User Information
Dokaflex
30
tec
Structural design
17
999803902 - 06/2014
Table 2: Dokaflex
30
tec
These values only apply when a Lowering head, 4-way head or Supporting head is used.
1)
In accordance with EN 12812, this allows for a service load of 0.75 kN/m
2
and a variable load of 10
%
of
a
massive
concrete
floor-slab,
totalling
at least 0.75 kN/m
2
but no more than 1.75 kN/m
2
(assuming a unit weight of 2500
kg/m
3
for the fresh concrete ). Mid-span deflection has been
limited to l/500.
In the case of cavity flat-slab floors, significantly lower slab loads occur.
Slab thickness
[cm]
Slab load
1)
[kN/m
2
]
Max. permitted spacing of primary beams b
[m] for a secondary-beam spacing
c
[m] of
Prop load
[kN]
Max. permitted prop spacing
a
[m] for selected prop load
and a selected primary-beam spacing
b
[m] of
0.33
0.50
0.625
1.50
2.00
2.44
2.50
3.00
16
5.7
3.67
3.20
2.97
25
2.49
2.18
1.79
1.75
1.46
30
2.49
2.27
2.12
2.10
1.75
35
2.49
2.27
2.12
2.10
1.98
40
2.49
2.27
2.12
2.10
1.98
18
6.2
3.54
3.08
2.86
25
2.40
2.01
1.65
1.61
1.34
30
2.40
2.18
1.98
1.93
1.61
35
2.40
2.18
2.04
2.03
1.88
40
2.40
2.18
2.04
2.03
1.91
20
6.7
3.43
2.98
2.77
25
2.33
1.86
1.53
1.49
1.24
30
2.33
2.11
1.83
1.79
1.49
35
2.33
2.11
1.98
1.96
1.74
40
2.33
2.11
1.98
1.96
1.85
22
7.2
3.33
2.90
2.69
25
2.26
1.74
1.42
1.39
1.16
30
2.26
2.05
1.71
1.67
1.39
35
2.26
2.05
1.92
1.90
1.62
40
2.26
2.05
1.92
1.90
1.79
24
7.7
3.24
2.82
2.61
25
2.17
1.63
1.33
1.30
1.08
30
2.20
1.95
1.60
1.56
1.30
35
2.20
2.00
1.87
1.82
1.52
40
2.20
2.00
1.87
1.85
1.68
26
8.2
3.15
2.75
2.55
25
2.04
1.53
1.25
1.22
1.02
30
2.14
1.83
1.50
1.47
1.22
35
2.14
1.95
1.75
1.71
1.43
40
2.14
1.95
1.82
1.81
1.58
28
8.7
3.08
2.68
2.49
25
1.92
1.44
1.18
1.15
0.96
30
2.09
1.73
1.42
1.38
1.15
35
2.09
1.90
1.66
1.62
1.35
40
2.09
1.90
1.78
1.76
1.49
30
9.2
3.01
2.62
2.44
25
1.82
1.37
1.12
1.09
—
30
2.05
1.64
1.34
1.31
—
35
2.05
1.86
1.57
1.53
—
40
2.05
1.86
1.73
1.69
—
35
10.5
2.87
2.50
2.32
25
1.59
1.19
0.98
0.95
—
30
1.91
1.43
1.17
1.14
—
35
1.95
1.67
1.37
1.33
—
40
1.95
1.77
1.51
1.48
—
40
11.8
2.75
2.39
2.22
25
1.41
1.06
0.87
0.84
—
30
1.69
1.27
1.04
1.01
—
35
1.86
1.48
1.21
1.18
—
40
1.86
1.64
1.34
1.31
—
45
13.2
2.64
2.30
2.14
25
1.26
0.95
0.78
0.76
—
30
1.52
1.14
0.93
0.91
—
35
1.77
1.33
1.09
1.06
—
40
1.79
1.47
1.20
1.18
—
50
14.5
2.55
2.22
2.06
25
1.15
0.86
0.70
0.69
—
30
1.38
1.03
0.85
0.83
—
35
1.60
1.20
0.99
0.96
—
40
1.73
1.33
1.09
1.07
—
60
17.2
2.41
2.10
1.93
25
0.97
0.73
—
—
—
30
1.16
0.87
—
—
—
35
1.35
1.02
—
—
—
40
1.50
1.12
—
—
—
70
19.9
2.29
1.99
1.77
25
0.84
0.63
—
—
—
30
1.00
0.75
—
—
—
35
1.17
0.88
—
—
—
40
1.30
0.97
—
—
—
80
22.4
2.19
1.89
1.57
25
0.74
0.56
—
—
—
30
0.89
0.67
—
—
—
35
1.04
0.78
—
—
—
40
1.15
0.86
—
—
—
90
24.9
2.11
1.77
—
25
0.67
0.50
—
—
—
30
0.80
0.60
—
—
—
35
0.94
0.70
—
—
—
40
1.04
0.78
—
—
—
100
27.3
2.04
1.61
—
25
0.61
—
—
—
—
30
0.73
0.55
—
—
—
35
0.85
0.64
—
—
—
40
0.95
0.71
—
—
—
—
Prop spacing < 0.50m or primary beams too widely spaced
