This was chapter

Chapter 21, Problem 12OQ in the 15th edition.

Chap 21, # 12, p. 635 of the 16th ed. of Jacob & Chase Operations and Supply Chain Management problem.

One Unit of A is made of two units of B, three units of C, and two units of D. B is composed of one unit of E and two units of F. C is made of two units of F and one unit of D. E is made of two units of D. Items A, C, D and F have one week lead times. B and E have lead times of two weeks. Lot for lot (L4L lot sizing is used for items A, B, C, and D; lots of size 50 and 180 are used for items E and F, respectively. D has an on hand inventory of 50; all other items have zero beginning balances. We are scheduled to receive 20 units of

item E in Week 2; there are no other scheduled receipts. Construct a simple low-level coded bill of materials (product structure tree) and indented and summarized parts list. If 20 units of part A are required in week 8, use the low-level coded bill of materials to find the necessary planned-order releases for all components.

The chapter covers Material Requirements Planning.