i, iv c. Using the AOA and AON diagram, (i) identify the critical path, and (ii) calculate the total float, free float, interfering float, and independent float for each. If activity 1 has a duration of 6 days and is. This time depend on what tasks are involved. Float and Free Float is one of the sources to make such adjustments. Interfering float is given by \({F_{INT}} = {F_T} - {F_F}\) = S j Independent float is the time by which starting or finishing of an activity can be delayed without affecting the total float of its proceeding and succeeding activity. 10 Table P10. Float Calculation Event Oriented Here Activities are shown as i-j, where i is tail event & j is head event e. The float the is "shared" with other activities is known as what? Interfering float. Most floaters are small and don't bother vision much. Hence the correct answer. Calculate the lag values for the activities: Lag value=. However, the FM Network can accept no responsibi. Calculate the total, free, and interfering float for the following problem d. Interfering Float (INTF): The amount of time that a schedule activity can be delayed or extended from its early start date without delaying the project finish date, but delaying an. . We would like to show you a description here but the site won’t allow us. Monitoring progress and managing the time model 112. The network in Figure P10. 8. 1 Develop the precedence diagram network for the following project and then calculate the total float, free Hoat, and interfering flout for each activity. 3. Float can “make or break” the project control process, claims, and overall project success. If the Build Process C building gets delayed by 45 days (from ES schedule) and Install Process C Plant gets delayed by 30 days (from ES schedule), the critical path now and duration are ____and___. Simple trigonometry shows. total amount of time that activity "i" starting date or finishing date can be delayed without affecting the overall completion time. Disclaimer: Every effort has gone into ensuring the accuracy of this document. Independent Float: It is the minimum excess available time which exists without affecting any of succeeding or preceding activities. here activity is between 1-2 though starting. Calculate the ES, EF, LS and LF times for all activities. Who are the experts? Experts have been vetted by Chegg as specialists in this subject. which. c - Critical Path. This is the ‘free float’ used for resource levelling on the ‘back pass’. e. Manipulation of float 110. 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. Thus, independent float can be calculated as under: Independent Float = Total. F): The total time between an activity’s late finish and the early start of the following activities. It does not affect start of succeeding activity i. D. Fig. Interfering float. The reason Interfering Float was calculated was so that it was part of the activity record (with punch cards, etc it was very difficult to include data from different record types in a report). interfering float 4. Interesting explanation of the types of schedule float. i, iii b. Free float: The delay can be made without delaying succeeding activities. This ensures that the float behaves. ALL ABOUT CRITICAL PATH METHOD (CPM)MANAGEMENTMANAGEMENT: FAQs- LOUNGI. This is quite commonly used, particularly in association with the free float. Using the AOA diagram, (I) identify the critical path. F IN = F T - F F = S j . Four Types. 6k points) selected Feb 23, 2022 by Ritikgupta . The duration of activities is indicated. B. See Answer See Answer See Answer done loadingThe terms ‘total float’ and ‘free finish time’ are useful terminology for assessing the progress of construction work, the difference of these two terms is: A) duration B) null float C) interfering float D) critical activity duration . - Interfering Float: This is the same value as End Event Slack but calculated as TF - FF. Journal of the Operational Research Society (2003) 54, 1296-1299. Interfering Float ( INTF ) Interfering Float is the amount of time a schedule activity can be delayed or extended from its early start date without delaying the project finish date . This is quite commonly used, particularly in association with the free float. O week B. But with the interfering float, Framing is now delayed and can't start until Day 19. Show the critical paths on the network diagrams. Delaying past the INFT can impact the project's timelines. 시방서의 종류 및 포함되어야 할 주요사항. This is the final answer key and the exam for the same was conducted on 18th August. subsequent. Free Float = Lowest ES of successors – EF. Total Float is. 2) What are the different categories of reporting?The float is an important element in the project schedule that can be used by contractors to change the start of noncritical activities for resource management purposes, and by owners to. Identify all potential critical activities on the bar chart. PDM was eventually extended to calculate Fondahl's link lag concepts for SS, FF, and SF relationship types. Your name: Your Email: Your Comments: 23. subnet of the CPM network that includes all activities to be done first. Calculate the total float, free float, and interfering float for each activity. all of my videos at my Facebook Page:. Develop a (i) bar chart, an activity-on-arrow (AOA) diagram, and an activity-on- node (AON) for the following project. It is computed for an activity by subtracting the tail event slack from its total float. i, ii, iv Soln: Total = 10=Free= Independent; Interfering = 0; 14. It only affects concerned activity. G F 17 H. FS-3 FF-2 B Start А 6 0 SS-1 SS- E Finish SS-2 SF5 с D Given the above network, which of the following best describes Activity E: Activity E has 1 day of interfering float Activity E has 1 day of free float Activity E is on the critical path Activity E has 1 day of total floatAlso compute the free float (FF ), interfering float OF). Also compute the free float (FF). Days = From Question 3 ) ES = ES of Tail or Tail event of Activity 4 ) EF = ES + Duration 5 ) LF = LF of Head or Head Event of Activity 6 ) LS = LF - Duration 7 ) Total Float = LS – ES OR LF – EF 8 ) Interfering Float = Slack of Head Event or Total Float – Free Float 9 ) Free Float = TF - Interfering Float or TF – Slack of Head Event 10 ) Independent Float = FF. Interfering float The amount of time a task can be delayed without pushing a project past its committed deadline is Interfering Float. We would like to show you a description here but the site won’t allow us. 3. Reduce activity times along the critical path we must continually check for any new critical path emerging and redirect the. F. Pick up the correct statement from the following: (A) The duration between the earliest start time of the preceding event and latest finish time of the succeeding event, is called 'float' (B) The duration of time by which an activity can be delayed without affecting the succeeding activity, is called free float (C) The difference between total float and free float, is called interfering. Calculate Early Start, Early Finish, Late Start, and Late Finish12 Total Float, Independent Float & Interfering Float. The time by which a particular activity can be delayed without affecting the preceding and succeeding activities is known as a) Total float b) Free float c) Interfering float d) Independent float. 3 Float Calculation – Summary Following Activities Completed Early Late Preceding Activities Completed Early Free Float (FF) Total Float (TF) Late Independent Float (IndF) Safety Float (SF) 43 • Interfering Float (IF) = Total Float (TF) – Free Float (FF)2. activities in the network. It is the amount of time an activity can be delayed without impacting other activities or the project end date and changes over the course. 7. It is the amount of time an activity can be delayed without impacting other activities or the project end date and changes over the course. Solve the arrow diagram network shown below. This will tell you how much total time the critical tasks can be delayed before the. Free Float. It is also equal to the head event slack of the activity Thus interfering float of an activity - TF - EF = (L-E) of the head event of the activity Subcritical Activity : Activity having next higher float than the critical activity is called the subcriticalThe given relationship "Interfering float = Total float – Free float" is incorrect because interfering float is a separate concept and is not equal to the difference between total float and free float. 4b contains information related to each activity of the sample project. The float calculations for the sample schedule are shown in Exhibit 5. Develop a (i) bar chart and (ii) an activity- on-arrow (AOA) diagram for the following project. -2 wecks C3 weeks A. equation for total float. earliest event time for event j - latest event time for event i - duration of activity. succeeding activities. Interfering Float. In general, float is the amount of time you can wait to start something and not make it 'late'. Total float A contingency is used to cover conditions that reasonably be determined during the design, change orders, and other project risks. J,K D, K E. Rate this question: 8. Thus, an independent float can be calculated as under: Independent Float = Total Float – Tail Event Slack. Passive House. FF=EST Of its following activity—its Erl' (Xiii) Interfering Float It is the difference between the total float and the free float. Free float: The time span by which delay can be made without delaying the succeeding activities. Duration Lag Activity IPA Duration Lag Activity IPA A 4 E B 4 B 9 F B,C 2 С A 6 D G 6 A E 3 D 4 B 2 2 H F,G 3For the network diagram shown, duration of each activity are in weeks. A critical activity is an activity whose delay will delay the project. Float for the fifth path = 31 – 16 = 15 days. Activity float is a measure which calculates the difference between the activity’s earliest start date and the latest start date. Civil Engineering questions and answers. Interfering float; Free float Total flat; Answer :Free float Construction Management MCQ Practice Questions (Civil Eng) Set 2. delaying the entire project but causing delay to the . (40 points) Activity Duration Activities Immediately Following A 22 DJ B 10 C. (b) Calculate the event times (earliest start times and latest start times), andhence find the critical path. closed Feb 24, 2022 by BabulPandey. Complete the network, by adding FF/TF, identify the CP and identify which activities have an interfering float. It affects only preceding activities. fx (or similar) and keep it so that you can always revert to your original. What is the Interfering Float of Activity i-j?Total Float: It is the maximum delay possible for an activity without considering any delay in its precedence or succeeding activity. as that. (b) Free float (c) Independent float (d) Interfering float. Interfering float: It is just another name given to head event slack. Referring to Figure 6. . Free float : The delay can be made without delaying succeeding activities. 3. 2. E 3 H B T 5 5 00 - A 4 с 6 K 8 6 3 5 2 2. Our solutions are written by Chegg experts so you can be assured of the highest quality!Float is the amount of time that a particular work activity can be postponed or delayed before it begins to delay the Project. It is the difference between total float and free float. 10 represents the activities for constructing a culvert. Free float: The time span by which delay can be made without delaying the succeeding activities. On the arrow network diagram below, compute the early and late event times ( TE and TL) for each node and the four floats (the total float, free float, and interfering float) for each activity. Question: 4. البوست ده عن ٤ انواع لل Float بتظهر فى الجداول الزمنية هنتكلم عليهم. The total float and the free float on activity "3-6" in the following project Free Float identifies the window of opportunity during which a task can be rescheduled without causing a ripple effect on subsequent tasks or the project timeline. Highlight the critical path. Disclaimer: Every effort has gone into ensuring the accuracy of this document. In other words, it refers to the amount of free time associated with an activity which can be used before, during or after the performance of this activity. ) (ESc-LFa-Durationb) -the immediate predecessor finished at its late finish and the successor has to start at its early startSolve the arrow diagram network shown below. In project scheduling, the free float (slack) of an activity represents the leeway for scheduling the activity without affecting any subsequent activity. Interfering float O c. The network for this precedence table H(6) F(1) G(1) D(1) C(2) B(1) E(3) A(4) Disclaimer: Every effort has gone into ensuring the accuracy of this document. It does not affect the start of succeeding activity i. Interfering Float: (F IN) Maximum amount by which an activity can be delayed without delaying the project but will cause delay to the Early Start of some following activity. RELATED LINKS. (b) Calculate the event times (earliest start times and latest start times), andhence find the critical path. Basic to CPM is drawing a project network, from which project completion, total floats, and the. This Question Belongs to Civil Engineering >>. If negative, evaluate as "0". This is spare time associated with a particular activity. When all the paths are arranged. In other words,. Using the AOA and AON diagram, (i) identify the critical path, and (ii) calculate the total float, free float, interfering float, and independent float for each. c) Interference float The difference between total float and free float. Interfering float: Interfering float refers to the delay in starting a task rather than a delay in finishing it. 3. Pick up the correct statement from the following: (A) The duration between the earliest start time of the preceding event and latest finish time of the succeeding event, is called 'float' (B) The duration of time by which an activity can be delayed without affecting the succeeding activity, is called free float (C) The difference between total. Independent Float (IndF) The starting point of the forward pass is the _____ activity in the network. There are 2 steps to solve this one. We would like to show you a description here but the site won’t allow us. View Answer. following activity. Total Float (TF) Free Float (FF) Project Duration Critical Path Resource Allocation Resources Relationships Durations Interfering Float (INTF) Independent Float (INDF) TERM DEFINITION Early Start The earliest day on which an activity can start Early Finish The earliest day on which an activity can finish3. Interfering float: It is similar to head event slack. Don’t forget to check out the video. and (ii) calculate the total float, free float, interfering float, and independent float for each activity. Set up the ES, EF, LS, LF, TF, FF, and interfering float (IF) table and indicate the critical path. Draw a logic diagram b. 10. Once the free float has been used (or if it is zero), the interfering float tells us by how much the activity may be delayed without delaying the project end date;The total float of an activity can be classified into free float, independent float, and interfering float. Interfering Float (IF) = Total Float (TF) - Free Float (FF) The critical path pf the project contains all the activities with Total Float (TF) equal to zero (0). The critical path is the path through the network that results in the latest completion date of the project. Independent Float: It is the minimum excess available time which exists without affecting any of succeeding or preceding activities. Interference Float (IntF) or Shared Float (SF) 8. It is thus equal to the head event slack. This is obtained as follows: F I n t = F T − F F = T L j − T E j = S j. I have two hours to get to school. Internal float: built-in float between the planned start and completion dates within the program (time contingency). Once the free float has been used (or if it is zero), the interfering float tells us by how much the activity may be delayed without delaying the project end date - even though it w ill delay. Free float O d. is shared between two or more activities. interfering Float is the maximum amount of time an activity may be delayed without delaying the entire project but causing a delay to the succeeding activities. interfering float e. Earliest occurrence time (T E):(x) (b) Explanation : Interfering float is that part of the total float which causes a reduction in the float of the successor activities. The assignment problem is a special case of transportation problem in which _____. Interfering float 105 Independent float 105 Intermittent float 106 Negative float 107 Terminal float 108 Internal float 108 Contingency 109 Manipulation of float 110 Who owns the float? 111 Monitoring progress and managing the time model 112 Reviewing the assumptions used to produce the schedule 113Political Science. The salvage value at the end of 10 years is Rs. 17 above, suppose that the. See Answer See Answer See Answer done loading 25 . Interfering float The diff between the total float and free float Reducing Project Duration Time Is Money: Cost-Time Tradeoffs – Reducing the time of a critical activity usually incurs additional direct costs. following activity. 1) Δ l = d sin θ. Interfering float – The difference between total float and free float. Floats in Projects are of 4 types: Total Float : Obtained by deducting the Early start and the activity duration from the Late finish of the activity. LK G 15 H. Draw the Node Network for the following data. Edit: a local pilot has actually crashed in the cove in the past (without injuries) and voluntarily gave up their license. e. Critical path is the most important sequence of activities which has no float and which determines the project completion period. In the context of activity-on-arrow (AOA) network representation, textbooks on project management, based on our survey, have for decades been using a popular formula to calculate free floats that. Advertisements. It affects both succeeding and proceeding activities. Who are the experts? Experts are tested by Chegg as specialists in their subject area. It is the difference between total float and free float. Float and contingency 102. Show the critical paths or potential critical paths on the network diagrams. The network of activity involved in a medium engineering project is given below interfering float of the activity lis (in months): olm N ON 10 H Duration is in months A 0 B 1 с 2 D 3 3 ; This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Armed with this new knowledge, we can turn our OldTV into a fully configurable effect. Section-B Answer any five questions. How long is the project duration? Successor(s)/ Relationship B /SF4 Duration(days) Activity C/SS4 10FLOAT/ SLACK TYPES OF FLOATS A float is the time Total Float:- The total time that a schedule activity can be delayed. Free float 3) Independent float 4) interfering float So, I think option (c) is correct. b ) succeeding activities. 7. Interfering float n = late finish n – Smallest early start of succeeding activity This video includes explanation and calculation of interfering float. Solve the arrow diagram network shown below. Your Comments. PlanBee reports the total amount of float in its main grid. Halibut Cove is a very wealthy enclave, and many residents do not understand that it is navigable waters and therefore completely legal to land floatplanes there. c ) portion of interfering float. Powerpoint Pro V2 Presentation Maker. Find Critical Path, Total Float, Free Float and Interfering Float. Activity Name Task Time (hrs) Preceding Activities A Clear Garden 4 B Measure area 1 C Design Patio 2 B D Purchase fencing 1 B E Buy pots and plants 3 A,CInterfering float: It is the difference between total float and free float. The float property does not require the application of any other property on a CSS element for float to function correctly, however, float will work more effectively under specific circumstances. (2 points) Buy plants and paint Repair board fence Paint board fence Cleanup sidewalk 1 2 3 3 2. Highlight the critical path. Total float: It is the time by which starting or finishing of an activity can be delayed without affecting the schedule completion period of a project. (40 points) Oct 13 2022 06:56 AM. (Xii) Free Float The free float of an activity is the amount of time by which the activity can be delayed without interfering with the start of succeed- ing activities. where d is the distance between the slits. Combining this with the interference equations discussed. It is the difference between total float and free float. Compute the free float of activity J. critical float. Interfering float is the difference between Total float and Free float Total float and Independent float Independent float and Free Float None of the aboveTotal Float. 10). Independent float does not affect other activities. Free float= EST(succeeding)- EFT(present) Interfering Float:- Part of total float that causes reduction in the total float of successor activity. i, iii, iv d. It does not affect the latest completion of preceding activity. P. Understanding Work Dates and Calendar Dates In this module, the difference between working dates and calendar dates is explained and how to chart both in a project plan. Terms and Definitions TYPES OF FLOATS Interfering Float (FIT) : Another name for head event slack (Sj), it is the difference between total float and free float FIT= FT–FF = TLj –TEj = Sj Note : if the total float (FT) for any activity is zero then such activity is called critical activity Critical Activity : an activity is said to be. Identify all potential critical activities on the bar chart. INTF is defined as the time span in which the completion of an activity may occur and not delay the termination of. (c) Calculate the total, independent and interfering float times, for each activity. Δl = d sin θ (3. Interfering float refers to the amount of float that affects the project's critical path, while total float represents the total amount of time a task can be delayed without delaying the project. Total Float: On the other hand, Total Float encompasses the total amount of time a task can be delayed without affecting the final project completion date. Float, Free Float, Independent Float and Interfering Float. Total Float: The total amount of time that a schedule activity may be delayed from its early start date without delaying the project finish date, or violating a schedule constraint. It is thus equal to the head event slack. a) Construct an activity network for the preceedance tables. Expert Help. Last updated on Nov 8, 2023 GPSC AE Answer Key released for AE Mechanical (Advt No. 1 Develop the precedence diagram network for the following project and then calculate the total float, free float, and interfering float for each activity. Independent float is that portion of the total float within which an activity can be delayed for start without affecting the float of the preceding activities. How long is the project duration? Successor(s) Duration APTER Act. Expert Answer. identify the activities which can be delayed without affecting the total float of the preceding activity. Interfering Float: (F IN) The maximum amount by which an activity can be delayed without delaying the project but will cause delay to the Early Start of some following activity. An interfering person gets involved in other people's lives in an unwanted and annoying way: 2…. Total float and independent float. (b) Project Crashing Meaning of Project Crashing. TreatmentAns. Negative float, also known as negative slack, is the amount of time beyond aproject's. amount of time an activity can be delayed without . Start calculations with day ten). Exhibit 5. Free float for an activity corresponds to the concept of making available to the activity only that amount of available time that does not interfere with subsequent activities. • The time span in which the completion of an activity may occur and not delay the termination of the project but within which completion will delay the start of some other following activity (non-critical ones). The term Float expresses flexibility that helps in such schedule adjustments. Determine the Interfering Float of Activity i-j. Practical Definition: Slack or Float provide flexibility in the project schedule. Negative (total) float can occur when the forward pass of the network extends beyond the customer's end date. وكمان هنعرف يعنى ايه positive & negative float يلا. T his is quite commonly used, particularly in association with the free float. Paid Online Writing Jobs. Float or slack is the amount of time that a task in a project network can be delayed without causing a delay to subsequent tasks ("free float") and project completion date ("total float"). (1) Construct the AON networks and compute the ES, EF, LS and LF times. A small project, consists of seven activities in the activity-on-node diagram as shown in the figure below. Answer to For the following table, drow AOA and calculate total- Free Float Late (FFL): The amount of scheduling flexibility available on the activity when every operation is scheduled at its latest possible time. An interfering person gets involved in other people's lives in an unwanted and annoying way: 2…. Total Float - (Measured in Day) - Total float is the period by which an activity can shift its timing without affecting the relevant schedule. Pick the wrong relationship: a) Interfering float = Total float – Free float b) Total float = Free float + Independent float c) Total float ≥ Free float ≥ Independent float d) Free float = Total float – Head event slackThe difference between free float and tail event slack is _____ total float; independent float; interference float; slack; View answer. g. Total Float: The total amount of time that a schedule activity may be delayed from its early start date without delaying the project finish date, or violating a schedule constraint. Total Float is the total number of planning units an activity can be delayed without affecting the project completion. Therefore, it is important to understand what is float, when it is negative and more importantly what to do when we have a negative float in a program. 4. none of the above1. An activity with a float value to be zero is called critical because delay in carrying out the activity will affect the project. Question: The network in Figure P10. The independent float affects only. The critical path is the sequence of critical activities. Show the potential critical activities on the bar chart and critical paths for the AOA and AON networks. If the float is positive and the activity is delayed by a period equal to its total float. fx file. Total float and free float. Important Points. Interfering Float: It is similar to head event slack. This float is that portion of activity float which cannot be consumed without adversely affecting the floats of the subsequent activities. UNIT IV MONITORING AND CONTROL 1) What is the purpose of project monitoring and control? Ans: The purpose of project monitoring and control is to ‘keep the team and management up to date on the project’s progress. Interfering float is the difference between _____. To start I have this markup which looks like the left and right stair steps should both st. Any delay in an activity on the critical path. 1st lift 20 Dummy 2nd Fix 2nd lift activity 2-3 allocated arrow diagram bar chart Beam Bill of Quantities bricklayers Brickwork calculated Cast Concrete Slab chapter Check Sheets complete computer print-outs contract contractor cost critical activities critical path Critical Path Method day numbers delay Description of Activity drawing Earliest. Interfering Float (IF): The total time utilized in the current activity that interferes with its following activities; Independent Float (Ind. Show transcribed image text. What is free float? Amount of time a project can be delayed without delaying the early start date of any successor activity. Best answer. Using the same process, we can also calculate the float for other paths. subsequent tasks (“free float”). However, it should be understood that delaying an activity. Interfering Float. Interfering Float - (Measured in Day) - Interfering Float is the amount of time a scheduled activity can be delayed or extended from its early start date without delaying the project. D S В. Question: 0401 437 12. Question: For the arrow network information provided below, without drawing a network diagram, calculate the early start and finish dates, the late start and finish dates, the total float, free float, interfering float, and the independent float. Interfering float is that part of the total float which causes a reduction in the float of the successor activities. (d) Interfering float: Maximum amount by which an activity can be delayed without delaying the project but will cause delay to the early start of some following activity; It is similar to head event slack. 8. Float adalah hal yang harus diperhatikan saat membuat penjadwalan proyek konstruksi, karena kalau seorang manajer proyek kehilangan angka float, maka akan berakibat fatal yakni bertambahnya durasi. Independent float: It is the minimum excess available time that exists without affecting any of the succeeding or preceding activities. 1 3. -2 weeks C. It affects only preceding activity. On the arrow network diagram below, compute the early and late event times ( TE and TL) for each node and the four floats (the total float, free float, and interfering float) for each activity. Who owns the float? 111. Costs Involved in Project Crashing: Direct, Indirect, Penalty and Total Costs. Thus, if an arrow notation activity A ij of duration d ij is considered joining nodes i and j and T ( E , ij ) and T ( L , ij ) are earliest and latest start node time. Calculate the free float and interfering float for each of the activities shown in the activity network below in Figure 6. Adarsha said: 6 years ago. duration b. In our case, Total Float = (duration of path D-E-H) – (duration of path D-G-H) = 17 – 15 = 2 Days. Total Float and Free Float are used in Critical Path Method (CPM) to determine schedule flexibility of an. The project critical path(s): A. Using these formulae the values are calculated and tabulated in the table. Cost Slope of an Activity. We discuss three types of Floats in this video viz Total Float, Free Float and Independent Float with examples. This is why it is the most contested item in disputes and delay analysis. Interfering Float. independent float [enumerate] types of floats. Total float is the sum of free float and interfering float. However in the Gantt (bar) chart it further indicates the type of float. Where to Find Real Online Jobs. None of the above. They. A close inspection of the precedence diagram (Fig. (30 points) Activ Act Duration Preceded By Drill Wel Construct Power Line C Excavate D Deliver Material House Assemble Tank Install Pum Install Pi Foundation Erect Tower and. Who are the experts?3. Given For Activity i-j: Total Float 18 d Free Float 7 d 11 Question(s) 1. Show the critical paths on the network diagrams. The Interfering float of activity C is 15. Operations Management questions and answers. Total float 103. This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. It does not affect start of succeeding activity i. Upate. RELATED LINKS. (40 Points) 14 Ci H, 1 F. Calculate the total, free, and interfering float of activity 20 What is the project duration? What are the critical activities? Calculate the total, free, and interfering float of activity 20 ? Show transcribed image text. Interfering float (INTF) INTF refers to the time you can delay a task from the date you planned to start it without delaying the project's completion date. Determine if there are differences in float values between the AOA method and the AON method and why. Total float is measured as the difference between the early and late start dates (LS - ES) or the early and late finish dates (LF – EF). The Interfering float is the time available to delay an activity without delaying the project's estimated completion time, but delaying an activity into interfering float will delay the start of one or more following. This Float does not interfere with the float time available by the Predecessor activity. Final answer. e. Highlight the critical path. 4 weeks E. The independent float affects only. 2 Make a clear and. Interfering Float. A. It is the chain of stages formative the least time needed for an. Concepts: Normal Time, Normal Cost, Crash Time, Crash Cost of Activities. Project PlanningFree float can never be less than zero. Write this number at the bottom right corner. Concerning dispatching rule, this study calculates the makespan considering all hired regular labors using ACO, identifying the earliest and latest time span, and proposes a novel dispatching rule based on backward scheduling adopting the free float time (FF) and interfering float time (IF) to fit the lowest costs synchronously: where.