Earthworks - BWT P-PSC Notice D'installation Et Conseils D'utilisation

3.

EARTHWORKS

TRACING OUT THE POOL
A
B
Arc traced from B
D
Arc traced from A
C
Arc traced from A
Arc traced from B
1-TRACING OUT THE POOL
Add 1.60m to the two pool dimensions and plant 4 stakes at the new measurements obtained:
Plant two stakes (A and B) to mark the length of the excavation, (refer to the excavation diagram
above: Tracing out the pool).
Using A and B as pivot points and the diagonal and width as the radii, trace 4 arcs to establish
the position of C and D as illustrated above. Check that the distance C. D. is equal to the distance
A. B. Run mason's string around the stakes and use this as a guide to mark out the excavation in
plaster.
NOTE:
It is possible to excavate more precisely, digging out around the supporting braces. This requires a
good working knowledge of the installation of P-PSC pools. Refer to the POOL CONFIGURATION
diagrams.
2 - FIRST EXCAVATION
Dig out a flat bottomed hole to the depth of the shallow end (or the pool depth if it has a flat base),
plus the depth of the underslab (base course + concrete).
3 - MARKING OUT THE POOL
Next, check that the base of the excavation is horizontal and that the depth is correct (either
using a builder's level and a meter stick, or using a stick three meters long and a spirit level).
Mark out the pool by planting 4 corner stakes at the exact corner positions of the pool. Check
squaring (the length of the two diagonals should be equal). Run string around the stakes and use
this as a guide to trace the perimeter of the pool in plaster.
Note: For flat base pools excavation is now complete. Skip to the section entitled
Underslab.
At this stage, refer to the excavation diagram and mark out the dimensions indicated on the
diagram according to the pool type.
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2020/05 - Indice de révision : B - Code : 37101 PISCINES P-PSC