Hello, I can't describe how much this video has helped me with studying for my masters in PM. I was so lost while trying to figure out what's in the lectures as there's no explanation. I am really glad I found this video! thanks a lot
@Engineer4Free4 ай бұрын
Glad to hear it! Plenty more PM videos on the channel, or also engineer4free.com/project-management ☺️
@wizardOfRobots6 жыл бұрын
Hey man, I'm a software engineer by profession and I totally needed this for my work. Know that you are being appreciated from halfway across the world. Lots of love from India!
@Engineer4Free6 жыл бұрын
That's awesome, I'm glad to hear it helped, and thanks a lot for the really kind words!!!
@mg7831 Жыл бұрын
Man I'm in Uni studying Civil Engineering with a mid coming up in two days and not alot of time to understand this video greatly helped especially the gant chart the professor never used it your a lifesaver I truly wish you happiness in life. Lots of Love From Jordan
@skanderhaffar69586 жыл бұрын
That moment when you get the PDM structure from a video better than the noted one from your professor's seminar. Here take my like bro! cheers for the tutorial :D
@Engineer4Free6 жыл бұрын
Thanks for this comment bro, cheers!!
@skanderhaffar69586 жыл бұрын
I was watching your video as I was preparing for my PM final today. Yep my professor was mean enough to get us a similar complicated network and yep I totally nailed that shit! Many thanks!
@Engineer4Free6 жыл бұрын
hahaha word, always expect and be prepared for the worst... glad this video helped you crush it!!
@csgoawping96656 жыл бұрын
hahahaha !!!! SO DAMMMMMNNNNNNN TTTTTRRRUUUUEEEEE !!!!!!
@aamirashai40723 жыл бұрын
@@skanderhaffar6958 I'm going to accomplish that feat tomorrow. Wish me luck! :)
@febeangulo48445 жыл бұрын
My professor expects us to know all these just by reading the book. We don't do exercises in class, we don't practice at all. Your videos have helped me a lot! I am currently studying the Masters in Project Management. YOU ARE AWESOMEEEE :) !! Thanks a lot!
@Engineer4Free5 жыл бұрын
Thanks for the awesome comment Febe!!! Glad I can help =)
@alcxy85636 жыл бұрын
pretty easy now to understand actually, took me half the video to realise what was happening, but now it all makes perfect sense! thanks a ton man!
@Engineer4Free6 жыл бұрын
haha yeah these ones are weird, but very likely to show up on exams because of their weirdness. Glad you like it, it's video #22 out of 46, do check out the rest at engineer4free.com/project-management or just the youtube playlist kzfaq.info/sun/PLOAuB8dR35oeyKU0ojIxD8Muf6Mwc8ugW =)
@joshuaniranjan20788 жыл бұрын
I have my engineering project management exam today and this video has helped me finally understand how to compute forward and backward passes with various relationships and lag. Thank you so much!
@Engineer4Free8 жыл бұрын
+Joshua Niranjan That's awesome!!! Thanks for letting me know, I always like to hear success stories :)
@tf1266 Жыл бұрын
Fantastic, because my lecturer has made really difficult lagging problems for both the gantt charts and for the critical path method. This has helped heaps thank. Love your channel.
@pankajsingla95655 жыл бұрын
Thanks for sharing it. I watched to multiple times to understand however it clears my doubt about FS, SS, SF, FF
@Engineer4Free5 жыл бұрын
Awesome glad to hear it!! If you want some more detailed videos on FS, SS, SF, FF then check out videos 16 - 22 here: engineer4free.com/project-management =) =)
@SelamSuk2 жыл бұрын
I really like your teaching approach. And thank you for breaking down this into simpler forms. I found you when I study for a construction and scheduling class.
@tpopejr9 жыл бұрын
Been studying for the Project+ cert. Your videos have been very helpful. They're presented clearly and concisely using simple terms. Your descriptions gave me several 'ah ha' moments. Thanks!
@Engineer4Free9 жыл бұрын
Tom Pope That's awesome to hear! You can find all of the PM videos that I made here: engineer4free.com/project-management Good luck on your certification!
@lylyyy2792 жыл бұрын
Believe it or not, our teacher has written the same question on her pamphlet for us, thank u so much
@alexhamm60965 жыл бұрын
Thank you!!!! My scheduling professor is HORRIBLE lol........ive been lost for a couple weeks and your 12min. vid just answered all my questions...why did I not check youtube sooner lol
@Engineer4Free5 жыл бұрын
Haha, sorry to hear that Alex but glad I can help =)
@elenigk89385 жыл бұрын
You are my savior man! There is a hope to pass the exam now! Thanks a lot
@Engineer4Free5 жыл бұрын
Thanks Eleni, hope the exam goes well!!
@raymondsamman40153 жыл бұрын
Lol. . Engineer4free always do the best
@tabark57923 ай бұрын
7:37 I don't understand the last activity H the relation is SF we should tack the ES of activity F its 3 +2 lag its 5 and for activity G we should tack the ES its 7 +2 lag its 9 so we tack 9 in Forword not 11 and the CPM will become ABDGH
@aamirashai40723 жыл бұрын
My life is complete today... Such a beauty you are.
@Engineer4Free3 жыл бұрын
Thanks Aamir! Check out engineer4free.com/project-management and you're life will be even more complete =)
@aamirashai40723 жыл бұрын
Definitely. I've already subscribed to this channel. Hope to see great content in future too.
@manewyalew24102 жыл бұрын
great. your make for me clarity for that I missed the one class and more than that.
@asirfaysalrafin1424 жыл бұрын
Thanks for the great tutorial! In this diagram, we have 3 paths in total. They are (i) A-B-D-G-H, (ii) A-C-E-G-H, (iii) A-C-F-H If there were no lags, we could just add up all the durations of all activities in a single path to get the critical path (project duration). Now, is there any way to get the critical path by adding up the duration of the activities and ± lag? Kind regards.
@tarashankarsharma33724 жыл бұрын
No, it is not that if there is no lag we simply add all the activities to get critical path and duration of project. We must follow the pattern of network diagram and work accordingly with it to get critical path and total project duration. And type of relationship given to activity must be taken in consideration.
@asirfaysalrafin1424 жыл бұрын
@@tarashankarsharma3372 I see. I tried an AOA network for a different table whlch helped me understand the concept more. Thanks for your reply. Have a great day!
@Engineer4Free4 жыл бұрын
Thanks for all the good questions and answers to both of you 😊
@tarashankarsharma33724 жыл бұрын
kzfaq.info/get/bejne/p8t7frpnkriRhYk.html Can you please subscribe my channel.
@KM-yl9lc3 жыл бұрын
Excellent video, from an excellent channel. Thank you very much!
@Engineer4Free3 жыл бұрын
Thanks Kareem!! =)
@sheilacavino72943 жыл бұрын
thank very much ,now i can solve the network diagram
@Engineer4Free3 жыл бұрын
Mission accomplished! The full playlist can be found at engineer4free.com/project-management if you're interested in checking it out!
@bahran-tutorials88452 жыл бұрын
you are a brilliant teacher
@syedmuhammadalishah43447 ай бұрын
I was searching for this type of example thanks dude
@erickademe Жыл бұрын
Having my Exam next week thank you for saving me
@Feri95 жыл бұрын
this guy worth a million like
@Engineer4Free5 жыл бұрын
Thanks Faran!!!
@reverbnation23894 жыл бұрын
thank you very much.love from sri lanka.
@Engineer4Free4 жыл бұрын
❤️❤️
@malondyshange6576 Жыл бұрын
Very helpful in my school work... Can you please do a video on Line of balance control, please tag me on one if was already uploaded
@blatantlyniv7 жыл бұрын
thanks for uploading this! it made me understand pdm which i have been struggling for days!!
@Engineer4Free7 жыл бұрын
Happy that I was able to help!
@tonyamichael8802 Жыл бұрын
It becomes something else to move from the gantt chart to the activity table. My lecturer just frustrated us with such as you turn to see weird pertchart...
@seanmcdermott81815 жыл бұрын
I'm still struggling with the backwards pass!! We saw one small example in a copy, no actual drawn out example and we have to do a 32 length activity with FS and SS events.
@Engineer4Free5 жыл бұрын
Hey Sean, I recommend taking a step back then. Definitely watch videos 4-9 here: engineer4free.com/project-management and if you have time (like 2 hours or so) then I recommend just watching everything up to the video that we're commenting on (which is video 22). Going through them all will fill you in with bits of insight here and there and will just get you some more practice to get comfortable with the topic. Cheers let me know how your progress goes!
@kishranai62622 жыл бұрын
Hi I not clear on how critical path is determined manually from a network diagram with Lags/Leads. Without lags/Leads we understand the critical path is the longest path in the network diagram and each task/activity on the critical path has its Start of Activity (LS-ES=0) and Finish of Activity (LF-EF=0) in short no slack at all. In addition, we can also add the individual duration of activities in the critical path to get the EF of the project. Now how do we use this same principle on a network diagram with lags/leads to determine the critical path? Lets take your example above - based on this diagram you have three paths (i) A-B-D-G-H, (ii) A-C-E-G-H, (iii) A-C-F-H. Out of these three the only path that have the Start of Activity (LS-ES=0) and Finish of Activity (LF-EF=0) is A-B-D-G-H and if we add the duration of these activities it gives a total of 16 but the EF of the last activity shows 14...so this shows we cannot apply the same approach to determine the critical path as we do when there is no lags/leads. Can you please let me know how the critical path is determined manually taking your example above. Your input much appreciated.
@kishranai6262 Жыл бұрын
Hi I really like to know the answer to my query above. Appreciate if you or anyone can help with my doubt above regarding critical path? Basically, how you determine the critical path from a network diagram which has various types of dependencies and lags? Best Rgds Thanks
@stephenwearen85647 жыл бұрын
Great Videos, very helpful. How would the total and free float be calculated when there is lag and also where the are finish to finish relationships? Thanks
@saharchapuk6887 жыл бұрын
Did you get the answer for your question please, if you did, can you share it. Thank you.
@shreyashsmart92702 жыл бұрын
Thankyou 🙌 from india.
@jaimegarlick63884 жыл бұрын
Thanks for the help! Really appreciate it!
@Engineer4Free4 жыл бұрын
You're welcome!! 🙂
@mohamedhafidi49112 ай бұрын
you are the best, thank you
@tonyamichael8802 Жыл бұрын
Sir, if G depends on D but on the pert diagram G starts before D finishes so it doesn't depend on D.
@delphinengwa44125 жыл бұрын
Thanks very much for the video. It was quite educative.
@Engineer4Free5 жыл бұрын
Hey you're welcome, thanks for watching =)
@ugurkose58254 жыл бұрын
Thank you for sharing with us. I really priciate that
@Engineer4Free4 жыл бұрын
Glad you like it, thanks for watching!!
@alirehman69375 жыл бұрын
Awesome, please upload for LEAD relationship as well
@Engineer4Free5 жыл бұрын
Thanks for the suggestion
@jobellegelido3 жыл бұрын
Is the Gantt chart plotted for activity E correct? It says E can start 3 days after C finishes with a duration of 1. So if C finishes on day 3, E should be be plotted on day 4? Right?
@interiorarttv84493 жыл бұрын
Thank you so much, that was so helpful
@Engineer4Free3 жыл бұрын
Glad to hear it!! The full playlist is here too: engineer4free.com/project-management =)
@dumstzzile5 жыл бұрын
working backward, is there a method of reading the gant chart to get the values or a formula to quickly and with less effort get them values?
@Engineer4Free5 жыл бұрын
You can only read the ES and EF values off the Gantt chart. The numbers that each activity on the Gantt chart start and stop on are the ES and EF values. You could use them to populate the network diagram and skip the forward pass, but you will still need to do the backward pass. I recommend drawing the gantt chart and network diagram, and doing the actual forward pass, and then quickly checking the ES/EF values against the gantt chart to make sure that it looks like you have no errors. That's more valuable to you then using then using the Gantt chart to skip a step.
@dumstzzile5 жыл бұрын
My best by far. I also have an unrealistic problem to deal with
@Engineer4Free5 жыл бұрын
Such is the life. Thanks for watching!!
@dervisorhan27372 жыл бұрын
Excellent Job
@PannegarSachin5 жыл бұрын
You made it look so simple .
@Engineer4Free5 жыл бұрын
Thanks, hope you found it helpful
@dheeraj63643 жыл бұрын
THANKYOU, SO MUCH FOR THIS LECTURE
@Engineer4Free3 жыл бұрын
You're welcome Dheeraj! =)
@farnazansari96974 жыл бұрын
You are a life saver!!! Thanks🧡
@Engineer4Free4 жыл бұрын
Happy to help 🙂🙂
@muhdkhairulamirinum39857 ай бұрын
thank you. it is very clear
@karlxia9459 Жыл бұрын
My teacher is juse mean like this. Thank you for the video.
@ritaindahlestari40658 жыл бұрын
Thank you for the videos on precedence notation diagram! it is very helpful for students like me as it is very clear! But, may I ask what will you do in this situation. There are 2 activities e.g. activity A and B, and they have the same successor, activity M. A have FF relationship with M while B have normal FS relationship with M, but B to M (FS relationship) has a larger value of ES than A to M (FF relationship). Which value will you choose in this case?
@Engineer4Free8 жыл бұрын
+Rita Indah Lestari In that case, the duration of A, B, and M are all significant too. For the A-M relationship, you can first find the EF of M, then subtract the duration to find the ES of M. Then you need to check the B-M relationship. You can first find the ES of M based on E. You would then compare the ES of M given by A and then also as given by B, and chose the larger value. You must chose the larger value in the forward pass because in order to satisfy both predecessors. As you can see, the logic AND the durations of all activities in question would affect the outcome. Hope that helps!
@amirjaved44754 жыл бұрын
Please inform how to calculate FS-2 or say SS-3 in PDM network calculations for CPM
@Engineer4Free4 жыл бұрын
See videos 16-22 here: engineer4free.com/project-management =)
@officialmintt5 жыл бұрын
So clear. Thank you!
@Engineer4Free5 жыл бұрын
You're welcome!!! (=
@ualihanomarov34016 жыл бұрын
Thank you brother, it really helped me to pass my midterm 👍🏻
@Engineer4Free6 жыл бұрын
Glad t hear it! Thanks for watching and commenting :)
@abbaska2967 Жыл бұрын
Nice explanation
@fachrierireza26438 жыл бұрын
Thank you so much. Your explanation was vivid & clear.
@Engineer4Free8 жыл бұрын
+Fachri Eri Reza Thanks for the feedback! You can check out all 45 PM tutorials I made here: www.engineer4free.com/project-management.html :)
@nipunimanage90612 жыл бұрын
You are a life saver. THANK YOU!!!!!
@bagyaranathunga29425 жыл бұрын
Thank you very much.really helpful and great explanation.
@Engineer4Free5 жыл бұрын
You're welcome!!
@sohaib39038 жыл бұрын
Great Video, I got same kind of question in my examination and I nailed it . Thanks (Y)
@Engineer4Free8 жыл бұрын
+Sohaib Iqbal Glad to hear it, that's awesome!!!!
@azmanman34544 жыл бұрын
Hi there, what is the difference between Critical path method and Arrow diagram?
@Engineer4Free4 жыл бұрын
Hi, sorry for any confusion brought about by the naming of each style of diagram. There are two types of network diagrams: Activity on Node (AON) and Activity on Arrow (AOA). In these videos I usually refer to AON as PDM, and AOA as CPM. That's local lingo for me that I originally learned, but you are actually better to use AON and AOA, it's more clear.
@azmanman34544 жыл бұрын
@@Engineer4Free Thanks for the clarification
@anasahmed63052 жыл бұрын
Well explained!
@wissalbenamor85036 жыл бұрын
you, sir, are my savior. thanks!
@Engineer4Free6 жыл бұрын
Glad I can help! :)
@omedkakarash47802 жыл бұрын
Thank you
@mohdfaizankhan57295 жыл бұрын
can there be two critical paths in a network?
@Engineer4Free5 жыл бұрын
Yes. If you find more than one, write them all down.
@FaizanKhan-kl9dr5 жыл бұрын
@@Engineer4Free okay thanks a lot sir :)
@zakiya29258 жыл бұрын
and I did have that type of teacher....thanks for your video, this is very tricky stuff
@Engineer4Free8 жыл бұрын
+Zakiya Mitchell haha glad to hear it's helping! You can check out the rest of my PM tutorials here: www.engineer4free.com/project-management
@Stabey4 жыл бұрын
Your the best mate
@Sam-qd4pv2 жыл бұрын
Thanks
@muhammadjamalmaruf41413 жыл бұрын
Well done Man .. appreciated
@Kohyongkeng2 жыл бұрын
Hi, for this example. is there ways to calculate Total Float and Free Float? Thank you
@lalitnaryan81045 жыл бұрын
great solution.
@Engineer4Free5 жыл бұрын
Thanks Lalit.
@yashpratapsingh6432 жыл бұрын
hello, I'm a masters student and i want to understand the concept of free float in the examples where lag is in picture i would be glad if you can help me out in regard to this. Thank u
@ameurrs2 жыл бұрын
Very Very helpful! Thank you so much:)
@ugurtiryaki83614 жыл бұрын
PERFECT !
@Engineer4Free4 жыл бұрын
Thanks!! 😊
@botaniizzet70666 жыл бұрын
Ohhh thank you so much now i get it have exam tomorrow!
@Engineer4Free6 жыл бұрын
Awesome, hope it went well!!!
@ASHIKCHENGAPPA8 жыл бұрын
I have a scenario wherein an merge activity node has got both FS of 5 days lag and SF of 20 days lags. How to make a network diagram for the same, Please could you post a video on the same.
@prakharkhatri52289 ай бұрын
thanks man
@treashel7188 жыл бұрын
excellent sir. it's. tricky bt totally correct.
@abdoashraf94705 жыл бұрын
Thanks sir
@Engineer4Free5 жыл бұрын
You're welcome Abdo!
@sagittariansrock9 жыл бұрын
I'm confused. Shouldn't the EF= ES + duration - 1? If your activity, say B, starts on day 5 and lasts for two days- the team works on days 5 and 6. So the finish day should be day 6, not day 7. Can you please explain your approach. It was a good brain teaser, by the way. Thanks!
@Engineer4Free9 жыл бұрын
sagittariansrock Hey I see what's confusing you. Take a look at the numbering for the days on the x axis. I have labelled it from 0 to 14. The 0 represents the start of day one. The 1 represents the end of day one, and also the beginning of day two. The 2 represents the end of day two, and also the beginning of day three and so on. Take a look at Activities E and F first for example. We generally assume that people work regular hours, so like 8am-5pm. So first, the 3 on the x axis represents the end of day three (lets say 5pm - the end of the working day) and you can see this is where activity E wraps up (activity E is one day long so it starts at 8am and ends at 5pm on a single day). Activity F starts right on the line for 3 but its not going to start at 5pm and work through the night. Activity F will start at 8am the next morning, so the 3 on the x axis also represents the beginning of day four. I like to only think of the numbers on the axis as the ends of days (when I look at the 3 the first thing that comes to my head is that 3 on the x axis represents the end of day 3). Another way to wrap your head around it is to acknowledge that the columns that form vertically are single days. The space between 2 and 3 on the x axis represents day 3, as seen by how activity E fits only between 2 and 3 and is one day long. To go back to your original question, take a closer look at the Gantt chart. Activity B is actually being performed during days six and seven. Even though it starts on the 5 and ends on the 7, you should now be able to see that that means it starts at the beginning of day six and goes until the end of day 7, which is two days in duration. I hope this helps, let me know if you still have questions because it can be a bit confusing to first wrap your head around the labeling.
@sagittariansrock9 жыл бұрын
Engineer4Free I got it now. It seems that there are two parallel but equally accurate ways to depict this, and I have been using the start on day 1, add duration - 1 system for my exam. Thanks for the very clear explanation :)
@sauravyadav79843 жыл бұрын
Which tool you are using to draw the diagrams?
@Engineer4Free3 жыл бұрын
I've got a list of all the hardware and software here: engineer4free.com/tools =)
@amanbanga65065 жыл бұрын
Life saver❤️
@Engineer4Free5 жыл бұрын
❤️
@mihilaadithya1205 Жыл бұрын
hay man You are a save my life thanks a lot sr 0_0 love you so much keep it up !
@Engineer4Free Жыл бұрын
Glad I could help 🤜🤛
@csgoawping96656 жыл бұрын
Loved it !!!!!
@Engineer4Free6 жыл бұрын
Thanks, glad to hear it! =)
@urwa916 жыл бұрын
Thanks for the video man!
@loikvokhidov76882 жыл бұрын
Will these kind of questions come up in PMP exam?
@zakariyeabdullaahi60762 жыл бұрын
thanks sir
@josephikponmwosa3755 Жыл бұрын
Please can I start writing my Pdm From the left to right??
@AshanPeirisNCVU8 жыл бұрын
awesome video. Thanks man
@venkataramana37189 жыл бұрын
Thank you. Very helpful
@Engineer4Free9 жыл бұрын
Glad to help :)
@tarashankarsharma33724 жыл бұрын
I want to know about how to solve negative lag in forward as well as backward pass, I am stuck in negative lag.
@Engineer4Free4 жыл бұрын
Hmmm, should not be negative, sounds like you have a simple math error somewhere
@nuramajiedamohdnor67775 жыл бұрын
May I know how to calculate the critical path from this mixed network diagram?
@Engineer4Free5 жыл бұрын
Critical path is formed by the sequence of activities that have LS = ES (LF = EF) that go from ES = 0 to EF = max EF. This can be read off the diagram once you have finished the forward and backward pass.
@22cranbrookave8 жыл бұрын
Great video. Helped to solve one question for assignment.:)))
@Engineer4Free8 жыл бұрын
=)
@EdAg086 жыл бұрын
What do you do when you have 2 dependencies on one activity, one has a lag and the other doesn't. Any ideas?
@Engineer4Free6 жыл бұрын
On the forward pass, consider what the ES of the successor would be from each predecessor independently, factoring in lag if applicable and then take the largest ES of the scenarios as actual ES of the successor. For the backward pass, assess the LF of a predecessor for each of it's successors independently, taking any lag into consideration and then take the smallest LF of the scenarios as actual LF of the predecessor. You can find the ES or LF of one activity caused by a related activity whether or not lag is present, so if some relationships have lag and others don't, it won't affect the way that we approach the problem. Does that clear it up?
@EdAg086 жыл бұрын
Thank you for the response.
@andysunny907 жыл бұрын
Great to solve with you.
@Engineer4Free7 жыл бұрын
Glad you liked it :)
@happylunka1660 Жыл бұрын
Please make an example where instead of predecessor activities, you are given successive activities
@ryanhungerford64482 жыл бұрын
Please C A(SS). Seriously though, great videos.
@yaminisachar8948 Жыл бұрын
A-B-D-G-H is the critical path?? And duration = 16 ? can anyone confirm????
@KhetkiRaj6 жыл бұрын
We need more like how to find a Total float, free float, independent float, interfering float.
@Engineer4Free6 жыл бұрын
I've just got a few videos on float, they are videos 13-15 here: engineer4free.com/project-management
@bashayeralm56407 жыл бұрын
Thankyou
@Ff-gs1kt5 жыл бұрын
understandable videos great
@wenghinkoit17833 жыл бұрын
How to draw a AOA network diagram with leads ? urgent
@ekongekpenyong63207 жыл бұрын
Hi, do you also have examples of network diagrams with subsequent tasks having 2 or more of the same predecessors?
@Engineer4Free7 жыл бұрын
Hey Ekong, yeah check out video 15 here engineer4free.com/project-management
@ekongekpenyong63207 жыл бұрын
Great, thanks a lot for the link. Will get busy, cheers.