 लव्ट्स लुक at how we schedule projects using critical path method. A critical path analysis कि अंदर a critical path अच्टिकल पात is the longest path through the network. उचो यो के प्रजक जिस्छ पर क्मपम्ट हो सकता है. यह से चवोटर टाँम कपशी हो सकता है पे नहीं हो सकता है, तोईमबि दिले ग़ क्रितिकल पात के उफ़, अदिलग दिलय में है एककिल पात अक्तिबतिस के कुई चलत्ताम नहीं होता seeing the time in the project, the time in the project is not a slack time, meaning slack time is basically the active time and the latest by what time this activity can start without delaying the project time. तो उस बेसिज के अपड जो दिफरन्स है वो दे स्लाक ताएं अगर स्लाक ताएं न आवत इसको मतलब है कि हम प्ले नी कर सकते है इस अक्टिविटी केंदर अगर हमने ताएं रडॉस करना है तो हमें कुछ रिसूर्सिज लिगागर इस क्रितिकल पात केंदर किसी अक्टिविटी का ताएं रडॉस करना पडेगा अगर स्लच बाद लेगे, ने जो गर सी अक्टिविटी टेफ शप्टी ज़ा, थो लेगी गा जो वहो, यो जोंगो कर C is construct collection stack that will take 2 weeks time, D for concrete and install frame 4 weeks ka time lagega isme, E is build high temperature burner again 4 weeks ka time lagega isme F is install pollution control system which will take 3 weeks time, G is install air pollution device it will take 5 weeks time and last activity is H which is inspect and test it will take 2 weeks time total activities ka agar hum time dekhain to 25 weeks hoga but this 25 weeks is not the time project completion hoga because it has many activities which can be performed simultaneously so what time it will take to find it then we have to do critical path analysis critical path as I said it is the longest path through the network and to find critical path we have to find 2 kinds of starting and ending times which we call earliest start and earliest finish and second is latest start and latest finish and their difference is basically if it is zero then it is the activity of critical path so earliest start is the earliest time at which an activity can start earliest possible time when activity can start because the predecessors of the activity should be completed after that it can start so what time it is when this activity can start earliest finish is earliest time at which an activity can be finished so it is basically that earliest start plus activity time will be earliest finish time then we have latest start time latest by which time we should start this activity so that project is not delayed or latest finish is the latest time by which an activity has to be finished again so that the project is not delayed symbol which we are using which I have constructed basically precedence diagram there is a symbol in it we have kept some places in it for example this is the symbol which has name of the activity it could be the actual name or some code A B C this is activity time duration of this activity then we have the earliest start time and earliest finish time these are two places here earliest start and earliest finish will be added and then lower two places are latest start and latest finish we have to enter it