Cornelius S - SITE LEVELLING; TRENCHES FOR BUTTRESS ASSEMBLIES

1) Drive a stake into the ground at points A and B respecting the
distance of the straight section between those two points (A-B).
2) Draw two half circles respecting the radius (R).
3) Join the two half circles with straight lines respecting the width
between these two lines (D).
4) Verify that the total length is consistent. (E)
5) Add 15cm (6”) wide trenches on each side, respecting the length
(F)
6) Remove all grass from the area you have just outlined.
SITE PREPARATION (continued)
1
SITE LEVELLING
2
A
B
A-B
R
R
D
15cm (6”)
E
F
POOL WALL
AREA TO OUTLINE
Figure 1.1
SITE LEVELLING
For an oval pool, the bottom must absolutely be levelled, using a
carpenter's level and a straight plank. Eliminate any protrusions.
Ensure that the surface is free of debris such as rocks, wood, etc.
TRENCHES FOR BUTTRESS ASSEMBLIES
1) Dig trenches to a depth equal to the thickness of the patio blocks
(2” thick slabs recommended) and the thickness of the buttress
assembly beam 8cm (3 1/4”).
(Refer to illustrations for trench layout details).
2) Make sure trenches are smooth and leveled without compacting
them.
3) Place and level patio blocks into trenches. Make sure that the
top of the slab is 8cm (3 1/4”) deep. Top of framework must be
level with pool area.
Chart: Sand quantity
8x14, 8x16, 8x19,
10x16, 10x 18
12x18, 12x24, 12x27, 13x17,
13x23,14x20, 14x25, 15x20
15x26, 15x31, 16x26,
16x32, 18x33
18x38, 18x44
141" - 358cm
22-3/4"
22-3/4"
10"
10"
10"
25cm
25cm
25cm
25cm
25cm
141" - 358cm
22-3/4"
22-3/4"
10"
10"
10"
25cm
25cm
25cm
25cm
25cm
FOR:
8x19: 12" (30cm)
10x21: 36" (91cm)
12x24: 60" (152cm)
13x23: 72" (183cm)
14x25: 84" (213cm)
15x26: 96" (244cm)
16x26: 108" (274cm)
22-3/4"
22-3/4"
58cm
58cm
58cm
10"
10"
3-1/4" - 8cm
DEEP
15cm
31"
79cm
22-3/4"
22-3/4"
58cm
58cm
58cm
10"
10"
3-1/4" - 8cm
15cm
6"
31"
79cm
122cm
6"
15cm
6"
58cm
48"
6"
15cm
43cm
58cm
48"
17"
6"
15cm
R
A-B
R
Trenches for patio blocks
Soil/pool area
Trenches for patio blocks
Soil/pool area
10"
10"
10"
22-3/4"
22-3/4"
75-1/2" - 192cm
3-1/4" - 8cm
DEEP
15cm
25cm
25cm
25cm
6"
15cm
31"
79cm
FOR:
8x14: 12" (30c
m
8x16: 12" (30c
m
10x16: 36" (91c
m
10x18: 36" (91c
m
12x18: 60" (152
c
13x18: 72" (183
c
14x20: 84" (213
c
15x20: 96" (244
c
10"
10"
10"
22-3/4"
22-3/4"
75-1/2" - 192cm
3-1/4" - 8cm
15cm
25cm
25cm
25cm
6"
15cm
6"
43cm
31"
79cm
58cm
58cm
17"
48"
122cm
6"
15cm
R
A-B
R
15cm
3-1/4" - 8cm
DEEP
6"
79cm
15cm
FOR:
12x27: 60" (152cm)
15x31: 96" (244cm)
16x32: 108" (274cm)
18x33: 132" (335cm)
3-1/4" - 8cm
122cm
6"
79cm
31"
17"
31"
48"
6"
15cm
43cm
206-1/2" - 525cm
22-3/4"
22-3/4"
22-3/4"
58cm
22-3/4"
58cm
10"
10"
10"
10"
10"
25cm
25cm
25cm
25cm
25cm
25cm
206-1/2" - 525cm
22-3/4"
58cm
22-3/4"
22-3/4"
22-3/4"
58cm
22-3/4"
58cm
10"
10"
10"
10"
10"
25cm
25cm
25cm
25cm
25cm
25cm
10"
10"
22-3/4"
22-3/4"
58cm
58cm
58cm
25cm
10"
10"
58cm
22-3/4"
58cm
58cm
25cm
58cm
6"
15cm
R
A-B
R
Trenches for patio blocks
Soil/pool area
15cm
3-1/4" - 8cm
DEEP
6"
79cm
15cm
FOR:
18x38: 132" (335cm)
3-1/4" - 8cm
122cm
6"
79cm
31"
17"
31"
48"
6"
15cm
43cm
272" - 691cm
22-3/4"
22-3/4"
22-3/4"
58cm
22-3/4"
58cm
10"
10"
10"
10"
10"
25cm
25cm
25cm
25cm
25cm
25cm
22-3/4"
58cm
22-3/4"
22-3/4"
10"
10"
10"
25cm
25cm
25cm
22-3/4"
58cm
10"
25cm
22-3/4"
58cm
10"
25cm
25cm
10"
10"
22-3/4"
22-3/4"
58cm
58cm
58cm
25cm
10"
10"
58cm
22-3/4"
58cm
58cm
25cm
58cm
6"
15cm
R
A-B
R
Trenches for patio blocks
Soil/
p
ool area
15cm
3-1/4" - 8cm
DEEP
122cm
6"
79cm
15cm
FOR:
18x44: 132" (335cm)
3-1/4" - 8cm
6"
79cm
17"
31"31"
48"
6"
15cm
43cm
337-1/2" - 857cm
22-3/4"
22-3/4"
22-3/4"
58cm
22-3/4"
58cm
10"
10"
10"
10"
10"
25cm
25cm
25cm
25cm
25cm
25cm
22-3/4"
58cm
22-3/4"
22-3/4"
10"
10"
10"
25cm
25cm
25cm
22-3/4"
58cm
10"
25cm
22-3/4"
58cm
10"
25cm
22-3/4"
58cm
10"
25cm
22-3/4"
58cm
10"
25cm
25cm
10"
10"
22-3/4"
22-3/4"
58cm
58cm
58cm
25cm
10"
10"
58cm
22-3/4"
58cm
58cm
25cm
58cm
6"
15cm
R
A-B
R
Trenches for patio blocks
Soil/pool area