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Critical Path Method - (Part - II)
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This lesson throws light on critical path method

Harshit Aggarwal
Cleared UPSC ESE twice with Rank 63 and 90 in mechanical engg. Got 99 percentile in GATE. Cracked ONGC, BHEL,ISRO, SAIL, GAIL successfully

U
Unacademy user
Q3 ) Are not e riksha supposed to get registered?
how to find EFT,LST,LFT ??
1. COURSE : NDUSTR AL ENGINEERING LESSON: CRITICAL PATH METHOD-(PART-11)

2. ABOUT ME Graduated from NIT Nagpur in 2008 Cleared Engineering Services Examination (ESE-UPSC) Exam & Got the offer letter from most of the Maharatna and Navratna Companies * Cleared GATE Exam Rate, Review, Recommend, Share Follow me on Unacademy at: https://unacademy.in/user/harsh.t aggarwal

3. CRITICAL PATH te TE-EST LFT-UST EFT- EST-t

4. SLACK AND FLOAT Both refers to the amount of time by which a particular event or activity can be delayed without affecting the time schedule of project. Floats: I. Total Float:Total float of an activity represents the amount of time by which it can be delayed without delaying the project completion date. It is extra time available or an activity without affecting the completion of project. Tr = LFT-EFT If positive : resources are surplus and can be allocated for other activities If zero : resources arejust sufficient to complete the activity If negative : resources are not sufficient and activity may not complete in time EST EFT LST LFT

5. SLACK AND FLOAT 2. Free Float:lt is that part of the total float which can be used without affecting the float of succeeding activities. Free Float = Total Float-Head Event Slack 3. Independent Float: Independent float time of an activity is the amount of float time which can be used without affecting either the tail or head event. Independent Float= Free float-Tail event slack Total float> Free float > Independent float

6. QUESTION Draw the critical path and draw the table showing all the details activity wise and float. 2 3 2 Tests 1 T- s22 6 Ea1a T-1

7. SOLUTION Earliest Latest Float Activity tEST EFT LST LFT Total Free Independent A, (I-2) 2 02 B,(1-3) C, (1-4) 8 0 8 D, (2-5) 3 2 5 E, (3-5) 6 7 3814 I F (3-6) 10 717 717 0 G, (3-7) 4 7 2 16 5 H, (4-6) 6 8 4 17 3 I, (5-7) 2 13 15 J. (6-8) 5 17 2217 22 0 K, (7-8) 8 15 2 I-3-6-8 8-9--10 Independent Float D (2-5) -8-90 1 (5-7) 0-l10

8. THANK YOU