 | Delivery of Bulk Material | Delivery of finishes & Architectural component |
| 11 | Delivery of finishes & Architectural component | 30 | Delivery of Structural Steel & Enveloping material | Delivery of Landscaping and external Development Materials |
| 12 | Delivery of Landscaping and external Development Materials | 60 | Delivery of finishes & Architectural component | Delivery of Electrical Material |
| MEP Items | ||||
| 13 | Delivery of Electrical Material | 45 | Delivery of Landscaping and external Development Materials | Delivery of DG, Panel , AHU Pump (Long lead),delivery of PHE&fire fighting material |
| 14 | Delivery of DG, Panel , AHU Pump (Long lead) | 60 | Delivery of Electrical Material | Delivery of CC TV & Access Control Materials |
| 15 | Delivery of PHE & Fire fighting Material | 60 | Delivery of Electrical Material | Delivery of CC TV & Access Control Materials |
| Others | ||||
| 16 | Delivery of CC TV & Access Control Materials | 60 | Delivery of PHE & Fire fighting Material,Delivery of DG, Panel , AHU Pump (Long lead) | Delivery of Security System Materials |
| 17 | Delivery of Security System Materials | 60 | Delivery of CC TV & Access Control Materials | Construction of Foundation / Sub Structure Work |
| Construction | ||||
| Sub structure | ||||
| 18 | Construction of Foundation / Sub Structure Work | 21 | Delivery of Security System Materials | Construction of Superstructure Work |
| Super structure | ||||
| 19 | Construction of Superstructure Work | 30 | Construction of Foundation / Sub Structure Work | Control Room / Server Room |
| 20 | Control Room / Server Room | 14 | Construction of Superstructure Work | Construction of Structural Steel / Enveloping Works |
| Enveloping Works | ||||
| 21 | Construction of Structural Steel / Enveloping Works | 21 | Control Room / Server Room | Electrical Work Construction |
| MEP construction works | ||||
| 22 | Electrical Work Construction | 28 | Construction of Structural Steel / Enveloping Works | PHE Work Construction |
| 23 | PHE Work Construction | 28 | Electrical Work Construction | Fire Fighting Work Construction |
| 24 | Fire Fighting Work Construction | 28 | PHE Work Construction | Construction of Block Work & Wet Finishes Works |
| Finishes | ||||
| 25 | Construction of Block Work & Wet Finishes Works | 21 | Fire Fighting Work Construction | Dry Finishes & Parched Finishes Works |
| 26 | Dry Finishes & Parched Finishes Works | 21 | Construction of Block Work & Wet Finishes Works | External Works i/c Sanitary, Boundary wall, Gate & Landscape |
| 27 | External Works i/c Sanitary, Boundary wall, Gate & Landscape | 21 | Dry Finishes & Parched Finishes Works | Equipment Installation ( DG, AHU, Panel, Pump etc) |
| 28 | Equipment Installation ( DG, AHU, Panel, Pump etc) | 21 | External Works i/c Sanitary, Boundary wall, Gate & Landscape | CC TV & Access Control Work |
| 29 | CC TV & Access Control Work | 14 | Equipment Installation ( DG, AHU, Panel, Pump etc) | Security System Works |
| 30 | Security System Works | 14 | CC TV & Access Control Work | Pre- Commissioning & Commissioning |
| Testing and commissioning | ||||
| 31 | Pre- Commissioning & Commissioning | 7 | Security System Works | Integration |
| 32 | Integration | 5 | Pre- Commissioning & Commissioning | Performance Test |
| 33 | Performance Test | 4 | Integration | Handover |
| closure | ||||
| 34 | Handover | 1 | Performance Test | Finish |
| Finish | 0 | Handover |
Please find the excel sheet attached.