FR
5.2.1
Each
platform shall be rigid and horizontal.
FR
5.2.2
The
minimum dimensions of the platform shall be:
0.6m
to 1.0m platform 0.6m width 5.0m length
2.6m
to 3.0m platform 0.6m width 5.0m length
(preferred
1.5m)
5.0m
platform 1.5m width 6.0m length
7.5m
platform 1.5m width 6.0m length
10.0m
platform 3.0m width 6.0m length
On
10m platforms, with a width of less than 3m, only the
handrails one ach side for a distance of at least 3.0m
back from the front edge of the platform may be shaped
as detailed below. It is recommended that an easily
removable section of handrail be included for general
use, which can be removed for synchronised diving (see
diagram).
FR
5.2.3
The
preferred thickness of the front edge of the platform
shall be 0.2 metre but not exceeding 0.3 metre, and
can be vertical or inclined at an angle not greater
than 10° to the vertical inside the plummet line.
FR
5.2.4
The
surface and the front edge of the platform shall be
covered throughout with a resilient non-slip surface.
The two
surfaces
shall be covered separately in order to achieve clean
90° angle or as described in FR 5.2.3.
FR
5.2.5
The
front of 10.0 metre and 7.5 metre platforms shall project
at least 1.5 metres beyond the edge of the pool. For
2.6 metre - 3.0 metre and 5.0 metre platforms a projection
of 1.25 metres is acceptable, and for 0.6 metre - 1.0
metre platforms a projection of 0.75 metre is acceptable.
FR
5.2.6
Where
a platform is directly underneath another platform the
platform above shall project a minimum of 0.75 metre
(preferred 1.25 metres) beyond the platform below.
FR
5.2.7
The
back and sides of each platform (except a 1.0 metre
platform) shall be surrounded by handrails with a minimum
clearance of 1.8 metres between pairs. The minimum height
shall
be 1.0 metre and they shall be with at least two crossbars
placed outside the platform beginning 0.8 metre from
the front edge of the platform.
FR
5.2.8
Each
platform shall be accessible by suitable stairs (not
ladders).
FR
5.2.9
It
is preferable that a platform is not constructed directly
under any other platform.
FR
5.2.10
Requirements
for the supporting structure. For platforms and supporting
structure of the springboards the design load is p =350
kiloponds (kilograms force) per lineal metre. In addition
to the static requirements and for the comfort and safety
of the user with respect to the movement of the towers,
the following limits shall be observed, with respect
to the platforms and springboard supports. Fundamental
frequency of platforms 10.0 Hz Fundamental frequency
of tower 3.5 Hz Oscillation of total structure 3.5 Hz.
The spatial deformation of the front edge of the platforms
as a result of Px = Py = Pz = 100 kiloponds (kilograms
force) shall be a maximum of 1 mm (see drawing). These
requirements can be met most adequately by a reinforced
concrete structure. The proof of the dynamic behaviour
is to be provided together with the static calculations
for the whole structure.
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