The demand for subassembly S is 130 units in week 7. Each unit of S requires 1 unit of T and1 unit of U. Each unit of T requires 1 unit of V, 1 unit of W, and 1 unit of X. Finally, each unit of U requires 2 units of Y and 3 units of Z. One firm manufactures all items. It takes 2 weeks to make S, 1 week to make T, 2 weeks to make U, 1 week to make V,3weeks to make W,1 week to make X, 2 weeks to make Y, and 2 weeks to make Z.

Click the icon to view the product structure and the time-phased product structure. In addition to 13 units of S, there is also a demand for 20 units of U, which is a component of S. The 20 units of U are needed for maintenance purposes. These units are needed in week 6. Modify the gross material requirements plan to reflect this change (type 0 if the input box is not used).

		Week							Lead Time
Item		1	2	3	4	5	6	7	(weeks)
S	Gross req
	Order release								2