• Author / Uploaded
• Florenciano Johanes

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Lampiran 1 From Local Supplier Raw Softwoods ($/thousand board feet)

400 January

Demand (000 board feet) Production Cost ($)

February

March

1,000

1,100

1,300

400,000

440,000

520,000

From Chile Production Cost ($/thousand board feet) Shipping Cost ($/thousand board feet) Maximum shipping capacity (board feet/month) Lead time (month) Production Rate (000 board feet/month/worker) Workhour (hour/month/worker) Hiring and Training ($/employee)

150 50 1,500,000 1

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50 160 1,000

Layoff Cost ($/employee)

500

Overtime Cost ($/thousand board feet)

200

Holding Cost ($/thousand board feet)

25

Current Worker

20

Lampiran 2 Chase Strategy - Vary Workforce No Inventory January Demand (000 board feet)

February

March

-

1,000

1,100

1,300

1,000

1,100

1,300

1,500

150,000

165,000

195,000

225,000

Shipping Cost ($)

50,000

55,000

65,000

75,000

Workers Required

20

22

26

30

New Workers Hired

-

2

4

4

Hiring Cost ($)

-

2,000

4,000

4,000

Workers Laid Off

-

-

-

-

Layoff Cost ($)

-

-

-

-

Total Cost ($)

200,000

222,000

264,000

304,000

Shipping from Chile (000 board feet) Production Cost ($)

Lampiran 3 Level Strategy - Constant Workforce + Inventory Assumptions: Shipping from Chile (000 board feet/month) Local Raw Material (000 board feet/month) Safety Stock (000 board feet/month) Overtime (hour/month/worker)

1,500 =

30 worker add 10 worker

300 25% of demand 40 January

February

March

Shipping from Chile (000 board feet)

1,500

1,500

1,500

Beginning Inventory (000 board feet)

-

-

-

Demand (000 board feet)

1,000

1,100

1,300

500

900

1,100

units overtime

-

-

-

Overtime Cost ($)

-

-

-

Safety Stock (000 board feet/month)

250

275

325

Unit Excess (unit before o.time-sstock)

250

625

775

6,250

15,625

19,375

Local Raw Material (000 board feet)

-

-

-

Production Cost Local ($)

-

-

-

Production Cost Chile ($)

225,000

225,000

225,000

Shipping Cost ($)

75,000

75,000

75,000

Total Cost ($)

306,250

315,625

319,375

Units available before overtime (begin+production-demandf)

inventory cost (25)

April

May

June

1,500

1,800

600,000

720,000

July

2,200

August

September

October

November

December

2,500

2,400

2,000

1,600

1,200

800

880,000 1,000,000

960,000

800,000

640,000

480,000

320,000

https://omiupo1415.wordpress.com/2015/04/16/chapter-3-aggregate-planning-processes-chase-level-and-mix-strategy-practical-cases

April

May

June

July

August

September

October

November

December

1,500

1,800

2,200

2,500

2,400

2,000

1,600

1,200

800

1,800

2,200

2,500

2,400

2,000

1,600

1,200

800

-

270,000

330,000

375,000

360,000

300,000

240,000

180,000

120,000

-

90,000

110,000

125,000

120,000

100,000

80,000

60,000

40,000

-

36

44

50

48

40

32

24

16

-

6

8

6

-

-

-

-

-

-

6,000

8,000

6,000

-

-

-

-

-

-

-

-

-

2

8

8

8

8

16

-

-

-

1,000

4,000

4,000

4,000

4,000

8,000

366,000

448,000

506,000

481,000

404,000

324,000

244,000

164,000

8,000

September

October

November

December

add 10 worker

10000

April

May

June

July

August

1,500

1,500

1,500

1,500

1,500

1,500

1,500

1,500

1,500

-

-

-

-

-

-

-

-

-

1,500

1,800

2,200

2,500

2,400

2,000

1,600

1,200

800

1,100

800

100

(900)

(900)

(500)

(100)

300

1,000

-

-

-

900

900

500

100

-

-

-

-

-

36,000

36,000

20,000

4,000

-

-

375

450

550

625

600

500

400

300

200

725

350

-

-

-

-

-

-

800

18,125

8,750

-

-

-

-

-

-

20,000

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

225,000

225,000

225,000

225,000

225,000

225,000

225,000

225,000

225,000

75,000

75,000

75,000

75,000

75,000

75,000

75,000

75,000

75,000

318,125

308,750

300,000

336,000

336,000

320,000

304,000

300,000

320,000

Total 19,400 7,760,000

d-mix-strategy-practical-cases/

TOTAL

30,000 50 25,000 3,935,000

TOTAL

4,850 88,125

3,784,125

Demand Number of working days

January February March April 1000 1100 1300 1500 20 20 20 20 Costs

Regular time Overtime Inventory Holding Cost Shipping US Spot Market (Subcontract)

$150 /1000 board $200 /1000 board $25 /1000 board $50 /1000 board $400 /1000 board

Hours required per 1000 board Regular Hours per month per worker Overtime hours max per month per worker Regular monthly wages per worker Overtime wages per hour Hiring Cost per worker Firing cost per worker Holding cost per 1000 board Beginning Workers

3.2 160 40 7500 63.5 1000 500 25 20

Assumtions : Current worker

20

Lampiran 4 Plan 3 (Mix) current wf + subcontract no inventory January February March April Production Requirement 1000 1100 1300 1500 Working days per month 20 20 20 20 Production Hours Available 3200 3200 3200 3200 Actual Production 1000 1000 1000 1000 Units Subcontracted 0 100 300 500 Subcontracting Cost 0 35000 105000 175000 Shipping cost $50,000 $50,000 $50,000 $50,000 Straight time cost $150,000 $150,000 $150,000 $150,000

May

June 1800 20

May

July 2200 20

2500 20

August September October November December 2400 2000 1600 1200 800 20 20 20 20 20

June July August September October November December 1800 2200 2500 2400 2000 1600 1200 800 20 20 20 20 20 20 20 20 3200 3200 3200 3200 3200 3200 3200 3200 1000 1000 1000 1000 1000 1000 1000 1000 800 1200 1500 1400 1000 600 200 -200 280000 420000 525000 490000 350000 210000 70000 0 $2,660,000 $50,000 $50,000 $50,000 $50,000 $50,000 $50,000 $50,000 $50,000 $600,000 $150,000 $150,000 $150,000 $150,000 $150,000 $150,000 $150,000 $150,000 $1,800,000 Total Cost $5,060,000