Question

Adjust your analysis to the information in the table without modifying the baseline information. Analyze the project execution time following the PERT Diagram methodology. Establish Critical Path of the project. Set the duration of the work. Complete the table.

Activity	Description of Activity	Predecessor	Duration	Earliest Time	Latest Time
A	Construction Permit	-	3
B	Mobilization	A	2
C	Topography	A	4
D	Wall Type A	B, C	12
E	Wall Type B and C	B,C	45
F	Foundations	B,C	20
G	Electricity	F	6
H	Structure	D,G	22
I	Touch-Ups	H	30
J	Roof	H	10
K	Paint	I	18
L	Trials and Delivery	E,K	3

Answer 1

ACTIVITY	TIME	ES	EF	LS	LF	SLACK	CRITICAL
A	3	0	3	0	3	0	YES
B	2	3	5	5	7	2
C	4	3	7	3	7	0	YES
D	12	7	19	21	33	14
E	45	7	52	58	103	51
F	20	7	27	7	27	0	YES
G	6	27	33	27	33	0	YES
H	22	33	55	33	55	0	YES
I	30	55	85	55	85	0	YES
J	10	55	65	96	106	41
K	18	85	103	85	103	0	YES
L	3	103	106	103	106	0	YES

EARLY START = MAX(EF OF ALL PREDECESSORS); 0 FOR FIRST ACTIVITY

EARLY FINISH = ES + DURATION

LATE FINISH = MIN(LS OF ALL SUCCESSOR ACTIVITIES); MAX EF AS LF FOR LAST ACTIVITY

LATE START = LF - DURATION

SLACK = LF- EF

CRITICAL PATH = LONGEST PATH WITH 0 SLACK:

CRITICAL PATH = A---C---F---G---H---I---K---L

DURATION OF PROJECT = 106

GANTT CHART

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