a construction task has been estimated to take an average of 25 days with a standard deveation of 4 days. What duration should be used if there is a 90% confidence that the duration will not be exceeded? What is the probability that the duration will actually exceed 3 days? Please show formulas used and indicate answers
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a construction task has been estimated to take an average of 25 days with a standard deveation of 4 days. What duration should be used if there is a 90% confidence that the duration will not be exceeded? What is the probability that the duration will actually exceed 3 days?
Please show formulas used and indicate answers
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- According to a construction company plan, a project must be implemented in three consecutive stages during six months. The chance that the first stage is completed on time is (0.5). The chance that the second stage is completed on time is (0.3) given that the first stage is completed on time. The chance that the third stage is completed on time is (0.2) given that both the first and the second stages are completed on time. Accordingly, the probability will be equal to (1) when all three stages .are completed on time True O False Oa steelworks foreman, 2 skilled steelmen, and a steelmen helper can finish 461 kg of rebar installation in a week. Calculate the unit labor cost per kg of rebar installation using the following data.Q2: For the project, its data shown below find: ● Time in weeks that gives a probability of %97.5 Probability of finishing the project 4 weeks more than TE Probability of finishing the project 3 weeks less than TE Act. 1-2 2-3 2-5 2-4 3-4 3-7 5-6 6-7 4-7 0 8 4 7 7 4 7 10 10 4 M 10 5 9 6 8 14 14 5 P 24 12 21 11 8 15 24 24 12
- 6 The third question: For a part of a construction project whose activities are shown in Table No. 3, the project was visited on the eighth day after the start of work on it, and it was found that the two actions A and B were fully accomplished. event c a quarter of which was accomplished, activity G was five completed, activity F was completed The completion of a third of It, other activities have not started yet, but it is expected after the end of the event and the existence of a comprehensive ban for a period of 3 days. Therefore, it was decided to postpone the work of Event E for a period of three days (days of ban). In light of the information above, find the time period required to complete the project and the critical path before and after the update Table3 Act. Dur.(week) Preceded by A A D 5 G 10 A,D 5 C,G F 12 A,D H 6 FThe total cycle time for a scraper in a construction project along Ayala Boulevard is 20 mins. If the a 2.1km of the area will be scraped, and the speed of a single push load scraper is 0.08 mph, assuming a standard dump time, a. calculate the load time in seconds b. how many scrapers are required if the scraper's pusher has a cycle time of 2 mins. Write your solutions. Use engineering lettering. need answer please in engineering letteringWhat is the probability of completion of the project in 17.5 months? * Actv. Duration (month) a m 5-10 4 5-15 4 10-20 4 4 7 10-25 10-30 4 5 6. 15-25 3.5 5.5 7.5 15-30 3 20-35 9 12 25-35 5 8. 30-35
- The following bar chart shows the activities to complete a project in 6 months (each cell represents 1 month). The total project cost is $700. After 3 months, Activities A, B, half of C, and half of D are completed, for a cost of $200. For this point in time (2 months after the start date), what are the values of the budgeted cost of work performed, the budgeted cost of work scheduled, and the actual cost of the work performed?The figure below shows the road network inside a town proper. According to accident statistics over the last three years, the ten intersections having the highest number of accidents are shown in the corresponding table. The total entering traffic for each intersection is also shown. Identify the intersections that may be considered hazardous, using 95 percent level of confidence. No. of accidents Daily entering volume Intersection no. 15,900 18,300 24,000 13,600 14,200 17,120 13,700 19,300 47,900 17,100 1 243 2 200 3 310 4 180 239 6. 250 190 10 8 360 350 6. 10 40010. Assume that the duration of some activities is not known with certainty. The estimates of these activities are shown below. Activity A C D G H Optimistic Q 8 3 10 13 8 Most Likely 10 5 12 15 10 POM a. What is the project's expected completion time and its variance? b. What is the probability that the project will be completed in 61 days or more? c. What is the probability that the project will be completed in no more than 54 days? c. If the company wants a 94% probability of completing the project on time, state the latest time each activity should have started and completed. Pessimistic 5+ 12 7 14 17 12
- 10. If there is a river on the road construction site, how to solve the problem? * Your answerQUESTION 6. The activities involved in the construction of a new shopping mall are given in Table Q6. One resource type will be used during the contract. Determine minimum level of the resource required to complete the project. Table Q6 Activity Duration Predecessors Resource (units/week) (Weeks) A B 2 2 2 1 2 3 1 5 3 1 E 2 6. 2 F G 3 H 6. 4 4 4 5, 6 6, 7 2, 8 2, 8, 9 10, 11, 12, 13 4 2 K 2 L. 2.Q3: The construction plan for a house is shown in figure and table below, gives the manhoures required and team size for each Activity. Prepare a line of balance schedule for a contract of 15 houses using rate of build of 3 house/ week and each team working at their natural rate. Assume 5 day working week, 8 hours per day, and a minimum buffer time 5 days. A В E D Activity Manhours per activity(M) Men per activity(Q) A B F G 180 320 200 60 38 120 80 40 4 4 2 2 3 2 3