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Cofra 5

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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

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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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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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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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