D1 June 2016 Q7

Notes

a1B1: Any two values correct (it must be clear which value corresponds to which letter)

a2B1: Any three values correct

a3B1: All four values correct

Notes

b1M1: At least 10 activities including 6 floats. A scheduling diagram scores M0

b1A1: Critical activities dealt with correctly and five other non-critical activities dealt with correctly

b2M1: Exactly 14 activities (just once) including all 10 floats (on the correct non-critical activities) – this mark is not dependent on the previous A mark

b2A1: CAO

Notes

c1M1: A statement with the correct number of workers (5) and the correct activities (H, D, G, I and J) with any mention of time (need not be correct)

c1A1: A correct, complete statement with details of both time (\(12 \lt \text{time} \lt 13\)) and activities. Allow ‘on day 13’ or ‘during day 13’ as equivalent to this time interval but not ‘at day 13’ – note strict inequality for the time, for example, at time 12 is A0. Accept the time interval ‘\(12 \lt \text{time} \lt 13\)’ for this mark or a time that implies a time strictly between \(t = 12\) and \(t = 13\)

Notes

d1M1: Not a cascade chart. At most 4 workers used and at least 12 activities placed. The completion time must be no greater than 36

d1A1: 3 workers. All 14 activities present (just once). Condone two errors either precedence or activity duration. The completion time must be no greater than 36 – see table below for IPA and duration for each activity. One activity can give rise to at most two errors; one on duration and one on IPA

d2A1: 3 workers. All 14 activities present (just once). No errors. The completion time must be 36