Find the critical path for the network 4. To determine the ES, EF, LS, LF, and slack for each activity and the total project completion time and critical path, Dave Fletcher should use the Critical Path Method (CPM). Part 1: (See figure 2 – part 1 below). The first day starts at 0. c) Determine the ES, EF, LS, LF, and slack time for each activity. This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Calculate the ES, EF, LS, LF and slack for each activity and identify the critical path. Civil Engineering questions and answers. What is project completion time? (b,c) Results Early Early Late Late Task Start Finish Start Finish Slack A 0 8 0 8 0 B 0 3 7 10 7 C 8 15 8 15 0 D 8 11 10 13 2 E 15 19 15 19 0 F 11 17 13 19 2 Project 19. You will find cases on critical path calculation and more. The total project completion time and the critical path should also be determined. Civil Engineering. Dave Fletcher (see Problem 3) was able to determine the activity times for constructing his laser scanning machine. The first portion of this exam is calculating the ES, EF, LS, LF, and TF of a small project. The total project completion time and the critical path should also be determined. Find v (t) for t>= 0. Do the same for the LS. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. Question: Consider the activity sequences given in the table given below. Late Start (LS): It is equal to the Late Finish minus its duration (t). Join for free. Its ES is the EF of activity H, which is 16. Construct a network for this problem. 19 everything is the same, except Activity Y can start 4 days after Activity V starts. Civil Engineering questions and answers. Activity F. Define Finland a Select two pouble Interview L. This video shows how to draw network diagram and calculate early start (ES), early finish(EF), late start(LS), and late finish(LF) using forward pass and bac. Also please show the answers clearly. 1 Activity Immediate Predecessor(s) Time A -- 12 B A 20 C A 16 D B, Draw the network diagram corresponding to the following informaiton. A project consists of 11 activities, lettered A through K, below. The arrays ES [], EF [],LS [], LF [], and T [] Where ES [i] represents the earliest start time. Question: Given the AON network in the Figure, determine the ES, EF, LS, LF, TF, and FF of each activity. Determine the probability that the project will. Transcribed Image Text: Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Here are the activity times: Immediate Predecessor(s) Time Activity (weeks) A 7 B 8 с 2 D 3 Time Activity (weeks) E 5 F 6 G 9 H 6 Immediate Predecessor(s) B B C, E DF A A Dave's. The Green color represent the Forward Calculation EF = (ES + D) – 1, and the yellow color represent the Backward Calculation LS = (LF – D) + 1. Here are the activity times: Question content area. The total project completion time and the critical path should also be determined. organize modification team- c. ) ES EF LS LF Slack Activity 1-2 1-3 1-4 23 12-5 2-6 3-7 147 5-8 6-8 7-8 Question 3b and 3C The critical path is The. answer the question quickly please. Here are the activity times: Activity/Time (weeks) A:6weeks B:7. 4 C 5 B 1 B SS FF SS FF D 12 с С 4 E 8 D 3 SS FF D 2 2. 12. Determine ES, EF, LS, LF and slack for each activity. Also determine the total project completion time and the critical path (s). Alternately, you can subtract the task’s earliest start (ES) date from its latest start (LS) date, like this: LS - ES = total float. Activity ty (days) Relationship Predecessor ES EF LS LF TF FF A 6 Finish-to. Biết cách dùng PERT để hoạch định, giám sát và kiểm soát các dự án 2. Question: Question 1: Draw the following network using The Activity-On-Node method and determine the activity details ES, EF, LS, LF, TFt and FFt then locate critical path(s) considering the following data: Duration Activity Depends on Relationship & Lag (days) A 8 B 5 с 4 D 10 A SS=4 A FS=2 E 7 B FF=1 B FS=2 F 8 C С FS=2 G 5 С FF=3 H 8 G FS=2. Early Finish Time: Late Start Time: Late Finish Time: The LF time is the minimum LS of all the successors, except for the last task where LF equals EF. The ES for activity F is 21, and the EF for that activity is 26. Operations Management questions and answers. Through clicking on Add New Column from the table in right pane and choose columns of type numbers. False c. It takes into account the task duration, dependencies, and constraints to determine the earliest and latest possible start and finish times for each task. Then, determine the ES, EF, LS, LF, and the Slack times for all of the activities. Uave Fletcher was able to determine the activity times for constructing his laser scanning machine. Question. So in this case for activity F, ES = 2+1 = 3 and EF = 3+3-1 = 5. Here LS = 7 and ES =1, therefore total float of Node A = 7 -. Develop a table showing the activities of the project, the duration of each activity, the ES, EF, LS, LF and slack times. Also, determine (show calculations) the independent float and interfering float for Activity K. TF (Total Float) = Simple formula to calculate total float is our usual formula i. #manpropolibatam Tedy dan Tiodora, mahasiswa Prodi Administrasi Bisnis Terapan, Politeknik Negeri Batam mempresentasikan penyelesaian kasus project time mana. Find the critical path for the network. LF of node A is 11 - 1 = 10 and. A table with partial solution are included. 15 Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Then use the CPM formula to find the LS, which is LF – t. Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. These can actually be calculated with a simple formula. . See solution. Formulas for calculating Total Float and Free Float are as follows: Total Float = LS – ES (it is also calculated by LF – EF)Free Float = Lowest ES of successors – EF. Who are the experts? Experts are tested by Chegg as specialists in their subject area. What is the critical path(s)? Activities A and B start on day 0. The ES for activity E is 18, and the EF for that activity is 21. Its EF is 9 + 5 = 14. A marketing firm is developing a new Web-based media campaign for a client. The PERT/CPM chart has also been. Calculator Use. The total project completion time and the critical path should also be determined. Identify and list the critical path (5 points) - Assume the first. 2. 2. b. C 2 A G 11 C, E. Cong Cong Thai ES EF LS LF TG du trii TGdItrii viec Gian toan ph~n nr do viec truce (tuan) (0,25 d) (0,25 d) (0,25 d) (0,25 d) (0,25 d) (0,25 d) A - 3 0 3 0 3 0 0 B A 8 3 11 3 11 0 0 C A 5 3 8 9 14 6 5 D B 2 11 13 12 14 1 0 E B 4 11 15 17 21. Total slack: LS -ES = LF -EF . CPM Calculations. A small software development project has 9 major activities. Question: Given the project activity information above, draw the project network diagram using the Activity-on-Node (AON) style using the symbols and format from the text and the lecture video. Latest start (LS): LF – task time for this task ; Calculate slack times for each task and for the entire project. This is a simple slack time example that explains this term well. The fotai proje completion time and the critical path should also be determined. Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Walker and James E. d. 2. Calculate the ES, EF, LS, and LF times and the slack for each activity and identify the critical path for the project. Tabulate the TF and FF for all activities d. Time requirement. Assume D=20 weeks. Identify the activities that must be completed to finish the project and their dependencies. Operations Management questions and answers. What is the critical path of this network? There are 2 steps to solve this one. (Every box must be filled in so use O's if needed. 5 f. Mean, Median, Mode and Range Calculator Online. Then draw a time‐scaled network and under it a labor resource. Also answer the flowing questions completely. Question: Suppose in Figure 7. Question Help IE Problem 3. Here is how it is calculated mathematically: S = LS – ES = LF – EF. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity The total project completion time and the critical path should also be determined. It utilizes the CPM diagram and the estimated duration of each activity to determine their Earliest Start (ES) and Earliest Finish (EF). Design I/O 3 7 10 6 9-1 4. Calculate the expected duration of each activity. The reason there are two types of float is because a delayed task is probably not a concern if the next task is able to “absorb” the delay. But this float is converting into free float. Critical Path Method (CPM) is a project schedule modeling technique. Total time available for the activity = LF - ES Total Float (TF) = Total Slack = LF – EF = LS – ES = LF – ES – d Another type of float often used in network analysis is the Free Float, which can be calculated as: Free Float = Es (of succeeding activity) – EF (of activity in question) Tips for calculation of ES,EF during forward pass. Calculate the expected duration and variance of the critical path. Consider the first node, Node A. Es Ef Ls Lf is a project management technique used to calculate the duration of a project. Operations Management questions and answers. 6. For the following simple seven‐activity project, develop a precedence network, calculate all relevant characteristics of each activity (ES, EF, LS, LF, TF), and calculate the project duration. Holgura de la actividad C = LS – ES = 5 – 5 = 0 dias For manual application of the critical path algorithm shown in Table 10-7, it is helpful to draw a square of four entries, representing the ES(i), EF(i), LS(i) and LF (i) as shown in Figure 10-14. Calcuate ES, EF, LS, LF for each activity and answer the following questions. Question: The network below represents a project being analyzed by the critical path method. You should have a shape something like the following figure. Identify the critical path. Here are the activity times: Immediate Predecessor(s) Time Activity (weeks) А. Total float (TF) = LS -ES = LF -EF An activity with zero total float has no spare time and is, therefore, one of the operations that controls project completion time. Earliest Finish time (EF): This is ES + duration of the activity (t) Latest Finish time (LF): This is the minimum Latest Start time (LS) of all successors of an activity. Can the project be completed in 30 weeks? Assume that activity A actually finished at 5 weeks and activity B actually finished at 5 weeks. Backward pass for Late" times (LS;LF): In the LS column, the entry is = cell containing LF cell containing duration. 2. Te and Vp for the project. b) Please see explanation for answer. All Free PDU Resources. Install Leg 2 Inspect Appliances 2 Leg 5 Order Aopliances Legend ES ID EF SL Description SI. Highlight the critical path. Determine ES, EF, LS, LF, and slack time for each activity. Perform CPM calculation using forward pass and backward pass method and complete Table 1(b). Activity Duration (Days) Immediate Predecessor none none none. 15 points] e ti i 2 4 is A G I 7 st (a) Using the method of ES, EF, LS, and LF, determine the project completion time? (b) Find the critical path (s). Free Float = Lowest ES of successors – EF. a. e) Using the. Design DB 15 7 22 2 17-5 5. a) True b) False c) Cannot be determined If I is delayed by 4 days, the project duration will be delayed by 4 days. d) What is the critical path for the project? e) How long do you expect the project to take to complete? We have an Answer from Expert. Step-by-step explanation. Transcribed image text: (12 Points) Given the AON network in Figure 2 (following page) determine the ES, EF, LS, LF, Total Float, and Free Float of each activity. 3. EF = ES + waktu Kegiatan LS = LF – waktu kegiatan. Can the project be completed in 30 weeks? Answer The ES (earliest start time), EF (earliest finish time), LS (latest start time) and LF (latest finish time) and the slack which refer to the latest and earliest times for each. Question: Draw the logic node network schedule for the activities listed in the table and complete the excel . Here are the activity times: Dave's earliest start (ES) and earliest finish (EF) are:. Here are the activity times: C, E. For the project below, a) Draw the network diagram showing ES, EF, LS, LF, and the critical path. d) Determine the probability that the project will be completed in 34 days or less. To calculate total float, subtract the task’s earliest finish (EF) date from its latest finish (LF) date. Early Finish (EF): Earliest date that the activity can finish. Determine the probability that the project will be finished in 80 days or less. c. Compute the scheduling information (ES, EF, LS, LF, and TF), and include the information in the diagram. Statistics. S = LS – ES = LF – EF. Chapter 3 or 9 Project Management How to calculate project scheduling duration Expected time ET of completion variance standard deviation, early start ES and. B. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. (in 2 decimal places) c) T; Draw the network and find Project Duration, Critical Path, and the ES, LS, EF, LF, and slack times for each task. Prepare a precedence diagram showing the CPM Calculations and complete the CPM table using the following data. Use the following legend for filling out the AON network: Duration ES LS Activity Total Float Free Float EF LF. D 1 A H 8 D , F. 5. QUESTION 1 Use the network diagram to answer the questions below: 1. LF = LS of Previous node -1 = 18 – 1 = 17; LS = LF – Activity Duration + 1 = 17 – 9 + 1 = 9; Node DFinal answer. (LF = Last Finish Time) Slack Times. First, from the Gantt Chart view you need to add 4 custom columns for (ES, EF, LS, LF). Here are the activity times: egin{tabular}{ccc|ccc} hline multicolumn{2}{l}{ Activity }. The following table describes the relationships among the activities that need to be completed. Since Question 3: Develop a resource constrained schedule for the below. d) What is the probability of the project can be completed in 22 weeks or less?These can actually be calculated with a simple formula. Question: After consulting with Butch Radner. Holgura total = LF – EF. Earliest start time (ES) = max (EF of predecessors) Latest start time (LS) Earliest finish time (EF) Latest finish time (LF) = min (LS of successors) Slack = LS - ES or LF - EF Critical path: activities that have zero slack Development of Version 2. ) Identify the critical path Assume the first activity starts at day 0. Explain what it means if an. 2. This video shows how to draw network diagram and calculate early start (ES), early finish(EF), late start(LS), and late finish(LF) using forward pass and bac. Activity Time (weeks) Predecessors Activity Time (weeks) Predecessors A 5 E 3 B B 4 F 5 B С 2 A G 9 C, E D 1 A H 6 D, F. Chapter 3 or 9 Project Management How to calculate project scheduling duration Expected time ET of completion variance standard deviation, early start ES and. a) Determine ES, EF, LS, LF, and slack for each activity and then determine the total project completion time and the critical path for the project. Determine the expected time and variance for each activity. Cannot. The EF is calculated by EF = ES + t (the duration of an activity). The latest end date for activity C would be the latest start date of H i. Explain what it means if an activity has a slack of zero. There are 2 steps to solve this one. Calculate the ES, EF, LS, LF and slack for each activity and identify the critical path. Compute the values of ES, EF, LS, LF, FF, and TF for the activities. Compute the ES and LS for all activities. Free float: This is the difference between the earliest finish time of a task and the earliest start time of the next task. I will calculate the ES, EF, LS, LF, and Total Slack for each activity based on the given informati. What is the expected completion time for the project? 3. For A, EF is (0+1) = 1 week, and for B, it is (0+2) = 2 weeks. Right Click column's header and choose Custom Fields. Right Click column's header and choose Custom Fields. b) Determine ES, EF, LS, LF, and slack time for each activity. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. The total project completion time and the critical path should also be determined. c) Determine ES, EF, LS, LF and slack time for each activity. (15 points) b. The LF of the last activity is its EF. (Unlabeled relationships are F2S with O lag. ii) Critical path(s). This calculator can help you to do this by producing an estimate of your life expectancy based on national averages. Life Expectancy Calculator. This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Calculate the ES, EF, LS, LF, TF, FF, project duration, and critical path on the network diagram below. Expert-verified. It means Christina has 15 days to finish this task. Start studying Chpt 17 Project Management. Activity Duration ES EF LS LF Slack 1-2 5 0 5 0 5 0 1-3 4 0 4 3 7 3 1-4 3 0 3 2 5 2 2-5 8 5 13 5 13 0 3-8 12. Depends on. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Once you have entered all the tasks, their dependencies, and the estimates, please click below to find the critical path. 2. For the project in the table below: a) Draw the network diagram showing ES, EF, LS, LF, and the critical path. Dave's earliest start (ES) and earliest finish (EF. b) Explain how the ES for Activity 3 is obtained. 2) Highlight or mark the critical path on your network. G E Yes 1 15 16 15 16 0 . Question: Please answer the following: Construct the Project Network for this project. Explanation: Hence, the latest of the earliest completion times of the predecessors is the time at which the earliest start occurs. Activity Total Float Free Float Duration EF LF ES LS. Here are the activily times: Dave's earliest start (ES) and earliest. E DF Dave's. The total project completion time and the critical path should also be determined. Activity Time (weeks) Predecessors Activity Time (weeks) Predecessors A 8 E 6 B B 7 F 8 B с S А G 12 CE D 4 A H 9 DF (a) Draw a network with 1, ES, EF, LS, and. If activity F is delayed by 2 days, will. Question: Problem #4 - AoN Diagram - Simple Activity Relationships ( 20 points) Given the following activity-on-node (AoN) diagram complete the following: a. Through clicking on Add New Column from the table in right pane and choose columns of type numbers. Here are the activity times: Dave's earliest start (ES) and earliest finish. insert into formula popup the right equation, as follows: Unformatted text preview: EF (earliest finish time): 19 LS (latest start time): 16 LF (latest finish time): 23 Slack: 4 Critical Path: Yes Activity F ES (earliest start time): 10 EF (earliest finish time): 30 LS (latest start time): 15 LF (latest finish time): 35 Slack: 5 Critical Path: No Activity G ES (earliest start time): 19 EF (earliest finish time): 31 LS (latest start time): 23 LF. For the activities before that, LF is the smallest of the start times for the next. LF(C) = 11. CPM. (a) Draw a network with t,ES,EF,LS, and LF (b) Comnlete the following tableCalcuate ES, EF, LS, LF for each activity and answer the following questions. For Partially leveled schedule, what is the highest number of manpower are. 3. Slack: 4. Here are the activity times: Dave's earliest start (ES) and. What is the project duration? What are the critical activities? Activity. Use the following legend for filling out the AON network: Duration Activity Total Float ES EF LS Free Float LF SS 6 FS 7 с 10 F K 10 FF 4 SS3 SS 3 SS 3 FF 3 5. Alternately, you can subtract the task’s earliest start (ES) date from its latest start (LS) date, like this: LS - ES = total float. The ES of an activity equals the EF of its predecessor, and the EF is determined by the CPM formula: EF = ES + t (where 't' represents the activity duration). Backward pass for \Late" times (LS;LF): In the LS column, the entry is \= cell containing LF cell containing duration. Christina calculates the slack time of this task like this: Slack Time = 25th October (LST) – 10th October (EST) So, the slack time for collecting ingredients with specific nutrition is 15 days. Given that due date of the project is 59 days Therefore, LF of the project (and last activity k) = 59 . Operations Management questions and answers. Question content area Part 1 Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. The total project completion time and the critical path should also be determined. ES of first activity = 1. 4. Can the project be completed in 30 weeks? Assume that “Systems Analysis”. 3. Determine ES, EF, LS, LF, and slack time for each activity. View the full answer. 6. Here are the activity times: Activity Time (weeks) Immediate Predecessor (s) Activity Time (weeks) Immediate Predecessor (s) A 7 - E 5 B. B) Yes, the project can be completed within 40 weeks. Latest start (LS): LF – task time for this task ; Calculate slack times for each task and for the entire project. Expert-verified. (enter as a probability and round your response to three decimal places). Determine ES. (b) Determine the. Here are the activity times: Dave's earliest start (ES) and earliest. Its ES is the EF of activity A, which is 9. Using a project start time of 0 (May 15) and a required project completion time of 180 days (or November 15), calculate the ES, EF, LS, and LF times and total slack for each activity. (See. The ES of an activity equals the EF of the one before it. Please calculate the "expected finish time" and "variance" for each activity. This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. 2) Highlight or mark the critical path on your network. Nội dung 1. Nội dung 1. Operations Management questions and answers. hence EF of project = EF of activity k = 56 days. Determine the probability that the project will be finished in 70 days or less. Find out the project completion time. It assumes all activities start and finish ASAP, and their following activities start immediately. (10pts) Name of activity A B С NU Activity Time in Days 5 2 D Immediate Predecessors None None A A A E D,F B,C GH E F 5 4 10 G H 8 1 2 Find out the following: a. The total project completion time and the critical path should also be determined. you must include : completed network diagram ( hand drawn or use excel ) Overall duration of project completed table showing ES. B A Yes 2 6 8 6 8 0 . Then show the effect of crashing each activity on the network by crossing out values and writing the new ones immediately above or below it, see example. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. Holgura de la actividad B = LS – ES = 7 – 5 = 2 dias. Then repeat the CPM calculations assuming contiguous activities. Late Finish (LF): The latest possible date that the task will be able to finish without affecting the overall project completion date. (1 mark) "Use the provided diogram to show your answers. The switch in the circuit has been closed for a long time, and it is opened at t=0. Activity Duration (Days) Immediate Predecessor Activities A 2 B 3 с 4 A D 5 A & B E 8 C & D F 3 D G 2. The total project completion time and the critical path should also be determined. We reviewed their content and use your feedback to. Trending now This is a popular solution! Step by step Solved in 3 steps with 4 images. Based on the information given develop a network diagram using Activity on Node (AON) method. All fields marked * are mandatory. Right Click column's header and choose Custom Fields. Click on formula button from Custom Attributes. design personnel jobs d. Highlight the critical path. LS is LF - duration, whereas LF is the lowest LS value from immediate successors. The duration plus the earliest start add up to the earliest finish. I prefer to follow the convention that which you find in Rita's book, to calculate the ES, EF, LS, LF, FF, TF. Task ES EF LS Float A B A B С D A B Time (day) 2 12 6 4 6 B 2 D D C G 3. English. Then, fill in all calculated activity information onto the blank tabular form provided. The formula for calculating free float is Free float = ES (succeeding task) – EF (present task). Total Float = LS – ES or LF – EF. Construct. Early Finish. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. Calculate the ES, EF, LS, LF, TF, FF, project duration, and critical path on the network diagram below. b) Determine the total project completion time and the critical path for the project. Calculate the total duration (days) of the project, its early start, early finish, late start, and late finish times, and the slack for each activity. Transcribed image text: Question 2 - 20 points The following network diagram represents a project: E A B a. Its EF is 16 + 3 = 19. Calculate the ES, EF, LS, and LF times and the slack for each activity in the figure below, and identify the critical path for the project, assuming must be done by 40 weeks (MUST SHOW WORK TO GET CREDIT - INCLUDE FORMULAS). Write the values on the CPM network. Xác định các thông số trong dự án như: ES, EF, LS, LF, thời gian dự trữ cho các công việc và thời gian hoàn thành dự án 3. Each activity's standard deviation is 20% of its mean (for example. (2 marks). The total project completion time and the critical path should also be determined. organize layout team b. How to find the critical path Finding the critical path involves looking at the duration of critical and non-critical tasks. Question: Calculate the ES,EF,LS,LF and Slack time for each node: Activity Precedent Duration ES EFLSLF Slack C, D F, E. (4) Perform a project management analysis for the data given below to determine ES, EF, LS, LF, and slack for each activity, the total project completion time, and the critical path. Can the project be completed in 30 weeks? Assume that task A actually finished at 5 weeks and task B actually finished at 5 weeks. iii) Project. LS = 10 - 4 + 1 = 7. (b). For Assemble Tank, the LF is also 50 and, the LS is 35. e) Determine the probability that the project will take longer than 29 days. Cook would like to determine ES, EF, LS, LF, and slack for each activity. If it has more than one successor, the lowest value is taken. The ES is the maximum EF of all predecessors, except for the first task where the ES=0. Mr.