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Cofra 5
EC4
FULL OUTPUT
Note: Section designed according to EN1994-1
Construction stage
Composite slab
Fire resistance
Note: Check imperatively whether the assumptions comply with project specifications and projectplan.
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
0.2
0.27
0.12
0.38
0.34
-1
0.46
0.64
-1
-1
0.36
0.42
0.49
-1
-1
-1
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Cofra 5
EC4
33.7
58
mm
Values
Profile Data:
kN/mEnd support reaction resistance of profile
cm4/m
Cross-sectional area of profile
22.18
Empirical factor for design shear resistance (m)
mm
3.92, 4.8
20.72, 32.36
mm/m
N/mm
Sagging resistance moment of profile
0.75
mm
Self-weight of profiled steel sheeting
Effective width of profile
Empirical factor for design shear resistance (k)
a.
Thickness of profiled steel sheeting
N/mm
Characteristics
Second moment of area of the profile
-0.06
Reduction of concrete
mm
Height of profile
Unit
cofraplus60 / 0.75mm / noperce
0.1
mm
1035
902
kN/m
kg/m
4.21
230.09
Maximum internal reaction resistance of profile
Maximum hogging resistance moment of profile
Position of neutral axis of profile
kNm/m
44.57
Longitudinal shear strength of a composite slab
35
8.53
kNm/m
Internal support widths 60, 160 kN/m
3
b.
2.8 0
130
(mm)
0Span (m)
Static system:
5
Composite slab
0
isostatique
4
(mm)
Screed:
0
Spans:
Span
Overall slab depth:
2
70
1
Project Data1.
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Cofra 5
EC4
Span
Note: for N>0, prop must be placed at 1/(N+1) of span
Number of props/span:
1
0
51
4
1
01
2
c.
Steel sheet
0
4
Construction stage
0
2
0
00Number spans
0
3
Number props
5
Number of spans / steel sheet:
3
Prop width:
End support width:
Internal support width:
(mm)
(mm)
(mm)80
75
75
d. Reinforcement data
Ductility class:
Exposure class: XC2
500Yield strength:
C
S4Structural class:
(mm)Minimum cover: 35
Overall mesh: 114GQ283 Cover: 40 (mm)
114GQ283Reinforcement on support: 35 (mm)
114GQ283Repartition mesh: 10 (mm)
6 in each rib 40 (mm)
Note: overall mesh shall be continuous on support
Reinforcement in the rib: Cover:
Cover:
Cover:
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Cofra 5
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e. Concrete data: normal / NC25/30
Concrete dry self weight
Fck 25
25Concrete wet self weight
24
2.6FctmN/mmEcm 31000
kN/m
kN/m
N/mm
N/mm
f. Project requirements
Deflection limit during construction
Deflection limit in service 300
partielleShear bond method
180
0.2Crack control
Coefficient of moment redistribution 0
L /
L /
Wmax
Fire resistance period 30
Fire factor
Minimum frequency
0.5Coefficient mass related to live load (frequency)
3
0.5
REI
g. Loads acting on slab
52 3
5
Span 1
Permanent loads gper (kN/m)
4
Uniformly distributed load-
2Live load q (kN/m)
- Line loads perpendicular to deck span
Note: Any line load is considered
- Punctual loads
Note: Any concentrated load is considered
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- Mobile axle load
Note: Any mobile load is considered
h. Partial safety factor
Steel sheet 1.1
Material Actions
1.35Perm. load
1.5Live load1.15Rebars
1.5Concrete
1.25Shearing
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Longitudinal section and cross-section2.
[Image not available]
Cross section
Profile: cofraplus60 / 0.75mm / noperce
0
L3 (m) L5 (m)L2 (m)
02.8
L4 (m)
0 0
L1 (m)
S0Anti-cracking mesh
6 in each rib
114GQ283Reinforcement on support
114GQ283
S3 114GQ283Repartition mesh
S1S2Reinforcement in the rib
mm
mm
mm
Slab depth
35
Cover anti-cracking mesh 40
Cover repartition mesh e3
Profile height
mm
mm
mm
e0
Cover reinforcement in the rib
ht 130
10
40
e1e2
Cover reinforcement on support
58hp
[Image not available]
Longitudinal section
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Details EN3.
IMPLEMENTATION OF THE COMPOSITE DECK: Supports, props, fasteners, openings, etc. ... shallcomply with the rules of Art, the guidance in "Prescription of technical requirements - CPT" and invarious documents of ArcelorMittal Construction
CONCRETE: The implementation of concrete by pump is recommended. Otherwise, the concretemust be poured on the bearing elements without excessive accumulation, and immediately leveled tothe depth planned.
Consumption of concrete
Total weight of the slab
Reinforcement on support
Repartition mesh
Litres/m
Kg/m
Kg/m
Kg/m
95
246.03
0
0
Reinforcement in the rib Kg/m1.07
Overall mesh 0 Kg/m
Note: The quantity above are given for information, more accurate values can be calculated takinginto account real conditions of the implementation on site.
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