Q51220b Consider the project given in Table 1 and construct a network diagram.

Activity Description Predecessor
A Purchase of Land –
B Preparation of building plan –
C Level or clean the land A
D Register and get approval A, B
E Construct the building C
F Paint the building D
Table No. 1 Sequence of Activities for Building Construction Project

Solution:

The activities C and D have a common predecessor A. The network representation shown in Figure 1 (a), (b) violates the rule that no two activities can begin and end at the same events. It appears as if activity B is a predecessor of activity C, which is not the case. To construct the network in a logical order, it is necessary to introduce a dummy activity as shown in Figure 2.

21 8 image 955
Figure No. 1 Network Representing the Error
21 8 image 956
Figure No. 2 Correct Representation of Network using Dummy Activity

ed010d383e1f191bdb025d5985cc03fc?s=120&d=mm&r=g

DistPub Team

Distance Publisher (DistPub.com) provide project writing help from year 2007 and provide writing and editing help to hundreds student every year.