Surface Regularity Inspection and FM/DM Floor Certifications
We specialise in quality control and our unique surveying equipment – Profilometer
and deflection meters of SMG AXIOM 1155 enables us to measure flatness with
utmost precision and technology and pace. Our intuitive Excel Report Generator
gives you the ability to easily generate powerful 3D heat maps for any floor.
Free movement areas are those where trucks can travel in multi-directional paths.
These movement areas are considered less critical in terms of flatness and TR 34
sets out parameters on how an individual floor should be checked. The Free
Movement (FM) specification (TR 34) has 3 classifications for flatness within free
movement areas. These are FM1, FM2 and FM3 and all include the same properties
for flatness measuring.
Property II.
The 600mm change in slope (rate of change)
relates to the difference between two consecutive 300mm slope.
Property IV
States the difference in elevation between two
points on a 3m grid should not exceed a certain value depending
on the FM classification.
Defined movement
The defined movement specification (TR 34, 1994) has 3 classifications for flatness
within aisles. These are Super flat, Category 1 and Category 2 and all include the
same properties for flatness measuring.
Property I.
Controls the difference in level between two points separated by
300mm along each wheel track.
Property II.
The 600mm change in slope (rate of change) relates to the difference
between any 2 consecutive Property 1 readings.
Property III.
Controls the difference in level between two points separated by the
forklift truck’s wheeltrack. The values listed in the table of TR34 are
absolute and must not be confused with a deviation from a
horizontal plane.
| Floor Class |
Typical Floor Use |
E | F |
| FM1 |
Where very high standards of flatness and levelness are required.
Reach trucks operating at above 13m without side-shift. |
4.5 | 1.8 |
| FM2 |
Where very high standards of flatness and levelness are required.
Reach trucks operating at above 13m without side-shift. |
4.5 | 1.8 |
| FM3 |
Where very high standards of flatness and levelness are required.
Reach trucks operating at above 13m without side-shift. |
4.5 | 1.8 |
| FM4 |
Where very high standards of flatness and levelness are required.
Reach trucks operating at above 13m without side-shift. |
4.5 | 1.8 |
| NOTE: Side-shift is the ability of a truck to adjust the pallet transversely to the fork
direction. |
| Floor
Classification |
Racking Top
Beam Height |
Property Z SLOPE | Property
dZ |
Property
d2
Z |
Property
dX |
Property
d2
X |
| Calculation |
- |
mm per m | Z × Z SLOPE |
dZ × 0.75 |
Fixed values
2 × ZSLOPE × 1.1 |
Fixed values |
| DM1 |
Over 13m |
1.3 | Z × 1.3 |
Z × 1.0 |
2.9 |
1.5 |
| DM2 |
8–13m |
2.0 | Z × 2.0 |
Z × 1.5 |
4.4 |
2.0 |
| DM3 |
Up to 8m |
2.5 | Z × 2.5 |
Z × 1.9 |
5.5 |
2.5 |
Properties Measured
The following properties are defined in Figures 3.8–3.10 as follows:
Property Z: The transverse dimension between the centres of the truck front wheels, in m.
Property X: The longitudinal dimension between the centre of the front and rear truck axles. This is taken to be a fixed 2m.
Property ZSLOPE: The cross-aisle slope between the centres of the truck front wheels in mm/m.
Property dZ: The elevational difference in mm between the centres of the truck front wheels.
Property dX: The elevational difference in mm between the centre of the front axle and the centre of the rear axle.