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Warehouse Layout - Automated
or Manual.
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Space optimisation
using
different racking types and aisle widths.
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Warehouse Layout - Best Practice
Solutions at a Glance
The issue: A new kind of
warehouse for a new kind of Customer?
The
warehouse environment has drastically changed. As a result of
customer demand for faster and more accurate deliveries, the
emphasis is now on accelerating product flow and managing costs.
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Lets Look at the
Business Case "For & Against" an Automated
Warehouse |
For:
- Designed to
eliminate manual handling and worker judgment
and frequently is accompanied by reductions in
labour costs, theft and errors.
- Since manual
labour is reduced, the business can operate on
three shifts with low incremental labour
expense.
- The systems
move bulk pallets very efficiently and quickly
to ship docks.
- Control of
pick waves and timing is much more predictable
than manual warehouses.
- Handles high
volume full pallet picking very efficiently,
ideal for pick face replenishment.
- Very narrow
aisles, giving more space for pallet storage.
- Very dense
storage media, lots of pallets into less square
metres.
- Is an enabler
for very high warehouses, thus increasing pallet
storage capacities, with a smaller floor foot
print.
- Is an enabler
for automated bar-code reading technology,
reducing pick errors.
- Inventory
reporting and accuracy should be much improved.
Against:
- Expensive to
implement, with a long payback period, very
capital intensive.
- Difficult to
move, remove or modify, less flexible than
conventional warehouses.
- Contains high
mechanical and/or software complexity, which
often makes implementation and thorough
"debugging" difficult.
- When a
significant part of the system fails, the whole
system usually "goes down" due to a high degree
of integration and lack of feasible backup
systems. (The ATM system is a good everyday
example).
- Usually will
require mechanical & electrical technicians on
site to problem solve.
- Can be very
complicated where there is lots of case picking
to do, unless each product is given a forward
pick face outside of the automated warehouse.
Examples
of Automated Operations:-
  
 
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Automated
& Manual Warehouses -
"The Best Space
Optimisation" |
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Aisle Types & Widths:-
Aisle types and
widths are a key factor in optimising the amount
warehouse racking locations.
Lift trucks used
for handling unit loads in racked storage are
categorized by the aisle widths they are designed
to be operated in.
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Wide Aisle
(WA) trucks are the standard
counterbalanced lift trucks that have become
synonymous with the term forklift. Wide
aisle trucks generally operate in aisles
greater than 11 with 12 being the norm for
handling 48 deep loads.
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Narrow Aisle
(NA) trucks operate in aisles of 8 to
10. This is primarily the domain of the
stand-up reach and double-deep reach trucks.
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Very Narrow
Aisle (VNA) trucks generally operate in
aisles of less than 6 and often use guidance
systems (wire, rail, optical) to travel within
the aisles. Standardized VNA vehicles consist
of man-up order selectors used to manually
handle less-than-pallet-load quantities and
man-up turret trucks used to handle unit loads
(man-up turret trucks can usually also perform
as order selectors).

Fork Equipment
Comparisons:
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Vehicle Type |
Space Utilisation |
Productivity |
Cost |
Flexibility |
| Standard
Wide Aisle Forklift |
Baseline |
   |
£ |
    |
| Narrow Aisle
Reach |
+20% to +25% |
  |
££ |
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| Narrow Aisle
Double Deep Reach |
-20% to +60% |
  |
££ |
  |
| VNA Turret |
+40% to +50% |
     |
££££££ |
  |
| VNA Swing
Mast or Bendi |
+35% to +45% |
   |
£££ |
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Need some
help:-
If you are considering new
automated or manual
warehouse
layouts, then why not call us first, by spending
just one working day with you we will be able to
establish and advise you on the best way forward.
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Link
to our other Warehouse Layout Web Pages: |
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Supply Chain Logistics
Consulting Ltd - The Chimes, 1 Park Rd, Congleton, Cheshire.
United Kingdom CW12-1DS
Mobile Tel No 0777-1973782 or Office Tel No 01260-276469
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