Develop a LOB schedule for 20 houses. The target output rate for this project is 3 houses per week. A typical working week includes five 8-hour days. The construction of a single house consists of the following five sequential activities:
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- Ed is planning to build a treehouse as a present for his son's upcoming 10th birthday. The details for each task are as follows: DE F G AD C,E F 12 Task A B Preceding Task Duration (day) | 12 A B 10 12 5 Cost (RM) 50 140 120 60 70 80 60 (a) Obtain the following: • The number of days it will take for Ed to finish building the treehouse. • Which tasks are cannot be delayed at all without delaying the whole project. • The total cost of building the treehouse. (b) Due to illness, Ed has to begin building the treehouse later than planned. He reckons that he must reduce the build duration by 3 days to complete the treehouse by his son's birthday. He has determined the crash cost and crash time for each task as follows: Task А В С DE F G Crash Time (day) | 12 8 9 8 10 5 6 Crash Cost (RM) | 50 170 180 70 95 80 60 Obtain the following: • All tasks that are crashed and by how much. • The new total cost for building the treehouse.A new order filling system is needs to be installed as soon as possible. The following activities need to be completed in the order shown below. Also provided is the cost information to reduce the normal activity times. 4. Activity Crash Normal Crash Immediate Predecessors Normal Time Time Cost ($) Cost ($) A 7 5 2000 3500 --- В 10 8 3000 5700 A 8. 7 3000 3800 A D 6. 4 1600 2600 C E 7 4 2000 4100 3 1200 2800 D, E В, С F, G G 11 8 8200 10900 H 4 3 2600 4800 Crash the project to 25 days. What will the total crashing cost be? а. b. с. What activities will be crashed?Environment Recycling, Inc. must clean up a large automobile tire dump under a state environmental cleanup contract. Suppose that some of the activities in the Environment Recycling, Inc. project can be crashed.The table below shows the crash times and costs associated with performing the activities at their original (normal) times and also for the crash times (all times are in weeks). Normal Crash Normal Crash Activity Predecessor(s) Time Time Cost Cost A — 6 5 $490 $640 B A 9 7 1,800 2,400 C A 8 7 860 1,060 D — 7 6 620 920 E B, C, D 9 7 1,900 2,300 F D 4 2 820 1,320 G D 4 3 620 870 H E 5 4 500 710 I F, G, H 7 5 950 1,550 Choose the correct network for the project. The correct network is C . Identify the critical path. The critical path is A-B-E-H-I. What is the total project completion time? Round your answer to the nearest whole number. ___ weeks What is the lowest cost solution if…
- 2:30 PM ě 0.3KB/s 1ll 54 4G+ 00:15:12 Remaining Multiple Choice The primary difference between PERT and CPM is that CPM uses probabilities on the activity times and PERT does not. O. PERT considers activity costs and CPM does not. PERT can assign probabilities to activity times and CPM does not. CPM considers activity costs and PERT does not. 5 of 20 II1.The chief engineer of firm XYZ is responsible for supervising the construction work of a road. He has identified the activities and their durations for each stage of operation. Activity Duration (days) Preceding activities A 5 - B 10 - C 1 - D 8 B E 10 B F 9 B G 3 A,D H 7 A,D I 4 F J 3 F K 5 C,J L 8 H,E,I,K M 4 CJ Draw a network diagram (AOA) for this road construction project. Which are the critical activities? How long the project will take?A project has the following information (FS dependencies). Crash the schedule to: 23 time periods Nornal Crash Normal Crash Activity Time Time A B C IC D E F G H 4 5 4 4 4 5 5 8 Activities Crash by: ● Submit your results in a table format. Cost Cost Predecessors 4 6,000 6,000 4 9,000 12,000 3 6,000 9,000 2 6,000 7,500 2 6,000 7,500 4 9,000 12,000 4 9,000 13,000 6 18,000 22,000 A B Final Results C D A A A B,C B,C,D F E,G E F G Total Crash Cost: You do not have to show your detail calculations. However, if you like to do so: H 5°
- The normal time, crash time, and cost estimates for the setup of a new produc tion line at Ithaca Custom Manufacturing (ICM) Inc. are listed in Table 8.12. Activity Times and Immediate processors Activity Normal Time Hours Crash Time Hours Crash (Cost per hour) Immediate Processor A 5 4 $2000 - B 4 4 - A C 6 4 $1500 A D 3 3 - A E 4 3 $1000 B,C F 5 3 $1200 C,D G 2 2 - E,F The Project Includes Four Paths: Compute the unsolved activities To get the project numbers for the four paths you have to add the numbers in the chart. For example, ABEG= 5+4+4+2=15 ABEG: 15 ACEG: ACFG: 19 ADFG: To reduce the length of the project, we must start reducing the duration of the critical path in the lowest-cost manner (see Table 8.13). Crash Time and Cost Step Action Cost ABEG Normal Hours ACEG Crash Time Hours ACFG ADFG 1 Reduce F By 1 hour 1200 16 18 14 2…Consider a project with seven tasks. Three tasks – tasks 3, 4, and 5 – require a specific resource for completion; all needed resources must be available at the site before a task can be started. Task Duration Predecessor (s) Units of Value of Resource Completed Task Needed 3 3 10 $4000 3 1 10 S3000 3 12 $5000 1 4 7 2, 5,6 Each resource unit cost $100; no quantity discounts are available. In addition, it costs $2 per unit per time period to hold this resource in stock, and it costs $45 just to place an order for materials (independent of the number of units ordered). When should each task in the project be started and when and how many resources should be ordered to minimize total project costs? 1. 1, en en 1. 2. enTeloxy Engineering (A) Teloxy Engineering has received a onetime contract to design and build 10 000 units of a new product. During the proposal process, management felt that the new product could be designed and manufactured at a low cost. Some members felt that it would be more economical to purchase the product for R200 each in the marketplace, with an extra R20 per unit handling of the 10 000 units. The Management team set up a meeting with the manufacturing team to see if they can manufacture the component at a cheaper price than buying it from the outside. The manufacturing team informs them that it can produce a maximum of 10,000 units, just enough to fulfil the contract. The setup cost will be R100 000 and the raw material cost is R120 per component. Since Teloxy has never manufactured this product before, manufacturing expects the following defects: % defective 10 20 30 40 Probability of occurrence (%) 10 20 30 25 15 All defective units must be removed and repaired at a cost…
- Kiko Teddy Bear is a manufacturer of stuffed teddy bears. Kiko would like to be able to produce 40teddy bears per hour on its assembly line. The following information will assist in answering thequestions that follow: Task Information for Kiko Teddy Bear Work Element Task Description ImmediatePredecessor Task Time (inseconds)A Cut teddy bear pattern None 90B Sew teddy bear cloth A 75C Stuff teddy bear B 50D Glue on eyes C 20E Glue on nose C…Kiko Teddy Bear is a manufacturer of stuffed teddy bears. Kiko would like to be able to produce 40teddy bears per hour on its assembly line. The following information will assist in answering thequestions that follow: Task Information for Kiko Teddy Bear Work Element Task Description ImmediatePredecessor Task Time (inseconds)A Cut teddy bear pattern None 90B Sew teddy bear cloth A 75C Stuff teddy bear B 50D Glue on eyes C 20E Glue on nose C…You and several friends are about to prepare a lasagna dinner. The tasks to be performed, their immediate predecessors, and their estimated durations are as follows: Task Task Description Predecessors Time estimate (in minutes) te σ2 to tm tp A Slice the mozzarella -- 4 5 6 B Mix eggs and ricotta cheese -- 5 6 8 C Cut up onions and mushrooms _ 6 7 9 D Cook the tomato sauce C 20 23 24 E Boil large quantity of water _ 15 15 15 F Cook and drain the noodles E 12 13 16 G Assemble all the ingredients B,D,F 10 13 14 H Preheat the oven _ 14 15 15 I Bake the lasagna H, I 30 32 35 Draw the network diagram for this project. Clearly label the earliest start, earliest finish, latest start and latest finish for each activity. Specify the critical path and the critical activities…