HW-04-14-10s-Ch11

HW-04-14-10s-Ch11 - IE 131 Solutions for Problems due Apr...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
IE 131 Solutions for Problems due Apr 14 (Ch 11) 11.1 A factory has five production departments: M (milling), D (drilling), T (turning), G (grinding), and F (finishing). Products are routed for processing through these departments in the quantities and sequences indicated in the table below. (a) Based on these data, construct the from- to chart. (b) Develop the activity relationship chart for these five departments, given that the from- to chart is the only basis for it. Product Quantities per day Sequence 1 25 M-D-G 2 5 T-G-F 3 10 T-F 4 50 D-M-D-G-F 5 25 M-T-F 6 15 M-G Solution : (a) From-to chart and (b) activity-relationship chart. To determine the closeness ratings in (b), the following divisions were used: “A” = number of trips > 75; “E” = number of trips = 50 to 75; “I” = number of trips = 25 to 49; “O” = number of trips = 1 to 24, and “U” = zero trips. (a) From-to chart (b) Activity-relationship chart From\T o M D T G F M D T G F M - 75 25 15 M - A I O U D 50 - 75 D - U E U T - 5 35 T - O I G - 55 G - E F - F - 11.4 Two alternative plant layout designs are being proposed to produce a new product. The production will consist exclusively of labor-intensive assembly. The first alternative is a 300,000 sq ft building (single-story) and will use a one-shift operation. The second alternative is a 100,000 sq ft building (single-story) and will use a three- shift operation. Under these assumptions, the production capacities of the two plants will theoretically be equal. Compare the two alternatives in terms of the following criteria: (a) construction costs, (b) flexibility to adapt to the ups and downs in product demand, (c) labor availability, (d) work flow and material handling? Answer: (a) Because the three-shift building is one-third the size of the one-shift building, its construction costs will be significantly less. Building costs are often estimated largely on the basis of area. (b) The one-shift building will be more flexible in coping with increases in demand. The three-shift building will be more flexible in dealing with decreases in demand. (c) The same total number of workers is required (approximately) for the two alternatives. However, the three-shift building will have to operate evening and late night shifts. Labor is
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

HW-04-14-10s-Ch11 - IE 131 Solutions for Problems due Apr...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online