Refer to Appendix A below (reproduced from the insert). Appendix A: Network for assembling a kit house B 1 H 2 0 A C E F 1 2 3 4 5 0 3 2 1 2 D 2 G 3 Activity Description A Build foundations B Walls unpacked and prepared for assembly C Assemble walls D Roof unpacked and prepared for assembly E Assemble and fit roof F Install plumbing G Install electrics H Install windows and doors

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2019). The mark or mark type is shown in brackets.

1. [0] Examiners note: check diagram for figures, may need for OFR in (ii) and (iii), or may have entered CP on diagram.
2. [1] (a)(i) Critical path = A-C-E-G OR 3+2+1+3
3. [2] (a)(i) 9 (days) (Units not required)
4. [0] Examiners note: check diagram for OFR
5. [1] (a)(ii) Free float is max. time an activity can be delayed without delaying the next activity OR EST next activity – duration – EST
6. [2] (a)(ii) 9-2-5 = 2 (days) (Units not required)
7. [0] Examiners note: check diagram for OFR
8. [1] (a)(iii) Total float is max. time an activity can be delayed without delaying whole project OR LFT - duration - EST (OR LST of next activity – duration – EST)
9. [2] (a)(iii) 9-2-6 = 1 (day) (Units not required)
10. [0] Examiners note: if only comment on methods of meeting quality targets then L1 AN and EVAL maximum
11. [1] Knowledge: CPA and network diagrams and uses
12. [1] Knowledge: Meeting deadlines
13. [1] Knowledge: Planning resources
14. [1] Knowledge: Simultaneous completion of tasks
15. [1] Knowledge: Methods of meeting quality targets
16. [1] Knowledge: Quality control/assurance/TQM
17. [1] Application: QH targets - house built in 9 days – duration 9 days, floats
18. [1] Application: Min is concerned that 12% not completed on time and the defect rate
19. [1] Application: Reference to activities and durations/critical/non-critical activities
20. [1] Application: On site supervisor checks each task – form of quality control
21. [1] Analysis: CPA indicates that houses should be complete within 9 day guarantee, allows simultaneous completion of tasks saving time and resources so making it more likely that this quality target is met
22. [1] Analysis: CPA allows more effective management of resources so that quality target is more likely to be met
23. [1] Analysis: On site supervisor can use CPA to ensure that house building is on schedule and take action if
24. [1] Evaluation: There are quality standards but these are not well explained nor specific. No explicit reference in the CPA. How much time does quality assurance take? Is it included in the timings?
25. [1] Evaluation: CPA minimum duration is the target so any holdup will mean target not met so is the target too strict? Is 12% reasonable?
26. [1] Evaluation: CPA does not address targets re defects
27. [1] Evaluation: No indication that bonuses are impacted by defect rates
28. [1] Evaluation: May need different quality control/assurance methods not related to CPA, e.g. workers at each stage check quality (profit centres?)
29. [1] Evaluation: Is the information in the CPA (duration of activities) accurate?