When heavy tracked vehicles are to be loaded, and circumstances permit, a wider ramp may be used
which is built on the same principle as that laid down in paragraph 5.d.(2) and (3) above.
Drawing 14 shows the disposition of the first layer of a wider ramp.
The characteristics of the wider ramp is that the tracks of the heavy armoured vehicles have a gangway
formed by three sleepers laid side by side instead of two.
6. Strengthening in the Event or Permanent Use.
When a ramp is assembled for permanent use, it is necessary to verify its assembly and the stability of the
sleepers and, if necessary, to correct their alignment, before and during use.
The assembly can also be strengthened by appropriate lashing; the use of timber dogs has proved unnecessary,
as the resilience of the wood and the pressure exerted on them inevitably cause them to be forced out. In order
that the ramp may retain all its elastic properties, whilst preventing lateral collapse, the lashing may be carried
out as illustrated in Drawing 15:
Each of the sleepers of the outside rows of the odd layers has one end lashed to the sleeper of the
layer immediately below and the other end lashed to the sleeper of the later immediately above.
The sleepers of the intermediate rows of these odd layers have their centres lashed to a sleeper of
the layer immediately above.
The ramp is stabilised by lashing two by two the transverse sleepers of even layers.
The sleepers of all layers forming on either side of the flooring a type ox stairway, are lashed two by
However, the sleepers of the 9th layer and the flooring (Drawings 11 and 12) are lashed by their
extremities to the sleepers supporting them.
The lashing shall be effected in such a way that the tracks of the armoured vehicles do not harm the wire.
Only flexible wire will be used.
Change 4 Z-5