Utilization of Floor Plan in Stock Layout.

TM 38-400/NAVSUP PUB 572/AFMAN 23-210 MCO 4450.14/DLAM 4145.12

determined, the direction of flow and storage must be

This is the ideal layout for heavylifts as it permits the car

established and entered on the floor plan. Figures 2-41

to be spotted on the more distant track and the crane to

and 2-42 are examples of layouts after preparation of

operate between the car and the storage point. In this

initial floor plans.

arrangement, the distance from the crane to the material

in the car or its intended storage point is cut to a

b. Planning uses. The requirement for storage

minimum. This permits maximum utilization of crane lift

space by type, amount, and position must be calculated

capacity. Usually, double-track storage areas are at a

utilizing estimated or known item quantities, sizes,

premium; therefore, where possible, the area on both

characteristics, and the demand frequency shown in

sides of a double track should be used for storage of

current reports, historical data, and forecasts.

heavy materials. However, to facilitate the use of the

Quantities of bin sections and the various types of racks

storage area behind this heavy material, it is necessary

required will then be determined. The amount and

to provide 20-foot aisles at 100-foot intervals leading

location of the space assigned for these storage aids will

from the track to the inner storage areas.

be in consonance of this section. A preliminary layout

(5) With a locomotive crane, a 2-foot

will be drawn on the floor plan and subjected to a

clearance between stores and swing of the cab and

comprehensive check to verify the validity of the data

counter balance is required. This will permit the crane

used and the calculations which were made from the

to make the swing required to move material from the

data. It is essential that any revision of a layout be

car to the stack without danger of the counter balance or

accomplished in the planning stage rather than after

cab of the crane colliding with the materials stored on

storage aids have been erected and material stored.

either side of the tracks.

The principles of efficient storage layout (see fig 2-41)

require the minimum number and width of aisles, the

(6) Where

crawler,

truck-mounted,

maximum degree of straight flow movement patterns,

warehouse cranes are used, it is necessary to maintain

the approximate positioning of bin and rack storage

a 25-foot wide operational aisle along one side of the

areas and storage support function areas, and the

track, measured from the rail nearest to the storage

maintenance of flexibility in storage depth. The storage

area. This aisle provides the necessary clearance

operation shown in figure 2-41 is small in size, but the

between the car and stock for efficient crane operations.

principles shown apply to any storage operation

Also, this aisle is necessary to permit the loading or

regardless of square feet occupied, the range and depth

unloading of cars by fork truck and the transportation of

of items stored, or the simplicity or sophistication of

stock by crane, fork truck, or tractor-trailer train from car

MHE used. Figure 2-42 illustrates placement of bins for

side to the storage areas not immediately adjacent to

a warehouse automated materials handling system. In

the track.

such a system, popular items are placed in bins nearest

(7) Because of track, road layout, and/or

the material flow lines (conveyors, etc.).

Storage

terrain, each hard-surfaced open storage area presents

layouts must be planned to consolidate productive

varied problems in space layout. For this reason, layout

functions into a centralized location to the greatest

plans must be flexible in order to utilize a higher

feasible extent. Such planning will result in a layout

percentage of the net usable space in each area.

which reduces travel time and distances. This, in turn,

2-11. Utilization of Floor Plan in Stock Layout.

decreases the requirements for MHE, increases work

a. Basic use. Using the floor plans, enter the

unit production per man-hour, lessens personnel fatigue

location of aisles, shipping, receiving, bin, bulk, medium

and error rate, provides for closer supervision and

lot, pallet rack, and storage operational areas. After the

greater security, and permits flexibility in use of the work

location of the basic storage and operational areas are

force.

2-41