Cross-sectional values for cross-laminated timber with fictitious build-ups – Ceilings and roofs
Designation Build-up
I
0,
net
W
0,
net
S
R,net
A
R,
I
0,
ef
/
ref
)/(
2,00m 3,00m 4,00 m 5,00m 6,00m 7,00m
[cm
4
]
[cm
3
]
[cm
3
]
[cm
2
]
[cm
4
]
[–]
XLAM
30l–20w–30l–
15.675 2.412
1.500
1.567
11.990 13.778 14.546 14.932 15.151 15.287 0,193
130 C5s
20w–30l
86%
65%
75%
79%
82%
83%
83%
XLAM
30l–30w–30l–
22.275 2.970
1.800
1.856
15.186 18.422 19.924 20.709 21.163 21.447 0,184
150 L5s
30w–30l
79%
54%
65%
71%
74%
75%
76%
XLAM
40l–20w–40l–
30.400 3.800
2.400
1.900
21.680 25.741 27.580 28.529 29.074 29.414 0,208
160 L5s
20w–40l
89%
64%
75%
81%
84%
85%
86%
XLAM
40l–20w–40l–
74.196 6.739
4.800
2.319
43.594 56.360 62.921 66.530 68.676 70.042 0,217
220 L7s
20w–40l–20w–40l 84%
49%
64%
71%
75%
77%
79%
XLAM
30l–30l–30w–40l– 80.933 7.358
4.800
2.529
42.978 57.680 65.856 70.550 73.412 75.260 0,188
220 L7s2
30w–30l–30l
91%
48%
65%
74%
80%
83%
85%
Cross-sectional values for cross-laminated timber with fictitious build-ups – Walls
Designation Build-up
A
0,
net
I
0,
net
W
0,
net
S
R,net
A
R,
I
0,
ef
[cm
4
]/
i
0,
ef
[cm]/ [–]
)/(
I
net
ref
I
brut
[cm
2
]
[cm
4
]
[cm
3
]
[cm
3
]
[cm
2
]
2,50m 2,95m 3,00m 4,00m 5,00m 6,00m
[–]
XLAM
30l–30w–30l
600
5.850 1.300 900
975
5.120 5.305 5.321 5.539 5.647 5.707 0,155
90 C3s
2,92
2,97
2,98
3,04
3,07
3,08
96%
86
99
101
132
163
195
XLAM
40l–40w–40l
800
13.867 2.311 1.600 1.300 11.083 11.737 11.796 12.613 13.035 13.277 0,155
120 C3s
3,72
3,83
3,84
3,97
4,04
4,07
96%
67
77
78
101
124
147
XLAM
30l–40w–30l
600
7.800 1.560 1.050 1.114
6.532 6.843 6.871 7.247 7.436 7.543 0,152
100 C3s
3,30
3,38
3,38
3,48
3,52
3,55
94%
76
87
89
115
142
169
XLAM
30l–20w–30l–
900
15.675 2.412 1.500 1.567 13.088 13.722 13.778 14.546 14.932 15.151 0,193
130 C5s
20w–30l
3,81
3,90
3,91
4,02
4,07
4,10
86%
66
76
77
99
123
146
XLAM
30l–30w–30l–
900
22.275 2.970 1.800 1.856 17.130 18.314 18.422 19.924 20.709 21.163 0,184
150 C5s
30w–30l
4,36
4,51
4,52
4,71
4,80
4,85
79%
57
65
66
85
104
124
Fictitious element build-ups
used in the guideline with
cross-sectional values for
dimensioning of elements
subjected to bending according
to Chapters
5
and
6
of the
present guideline.
The element build-ups above are
fictitious and were defined indepen-
dently of respective manufacturers.
The tables represent a possible listing
of the cross-sectional values for
dimensioning according to the
present guideline. For manufacturer-
related build-ups and corresponding
cross-sectional-values, please
contact one of the manufacturers.
A
0,
net
Net area – in the direction of the top layers in cm
2
I
0,
net
Net moment of inertia – in the direction of the top layers in cm
4
W
0,
net
Net section modulus – in the direction of the top layers in cm
3
S
R,net
Net static moment – in the direction of the top layers in cm
3
A
R,
Ð Equivalent area for determination of the decisive rolling
shear stress in cm
2
I
0,
ef
Effective moment of inertia – in the direction of the top layers in cm
4
i
0,
ef
Effective radius of inertia – in the direction of the top layers in cm
ref
Reference length or buckling length in m
Slenderness (no unit)
)/(
Shear correction factor for calculation as a transversally
shear-flexible element (no unit)
