1. 2. View the full answer. Assume that all activities are interruptible. Step-by-step explanation. The EF is calculated by EF = ES + t (the duration of an activity). This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. . c) Determine ES, EF, LS, LF and slack time for each activity. Construct. critical activities are activities having TS = 0. Final answer. The duration plus the earliest start add up to the earliest finish. Then use the CPM formula to find the LS, which is LF – t. Determining ES and EF dates allows for early allocation of resources to the project. Question: STUDENT EXERCISE Exercise #1 1. Step - 7 : Calculate Total Float. What is Critical Path and project completion time? Present your answer in table format, ie. The big difference for the exam, however, is that the first approach (starting on day 0) involves less calculation because you. Figure 7. The following formula represents total float of an activity. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. After computing the ES, EF, LS, and LF times for all activities, compute the slack or free time for each activity - Slack is the length of time an activity can be delayed without delaying the entire project Slack = LS - ES or Slack = LF - EF. Display the ES, EF, LS, LF, and slack values in a table. Determine the probability that the project will be finished in 70 days or less. The total project completion time and the critical path should also be determined. e) Determine the probability that the project will take longer than 29 days. Please calculate the "expected finish time" and "variance" for each activity. Also, determine (show calculations) the independent float and interfering float for Activity K. (b) Indicate the criticla path. 8 and identify the critical path. Early Start (ES): Earliest date the activity can start. Calculate the available float for each task 5. 4. This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. (b). 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. 1) Construct the project network 2) Show ES, EF, LS, LF, and slack for each activity on the project network chart 3) What are the critical activities? 4) How much time will be needed to complete this project? Show all your work and legend. 3 diagram and determine ES, EF, LS, LF, TF, FF for each of the activities and determine the critical path and activities. Each activity's standard deviation is 20% of its mean (for example. The forward pass helps us determine the earliest possible start and finish times for each activity, while the backward pass helps. Question: Assignment Using the figure below, answer the following: 1. h (a) Construct the network diagram. e) Using the. You can view more details on each measurement unit: L or fL The SI derived unit for volume is the cubic meter. False c. Given that due date of the project is 59 days Therefore, LF of the project (and last activity k) = 59 . 15 Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. c) Determine the ES, EF, LS, LF, and slack time for each activity. Holgura total = LF – EF. 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. Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Math; Advanced Math; Advanced Math questions and answers; Question 1: 1. It looks like this: LF - EF = total float. Each activity's mean is given in the table above. . d g 3 c h 4 f. 10 points Part 1: (See figure 1 - part 1 below). Expert Answer. 4. Here are the activity times: Dave's earliest start (ES) and. Step 5: Calculate the earliest start time (ES), earliest finish time (EF), latest start time (LS), and latest finish time (LF) for each activity or task, using the forward and backward pass methods. 2. With the current estimates, it will take 36 weeks. Duration is in days and all relationships. 2. a) Please see explanation for answer. Explain what it means if an. (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. Transcribed Image Text: Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Explain what it means. This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. b. G 2 Activity ES Duration LS EF FF TELF D H 3 10 A B E к L 1 2 с ES EF LS LF TF FF Activity C D E G I What is the project duration? a) 25 b) 26 c) 27 d) 28 e) None of the above I is a critical activity. Development of a new deluxe version of a particular software product is being considered. b. (b) Indicate the criticla path. 2. 6. 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. Find out critical path by analyzing and showing ES, EF, LS, LF and float in a table. Complete the table above ES, EF, LS, LF, Slack (15 points) 2. Right Click column's header and choose Custom Fields. S = LS – ES = LF – EF. Download Project Plan 365 Buy Now Project Plan 365 Fully-featured free 30-days trials, with tons of support!Compute the ES, EF, LS, LF, total float and free float for each activity. What is the expected completion time for the project? 4. Explain what it means if an activity has a slack of zero. It assumes all activities start and finish ASAP, and their following activities start immediately. To calculate total float, subtract the task’s earliest finish (EF) date from its latest finish (LF) date. (in 2 decimal places) b) The earliest start time ES of activity G =. Dave Fletcher (see Problem 3) was able to determine the activity times for constructing his laser scanning machine. a. The ES is the maximum EF of all predecessors, except for the first task where the ES=0. Holgura de la actividad B = LS – ES = 7 – 5 = 2 dias. Learn how to calculate the mean, median, mode, and range of a data set easily and step by step with our online calculator. Find v (t) for t>= 0. 5. Question: 2. Click on formula button from Custom Attributes. Its LS is the LF of activity H, which is 23. Fill out the table for each day that the project is crashed. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. 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. Badri Construction Company (BCC) is building a luxury lakefront home in the Karaoun Lake region of West Bekaa. A future construction project has the following activity relationships and activity time estimates (in days): - Leave 2-decimal if not exact, do not round up, for example, 4. 2. Entonces para calcular la holgura de las actividades tenemos que sustituir los valores en las ecuaciones: Holgura de la actividad A = LS – ES = 0 – 0 = 0 dias. Free Flow = Most reduced ES of successors – EF; Total Flow and Free Flow. Also answer the questions hereunder:Manpower Leveling: 1. If the first activity's duration is 7 days, then its ES = 0 and EF = ES + Duration = 0 + 7 = 7. To calculate the LF of tasks that aren’t on the critical path, you have to start with the project completion node and work your way backward. 2. The formulas to calculate the ES, EF, LS, LF, and FF are different. Get to know our online critical path method calculator and PERT CPM diagram and solve exercises automatically with a few clicks. 19 everything is the same, except Activity Y can start 4 days after Activity V starts but cannot be finished until 6 days after Activity V is finished. te and V for each activity b. Late Finish (LF): The latest possible date that the task will be able to finish without affecting the overall project completion date. Chương 5 Ch Quản trị dự án. a. B. Also please show the answers clearly. Time requirement. This duration of “4” days is called “FLOAT” or “SLACK”. Its slack. Here is a list of examples solved with our online calculators so that you can learn how they work: Choose the theme. These can actually be calculated with a simple formula. Show ES/EF/LS/ LF values for each activity. Here are the activity times: Dave's earliest start (ES) and earliest finish (EF) are: Please copy and paste data from text area below. 8868. note: If there are more than one LS answer to choose from, pick the lowest number. LF is the lowest LS value among immediate successors, and LS is LF - duration. a) Develop the project network for this problem. On the network (as in the lecture video), show all CPM network values (i. Its ES is the EF of activity A, which is 9. To calculate the LF of tasks that aren’t on the critical path, you have to start with the project completion node and work your way backward. So in this case for activity F, ES = 2+1 = 3 and EF = 3+3-1 = 5. Holgura total = LS – ES. This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. The switch in the circuit has been closed for a long time, and it is opened at t=0. State the non-critical activities. e. There are 2 steps to solve this one. b. But this float is converting into free float. The total project completion time and the critical path should also be determined. Your instructor will provide the answers. Calculate Critical Time and Critical Path. Final answer. The four corners will be calculated, starting with the ES and EF via a forward pass, then the LF and LS via a backward pass. Its LS is the LF of activity H, which is 23. Calculate the ES, EF, LS, LF and slack for each activity and identify the critical path. Statistics. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. State the non-critical activities. 17 Bill Fennema, president of Fennema Hospitality, has developed the tasks, durations, and predecessor relationships in the following table for building new motels. Expert Answer. Also indicate the critical path on the network. 1. Calculate the expected duration of each activity. Linear Programming. Operations Management. For the set of activities shown in the table: a. b) Please see explanation for answer. Question: 4. (d) Determine the critical path(s) and project completion time. Based on PM PrepCast and Formula Study Guide, here are the fomulas: EF = ES + Dur - 1 ES = EF of prev (largest) + 1 LF = LS of succ (smallest) - 1 LS = LF - Dur + 1 Float = LS - ES = LF - EF However, it was mentioned that there are other calculation methods, which where the Start Day is Zero. . The backward pass assigns the last activity’s EF as its latest finish. . The ES of an activity equals the EF of the one before it. ES of all other activites = EF (of previous activity) + 1. Total Float = LS - ES or LF - EF. When calculating the ES (Early Start), EF (Early Finish), LS (Late Start), LF (Late Finish), and slack for each activity, we create a network diagram and perform a forward and backward pass. x = b l o g b x. Perhatikan gambar berikut. Calculate the initial energy stored in the capacitor. Fletcher would like to delermine ES, EF, LS, LF, and stack for each activily. For the project in the table below: a) Draw the network diagram showing ES, EF, LS, LF, and the critical path. Determine the expected time and variance for each activity. Recalculate the expected project completion time. Its LF is 9 + 5 = 14. Depends on. ES (earliest start time): 0. What is the expected completion time for the project? 3. Activities path A 1-2 B 1-3 с 2-4 D 3-4 aij 2 3 3 mij 4 16 7 6 bij 6 17 7 4 8 . Add the task durations for each activity 3. Identify the activities that must be completed to finish the project and their dependencies. Using AOA and AON. Với các công thức tính toán đơn giản, người quản lý dự án có thể thời gian hóa các công việc và dự tính thời gian hoàn thành dự án một cách chính xác và khoa học hơn. (30 Points) a. IPE c. Its ES is the EF of activity A, which is 9. Operations Management questions and answers. Final answer. Backward pass for Late" times (LS;LF): In the LS column, the entry is = cell containing LF cell containing duration. Question: After consulting with Butch Radner. LF and slack for each activity. Then, fill in all calculated activity information onto the blank tabular form provided. For the project below, a) Draw the network diagram showing ES, EF, LS, LF, and the critical path. (a). (c) Determine ES, EF, LS, LF, and slack time for each activity. Calculate the ES, LS, EF, LF and Slack for each activity of the project? 3. Mahmoud Abbas MahmoudWhen we have ES and EF of a particular node we can calculate the Total Float using the formula. Show transcribed image text. Your instructor will provide the answers. See Answer. Total slack is the time a job could be postponed without delaying the project schedule. 25. (b) Calculate the total float and free float for each activity. Chủ đề: cách tính es ef ls lf Cách tính ES, EF, LS, LF là một kỹ thuật quản lý thời gian rất hữu ích trong quá trình xây dựng. Question: A project is described in the following table, find out: 1-ES, EF, LS, LF, and float of all activities. 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. 1. The formula for total float is TF = LF – EF or $TF = LS – ES where LF is the latest finish time, EF is the earliest finish time, LS is the latest start time, and ES is the earliest start time. 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. The total project completion time and the critical path should also be determined. 2 0 2-5-3-5 2. Calculator Use. B) Calculate the normal, least-cost, and crash duration for the. 2) On the diagram, compute the ES, EF, LS, LF, and the. Question: You are to do your own work on this exam. Show transcribed image text. Transcribed image text: Question 2 - 20 points The following network diagram represents a project: E A B a. Chương 5 Ch Quản trị dự án. Also answer the flowing questions completely. The total project completion time and the critical path should also be determined. Based on the following table, calculate the ES, EF, LS, LF and Slack for each activity using an expected completion time of 15 weeks. Compute the scheduling information (ES, EF, LS, LF, and TF), and include the information in the diagram. . LS = 14 - 2 + 1 = 13. It takes into account the task duration, dependencies, and constraints to determine the earliest and latest possible start and finish times for each task. 12) was able to deter- mine the activity times for constructing his laser scanning machine. organize modification team- c. The PERT/CPM chart has also been. g. The total project completion time and the critical path should also be determined. Question: Given the AON network in the Figure, determine the ES, EF, LS, LF, TF, and FF of each activity. Dave's earliest start (ES) and earliest finish (EF. (b) Determine the ES, EF, LS, LF, and slack time for each activity. Here are the activity times: Time Immediate Time Immediate. Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. No. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. 45: Microsoft Excel sheet with WBS after adding columns for ES, EF, LS, LF. P, Q, R, X, Y, and Z. c) Determine the critical path and project completion time. 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. Activity E Activity E has one preceding activity, H. 2. c) Crash the schedule one day at time and show the effect of crashing each activity on the network by crossing out values and writing the new ones immediately above or below it. Analfundo Demiche 1. Find the probability that the project will be completed in 24 and 34 days. Here are the activity times: Activity Time (weeks) Immediate Predecessor(s) Activity Time (weeks) Immediate Predecessor(s) E F C D Dave's earliest start (ES) and earliest finish (EF. Its slack is 0. For the following precedence diagram, perform forward and backward pass calculations and determine the project duration. Calculate the ES, EF, LS, LF, and Slack for each activity. ) Use the following legend for filling out the AON network: ES Total Float EF LS Free Float LF Figure 2 SS 5 FF 4. Complete the ES, EF, LS, LF and slack times for each activity and answer the following question: What is the probability. Question: Activity Immediate predecessor Duration A 6 B A 20 C A 5. The following table describes the relationships among the activities that need to be completed. For the \ nish" node (if there is one) ES is \=max(all EF entries)" This is also the max of all the entries in column G \Finish time" is calculated as the max of entries in the EF column, unless there is a preset nish time. Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. EF = ES + T e LS = LF – T e Where: T e is the expected time for that activity. 8868. Expert Answer. 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. Question: Instructions Using the following information, create a project network diagram. txt and CPM1. Establishing ES and EF dates enables early resource allocation for the project. VD: Tiếp tục với ví dụ trên, khi đó EF của công việc B sẽ bằng ES của B cộng với thời gian thực hiện của B, tức là EF của B là 5 + 3 = 8. Proper Use the following information and the “beginning-of-day” convention, draw AON diagram. 2. F EET ES EFEET LETLS Duration LF LET . Here are the activity times: Dave's earliest start (ES) and earliest finish (EF) are: In the following table the activities with their precedence sequence and expected time (days) are. Morgan R. The values of ES, EF, LS and LF are different in the two approaches. You will find cases on critical path calculation and more. Your instructor will provide the answers. The total project completion time and the critical path should also be determined. A) ANSWER: Activity D ES EF LS LF TS A 2 0 2 4 6 4 B 10 2 12 6 16 4 C 8 2 10 7 15 5 D 15 2 17 8 23 6 E 7 12 19 16 23 4 F 20 10 30 15 35 5 G 12 19 31 23 35 4 H 5 31 36 35 40 4. (3 marks). Click the card to flip 👆. EF=ES+t LS = LF + Slack = LS ⋅ES LF. Question: Develop a logic network for the sequence of activities listed in the table. Identify the critical path for each network Task 1 Activity Precedence Time (days) A. 2 F FFFletcher would like to determine ES, EF, LS, LF, and slack for each activity. Assume a Finish-to-Start (FS) relationship with zero lag/lead time unless. (c) Identify all paths. Its EF is 16 + 3 = 19. Its LS is the LF of activity A, which is 9. 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. 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 50 weeks (MUST SHOW WORK TO GET CREDIT – INCLUDE FORMULAS). Late Start. Kỹ thuật này. Here are the activity times: Davels earliest start (ES) and earliest finish. It is solved using 1 method of CPM. 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. The total project completion time and the critical path should also be determined. All Free PDU Resources. Determine the probability that the project will be finished in 80 days or less. c) LF of activity h as calculated = 38 days. The calculation begins at ES of the first action with 0 and moves forward through the schedule. Step 1. Click on formula button from Custom Attributes. 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. Late Start. Then do the CPM calculations and complete the table. The total project completion time and the critical path should also be determined. Highlight the critical path. Sketch the whole network. Backward pass: This is used to calculate late start (LS) and late finish (LF) dates. Prepare a network diagram. Lag 1 D Build Cabinets Install Cabinets 7 Lag 5 Design 3 Tear Down 3. In addition, identify the critical path and the amount of time needed to complete the project. It utilizes the CPM diagram and the estimated duration of each activity to determine their Earliest Start (ES) and Earliest Finish (EF). Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. LS = 14 - 2 + 1 = 13. For an activity, the total float can become free float if- Verified. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. 2-Activity X is independent of both activities Q and K 3-E must start. (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. a. Expert Answer. Here are the activity times: Immediate Predecessor(s) Immediate Predecessor(s) B Time Activity (weeks) A 6 B 7 с 3 D 2 Time Activity (weeks) E 4 6 G 10 H 7 Inim A A B C. Draw the network diagram based on the information given below. In both cases, use the maximum allowable number of workers. E DF Dave's. Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. #manpropolibatam Tedy dan Tiodora, mahasiswa Prodi Administrasi Bisnis Terapan, Politeknik Negeri Batam mempresentasikan penyelesaian kasus project time mana. 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. LS = LF - thời gian hoàn thành. b) Determine the expected duration, variance and standard deviation for each activity. so the float of activity two is =6 days. F C No 2 8 10 9 11 1 . Mean, Median, Mode and Range Calculator Online. Network 2 Activity Duration IPA Type Rel Lag ES EF LS LF TF FF А 4 B 3 C 8 А SF D 7 A,B E 6 SS 3 D D F 3 D G 5 F SS 2. The total project completion time and the critical path should also be determined. Highlight the critical path. organize layout team b. Right Click column's header and choose Custom Fields. [30 points] An app design project consists of following activities. Show the variance for each activity and compute for the total project variance. This video demonstrates how to construct a PERT/CPM AON (Activity-on-Node) network diagram for a project consisting of 8 activities and how to determine the. See Answer. ) Identify the critical path Assume the first activity starts at day 0. a) Penjelasan ES, LS, EF, LF Pada Diagram Network Metode AoAES - Earliest StartEF - Earliest FinishLS - Latest StartLF - Latest FinishSlack = LS - ESElectrical Engineering questions and answers. Construct a network for this problem. Time (weeks) Predecessors Activity A Activity Time (weeks) Predecessors 5 E 3 B B 4 F 5 B C 2 A G 9 C, E D 1 A H 6 D, F (a) Draw a network with t, ES, EF, LS, and. You must show the critical path. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. d) What is the probability that Kelle Carpet and Trim will finish the project in 40. Here are the activitytimes:Question: Draw the Critical Path Method (CPM) network diagram and highlight the critical path for activities shown in Table 1(a). Coordination of the architect and subcontractors will require. Activity Immediate predecessors Normal time (days) Crash. Here are the activity times Activity Time (weeks)Immediate Predecessor(s Activity Time (weeks) Immediate Predecessor(s) 8 C, E D, F Dave's earliest start (ES) and earliest finish (EF. Question: 2. Problem 3. Hence, latest it can start is. The expected time is the weighted average of the optimistic, most likely, and pessimistic estimates, and the variance is calculated using the formula. Transcribed Image Text: Using the following information, create a project network diagram. For Partially leveled schedule, what is the highest number of manpower are. Assume that every activity is normally distributed. 2 13 h, 1 Use the network diagram to answer the questions below: 1. - Equals LS- ES or LF -EF. Civil Engineering questions and answers. Early Finish. 12) was able to determine the activity times for constructing his laser scanning machine. 5. (See. Late Finish (LF): It is equal to the late start of the activity that follows. Then, fill in all calculated activity information onto the blank tabular form provided.