UNIVERSITY OF SOUTH AFRICA (UNISA)
Department of Civil & Environmental Engineering and Building Science
⋄
Civil Engineering Management
Assignment 3
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Module Code: CVE1501
Module Name: Civil Engineering Management
Assignment No.: Assignment 3
Due Date: 2026
Submitted in partial fulfilment of the requirements for Civil Engineering Management
at the University of South Africa.
, UNISA | CVE1501 Civil Engineering Management — Assignment 3
Q. 2.4
Question 2.4.1.1
A contractor has been appointed to construct a small warehouse. The project manager re-
quires a schedule to be developed for the project activities.
Using the activity information provided below, calculate and tabulate the Early Start (ES),
Early Finish (EF), Late Start (LS), Late Finish (LF), and Total Float for each activity.
Activity Task Event Duration (Days)
A Site Survey 1–2 3
B Obtain Building Permit 1–3 6
C Ground Levelling 2–4 5
D Material Delivery 3–5 4
E Install Drainage System 4–6 7
F Construct Warehouse Floor 5–6 8
G Build Structural Frame 6–7 6
H Install Cladding 7–8 5
Answer
Step 1: Draw the Network Logic
C (5)
2 4
A (3) E (7)
G (6) H (5)
1 6 7 8
B (6) F (8)
3 5
D (4)
Figure 1: Activity-on-arrow network diagram for the warehouse construction project
Activity-on-arrow network diagram for the warehouse construction project
Step 2: Forward Pass (ES and EF)
Formula
EF = ES + Duration
Activity A ES = 0
Page 1 of 8
Department of Civil & Environmental Engineering and Building Science
⋄
Civil Engineering Management
Assignment 3
⋄
Module Code: CVE1501
Module Name: Civil Engineering Management
Assignment No.: Assignment 3
Due Date: 2026
Submitted in partial fulfilment of the requirements for Civil Engineering Management
at the University of South Africa.
, UNISA | CVE1501 Civil Engineering Management — Assignment 3
Q. 2.4
Question 2.4.1.1
A contractor has been appointed to construct a small warehouse. The project manager re-
quires a schedule to be developed for the project activities.
Using the activity information provided below, calculate and tabulate the Early Start (ES),
Early Finish (EF), Late Start (LS), Late Finish (LF), and Total Float for each activity.
Activity Task Event Duration (Days)
A Site Survey 1–2 3
B Obtain Building Permit 1–3 6
C Ground Levelling 2–4 5
D Material Delivery 3–5 4
E Install Drainage System 4–6 7
F Construct Warehouse Floor 5–6 8
G Build Structural Frame 6–7 6
H Install Cladding 7–8 5
Answer
Step 1: Draw the Network Logic
C (5)
2 4
A (3) E (7)
G (6) H (5)
1 6 7 8
B (6) F (8)
3 5
D (4)
Figure 1: Activity-on-arrow network diagram for the warehouse construction project
Activity-on-arrow network diagram for the warehouse construction project
Step 2: Forward Pass (ES and EF)
Formula
EF = ES + Duration
Activity A ES = 0
Page 1 of 8
