Forward & Backward Pass

Presentasi berjudul: "Forward & Backward Pass"— Transcript presentasi:

1 Forward & Backward Pass

2 Forward & Backward Pass
Forward pass – Earliest Times Seberapa awal sebuah aktivitas dapat dimulai? (early start – ES) Seberapa awal sebuah aktivitas dapat diselesaikan? (early finish – EF) Seberapa awal sebuah proyek dapat diselesaikan? (time expected – TE) Backward pass – Latest Times  untuk menghitung float. Seberapa terlambat sebuah aktivitas dapat dimulai? (late start – LS) Seberapa terlambat sebuah aktivitas dapat diselesaikan? (late finish – LF) Berapa lama sebuah aktivitas dapat ditunda? (slack or float – SL) Aktivitas-aktivitas mana yang merepresentasikan jalur kritis/critical path (CP)?

3 Activity-on-Node Network Forward Pass
EF 20 15 200 35 10

4 Activity-on-Node Network Backward Pass
LS 20 185 10 15 5

5 Network Using Lags Legend Lag 5 Lag 10

6 Hammock Activity Example
Legend

7 Exercise: Project Network Diagram (1)
J. Wold, project manager of Print Software, Inc., wants you to: prepare a project network; compute the early, late, and slack activity times; determine the planned project duration; and identify the critical path. His assistant has collected the following information for the Color Printer Drivers Software Project

8 Exercise: Project Network Diagram (2)
Act. ID Description Predecessor Time Unit A External Specifications None 8 B Review Design Features 2 C Document New Features 3 D Write Software 60 E Program and Test F Edit and Publish Notes G Review Manual H Alpha Site E, F 20 I Print Manual 10 J Beta Site H, I K Manufacture 12 L Release and Ship