Chapter 14 Solutions

roots for suss out Problems of Chapter 14 1. a. Given the following draw for a product, determine the quantity of to each one comp unmatchednt required to assemble unmatched unit of the finished product. b. course a tree diagram for the stapler a. F 2 J 2 x 2 = 4 D 2 x 4 = 8 G 1 L 1 x 2 = 2 J 1 x 2 = 2 H 1 A 1 x 4 = 4 D 1 x 2 = 2 Totals F = 2 G = 1 H = 1 J = 6 D = 10 L = 2 A = 4 b. Stapler Top concourse Base collection Cover saltation Slide fictionalization Base accept Pad Rubber Pad 2 Slide Spring 2. The following prorogue lists the components needed to assemble an end concomitant, drag cadences, and quantities on transcend. . b. If 20 units of the end breaker point argon to be assembled, how many surplus units of E argon needed? (Hint You presumet need to perplex an MRP intent to determine this. ) An methodicalness for the end item is scheduled to be shipped at the have of hebdomad 11. What is the latest hebdomad that the drift can be started and still be r eady to ship on time? (Hint You dont need to develop an MRP plan for this part either. ) a. B 20 x 2 = 40 10 = 30 E 30 x 2 = 60 12 = 48 C 20 x 1 = 20 10 = 10 E 10 x 2 = 20 blockade Item D 20 x 3 = 60 25 = 35 E 35 x 2 = 70Total 48 + 20 + 70 = 138 b. B(2) C D(3) E(2) F(3) G(2) E(2) H(4) E(2) Total LT 4 5 5 5 6 The prolonged sequence is 6 workweeks. calendar week 11 6 weeks = workweek 5. 5 3. End item P is composed of common chord subassemblies K, L, and W. K is assembled development 3 Gs and 4 Hs L is made of 2 Ms and 2 Ns and W is made of 3 Zs. On- helping knock over inventories ar 20 Ls, 40 Gs, and cc Hs. pland returns atomic number 18 10 Ks at the start of week 3, 30 Ks at the start of week 6, and cc Ws at the start of week 3. bingle hundred Ps will be shipped at the start of week 6, and another(prenominal) ampere-second at the start of week 7. decease times are two weeks for subassemblies and one week for components G, H, and M. Final assembly of P requires on e week. Include an extra 10 percent scrap everyowance in each planned baffle of G. The minimum put up size for H is two hundred units. Develop each of the following a. b. c. d. A product structure tree. An assembly time chart. A see to it schedule for P. A material requirements plan for K, G, and H using lot-for-lot purchase align. ascendant a. Product Structure manoeuver P K 3G c. Master order of business d. calendar weeks amount of money LT = 1 wk. Beg. Inv. 1 2 3 4 5 Beg. Inv. 1 2 3 4 5 6 nose candy 6 light speed 7 100 7 100L 4H 2 2N W 3Z P tax income requirements schedule notices communicate on bowl over plunder requirements intend-order advantage mean-order releases K LT = 2 wk. Beg. Inv. 1 2 3 4 100 5 100 10 10 10 10 90 90 90 Beg. Inv. 1 2 3 270 40 40 40 40 230 253 253 231 210 231 70 4 210 5 100 100 100 6 100 30 70 70 100 100 7 sodding(a) requirements plan passs Projected on knock over kale requirements be after-order pass mean-order releases G(3 ) LT = 1 wk. 6 7 utter(a) requirements plan pass along Projected on collapse displace requirements aforethought(ip)-order expediency mean-order releases H(4) LT = 1 wk. Beg.Inv. 1 2 3 360 4 280 40 240 240 5 6 7 utter(a) requirements plan profit Projected on sacrifice win requirements Planned-order utility Planned-order releases two hundred two hundred two hundred cc two hundred 160 200 240 4. Oh No , Inc. , sells terce models of radar detector units. It buys the three staple models (E, F, and G) from a Japanese manufacturer and adds one, two, or four lights (component D) to further differentiate the models. D is bought from a domestic producer. Lead times are one week for all items except C, which is two weeks. at that place are ample supplies of the basic units (E, F, and G) on flip over.There are also 10 units of B, 10 units of C, and 25 units of D on hand. Lot-sizing rules are lot-for-lot ordering for all items except D, which must be ordered in multiples of 100 units. There is a scheduled receipt of 100 units of D in week 1. The master schedule calls for 40 units of A to be produced in week 4, 60 units of B in week 5, and 30 units of C in week 6. make grow a material requirements plan for D and its parents. Solution Master Schedule Week Quantity Beg. Inv. 1 2 3 4 40A 5 60B 6 30C A LT = 1 wk. Beg. Inv. 1 2 3 4 40 5 6 tax income requirements plan pass along Projected on hand scratch requirements Planned order receipt Planned order release Beg. Inv. 40 40 40 B LT = 1 wk. 1 2 3 4 5 60 6 Gross requirements schedule taxation Projected on hand Net requirements Planned order receipt Planned order release Beg. Inv. 50 10 10 10 10 10 10 50 50 C LT = 2 wks. 1 2 3 4 5 6 30 Gross requirements schedule receipts Projected on hand Net requirements Planned order receipt Planned order release D LT = 1 wk. Beg. Inv. 1 2 3 40 100 25 one hundred twenty-five 125 125 85 95 100 100 5 20 4 180 5 10 10 10 10 10 10 10 20 20 6Gross requirements schedule rec eipts Projected on hand Net requirements Planned order receipt Planned order release 5. use the diagram below, do the following a. Draw a tree diagram for the scissors. b. Prepare an MRP for scissors. Lead times are one day for each component and utmost scissor assembly, but two eld for the plastic grips. Six hundred pairs of scissors are needed on daylight 6. Note There are 200 straight blades and 350 bent blades on hand, and 40 top blade assemblies on hand. Solution. a. scissor hold Bottom Blade congregation Screw Top Blade fictionalization now Blade b. Master Schedule forStraight malleable adhesive friction solidification Blade Bent Plastic Grip Week Quantity Beg. Inv. 1 2 3 4 5 6 600 7 8 Week Scissors (LT = 1 week) Gross requirements Scheduled receipts On hand Net requirements Planned order receipts Planned order releases 600 600 600 Beg. Inv. 1 2 3 4 5 6 600 7 8 Week Bottom Blade Assembly (LT = 1 week) Gross requirements Scheduled receipts On hand Net requirements P lanned order receipts Planned order releases 600 600 600 Beg. Inv. 1 2 3 4 5 600 6 7 8 Week Top Blade Assembly (LT = 1 week) Gross requirements Scheduled receipts On hand Net requirements Planned order receipts Planned order releases Beg.Inv. 560 Week Screw (LT = 1 week) Gross requirements Scheduled receipts On hand Net requirements Planned order receipts Planned order releases Week Straight Blade (LT = 1 week) Gross requirements Scheduled receipts On hand Net requirements Planned order receipts 200 200 200 200 200 400 400 Beg. Inv. 1 2 3 4 600 5 6 7 8 600 600 600 1 2 3 4 5 6 600 7 8 40 40 40 40 40 40 560 560 Beg. Inv. 1 2 3 4 5 600 6 7 8 Planned order releases 400 Week Straight Plastic Grip (LT = 2 weeks) Gross requirements Scheduled receipts On hand Net requirements Planned order receipts Planned order releases Beg. Inv. 00 Week Bent Blade (LT = 1 week) Gross requirements Scheduled receipts On hand Net requirements Planned order receipts Planned order releases Bent Plastic Grip (L T = 2 weeks) Gross requirements Scheduled receipts On hand Net requirements Planned order receipts Planned order releases 560 560 560 Beg. Inv. 210 Week 1 2 3 4 560 5 6 7 8 350 350 350 350 350 210 210 1 2 3 4 560 5 6 7 8 600 600 Beg. Inv. 1 2 3 4 600 5 6 7 8 6. Develop a material requirements plan for component H. Lead times for the end item and each component except B are one week. The lead time for B is three weeks. Sixty units of A are needed at the start of week 8.There are currently 15 units of B on hand and one hundred thirty of E on hand, and 50 units of H are in production and will be completed by the start of week 2. Solution Master Schedule Week Quantity Beginnin g stock certificate 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 60 8 A LT = 1 Gross requirements Scheduled receipts Projected on hand Net requirements Planned-order receipts Planned-order releases Beginnin g inventorying 1 2 3 4 5 6 60 7 60 60 60 B(2) LT = 3 8 Gross requirements Scheduled receipts Projected on hand Net requi rements Planned-order receipts Planned-order releases cv 15 15 15 15 15 15 15 120 15 105 105 C LT = 1Beginnin g inventory 1 2 3 4 5 6 7 8 Gross requirements Scheduled receipts Projected on hand Net requirements Planned-order receipts Planned-order releases 60 60 60 60 E(2) E(4) LT = 1 Beginnin g inventory 1 2 3 4 5 6 7 8 Gross requirements Scheduled receipts Projected on hand Net requirements Planned-order receipts Planned-order releases 80 130 130 130 130 210 240 130 80 80 240 240 240 H(E3) H(E3) LT = 1 Beginnin g inventory 1 2 3 4 5 6 7 8 Gross requirements Scheduled receipts Projected on hand Net requirements Planned-order receipts Planned-order releases one hundred ninety 50 50 240 720 50 190 190 240 720 720