Issue: June 2005 Section D – Rack Erection Tolerances Page D.1
SECTION D – RACK ERECTION TOLERANCES
HI280 is a hand loaded shelving system, which will generally be used in applications where it can
be accessed either direct from floor level, or via small steps. However it also has the ability to be
built to heights of 12,000mm, where it will be operated by “man-up” type order picking trucks. It
must be stressed that when used with trucks, the actual interface should still be hand operated, as
HI280 is not a pallet racking system.
It is therefore important to select an appropriate standard for installing the racks, that meet the
requirements of the application. These standards will be specified by the rack designer.
However the minimum standard that the frames must be assembled and installed to is 1/350
both across and down the aisle. (i.e. a 3500mm frame must be installed within 10mm of
plumb).
FEM 10.3.01 is a comprehensive document published by FEM and deals with the subject of
“Tolerance, Deformations and Clearances” for Adjustable Beam Pallet Racking.
These pages summarise that document and how it relates to this type of shelving.
The document details four groups of tolerance, each based on a style or classification of handling
equipment. The two main groups that apply are Classes 400 and 300A.
Class 400 Wide aisle installations using counter balanced fork lift trucks or reach trucks.
Class 300 A Class A – Narrow aisle installations where the operator is raised and lowered
with the unit load.
These tolerances are measured prior to loading.
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