Principles of Operations Management, 2/E

Principles of Operations Management, 2/E
Chapter 14
Data Base Applications

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DATABASE APPLICATION -
PROJECT SCHEDULING

The Van Voorhis Construction Company is involved with constructing municipal buildings and other structures that are used primarily by city and state municipalities. This requires developing legal documents, drafting feasibility studies, obtaining bond ratings, and so forth. Recently, Jamie Van Voorhis was given a request to submit a proposal for the construction of a municipal building. The first step is to develop legal documents and to perform all necessary steps before the construction contract is signed. This requires approximately 20 separate activities that must be completed. These activities, their immediate predecessors, and time requirements are given in the table shown below. As you can see, optimistic ( a ), most likely ( m ), and pessimistic ( b ) time estimates have been given for all of the activities described in the table. Using these data, determine the total project completion time for this preliminary step, the critical path, and slack time for all activities involved.

Activity	a	m	b	Description	Immediate Predecessor(s)
1	1	4	5	Drafting legal documents	---
2	2	3	4	Preparation of financial statements	---
3	3	4	5	Draft of history	---
4	7	8	9	Draft demand portion of feasibility study	---
5	4	4	5	Review and approval of legal documents	1
6	1	2	4	Review and approval of history	3
7	4	5	6	Review feasibility study	4
8	1	2	4	Draft final financial portion of feasibility study	7
9	3	4	4	Draft facts relevant to the bond transaction	5
10	1	1	2	Review and approval of financial statements	2
11	18	20	26	Firm price received of project	---
12	1	2	3	Review and completion of financial portion of feasibility study	8
13	1	1	2	Draft statement completed	6, 9, 10, 11, 12
14	.10	.14	.16	All materials sent to bond rating services	13
15	.2	.3	.4	Statement printed and distributed to all interested parties	14
16	1	1	2	Presentation to bond rating services	14
17	1	2	3	Bond rating received	16
18	3	5	7	Marketing of bonds	15, 17
19	.1	.1	.2	Purchase contract executed	18
20	.1	.14	.16	Final statement authorized and completed	19
21	2	3	6	Purchase contract	19
22	.1	.1	.2	Bond proceeds available	20
23	.0	.2	.2	Sign construction contract	21, 22

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