4.19 The table below defines the precedence relationships and element times for a new
assembled product. (a) Construct the precedence diagram for this job. (b) If the ideal cycle time
is 1.1 min and the repositioning time is 0.1 min, what is the theoretic
HW #4 Spring 2013
7.2 Slight error in original. Element 5 should be longer. A planned project contains the activities shown in
the table below, along with their required completion times and precedence. (a) Construct the Gantt chart
for the project. (b) D
23.6 A worker is 40 years old and weighs 160 lb. He sleeps 8 hours each night during which time
his average energy expenditure rate is assumed to be at the basal metabolic rate. The physical
requirements of his job result in an average energy expen
Solutions Manual: Ch09-Charting-s
What are the objectives of using charts and diagrams to study work?
Answer: The objectives listed in the text are (1) to permit work processes to be
communicated and comprehended more readily, (2) to
Solutions Manual: Service Operations-s
What are some of the factors that distinguish services from products?
Answer: Products are tangible, while services are intangible. There is little variation from
one unit of a manufactured produ
Solutions Manual: Ch21-Six Sigma-s
21.1 Eight dimensions of product quality are identified in the text. Name four of these
Answer: The eight dimensions of product quality are (1) performance, (2) features, (3)
Solutions Manual: Ch10-Motion Study-s
10.1 What is motion study?
Answer: Motion study is the analysis of the basic hand, arm, and body movements of
workers as they perform manual work or other physical activity.
10.2 What is work design?
Solutions Manual: Ch08-Intro Methods Engrg-s
What is methods engineering?
Answer: As defined in the text, methods engineering is the analysis and design of work
methods and systems, including the tooling, equipment, technologies, work
Solutions Manual: Ch11-Plant Layout-s
11.1 Define the term facility layout.
Answer: Facility layout refers to the size and shape of a facility, and the relative locations
and shapes of the functional areas (e.g., departments), equipment,
Solutions Manual: Ch20-Lean Production-s
20.1 Define lean production.
Answer: As defined in the text, lean production means doing more and more work with
fewer and fewer resources. It also means giving customers what they want and satisfy
Solutions Manual: Ch14-PMTS-s
14.1 Define predetermined motion time system.
Answer: A predetermined motion time system is a database of basic motion elements and
their associated normal time values, together with a set of procedures for a
Solutions Manual: Ch16-Work Sampling-s
16.1 Define work sampling.
Answer: Work sampling is a statistical technique for determining the proportions of time
spent by subjects (e.g., workers, machines) in various defined categories of activi
Solutions Manual: Ch07-Projects-s
What is a project?
Answer: A project is a temporary undertaking directed at accomplishing some major
output, usually requiring substantial resources and significant time to complete. In general,
Solutions Manual: Ch15-Std Data Systems-s
15.1 What is a standard data system?
Answer: A standard data system in work measurement is a database of normal time values,
usually organized by work elements that can be used to establish time s
Solutions Manual: Ch02-Manual Work-s
In terms of human participation, what are the three basic categories of work systems?
Answer: The three categories given in the text are (1) manual work, (2) worker-machine
systems, and (3) automat
Solutions Manual: Ch03-Flow & Batch-s
What does sequential operations mean?
Answer: As defined in the text, sequential operations are a work system in which multiple
processing steps are accomplished in order to complete a work unit,
Solutions Manual: Ch01-Introduction-s
Answer: As defined in the text, work is an activity in which one exerts physical and
mental effort to accomplish a given task or perform a duty.
What are basic motion elements? Gi
Solutions Manual: Ch19-Learning Curves-s
19.1 Describe the learning curve phenomenon.
Answer: The learning curve phenomenon is the reduction in cycle time that occurs in a
repetitive work activity as the number of cycles increase.
Solutions Manual: Ch12-Intro Work Measure-s
12.1 What is the standard time for a task? Provide a definition.
Answer: The standard time for a task is the amount of time that should be required by an
average worker to process one work unit
Solutions Manual: Ch04-Assembly Lines-s
What is a manual assembly line?
Answer: A manual assembly line is a work system consisting of multiple workers who are
organized to produce a single product or a limited range of products for wh
Solutions Manual: Ch13-Direct Time Study-s
13.1 Define direct time study.
Answer: Direct time study is the direct and continuous observation of a task using a
stopwatch or other timekeeping device to record the time taken to accomplish th
Solutions Manual: Ch25-Physical Environment-s
25.1 What does the word photometry mean?
Answer. Photometry is a branch of optical physics that is concerned with the measurement
25.2 What is luminous flux and what are its units of
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Hour Quiz 3a
This exam is closed books, closed notes. You may use a formula sheet as specified in the syllabus. No
lists, figures, tables, or sample problems are allowed. Turn off all cell phones and put them away. Take
off all h
Charting and Diagramming
Objectives of Charts and Diagrams
1. To permit work processes to be communicated and comprehended more readily
2. To use algorithms specifically designed for the particular diagramming technique
3. To divide a given work
Chapter 11 Facility Layout Planning and Design
Refers to the size and shape of a facility as well as the relative locations and shapes of the
functional areas (e.g., departments), equipment, workstations, storage spaces, aisles, and
Motion Study and Work Design
Motion study analysis of the basic hand, arm, and body movements of workers as they perform
Work design design of the methods and motions used to perform a task
Workplace layout and enviro
3.9 A stamping plant supplies sheet metal parts to a final assembly plant in the automotive industry.
Annual demand for a typical part = 150,000 pc. Average cost per piece = $20; holding cost = 25%;
changeover (setup) time for the presses = 5 hours; and c
3.24 Two sheet metal parts, A and B, are produced separately, each requiring two
press-working operations. Part A is routed through operations 1 and 2, and part B is
routed through operations 3 and 4. The two parts are then joined in a welding step
HW 1 Solutions
1) At a company workers work 8 hour days. In a certain month 8600 units were produced by a
work group of 20 workers. There were 21 work days in the month. (a) What is the labor
productivity ratio for this month? (b) In the next month, a red