Mountfield AZURO 240 Notice De Montage Et D'utilisation page 21

STEP B – PREPARATION OF THE SWIMMING POOL BASE
Important: The area under the swimming pool must fulfi l the following basic conditions:
It must be horizontal. i.e. having the tolerance of maximum 2,5 cm related to the transverse dimension of
the swimming pool.
It must be provided with a thin layer of sieved sand, i.e. that sand shall level small uneven places on
the ground, which emerged after the tools (a mattock, spade.... ) had been used, and shall cover the
whole ground of the swimming pool with a layer not higher than 2 cm at most.
It must be compacted, i.e. so solid that a man , having the weight of minimum 80 kg, should not mark
visible footprints on the ground.
Diameter pool
2,4 m
3,6 m
4,6 m
1. MARK OUT THE AREA
a. Pitch a pin to the ground in the intended centre of the SP (see Fig. 2-1)
b. Tie up the rope at its one end to the peg. Secure a can with sand or lime, fl our, etc. to its other end
with which you will then mark a circle on the ground.
For the length of the rope see the table for the respective diameter.
Base radius shall exceed the pool radius by 15 cm (see Fig. 2-2)
2. REMOVE TURF
a. Carefully remove all turf and plants from the encircled area (see Fig. 2-3).
b. Remove all branches, stones and roots from the encir- cled area.
3. ADAPT THE MARKED OUT AREA IN A WAY TO HAVE IT HORIZONTAL, FLAT AND COMPACTED
Remember: Your SP must be positioned horizontally. Take your time to make the base perfectly horizon-
tal. Any deviation from the horizontal plane must not be more than 25 mm Replace the peg with a pole
with a fl at upper end, cross section approx. 25 x 25 cm, length approx. 15 cm. Pitch the pole to the earth
so that its upper surface was at the same level as the ground (see Fig. 2-4).
b. Take a balk sized 5 cm x 10 cm in its cross-section. Its length shall depend on the pool size (see the
table above). Nail one end of the balk to the post top. Use a nail which is long enough to be able to
hold the balk end on the post while you are moving the balk round to make a circle (see Fig. 2-5).
c. Place a level on the timber and circle around the post to fi nd out
raised points and depressions. (see Fig.2-6)
d. Remove all the raised points with shovel, hoe or rake. Remember, your pool must be in level with the
allowed tolerance of 25 mm across the pool, (see Fig. 2-8).
e. Do not fi ll up the depressions, (see Fig. 2-7.) Filling up will not create a safe base for your pool. Small
openings may be fi lled but in such a case, the fi lling soil must be well trodden with a rammer.
f. To make sure the pool will remain stable in the future; fi rm the pool's base with the rammer. Non-com-
pacted base could set lower under pressure of fi lled pool and cause brake down of the pool. Fill up
the newly emerging depressions and tread with the rammer.
Aid: Take a walk across the surface. No footprints may be seen on the surface if compacted properly.
Line length Prism length
140 cm 140 cm
200 cm 200 cm
250 cm 250 cm
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EN