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Facilities Planning [EXP-73147]
119 SOLVED PROBLEMS
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Question: 9.4
A machine shop 100^’ ×40^’ with a 13^’ ceiling will be illuminated for automatic machining and rough grinding. Uniform lighting is required throughout the machine shop. If the luminaries are to be ceiling mounted, all ceilings and walls are to be painted white, and all luminaries are to be cleaned every 24 months
Verified Answer:
Step 1: Determine the level of illumination. From ...
Question: 4.1
A new facility is to have 200 employees. A survey of similar facilities indicates that one parking space must be provided for every two employees and that 40% of all automobiles driven to work are compact automobiles. Five percent of the spaces should be allocated for the handicapped. The available
Verified Answer:
If the new facility were to have the same number o...
Question: 10.60
AGV utilization with FCFS dispatching Assuming the transfer station in Figure 10.59b is labeled station 9, consider the zone defined by stations {1, 6, 7, 8, 9}. Suppose two job types (labeled A and B) are handled through this zone. Assuming that stations 1 and 9 serve as I/O stations for the zone,
Verified Answer:
Suppose the empty AGV travel speed is fixed at 5 s...
Question: 10.59
Alternative conveyor speeds and delivery rates to convey wheat Suppose we want to convey wheat having a density of 30 lb per cubic foot from a delivery truck to the top of a grain silo. From Table 10.26, we see that the maximum angle of incline for grain is 20° . If the vertical distance from the e
Verified Answer:
If we use a belt that is
18^{\prime \prime}...
Question: 9.2
An 18^’-tall facility having the dimensions 250^’×100^’ has eight 4^’×8^’ double-pane glass windows and two 3^’×8^’ glass doors on both the front and back sides. The facility is made of 8^” solid cinder block and a 1^” metal insulated roof with an insulated ceiling and an uninsulated slab floor.
Verified Answer:
The following data needed to calculate the heat lo...
Question: 10.68
Analyzing a fleet of delivery trucks A distribution center delivers material to the retail stores in its service region. Twelve trucks are used for delivery. The time required to load a truck is exponentially distributed with a mean of 40 minutes; the time required to deliver a load and return is e
Verified Answer:
Table 10.37 Results Obtained by Peck and Hazelwood...
Question: 10.61
Analyzing a waiting line at a workstation To illustrate the approach suggested for analyzing a waiting line problem, suppose a workstation receives parts automatically from a conveyor. An accumulation line has been provided at the workstation and has a storage capacity for five parts (N = 6). Parts
Verified Answer:
Parts arrive at a Poisson rate of 1 per minute; se...
Question: 10.63
Analyzing a waiting line in which arrivals are affected by the number of customers waiting for service Consider a tool crib with two attendants (c = 2). Time studies indicate customers arrive in a Poisson fashion at a rate of 12 per hour, so long as no more than one customer is waiting to be served
Verified Answer:
From Table
10.34
, it is seen that [...
Question: 10.62
Analyzing an accumulation line serving two workstations The previous example involved a single server (c = 1). We consider now an example in which two servers are present (c = 2). Suppose, in the previous situation, the accumulation line supplies parts for two workstations, as depicted in Figure 10
Verified Answer:
Parts are removed from the accumulation line, work...
Question: 10.66
Analyzing congestion at a receiving dock Truckloads of material arrive at a receiving dock according to a Poisson process at a rate of two per hour. The number of unit loads per truck equals 10. The time required to remove an individual unit load from a truck is exponentially distributed with a mea
Verified Answer:
A single lift truck is used in the receiving area ...
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