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delivering the impact weight of 25 kg.
Outcomes: The cube did not exhibit any damage after either
the static or the impact test, thus satisfying the requirements
defined within the standards. In terms of the strength, durability,

and stability, the structure can therefore be characterised as
fully satisfactory.

Discussion
The testing procedures showed that when gliders are mounted,
the cube tends to partially yield to the applied force in that it
leans on the bottom edge of a structural board; nevertheless,
force, thus satisfying the stability requirements stipulated by total overturning does not occur, as already indicated above.
the standard ČSN EN 1022:2020. In this context, it is then somewhat problematic to determine

By extension, we also tested the strength and durability clearly whether the product conforms to the standards. If
of the structure, observing the Czech Republic standard ČSN tested without the gliders, however, the cube exhibits superior
EN 16139:2013 (Furniture—Strength, durability and safety— stability, satisfying all the requirements.
Requirements for non-domestic seating). The obtained results confirmed the structural strength of the
With respect to the modes of use presumed in the product, cube and also led to a modification of the glider mounting in
the selected procedures comprised applying a static load and response to the ambiguous overturning performance; presently,
an impact on the seating surface; both of the test schemes the gliders are embedded in countersunk seats and protrude

conformed to the provisions of the standard ČSN EN 1728:2020 beyond the surface line by two mm at the maximum.
(Furniture—Seating—Test methods for the determination of Another alteration lay in the gliders being fixed to their
strength and durability). seats with screws in place of the magnets used in the initial
versions.
Static Load Testing In furniture, a significant parameter rests in the carrying
Respecting the predefined procedural measures (as set out capacity. To verify this property, we first set up a standardised
in the standard ČSN EN 16139:2013, art. 6), we applied on stability test to load the seating surfaces with a weight of 600
the seating surface, in its relevant axis, the vertical load of N at a distance of 60 mm from the edge of a main structural
1300 N at the distance of 100 mm from the edge of the panel; such a configuration represents a force of 61 kg.

supporting structural board; the force acted on the surface The measurement process and its outcomes confirmed that
through a circular wood pad, invariably for 10 s, and the the product satisfies the requirements on children’s furniture
action was repeated 10 times.

Impact Testing
Conforming to the provisions set forth in the standards ČSN
EN 16139:2013 and ČSN EN 1728, we simulated a fall from

the height of 240 mm, repeating the process ten times. A
shock generating tool was employed to perform the action,