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ArcelorMittal Construction Belgium Cofraplus 77 Kerkhotel Patershof, Mechelen (B)

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Page 1: Cofraplus 77 - ArcelorMittal · 3 Further advantage The COFRAPLUS 77 is manufactured with a pre-coating, and consequently it is easy to provide the floor with the underface already

ArcelorMittal Construction Belgium

Cofraplus 77

Kerkhotel Patershof, Mechelen (B)

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2Picture on cover : Building : Zenith of Rouen – Achitect : B. TSCHUMI Picture here above : Doha Tour - Quatar

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Table of contents

1• Introduction .......................................................................................................................................................................................... 2

2• Bearing structures ................................................................................................................................................................................ 4

3• Stages of shuttering and concreting .............................................................................................................................................. 8

4• Characteristics of the finished floor ..............................................................................................................................................12

5• Cofraplus LS ........................................................................................................................................................................................13

6• Load span tables .................................................................................................................................................................................14

7• Physical characteristics .....................................................................................................................................................................20

8• Calculation notes ................................................................................................................................................................................21

9• Renovation ............................................................................................................................................................................................22

10• Handling, packing and storage ......................................................................................................................................................23

11• The order ...........................................................................................................................................................................................24

12• Request form ...................................................................................................................................................................................25

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IntroductionTHE USE OF COFRAPLUS 77 IN THE CONSTRUCTIONThe composite construction is defined as a technique using several materials which are interrelated and which act as a solid element under the action of external forces/loads.

The composite floor is a product which arises from the various elements : it shows, indeed, a close interrelation between the properties of steel with those of the concrete.

This relates to a profiled steel sheet, which, in the first instance, is used as permanent shuttering (able to support fresh concrete and superimposed weights of construction, whilst providing a useful working surface). Then this sheet is combined structurally with hardened concrete and totally, or in part, replaces the lower reinforcement steel bars.

A mixed action is defined as that which exists when the concrete is combined with the sheet steel profile, and the additional bonding which occurs with the hardened concrete to form a single structural element.

WHY IS IT NECESSARY TO CONSIDER THE COFRAPLUS 77 ?It is a product which undoubtedly offers economical solutions to floor construction. Indeed, it offers a pre-(fabricated)profiled element, very light in weight (9.54kg/m2 with a thickness of 0.75mm) where fixing is extremely simple. Moreover, it can be used by the General Contractor himself if he wishes.

It is to be noted that, given good stacking, this product is very economical to transport (more than 1500m2 per lorry) and permits storage with the minimum amount of inconvenience. Handling on site benefits from the same advantages, and the erection is carried out with such a speed that it does not need to be compared to any other system (easily 400m2 in 8 hours by a team).

The sheet, therefore, forms an integral part of the construction and thus constitutes a working platform : being a permanent element, there is no removal required. Its installation can be carried out independently of weather conditions. The sheet can be positioned without temporary

supports up to 3 metres, and more according to the required thicknesses of the concrete and the thickness of the sheet used.

In comparison to traditional methods, one uses a smaller volume of concrete and permits savings in dead weight. This gain in terms of weight is equally matched by economies in structural support and foundations.The lightness of the composite floor can be optimized by using a light structural concrete made up of expanded aggregates of clay. (Argex)

A real asset of the COFRAPLUS 77 : it avoids the lower reinforcement steel bars and permits an adhesion of steel and concrete of a very high level, thanks to its system of embossing. Furthermore, this product easily permits the incorporation of channels, electric and telephone cables, etc. One can also use this type of floor as a diaphragm.

Furthermore, the form of the floor is planned to facilitate the use of connectors which allow an economical design of the supporting structure.

The simple adhesion between the steel sheet and the concrete is not considered suitable for the mixed action of the floor. That is why the COFRAPLUS 77 is designed with bosses in the vertical parts of the profile to ensure a positive fixing of the steel with the concrete.

cofraplus 77Introduction

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Further advantageThe COFRAPLUS 77 is manufactured with a pre-coating, and consequently it is easy to provide the floor with the underface already painted, thus forming a finished ceiling.

DimensionsThe characteristics of the floor are obtained at the start of official tests and the measurement is easily obtained thanks to very simple tables of use which will be found later in the brochure. For complete dimensions, don’t hesitate to contact our technical department.

Fields of useThe use of profiled sheets in the construction of concrete floors constitutes an important and considerable innovation. It permits substantial savings al the way through the construction programme in more and more areas of work:- industrial buildings- Office blocks- Commercial areas- terraces- hospitals- residential buildings- renovations

The productThe COFRAPLUS 77 is a rigid floor which permits considerable spans without temporary support, and which, thanks to its system of embossing, assures a good adhesion between steel and concrete. This product is available in the following thicknesses: 0.75mm, 0.88mm, 1.00mm.

Raw materialAll the floors of the ARVAL by ArcelorMittal range are manufactured

in the first instance, of galvanised steel. They can be supplied pre-coated, if specified by the client.

Basic steel The basic steel is a non alloyed construction steel conforming with S320 GD, whose minimum guaranteed limit of longitudinal elasticity is 320N/mm2. It complies with the following quality standards:NBN A 23-202 Fe E 320 ASTM A 446 Grade D NF A 36-322 C320 EURONORM 147-79 Fe E 320 DIN 17162 St E 320In respect of the thickness, it is to be noted that it is always measured including the galvanised base, and that a tolerance of +/- 10% is acceptable, according to the standards.

Galvanised steelThe galvanised coating is obtained by the Sendzimir process, that is to say, by continuous immersion of the steel sheet in a ‘hot bath of zinc’. Unless otherwise specified, the type of coating is Z275, corresponding to 1.25 OZ or 275gr/m2 minimum in total on two faces, as the following standards: NBN A 23-202, EURONORM 147-79, ASTM 525, DIN 17162, NF A 36321, BS 2989. The average thickness in theory is of the order of 20 microns for a Z275 which represents the standard commercial quality. The use of ALUZINC is incompatible with the concrete.

Pre-coated steel for interior useWhen the interior face of the floor is visible, one can provide a pleasing aesthetic aspect by using a pre-coated steel for interior use. It consists of a galvanised steel coating (Sendzimir process) on one face, and a polyester coating of 12 or 15 microns, and on the other face, a similar coating of a thickness of at least 8 microns.

Compaq European Logistic Center [Gorinchem - NL]

82 110

192 768 54

77

cofraplus 77 Introduction

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cofraplus 77Bearing structures

The use of ALUZINC is incompatible with the concrete.

Bearing structures1. METALLIC SUPPORT

The composite floor is adapted to all support structures.

2. WOODEN SUPPORT (*)

End support Intermediate support with interrupted steel sheet without overlap

Intermediate support with interrupted steel sheet and overlap

Intermediate support with continuous steel sheet

* The realisation of laying details on metal support is also possible in every other types of supports.

Thickness (mm) Weight (kg/m2) Height (mm) working width (mm) Steel section (cm2/m) efficient inertia (cm4/m)*

0,75 9,54 77 768 12,16 100,240,88 11,20 77 768 14,27 118,601,00 12,73 77 768 16,21 135,50

* This inertia has been calculated according to the European standards.

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cofraplus 77 Bearing structures

"Madou tower" • Arch ASSAR/ ARCHI2000 • Contractor: STRABAG - HERPAIN

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cofraplus 77Bearing structures

3. CONCRETE SUPPORT, BLOCKS, BRICKS (BEARING WALLS) (*)

4. USE OF THE CONCRETE SLAB AS A COMPRESSION ELEMENT

a) Metallic supportThe use of connectors permits the formation of a continuous beam0 and optimises the supporting structure. The connectors are therefore elements which assure the fixing between the steel and the concrete. They have the function of transmitting the stress between the beam and the concrete slab.

Two types of connectors can be used :

1. Welded stud shear connectorsTo weld the studs across the sheet on the support, the upper seam of the beam has not got to be painted, and must be clean and dry. The trapezoidal section must be in perfect contact with the beam. We can foresee pre-punched holes in the sheet when studs are not welded on site.

2 Riveted connectorsIt consists of a metal piece, cold-formed into a L shape, fixed to the beam by means of 2 rivets, put into place by direct fixing by means of a rivet gun.

* The realisation of laying details on metal support is also possible in every other types of supports.

Welded connectors on the support across the sheet

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cofraplus 77 Bearing structures

"Parking GlaxoSmithKlein (Rixensart)"

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cofraplus 77Stages of shuttering and concreting

b) concrete supportOn concrete beams, it’s possible to pour a first phase of concrete, till the level of the steel sheet. Afterwards, thanks to the waiting steel bars, one can pour the last phase of concrete and have a T beam.

Stages of shuttering and concreting

The COFRAPLUS 77 is a trapezoidal sheet which has all the characteristics of a steel sheet, enjoying a very high performance/weight ratio. The floor will be placed in a single span or on several supports (with end lap of 50mm minimum). The sheet will be delivered to the site exactly to the designated length (tolerance: - 0 + 20mm). However, if trimming is necessary on site, it can easily be done by means of a circular saw or a hand nibbler.

SPANS

According to the Eurocodes, the loads to be taken into consideration during the concreting operation are the following :– the dead weight of the steel and of the fresh concrete– excess load due to the operation of concreting– (A) 10% of the dead weight of the concrete but ≥0,75kN/m² and ≤1,5 kN/m² (on a surface of 3 m x 3 m)– (B) 0.75 kN/m² on the rest of the surface

The effect of increasing the weight of the concrete on the deflected surface of the sheet should be taken into consideration in the calculation of the dead weight of liquid concrete. If the deflection of the sheet δ is less than 20mm, this effect can be ignored. If not, one would take an over thickness of concrete equal to 0.70 δ on all the surface. Taking account of a maximum deflection of L/150 during assembly, the calculations determining when it is necessary to put supports have been calculated and are presented in the following load tables (see ch. 4).

(* under proper weight and fresh concrete weight)

PROPS

When the chosen span is such that it is necessary to use temporary supports, these can be carried out by traditional means of dealing with reinforced concrete floors. The supports must be placed in the middle of the span (or at 1/3rd of the span if there are two supports), before the casting of the concrete and must stay in place at least eight days after this. It is understood that the sheet can not be interrupted at the point of the stiffening supports, since they are only temporary.

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cofraplus 77 Stages of shuttering and concreting

FASTENERS

a) Sheet/support: the sheets must be fixed at the extremities to avoid being displaced due to wind action or during concreting.Two fixings in the width of the sheet are sufficient. On the intermediate supports, in the case of continuous runs, fixings are not required. The fixings must be suitable for the supports (nails, self-tapping screws, or self-drilling screws).

b) Sheet/sheet: to avoid sheets separating during concreting, it is recommended that they be fixed with rivets every 0,75m when working in single span and every 1m when working in multi span centres. This may be done by means of self drilling screws or rivets.

BOXING IN THE EDGES AND THE EXTREMITIES OF THE PROFIL

The boxing in of the edges is generally done by means of angle-irons in galvanised steel of a suitable size for the thickness of the floor. Typical shuttering in timber can also be used. At the extremities of the profile, a polyethylene foam closed cell filler is used, cut to the shape of the profile, to close it in.

Attention It is necessary to use floor protection or wooden boards sufficiently wide to avoid marking the sheet during fixing. This comment applies particularly to floors where the back surface is pre-coated, since this part would be visible when used as a visible ceiling.

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2 to 3 cm

cofraplus 77Stages of shuttering and concreting

When the profiles are placed end to end, an end overlap of 50mm is sufficient to ensure water-tightness at the joint. This could also be achieved by using self adhesive foam strips.

THE MAKING OF OPENINGS

Openings should be foreseen, using formwork, at the initial casting of the concrete. After when the concrete has become hard, the profile can be cut. The use of a reinforcement is not required if a single corrugation is cut. In the case of two or three corrugations being cut, one would compensate the loss of steel section by placing reinforcing bars or rails around the opening. For more major openings, please contact our technical department.

REINFORCEMENTS

The principal characteristic of a composite floor is the steel sheet taking over the role of the lower reinforcement steel bars of the floor. However, to limit the shrinkage of the concrete and to avoid cracking, it is necessary to use a wire mesh, positioned at 2 to 3 cm below the finished floor surface. On the intermediate supports, in case of a continuous slab, the deflection moment is negative. The upper side of the slab is in tension.

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cofraplus 77 Stages of shuttering and concreting

The sections of the upper reinforcement steel bars are given in the load tables in this brochure. The wire mesh needs to be layed in overlap (continuous) on the supporting points. The sections of the anti-shrinkage are given for the maximum load bearing capacity. If the actual load should be less, the wire mesh section may be possibly adapted accordingly.

CONCRETING

1. The concreteThe concrete used according to EN 206 and EN 206-1 starts with NC 25/30 (normal concrete) until NC 35/45 and LC 30/33 (light concrete) until 35/38. The nominal dimension of the aggregates depends on the smallest dimension of the structural element on to which the concrete is poured. It may not exceed the smallest of the following values:– 0.40 hc– bo/3 (=28mm in the case of the “COFRAPLUS 77”)– 30 mm

In the case of light concrete made up of extended aggregates of clay (Argex) : R’wk=30N/mm2. The density in this case is 1.8kN/m3.

2. ApplicationBefore concreting, it is firmly advised to clean off all dirt with a brush or a water jet. The concreting is done by traditional methods – that is to say pump, concrete tub/mixer etc.

It is necessary to avoid large lumps of concrete. It is further advised to pour the concrete on the supports first. It is not necessary to vibrate the concrete. The loss of liquidity is very small. However, if this loss presents unsightly marks on the back surface, it is advisable to clean these with a simple jet of water during the work. In the case where the floor has to be covered with a water-tight layer, it is necessary to take account of the fact that the sheet, preventing evaporation, slows down the drying action of the floor. The water-tight layer will therefore be placed accordingly.

3. Volume to be used Thickness of floor (cm) 13 14 15 16 17 18 19 20 21

Volume of concrete in litres 86 96 106 116 126 136 146 156 166

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cofraplus 77Characteristics of the finished floor

Characteristics of the finished floorDEAD WEIGHT OF THE FLOOR

d cm

Cofraplus 77kg/m²

Cofraplus 77LS*kg/m²

13 223 16214 247 18015 272 19716 296 21517 321 23218 345 25019 370 26720 394 28521 419 302

* LC 16/18-D16)

VERIFICATION OF THE COMPOSITE FLOOR

The resistance of the composite slab shall be sufficient to withstand the design loads and to ensure that no ultimate limit state is reached, based on one of the following modes of failure.

Critical section I:Breaking by flexure: moment of resistance Mpc. This section can be critical if there is complete shear connection at the interface between the profiled sheet and the concrete.

Critical section II:Longitudinal slip failure: shear resistance V R1. In this case, the maximum load on the slab is determined by the resistance of the shear connection.

The ultimate moment cannot be reached at section I: this is defined as partial shear connection. The maximum design vertical shear should not exceed the design shear resistance V R1 determined from the following semi-empirical relation:

Materials g ts = 1.00 (steel sheet) (EC 3) g bs = 1.15 (reinforcement steel bars) (EC 3) g c = 1,5 (concrete) (EC 2)Model g v = 1,25 (shearing) (EC 4)Loads g p = g o = 1,35 (permanent loads) (EC 4) g q = 1,5 (dynamic load) (EC 4)

V R1 = b.ds ( (m As / b Ls + k) / γv

where ds = effective depth of slab to the centroid of the profiled sheetb = width of the slabAs = cross-sectional area of the profiled sheetLs = shear span (taken equal to L/4 for a uniform load) γV = partial safety factor including model uncertainties = 1.25 m & k= empirical factors obtained from tests carried out following regulations of EUROCODE 4, in the Federal Polytechnic School at Lausanne and the CSTC.

Values for:cofraplus 77 corfraplus 77 LS

m 138,3 183,9k 0,0446 -0,0944

Critical section III :Rupture of concrete by vertical shear strength: vertical shear resistance V RV.

This section is critical in some special cases, for example thick slabs with sort spans and very important loads. The vertical shear resistance V RV of a composite slab over a width equal to the distance between centres of the ribs should be determined from:

Critical section IV : deflectionThe deflection will be chosen by the customer according to its use. The minimum deflection admitted by the Eurocodes is L/300.

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cofraplus 77 Cofraplus 77 LS

Cofraplus 77 LSA reduction of proper weight can also be particularly appreciated in case of multi-storey buildings, enabling the optimization of the structure and foundations. This lightness can also be precious in the case of renovations, when the bearing capacity of the walls or foundations is limited.

A lighter weight of concrete also enables larger spans without props at the concreting stage. The use of composite floor Cofraplus 77 LS has been developed with a structural concrete with light expanded aggregates of clay (Argex ©)

CHARACTERISTICS AND PROPERTIES OF ARGEX CONCRETE:

Composition of the clay aggregates : 100% clayDensity of Argex Concrete : minimum 1600kg/m3

Thermal insulation : λ = 0.65W/m.K (1.3 W/m.K for normal concrete)Load bearing : 10 to 20 T/m2

This type of concrete also allows a more efficient thermal insulation of the composite floor. This property has interesting repercussions on the fire resistance.

Adapted load tables are available here below.

USE OF LOAD TABLES

The load tables give, for 3 thicknesses of available sheet, the service loads applicable on the finished floor, in function of:- the static scheme (1, 2 or 3 spans)- the thickness of the slab,- the distance between supports.

These loads have been calculated on pre-stated hypotheses and the limitations of the deformation under those loads of f/l ≤ 1/300.

If the floor is to receive a covering of a fragile type (e.g. tiling), it is necessary to take into account more severe conditions. For more information, do not hesitate to contact our technical services.

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cofraplus 77load span tables

Single span

Admissible load (kN/m²)Upper reinforcement 150x150x6x6

Rebar in the rib (mm/rib) 0

Thickness Slab depth (mm) Span (m)2,00 2,20 2,40 2,60 2,80 3,00 3,20 3,40 3,60 3,80 4,00

0,75

130 14,5 12,1 10,1 8,6 7,4 6,2 5,6 4,8 4,2 3,6 3,2140 14,9 12,4 10,4 8,9 7,6 6,6 5,8 5,0 4,3 3,8 3,3150 15,3 12,8 10,7 9,2 7,9 6,8 5,9 5,1 4,5 3,9 3,4160 15,7 13,1 11,0 9,4 8,1 7,0 6,1 5,3 4,6 4,0 3,4170 16,1 13,4 11,3 9,7 8,3 7,2 6,3 5,4 4,7 4,1 3,5180 16,5 13,8 11,6 9,9 8,5 7,4 6,4 5,5 4,8 4,2 3,6190 16,9 14,1 11,9 10,2 8,7 7,5 6,5 5,6 4,9 4,2 3,7200 17,3 14,5 12,2 10,4 8,9 7,6 6,6 5,7 4,9 4,3 3,7210 17,7 14,8 12,5 10,6 9,1 7,8 6,7 5,8 5,0 4,4 3,8

0,88

130 16,6 13,8 11,6 9,9 8,5 7,3 6,2 5,6 4,9 4,3 3,8140 17,0 14,1 11,9 10,1 8,7 7,5 6,6 5,7 5,0 4,4 3,9150 17,4 14,5 12,2 10,4 8,9 7,7 6,7 5,9 5,2 4,6 4,0160 17,8 14,8 12,5 10,6 9,2 7,9 6,9 6,0 5,3 4,7 4,1170 18,2 15,2 12,8 10,9 9,4 8,1 7,1 6,2 5,4 4,8 4,2180 18,6 15,5 13,1 11,2 9,6 8,3 7,2 6,3 5,5 4,8 4,2190 19,0 15,9 13,4 11,4 9,8 8,5 7,4 6,4 5,6 4,9 4,3200 19,4 16,2 13,7 11,7 10,0 8,7 7,5 6,5 5,7 4,9 4,3210 19,8 16,6 14,0 11,9 10,3 8,8 7,6 6,6 5,8 5,0 4,4

1,00

130 18,6 15,4 12,9 11,0 9,5 8,2 7,1 6,0 5,2 4,9 4,3140 19,0 15,7 13,2 11,3 9,7 8,4 7,3 6,2 5,6 5,0 4,4150 19,4 16,1 13,5 11,5 9,9 8,6 7,5 6,3 5,8 5,1 4,5160 19,8 16,4 13,8 11,8 10,1 8,8 7,6 6,7 5,9 5,2 4,6170 20,2 16,8 14,1 12,0 10,4 9,0 7,8 6,8 6,0 5,3 4,7180 20,6 17,1 14,4 12,3 10,6 9,2 8,0 7,0 6,1 5,4 4,8190 21,0 17,5 14,7 12,6 10,8 9,4 8,1 7,1 6,3 5,5 4,8200 21,4 17,8 15,0 12,8 11,0 9,6 8,3 7,3 6,3 5,5 4,9210 21,8 18,2 15,3 13,1 11,3 9,7 8,5 7,4 6,4 5,6 4,9

Upper reinforcement 150x150x6x6Rebar in the rib (mm/rib) 8

Thickness Slab depth (mm) Span (m)3,00 3,20 3,40 3,60 3,80 4,00 4,20 4,40 4,60 4,80 5,00

0,75

130 12,0 10,6 9,3 7,8 6,3 5,1 4,1 3,3140 13,1 11,4 10,0 8,8 7,8 6,9 5,6 4,5 3,7 2,9150 14,0 12,2 10,7 9,4 8,3 7,4 6,5 5,8 5,0 4,0 3,2160 14,9 13,0 11,4 10,0 8,9 7,8 7,0 6,2 5,5 4,9 4,4170 15,8 13,8 12,1 10,7 9,4 8,3 7,4 6,6 5,9 5,3 4,7180 16,7 14,6 12,8 11,3 9,9 8,8 7,8 7,0 6,2 5,6 5,0190 17,6 15,4 13,5 11,9 10,5 9,3 8,3 7,4 6,6 5,9 5,3200 18,5 16,2 14,2 12,5 11,0 9,8 8,7 7,8 6,9 6,2 5,5210 19,4 17,0 14,9 13,1 11,6 10,3 9,1 8,1 7,3 6,5 5,8

0,88

130 13,1 11,2 10,1 8,1 6,6 5,3 4,3 3,4140 14,0 12,3 10,8 9,5 8,5 7,1 5,8 4,7 3,8 3,1150 14,9 13,1 11,5 10,1 9,0 8,0 7,1 6,3 5,2 4,2 3,4160 15,8 13,8 12,2 10,8 9,5 8,5 7,5 6,7 6,0 5,4 4,6170 16,7 14,6 12,9 11,4 10,1 9,0 8,0 7,1 6,4 5,7 5,1180 17,6 15,4 13,6 12,0 10,6 9,5 8,4 7,5 6,7 6,0 5,4190 18,5 16,2 14,2 12,6 11,2 9,9 8,9 7,9 7,1 6,3 5,7200 19,4 17,0 14,9 13,2 11,7 10,4 9,3 8,3 7,4 6,6 5,9210 20,3 17,8 15,6 13,8 12,3 10,9 9,7 8,7 7,8 6,9 6,2

1,00

130 13,5 12,2 10,5 9,2 6,8 5,5 4,4 3,5140 14,9 13,0 11,2 10,1 9,0 7,4 6,0 4,9 4,0 3,2150 15,8 13,8 11,9 10,7 9,5 8,5 7,6 6,6 5,4 4,4 3,6160 16,7 14,6 12,8 11,3 10,1 9,0 8,0 7,2 6,5 5,8 4,8170 17,6 15,4 13,5 12,0 10,6 9,5 8,5 7,6 6,8 6,1 5,5180 18,5 16,2 14,2 12,6 11,2 10,0 8,9 8,0 7,2 6,4 5,8190 19,4 16,9 14,9 13,2 11,7 10,4 9,3 8,4 7,5 6,7 6,0200 20,3 17,7 15,6 13,8 12,3 10,9 9,8 8,8 7,9 7,0 6,3210 21,2 18,5 16,3 14,4 12,8 11,4 10,2 9,2 8,2 7,4 6,6

Upper reinforcement 150x150x6x6Rebar in the rib (mm/rib) 12

Thickness Slab depth (mm) Span (m)4,00 4,20 4,40 4,60 4,80 5,00 5,20 5,40 5,60 5,80 6,00

0,75

130 5,5 4,4 3,6140 7,4 6,0 4,9 4,0 3,2150 9,6 7,9 6,5 5,4 4,4 3,6 2,9160 12,2 10,2 8,4 7,0 5,8 4,8 3,9 3,2 2,6170 13,8 12,4 10,6 8,9 7,5 6,2 5,2 4,3 3,5 2,8180 14,8 13,3 12,0 10,8 9,3 7,9 6,6 5,5 4,6 3,8 3,1190 15,9 14,2 12,8 11,6 10,4 9,4 8,2 6,9 5,8 4,9 4,1200 16,9 15,1 13,6 12,3 11,1 10,0 9,1 8,3 7,3 6,2 5,2210 17,9 16,0 14,4 13,0 11,7 10,6 9,7 8,8 8,0 7,3 6,4

0,88

130 5,7 4,6 3,7140 7,6 6,2 5,1 4,2 3,4150 10,0 8,2 6,8 5,6 4,6 3,8 3,0160 12,7 10,5 8,8 7,3 6,1 5,0 4,1 3,4 2,7170 14,1 13,0 11,0 9,3 7,8 6,5 5,4 4,5 3,7 3,0180 15,2 13,9 12,5 11,3 9,7 8,2 6,9 5,8 4,8 4,0 3,3190 16,3 14,8 13,3 12,0 10,9 9,9 8,6 7,3 6,1 5,1 4,3200 17,4 15,7 14,1 12,8 11,5 10,4 9,5 8,6 7,6 6,4 5,4210 18,5 16,6 14,9 13,5 12,2 11,0 10,0 9,1 8,3 7,6 6,7

1,00

130 5,8 4,7 3,8140 7,8 6,4 5,3 4,3 3,5150 10,3 8,5 7,0 5,8 4,8 3,9 3,2160 12,9 10,9 9,0 7,5 6,3 5,2 4,3 3,5 2,8170 14,1 13,2 11,4 9,6 8,0 6,7 5,6 4,7 3,8 3,1180 15,2 14,3 12,9 11,7 10,0 8,5 7,1 6,0 5,0 4,2 3,4190 16,3 15,3 13,8 12,4 11,3 10,2 8,9 7,5 6,4 5,4 4,5200 17,4 16,2 14,6 13,2 11,9 10,8 9,8 8,9 7,9 6,7 5,7210 18,5 17,1 15,4 13,9 12,6 11,4 10,4 9,4 8,6 7,8 7,0

Deflection during construction L/180 Deflection of finished floor L/300Concrete covering 25mm Concrete class NC25/30End support width 50mm Internal support width 100mm

Number of props during construction Without prop 1 prop 2 props

Page 17: Cofraplus 77 - ArcelorMittal · 3 Further advantage The COFRAPLUS 77 is manufactured with a pre-coating, and consequently it is easy to provide the floor with the underface already

15

cofraplus 77 load span tables

Double span

Admissible load (kN/m²)Upper reinforcement 150x150x6x6

Rebar in the rib (mm/rib) 0

Thickness Slab depth (mm) Span (m)2,00 2,20 2,40 2,60 2,80 3,00 3,20 3,40 3,60 3,80 4,00

0,75

130 12,2 10,8 8,7 7,1 5,9 4,9 4,0 3,3 2,8 2,3 1,8140 12,9 11,5 9,6 7,8 6,5 5,3 4,4 3,7 3,0 2,5 2,0150 13,9 12,5 10,5 8,6 7,0 5,8 4,8 4,0 3,3 2,7 2,2160 15,0 13,4 11,3 9,3 7,6 6,3 5,2 4,3 3,5 2,9 2,4170 16,1 14,4 12,2 10,0 8,2 6,8 5,6 4,6 3,8 3,1 2,5180 17,2 15,4 13,1 10,7 8,8 7,2 6,0 4,9 4,1 3,3 2,7190 18,3 16,4 13,9 11,4 9,3 7,7 6,4 5,3 4,3 3,5 2,9200 19,4 17,3 14,8 12,1 9,9 8,2 6,8 5,6 4,6 3,7 3,0210 20,5 18,1 15,4 12,8 10,5 8,6 7,1 5,9 4,8 4,0 3,2

0,88

130 12,2 10,8 8,7 7,1 5,9 4,8 4,0 3,3 2,7 2,2 1,8140 12,8 11,5 9,6 7,8 6,4 5,3 4,4 3,6 3,0 2,5 2,0150 13,9 12,4 10,4 8,5 7,0 5,8 4,8 4,0 3,3 2,7 2,2160 15,0 13,4 11,3 9,2 7,6 6,3 5,2 4,3 3,5 2,9 2,3170 16,1 14,4 12,2 9,9 8,2 6,7 5,6 4,6 3,8 3,1 2,5180 17,2 15,4 13,0 10,6 8,7 7,2 6,0 4,9 4,0 3,3 2,7190 18,3 16,3 13,9 11,3 9,3 7,7 6,3 5,2 4,3 3,5 2,8200 19,4 17,3 14,8 12,1 9,9 8,2 6,7 5,6 4,6 3,7 3,0210 20,5 18,3 15,6 12,8 10,5 8,6 7,1 5,9 4,8 3,9 3,2

1,00

130 12,2 10,8 8,7 7,1 5,9 4,8 4,0 3,3 2,7 2,2 1,8140 12,8 11,5 9,6 7,8 6,4 5,3 4,4 3,6 3,0 2,4 2,0150 13,9 12,4 10,4 8,5 7,0 5,8 4,8 3,9 3,2 2,7 2,2160 15,0 13,4 11,3 9,2 7,6 6,3 5,2 4,3 3,5 2,9 2,3170 16,1 14,4 12,2 9,9 8,2 6,7 5,6 4,6 3,8 3,1 2,5180 17,2 15,3 13,0 10,6 8,7 7,2 5,9 4,9 4,0 3,3 2,7190 18,3 16,3 13,9 11,3 9,3 7,7 6,3 5,2 4,3 3,5 2,8200 19,4 17,3 14,8 12,0 9,9 8,1 6,7 5,5 4,6 3,7 3,0210 20,5 18,3 15,6 12,7 10,5 8,6 7,1 5,9 4,8 3,9 3,2

Upper reinforcement 150x150x8x8Rebar in the rib (mm/rib) 0

Thickness Slab depth (mm) Span (m)3,00 3,20 3,40 3,60 3,80 4,00 4,20 4,40 4,60 4,80 5,00

0,75

130 8,2 7,2 6,3 5,6 5,0 4,4 3,9 3,4140 8,4 7,4 6,5 5,8 5,1 4,6 4,1 3,6 3,3 2,8150 8,7 7,6 6,7 5,9 5,3 4,7 4,2 3,8 3,3 3,0 2,6160 8,9 7,8 6,9 6,1 5,4 4,8 4,3 3,8 3,4 3,0 2,7170 9,1 8,0 7,0 6,2 5,5 4,9 4,4 3,9 3,5 3,1 2,7180 9,3 8,2 7,2 6,4 5,7 5,0 4,5 4,0 3,6 3,2 2,8190 9,5 8,4 7,4 6,5 5,8 5,2 4,6 4,1 3,6 3,2 2,8200 9,7 8,5 7,5 6,7 5,9 5,3 4,7 4,2 3,7 3,3 2,9210 10,0 8,7 7,7 6,8 6,1 5,4 4,8 4,3 3,8 3,4 3,0

0,88

130 9,3 8,2 7,1 6,1 5,3 4,5 3,9 3,4140 9,6 8,4 7,5 6,6 5,8 5,0 4,3 3,8 3,2 2,8150 9,9 8,7 7,6 6,8 6,0 5,4 4,7 4,1 3,5 3,1 2,6160 10,1 8,8 7,8 6,9 6,1 5,5 4,9 4,4 3,8 3,3 2,8170 10,3 9,0 8,0 7,1 6,3 5,6 5,0 4,5 4,0 3,6 3,1180 10,5 9,2 8,1 7,2 6,4 5,7 5,1 4,6 4,1 3,7 3,3190 10,7 9,4 8,3 7,4 6,5 5,8 5,2 4,7 4,2 3,7 3,4200 11,0 9,6 8,5 7,5 6,7 5,9 5,3 4,7 4,3 3,8 3,4210 11,2 9,8 8,6 7,7 6,8 6,1 5,4 4,8 4,3 3,9 3,5

1,00

130 9,4 8,2 7,1 6,1 5,2 4,5 3,9 3,4140 9,9 9,1 7,8 6,7 5,8 5,0 4,3 3,7 3,2 2,8150 10,4 9,6 8,5 7,3 6,3 5,5 4,7 4,1 3,5 3,0 2,6160 10,8 9,8 8,7 7,7 6,8 5,9 5,1 4,4 3,8 3,3 2,8170 11,3 10,0 8,8 7,8 7,0 6,2 5,5 4,8 4,1 3,6 3,0180 11,6 10,2 9,0 8,0 7,1 6,3 5,7 5,1 4,4 3,8 3,3190 11,9 10,4 9,2 8,1 7,2 6,5 5,8 5,2 4,6 4,1 3,5200 12,1 10,6 9,3 8,3 7,4 6,6 5,9 5,3 4,7 4,2 3,7210 12,3 10,8 9,5 8,4 7,5 6,7 6,0 5,4 4,8 4,3 3,9

Upper reinforcement 150x150x8x8 + ø 8mm every 150mmRebar in the rib (mm/rib) 8

Thickness Slab depth (mm) Span (m)4,00 4,20 4,40 4,60 4,80 5,00 5,20 5,40 5,60 5,80 6,00

0,75

130 8,0 6,7 5,6140 8,8 7,9 7,1 6,2 5,3150 9,5 8,5 7,6 6,9 6,3 5,7 5,0160 10,1 9,1 8,2 7,4 6,7 6,1 5,5 5,0 4,6170 10,5 9,7 8,7 7,9 7,1 6,5 5,9 5,4 4,9 4,5180 10,9 10,2 9,2 8,4 7,6 6,9 6,3 5,7 5,2 4,8 4,4190 11,3 10,6 9,8 8,8 8,0 7,3 6,6 6,1 5,5 5,1 4,6200 11,7 10,9 10,3 9,3 8,5 7,7 7,0 6,4 5,8 5,3 4,9210 12,0 11,3 10,6 9,8 8,9 8,1 7,4 6,7 6,2 5,6 5,2

0,88

130 8,3 6,9 5,8140 9,3 8,6 7,7 6,5 5,5150 9,7 9,1 8,3 7,5 6,8 6,1 5,2160 10,1 9,5 8,8 8,0 7,2 6,6 6,0 5,4 4,9170 10,5 9,9 9,3 8,4 7,7 7,0 6,3 5,8 5,3 4,8180 10,9 10,2 9,6 8,9 8,1 7,4 6,7 6,1 5,6 5,1 4,7190 11,3 10,6 10,0 9,4 8,5 7,8 7,1 6,5 5,9 5,4 4,9200 11,7 10,9 10,3 9,7 9,0 8,2 7,5 6,8 6,2 5,7 5,2210 12,0 11,3 10,6 9,9 9,4 8,6 7,8 7,1 6,5 6,0 5,5

1,00

130 8,8 7,1 6,0140 9,2 8,7 7,9 6,7 5,7150 9,7 9,1 8,6 8,0 7,3 6,3 5,4160 10,1 9,5 8,9 8,4 7,7 7,0 6,4 5,8 5,1170 10,5 9,9 9,3 8,8 8,1 7,4 6,7 6,2 5,6 5,2180 10,9 10,2 9,6 9,1 8,6 7,8 7,1 6,5 5,9 5,4 5,0190 11,3 10,6 9,9 9,4 8,8 8,2 7,5 6,8 6,3 5,7 5,3200 11,6 10,9 10,3 9,7 9,1 8,6 7,9 7,2 6,6 6,0 5,5210 12,0 11,2 10,6 9,9 9,4 8,8 8,2 7,5 6,9 6,3 5,8

Deflection during construction L/180 Deflection of finished floor L/300Concrete covering 25mm Concrete class NC25/30End support width 50mm Internal support width 100mm

Number of props during construction Without prop 1 prop 2 props

Page 18: Cofraplus 77 - ArcelorMittal · 3 Further advantage The COFRAPLUS 77 is manufactured with a pre-coating, and consequently it is easy to provide the floor with the underface already

16

cofraplus 77load span tables

Multi-spanDeflection during construction L/180 Deflection of finished floor L/300Concrete covering 25mm Concrete class NC25/30End support width 50mm Internal support width 100mm

Number of props during construction Without prop 1 prop 2 props

Admissible load (kN/m²)Upper reinforcement 150x150x6x6

Rebar in the rib (mm/rib) 0

Thickness Slab depth (mm) Span (m)2,00 2,20 2,40 2,60 2,80 3,00 3,20 3,40 3,60 3,80 4,00

0,75

130 12,4 11,1 9,8 8,1 6,7 5,6 4,7 4,0 3,4 2,9 2,4140 13,1 11,7 10,5 8,9 7,4 6,2 5,2 4,4 3,7 3,1 2,6150 14,2 12,7 11,4 9,7 8,1 6,7 5,7 4,8 4,0 3,4 2,9160 15,3 13,6 12,3 10,5 8,7 7,3 6,1 5,2 4,4 3,7 3,1170 16,4 14,6 13,2 11,3 9,4 7,9 6,6 5,6 4,7 4,0 3,3180 17,5 15,6 13,8 11,8 10,1 8,4 7,1 5,9 5,0 4,2 3,6190 18,6 16,6 14,1 12,1 10,4 9,0 7,5 6,3 5,3 4,5 3,8200 19,7 17,1 14,4 12,4 10,7 9,3 8,0 6,7 5,7 4,8 4,0210 20,8 17,4 14,7 12,6 10,9 9,5 8,3 7,1 6,0 5,0 4,2

0,88

130 12,3 11,0 9,8 8,1 6,7 5,6 4,7 4,0 3,4 2,7 2,4140 13,0 11,6 10,5 8,9 7,4 6,2 5,2 4,4 3,7 3,1 2,6150 14,1 12,6 11,4 9,7 8,0 6,7 5,7 4,8 4,0 3,4 2,9160 15,3 13,6 12,3 10,5 8,7 7,3 6,1 5,2 4,3 3,7 3,1170 16,4 14,6 13,2 11,3 9,4 7,8 6,6 5,5 4,7 3,9 3,3180 17,5 15,6 14,1 12,1 10,0 8,4 7,1 5,9 5,0 4,2 3,5190 18,6 16,6 14,9 12,9 10,7 8,9 7,5 6,3 5,3 4,5 3,8200 19,7 17,6 15,8 13,7 11,4 9,5 8,0 6,7 5,7 4,8 4,0210 20,8 18,6 16,6 14,2 12,0 10,1 8,4 7,1 6,0 5,0 4,2

1,00

130 12,3 11,0 9,8 8,1 6,7 5,6 4,7 4,0 3,4 2,8 2,2140 13,0 11,6 10,5 8,9 7,4 6,2 5,2 4,4 3,7 3,1 2,4150 14,1 12,6 11,4 9,7 8,0 6,7 5,6 4,8 4,0 3,4 2,6160 15,2 13,6 12,3 10,5 8,7 7,3 6,1 5,1 4,3 3,7 3,1170 16,4 14,6 13,1 11,3 9,4 7,8 6,6 5,5 4,7 3,9 3,3180 17,5 15,6 14,0 12,1 10,0 8,4 7,0 5,9 5,0 4,2 3,5190 18,6 16,6 14,9 12,9 10,7 8,9 7,5 6,3 5,3 4,5 3,8200 19,7 17,6 15,8 13,7 11,4 9,5 8,0 6,7 5,6 4,7 4,0210 20,8 18,6 16,7 14,5 12,0 10,0 8,4 7,1 6,0 5,0 4,2

Upper reinforcement 150x150x8x8Rebar in the rib (mm/rib) 0

Thickness Slab depth (mm) Span (m)3,00 3,20 3,40 3,60 3,80 4,00 4,20 4,40 4,60 4,80 5,00

0,75

130 7,8 6,9 6,0 5,3 4,7 4,1 3,7 3,2140 8,1 7,1 6,2 5,5 4,8 4,3 3,8 3,4 3,0 2,7150 8,3 7,2 6,4 5,6 5,0 4,4 3,9 3,5 3,1 2,7 2,4160 8,5 7,4 6,5 5,8 5,1 4,5 4,0 3,6 3,2 2,8 2,5170 8,7 7,6 6,7 5,9 5,2 4,6 4,1 3,7 3,2 2,8 2,5180 8,9 7,8 6,8 6,0 5,3 4,7 4,2 3,7 3,3 2,9 2,5190 9,1 7,9 7,0 6,2 5,4 4,8 4,3 3,8 3,4 2,9 2,6200 9,3 8,1 7,1 6,3 5,6 4,9 4,4 3,9 3,4 3,0 2,6210 9,5 8,3 7,3 6,4 5,7 5,0 4,5 4,0 3,5 3,0 2,7

0,88

130 8,8 7,8 6,9 6,1 5,3 4,9 4,3 3,8140 9,1 8,0 7,1 6,3 5,6 5,0 4,4 4,0 3,5 3,2150 9,4 8,3 7,3 6,4 5,7 5,1 4,5 4,1 3,6 3,3 2,9160 9,7 8,4 7,4 6,6 5,8 5,2 4,6 4,1 3,7 3,3 3,0170 9,9 8,6 7,6 6,7 5,9 5,3 4,7 4,2 3,8 3,4 3,0180 10,1 8,8 7,7 6,8 6,1 5,4 4,8 4,3 3,8 3,4 3,0190 10,3 9,0 7,9 7,0 6,2 5,5 4,9 4,3 3,9 3,5 3,1200 10,5 9,1 8,0 7,1 6,3 5,6 5,0 4,4 3,9 3,5 3,1210 10,7 9,3 8,2 7,2 6,4 5,7 5,0 4,5 4,0 3,6 3,2

1,00

130 9,6 8,6 7,6 6,8 6,0 5,1 4,4 3,8140 10,1 8,9 7,8 7,0 6,2 5,4 4,7 4,5 3,9 3,5150 10,4 9,1 8,1 7,2 6,4 5,5 5,1 4,6 4,1 3,7 3,3160 10,6 9,4 8,3 7,3 6,5 5,8 5,2 4,6 4,1 3,7 3,3170 10,9 9,6 8,4 7,5 6,6 5,9 5,3 4,7 4,2 3,8 3,4180 11,1 9,8 8,6 7,6 6,7 6,0 5,3 4,8 4,3 3,8 3,4190 11,3 9,9 8,7 7,7 6,8 6,1 5,4 4,8 4,3 3,9 3,5200 11,5 10,1 8,9 7,9 7,0 6,2 5,5 4,9 4,4 3,9 3,5210 11,7 10,3 9,0 8,0 7,1 6,3 5,6 5,0 4,5 4,0 3,5

Upper reinforcement 150x150x8x8 + ø 8mm every 150mmRebar in the rib (mm/rib) 8

Thickness Slab depth (mm) Span (m)4,00 4,20 4,40 4,60 4,80 5,00 5,20 5,40 5,60 5,80 6,00

0,75

130 7,4 6,1 5,1140 8,4 7,5 6,7 5,7 4,8150 9,0 8,0 7,2 6,5 5,9 5,3 4,5160 9,6 8,6 7,7 7,0 6,3 5,7 5,2 4,7 4,2170 10,2 9,1 8,2 7,4 6,7 6,1 5,5 5,0 4,6 4,1180 10,8 9,7 8,7 7,9 7,1 6,5 5,9 5,3 4,8 4,4 4,0190 11,4 10,2 9,2 8,3 7,5 6,8 6,2 5,6 5,1 4,7 4,3200 11,9 10,8 9,7 8,8 7,9 7,2 6,5 6,0 5,4 4,9 4,5210 12,3 11,3 10,2 9,2 8,4 7,6 6,9 6,3 5,7 5,2 4,7

0,88

130 7,6 6,3 5,3140 9,1 8,2 7,0 5,9 5,0150 9,7 8,7 7,8 7,1 6,4 5,5 4,7160 10,3 9,3 8,3 7,5 6,8 6,2 5,6 5,1 4,4170 10,7 9,8 8,8 8,0 7,2 6,5 5,9 5,4 4,9 4,5180 11,1 10,4 9,3 8,4 7,6 6,9 6,3 5,7 5,2 4,7 4,3190 11,5 10,8 9,8 8,9 8,0 7,3 6,6 6,0 5,5 5,0 4,6200 11,9 11,1 10,3 9,3 8,4 7,7 7,0 6,3 5,8 5,3 4,8210 12,2 11,5 10,8 9,8 8,9 8,0 7,3 6,7 6,1 5,5 5,0

1,00

130 8,7 7,9 7,1140 9,2 8,5 7,3 6,1 5,1150 9,6 9,3 8,4 7,6 6,8 5,7 4,8160 10,3 9,7 8,9 8,0 7,3 6,6 6,0 5,3 4,5170 10,7 10,1 9,4 8,5 7,7 7,0 6,3 5,8 5,3 4,8180 11,1 10,4 9,8 8,9 8,1 7,3 6,7 6,1 5,5 5,1 4,6190 11,5 10,8 10,1 9,4 8,5 7,7 7,0 6,4 5,8 5,3 4,9200 11,9 11,1 10,5 9,8 8,9 8,1 7,4 6,7 6,1 5,6 5,1210 12,2 11,5 10,8 10,1 9,3 8,5 7,7 7,0 6,4 5,8 5,3

Page 19: Cofraplus 77 - ArcelorMittal · 3 Further advantage The COFRAPLUS 77 is manufactured with a pre-coating, and consequently it is easy to provide the floor with the underface already

17

cofraplus 77ls load span tables

Admissible load (kN/m²)Upper reinforcement 150x150x6x6

Rebar in the rib (mm/rib) 0

Thickness Slab depth (mm) Span (m)2,00 2,20 2,40 2,60 2,80 3,00 3,20 3,40 3,60 3,80 4,00

0,75

130 13,8 11,4 9,6 8,1 7,0 6,0 5,1 4,6 4,0 3,6 3,2140 14,1 11,7 9,8 8,3 7,2 6,2 5,4 4,7 4,1 3,6 3,2150 14,4 11,9 10,0 8,5 7,3 6,3 5,5 4,8 4,2 3,7 3,3160 14,7 12,2 10,3 8,7 7,5 6,5 5,6 4,9 4,3 3,8 3,3170 15,0 12,4 10,5 8,9 7,7 6,6 5,8 5,0 4,4 3,9 3,4180 15,3 12,7 10,7 9,1 7,8 6,8 5,9 5,1 4,5 3,9 3,4190 15,6 13,0 10,9 9,3 8,0 6,9 6,0 5,2 4,6 4,0 3,5200 15,9 13,2 11,1 9,5 8,2 7,0 6,1 5,3 4,6 4,0 3,5210 16,2 13,5 11,4 9,7 8,3 7,2 6,2 5,4 4,7 4,1 3,5

0,88

130 15,9 13,1 11,0 9,4 8,1 7,0 6,1 5,1 4,7 4,1 3,5140 16,2 13,4 11,3 9,6 8,2 7,1 6,2 5,4 4,8 4,2 3,7150 16,5 13,7 11,5 9,8 8,4 7,3 6,1 5,5 4,9 4,3 3,8160 16,8 13,9 11,7 10,0 8,6 7,4 6,4 5,6 5,0 4,4 3,9170 17,1 14,2 11,9 10,2 8,7 7,5 6,6 5,7 5,0 4,4 3,9180 17,4 14,4 12,2 10,3 8,9 7,7 6,7 5,8 5,1 4,5 4,0190 17,7 14,7 12,4 10,5 9,1 7,8 6,8 6,0 5,2 4,6 4,0200 18,0 15,0 12,6 10,7 9,2 8,0 6,9 6,1 5,3 4,7 4,1210 18,3 15,2 12,8 10,9 9,4 8,1 7,1 6,2 5,4 4,7 4,1

1,00

130 16,4 14,8 12,4 10,5 9,0 7,8 6,8 6,0 5,1 4,4 3,6140 18,1 15,0 12,6 10,7 9,2 8,0 6,9 6,1 5,2 4,7 4,2150 18,4 15,3 12,8 10,9 9,4 8,1 7,1 6,2 5,2 4,8 4,3160 18,7 15,5 13,1 11,1 9,5 8,3 7,2 6,3 5,5 4,9 4,3170 19,0 15,8 13,3 11,3 9,7 8,4 7,3 6,4 5,6 5,0 4,4180 19,3 16,0 13,5 11,5 9,9 8,5 7,4 6,5 5,7 5,0 4,5190 19,6 16,3 13,7 11,7 10,0 8,7 7,6 6,6 5,8 5,1 4,5200 19,9 16,6 13,9 11,9 10,2 8,8 7,7 6,7 5,9 5,2 4,6210 20,2 16,8 14,2 12,1 10,4 9,0 7,8 6,8 6,0 5,3 4,6

Upper reinforcement 150x150x6x6Rebar in the rib (mm/rib) 8

Thickness Slab depth (mm) Span (m)3,00 3,20 3,40 3,60 3,80 4,00 4,20 4,40 4,60 4,80 5,00

0,75

130 10,4 9,5 6,7 5,4 4,3 3,4 2,7140 11,6 10,5 8,9 7,2 5,8 4,7 3,8 3,0150 12,8 11,3 9,9 8,8 7,7 6,3 5,1 4,1 3,4 2,7160 13,8 12,0 10,6 9,3 8,3 7,4 6,6 5,5 4,5 3,6 2,9170 14,6 12,8 11,2 9,9 8,8 7,9 7,0 6,3 5,6 4,8 3,9180 15,4 13,5 11,9 10,5 9,3 8,3 7,4 6,7 6,0 5,3 4,8190 16,3 14,2 12,5 11,1 9,8 8,8 7,8 7,0 6,3 5,6 5,1200 17,1 15,0 13,2 11,7 10,4 9,2 8,3 7,4 6,6 5,9 5,3210 18,0 15,7 13,8 12,2 10,9 9,7 8,7 7,8 7,0 6,2 5,6

0,88

130 10,4 9,6 8,8 5,6 4,5 3,6 2,8140 11,6 10,8 9,3 7,5 6,1 4,9 4,0 3,2150 12,8 11,7 10,6 9,4 8,0 6,6 5,4 4,4 3,6 2,9160 14,0 12,8 11,3 10,0 8,9 7,9 7,0 5,7 4,7 3,9 3,1170 15,2 13,6 11,9 10,6 9,4 8,4 7,5 6,7 6,1 5,1 4,2180 16,4 14,3 12,6 11,1 9,9 8,8 7,9 7,1 6,4 5,8 5,2190 17,2 15,0 13,2 11,7 10,4 9,3 8,3 7,5 6,7 6,1 5,5200 18,1 15,8 13,9 12,3 10,9 9,7 8,7 7,8 7,0 6,4 5,7210 18,9 16,5 14,5 12,9 11,4 10,2 9,1 8,2 7,4 6,6 6,0

1,00

130 10,4 9,6 9,0 7,6 6,5 3,7 3,0140 11,6 10,8 10,0 9,2 6,3 5,1 4,2 3,4 2,7150 12,8 11,9 11,1 9,8 8,3 6,8 5,6 4,6 3,7 3,0 2,4160 14,0 13,0 11,9 10,6 9,4 8,4 7,3 6,0 5,0 4,1 3,3170 15,2 14,1 12,6 11,1 9,9 8,8 7,9 7,1 6,4 5,3 4,4180 16,4 15,1 13,2 11,7 10,4 9,3 8,3 7,5 6,7 6,1 5,5190 17,6 15,8 13,9 12,3 10,9 9,8 8,7 7,8 7,1 6,4 5,8200 18,8 16,5 14,6 12,9 11,4 10,2 9,1 8,2 7,4 6,7 6,0210 19,8 17,3 15,2 13,5 12,0 10,7 9,6 8,6 7,7 7,0 6,3

Upper reinforcement 150x150x6x6Rebar in the rib (mm/rib) 12

Thickness Slab depth (mm) Span (m)4,00 4,20 4,40 4,60 4,80 5,00 5,20 5,40 5,60 5,80 6,00

0,75

130 3,6 2,8140 5,0 4,0 3,2150 6,6 5,4 4,4 3,6 2,9160 8,5 7,0 5,8 4,8 3,9 3,2 2,6170 10,7 8,9 7,4 6,2 5,1 4,2 3,5 2,8180 11,7 11,0 9,3 7,8 6,5 5,4 4,5 3,7 3,1 2,5190 12,6 11,8 11,2 9,6 8,1 6,8 5,7 4,8 4,0 3,3 2,7200 13,4 12,7 12,0 11,3 9,8 8,3 7,1 6,0 5,0 4,2 3,5210 14,3 13,5 12,7 12,0 11,2 10,1 8,6 7,3 6,2 5,2 4,4

0,88

130 3,7 3,0140 5,2 4,2 3,4150 6,9 5,6 4,6 3,8 3,0160 8,9 7,3 6,1 5,0 4,1 3,4 2,7170 10,8 9,3 7,8 6,5 5,4 4,5 3,7 3,0180 11,7 11,0 9,7 8,1 6,8 5,7 4,8 4,0 3,3 2,6190 12,6 11,8 11,2 10,0 8,5 7,1 6,0 5,0 4,2 3,5 2,9200 13,4 12,6 11,9 11,3 10,3 8,7 7,4 6,3 5,3 4,5 3,7210 14,3 13,5 12,7 12,0 11,4 10,5 9,0 7,7 6,5 5,5 4,7

1,00

130 3,9 3,1140 5,4 4,3 3,5150 7,1 5,9 4,8 3,9 3,2160 9,2 7,6 6,3 5,2 4,3 3,5 2,9170 10,8 9,7 8,1 6,7 5,6 4,7 3,8 3,2180 11,7 11,0 10,1 8,5 7,1 6,0 5,0 4,1 3,4 2,8190 12,5 11,8 11,2 10,4 8,8 7,4 6,3 5,3 4,4 3,7 3,0200 13,4 12,6 11,9 11,3 10,7 9,1 7,7 6,6 5,6 4,7 3,9210 14,3 13,4 12,7 12,0 11,4 10,8 9,4 8,0 6,8 5,8 4,9

Single spanDeflection during construction L/180 Deflection of finished floor L/300Concrete covering 25mm Concrete class LC 30/33End support width 50mm Internal support width 100mm

Number of props during construction Without prop 1 prop 2 props

Page 20: Cofraplus 77 - ArcelorMittal · 3 Further advantage The COFRAPLUS 77 is manufactured with a pre-coating, and consequently it is easy to provide the floor with the underface already

18

cofraplus 77 lsload span tables

Double spanDeflection during construction L/180 Deflection of finished floor L/300Concrete covering 25mm Concrete class LC 30/33End support width 50mm Internal support width 100mm

Number of props during construction Without prop 1 prop 2 props

Admissible load (kN/m²)Upper reinforcement 150x150x6x6

Rebar in the rib (mm/rib) 0

Thickness Slab depth (mm) Span (m)2,00 2,20 2,40 2,60 2,80 3,00 3,20 3,40 3,60 3,80 4,00

0,75

130 10,2 9,1 8,2 7,5 6,3 5,2 4,4 3,7 3,1 2,7 2,2140 11,1 10,0 9,0 8,1 6,9 5,8 4,8 4,1 3,4 2,9 2,4150 12,1 10,8 9,7 8,8 7,5 6,3 5,3 4,4 3,8 3,2 2,7160 13,0 11,6 10,5 9,5 8,1 6,8 5,7 4,8 4,1 3,4 2,9170 14,0 12,5 11,3 10,2 8,8 7,3 6,1 5,2 4,4 3,7 3,1180 14,9 13,3 12,0 10,9 9,4 7,8 6,6 5,5 4,7 3,9 3,3190 15,9 14,2 12,8 11,6 10,0 8,4 7,0 5,9 5,0 4,2 3,5200 16,8 15,0 13,5 11,9 10,3 8,9 7,5 6,3 5,3 4,4 3,7210 17,8 15,9 14,1 12,1 10,5 9,1 7,9 6,6 5,6 4,7 3,9

0,88

130 10,2 9,1 8,2 7,4 6,3 5,2 4,4 3,7 3,1 2,6 2,2140 11,1 9,9 9,0 8,1 6,9 5,8 4,8 4,1 3,4 2,9 2,4150 12,1 10,8 9,7 8,8 7,5 6,3 5,3 4,4 3,7 3,1 2,6160 13,0 11,6 10,5 9,5 8,1 6,8 5,7 4,8 4,0 3,4 2,9170 14,0 12,5 11,2 10,2 8,7 7,3 6,1 5,2 4,4 3,7 3,1180 14,9 13,3 12,0 10,9 9,4 7,8 6,6 5,5 4,7 3,9 3,3190 15,9 14,2 12,8 11,6 10,0 8,3 7,0 5,9 5,0 4,2 3,5200 16,8 15,0 13,5 12,3 10,6 8,9 7,4 6,3 5,3 4,4 3,7210 17,8 15,9 14,3 13,0 11,2 9,4 7,9 6,6 5,6 4,7 3,9

1,00

130 10,2 9,1 8,2 7,4 6,2 5,2 4,4 3,7 3,1 2,6 2,2140 11,1 9,9 8,9 8,1 6,9 5,7 4,8 4,1 3,4 2,9 2,4150 12,1 10,8 9,7 8,8 7,5 6,3 5,3 4,4 3,7 3,1 2,6160 13,0 11,6 10,5 9,5 8,1 6,8 5,7 4,8 4,0 3,4 2,8170 14,0 12,5 11,2 10,2 8,7 7,3 6,1 5,2 4,3 3,6 3,1180 14,9 13,3 12,0 10,9 9,3 7,8 6,6 5,5 4,6 3,9 3,3190 15,9 14,2 12,8 11,6 10,0 8,3 7,0 5,9 5,0 4,2 3,5200 16,8 15,0 13,5 12,3 10,6 8,8 7,4 6,2 5,3 4,4 3,7210 17,8 15,9 14,3 12,9 11,2 9,4 7,9 6,6 5,6 4,7 3,9

Upper reinforcement 150x150x8x8Rebar in the rib (mm/rib) 0

Thickness Slab depth (mm) Span (m)3,00 3,20 3,40 3,60 3,80 4,00 4,20 4,40 4,60 4,80 5,00

0,75

130 7,3 6,7 6,2 5,8 5,4 4,9 4,3 3,8140 7,6 7,1 6,5 6,1 5,7 5,3 4,8 4,2 3,7 3,2150 8,0 7,4 6,8 6,3 5,9 5,5 5,2 4,6 4,0 3,5 3,1160 8,4 7,7 7,1 6,6 6,1 5,7 5,4 5,0 4,4 3,8 3,4170 8,7 8,0 7,4 6,9 6,4 5,9 5,5 5,2 4,7 4,2 3,6180 9,1 8,4 7,7 7,2 6,7 6,2 5,8 5,4 5,1 4,5 3,9190 9,7 8,9 8,2 7,6 7,1 6,6 6,1 5,7 5,4 4,8 4,2200 10,3 9,4 8,7 8,1 7,5 7,0 6,5 6,1 5,7 5,1 4,5210 10,8 10,0 9,2 8,5 7,9 7,4 6,9 6,4 6,0 5,4 4,7

0,88

130 7,3 6,7 6,2 5,8 5,4 4,9 4,3 3,8140 7,6 7,0 6,5 6,1 5,6 5,3 4,8 4,2 3,7 3,2150 8,0 7,4 6,8 6,3 5,9 5,5 5,1 4,6 4,0 3,5 3,1160 8,4 7,7 7,1 6,6 6,1 5,7 5,3 5,0 4,4 3,8 3,4170 8,7 8,0 7,4 6,8 6,4 5,9 5,5 5,2 4,7 4,1 3,6180 9,1 8,4 7,7 7,2 6,6 6,2 5,8 5,4 5,1 4,4 3,9190 9,7 8,9 8,2 7,6 7,1 6,6 6,1 5,7 5,4 4,8 4,2200 10,2 9,4 8,7 8,1 7,5 7,0 6,5 6,1 5,7 5,1 4,4210 10,8 10,0 9,2 8,5 7,9 7,4 6,9 6,4 6,0 5,4 4,7

1,00

130 7,2 6,7 6,2 5,8 5,4 4,9 4,3 3,6140 7,6 7,0 6,5 6,0 5,6 5,3 4,8 4,2 3,7 3,2150 8,0 7,4 6,8 6,3 5,9 5,5 5,1 4,6 4,0 3,5 3,1160 8,3 7,7 7,1 6,6 6,1 5,7 5,3 5,0 4,4 3,8 3,3170 8,7 8,0 7,4 6,8 6,3 5,9 5,5 5,2 4,7 4,1 3,6180 9,1 8,4 7,7 7,1 6,6 6,2 5,8 5,4 5,0 4,4 3,9190 9,7 8,9 8,2 7,6 7,1 6,6 6,1 5,7 5,4 4,7 4,2200 10,2 9,4 8,7 8,0 7,5 7,0 6,5 6,1 5,7 5,0 4,4210 10,8 9,9 9,2 8,5 7,9 7,3 6,8 6,4 6,0 5,4 4,7

Upper reinforcement 150x150x8x8 + ø 8mm every 150mmRebar in the rib (mm/rib) 8

Thickness Slab depth (mm) Span (m)4,00 4,20 4,40 4,60 4,80 5,00 5,20 5,40 5,60 5,80 6,00

0,75

130 5,8 4,8 4,0140 7,1 6,4 5,4 4,5 3,8150 7,5 7,0 6,6 6,0 5,1 4,3 3,6160 7,8 7,3 6,9 6,5 6,1 5,6 4,8 4,1 3,5170 8,1 7,6 7,1 6,7 6,4 6,0 5,7 5,2 4,5 3,8180 8,4 7,9 7,4 7,0 6,6 6,2 5,9 5,6 5,3 4,9 4,2190 8,7 8,1 7,7 7,2 6,8 6,4 6,1 5,7 5,4 5,2 4,9200 9,0 8,4 7,9 7,4 7,0 6,6 6,2 5,9 5,6 5,3 5,0210 9,2 8,7 8,1 7,6 7,2 6,8 6,4 6,1 5,7 5,4 5,1

0,88

130 6,8 5,0 4,1140 7,1 6,7 5,6 4,7 4,0150 7,4 7,0 6,6 6,2 5,3 4,5 3,8160 7,8 7,3 6,9 6,5 6,1 5,8 5,0 4,3 3,6170 8,1 7,6 7,1 6,7 6,3 6,0 5,7 5,4 4,7 4,0180 8,4 7,9 7,4 7,0 6,6 6,2 5,9 5,6 5,3 5,0 4,4190 8,7 8,1 7,6 7,2 6,8 6,4 6,0 5,7 5,4 5,1 4,9200 9,0 8,4 7,9 7,4 7,0 6,6 6,2 5,9 5,6 5,3 5,0210 9,2 8,6 8,1 7,6 7,2 6,8 6,4 6,0 5,7 5,4 5,1

1,00

130 6,7 6,3 5,6140 7,1 6,7 5,8 4,9 4,1150 7,4 7,0 6,6 6,2 5,5 4,7 4,0160 7,8 7,3 6,9 6,5 6,1 5,8 5,2 4,4 3,8170 8,1 7,6 7,1 6,7 6,3 6,0 5,7 5,4 4,9 4,2180 8,4 7,8 7,4 6,9 6,5 6,2 5,8 5,5 5,2 5,0 4,6190 8,7 8,1 7,6 7,2 6,8 6,4 6,0 5,7 5,4 5,1 4,9200 8,9 8,4 7,9 7,4 7,0 6,6 6,2 5,9 5,6 5,3 5,0210 9,2 8,6 8,1 7,6 7,2 6,8 6,4 6,0 5,7 5,4 5,1

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19

cofraplus 77 ls load span tables

Multi-spanDeflection during construction L/180 Deflection of finished floor L/300Concrete covering 25mm Concrete class LC 30/33End support width 50mm Internal support width 100mm

Number of props during construction Without prop 1 prop 2 props

Admissible load (kN/m²)Upper reinforcement 150x150x6x6

Rebar in the rib (mm/rib) 0

Thickness Slab depth (mm) Span (m)2,00 2,20 2,40 2,60 2,80 3,00 3,20 3,40 3,60 3,80 4,00

0,75

130 10,3 9,2 8,3 7,6 6,9 6,0 5,1 4,3 3,7 3,2 2,7140 11,3 10,1 9,1 8,3 7,6 6,6 5,6 4,8 4,1 3,5 3,0150 12,3 11,0 9,9 9,0 8,2 7,2 6,1 5,2 4,4 3,8 3,3160 13,2 11,8 10,7 9,7 8,8 7,7 6,6 5,6 4,8 4,1 3,5170 14,2 12,7 11,4 10,4 9,3 8,1 7,1 6,0 5,2 4,4 3,8180 15,2 13,6 12,2 11,0 9,5 8,2 7,2 6,3 5,5 4,7 4,1190 16,1 14,4 13,0 11,2 9,7 8,4 7,3 6,4 5,7 5,0 4,3200 17,1 15,3 13,4 11,4 9,8 8,5 7,5 6,5 5,8 5,1 4,5210 18,1 16,1 13,6 11,6 10,0 8,7 7,6 6,7 5,9 5,2 4,6

0,88

130 10,3 9,2 8,3 7,6 6,9 6,0 5,1 4,3 3,7 3,0 2,6140 11,3 10,1 9,1 8,3 7,5 6,5 5,6 4,7 4,1 3,3 2,8150 12,2 11,0 9,9 9,0 8,2 7,1 6,1 5,2 4,4 3,6 3,3160 13,2 11,8 10,7 9,7 8,8 7,7 6,6 5,6 4,8 3,9 3,5170 14,2 12,7 11,4 10,4 9,5 8,3 7,1 6,0 5,2 4,4 3,8180 15,1 13,5 12,2 11,1 10,1 8,9 7,6 6,5 5,5 4,7 4,1190 16,1 14,4 13,0 11,8 10,7 9,5 8,1 6,9 5,9 5,0 4,3200 17,1 15,3 13,8 12,5 11,2 9,7 8,5 7,3 6,3 5,4 4,6210 18,0 16,1 14,5 13,2 11,4 9,9 8,6 7,6 6,6 5,7 4,9

1,00

130 10,3 9,2 8,3 7,5 6,9 5,9 5,0 4,3 3,7 3,2 2,7140 11,3 10,1 9,1 8,2 7,5 6,5 5,6 4,7 4,1 3,5 3,0150 12,2 10,9 9,9 9,0 8,2 7,1 6,1 5,2 4,4 3,8 3,2160 13,2 11,8 10,6 9,7 8,8 7,7 6,6 5,6 4,8 4,1 3,5170 14,2 12,7 11,4 10,4 9,5 8,3 7,1 6,0 5,1 4,4 3,8180 15,1 13,5 12,2 11,1 10,1 8,9 7,6 6,4 5,5 4,7 4,1190 16,1 14,4 13,0 11,8 10,7 9,5 8,1 6,9 5,9 5,0 4,3200 17,1 15,3 13,7 12,5 11,4 10,1 8,6 7,3 6,2 5,4 4,6210 18,0 16,1 14,5 13,2 12,0 10,7 9,1 7,7 6,6 5,7 4,9

Upper reinforcement 150x150x8x8Rebar in the rib (mm/rib) 0

Thickness Slab depth (mm) Span (m)3,00 3,20 3,40 3,60 3,80 4,00 4,20 4,40 4,60 4,80 5,00

0,75

130 7,4 6,8 6,3 5,9 5,5 5,1 4,2 3,5140 7,8 7,2 6,7 6,2 5,8 5,4 5,0 4,7 3,9 3,2150 8,2 7,5 7,0 6,5 6,0 5,6 5,3 4,9 4,6 4,2 3,6160 8,5 7,8 7,3 6,7 6,3 5,9 5,5 5,1 4,8 4,5 4,1170 8,9 8,2 7,5 7,0 6,5 6,1 5,7 5,3 5,0 4,7 4,4180 9,3 8,5 7,9 7,3 6,8 6,3 5,9 5,5 5,2 4,9 4,6190 9,9 9,1 8,4 7,8 7,2 6,7 6,3 5,9 5,5 5,2 4,9200 10,5 9,6 8,9 8,2 7,7 7,1 6,7 6,2 5,8 5,5 5,1210 11,0 10,2 9,4 8,7 8,1 7,5 7,0 6,6 6,2 5,8 5,4

0,88

130 7,4 6,8 6,3 5,9 5,3 4,9 4,4 3,6140 7,8 7,2 6,6 6,2 5,6 5,2 5,0 4,7 4,1 3,4150 8,1 7,5 7,0 6,5 5,8 5,6 5,3 4,9 4,6 4,2 3,7160 8,5 7,8 7,2 6,7 6,1 5,8 5,5 5,1 4,8 4,5 4,1170 8,8 8,1 7,5 7,0 6,5 6,1 5,7 5,3 5,0 4,7 4,4180 9,3 8,5 7,9 7,3 6,8 6,3 5,9 5,5 5,2 4,9 4,6190 9,9 9,1 8,4 7,8 7,2 6,7 6,3 5,9 5,5 5,2 4,8200 10,4 9,6 8,9 8,2 7,6 7,1 6,6 6,2 5,8 5,5 5,1210 11,0 10,1 9,4 8,7 8,1 7,5 7,0 6,6 6,1 5,8 5,4

1,00

130 7,4 6,8 6,3 5,9 5,5 5,1 4,6 4,2 3,7140 7,8 7,2 6,6 6,2 5,7 5,4 4,8 4,5 4,3 3,6150 8,1 7,5 6,9 6,4 6,0 5,6 5,0 4,7 4,6 4,2 3,7160 8,5 7,8 7,2 6,7 6,2 5,8 5,2 5,1 4,8 4,5 4,1170 8,8 8,1 7,5 7,0 6,5 6,0 5,4 5,3 5,0 4,6 4,4180 9,3 8,5 7,9 7,3 6,8 6,3 5,9 5,5 5,2 4,8 4,6190 9,8 9,1 8,4 7,8 7,2 6,7 6,3 5,9 5,5 5,1 4,8200 10,4 9,6 8,9 8,2 7,6 7,1 6,6 6,2 5,8 5,4 5,1210 11,0 10,1 9,4 8,7 8,1 7,5 7,0 6,5 6,1 5,8 5,4

Upper reinforcement 150x150x8x8 + ø 8mm every 150mmRebar in the rib (mm/rib) 8

Thickness Slab depth (mm) Span (m)4,00 4,20 4,40 4,60 4,80 5,00 5,20 5,40 5,60 5,80 6,00

0,75

130 5,3 4,4 3,6140 7,1 5,9 4,9 4,1 3,4150 7,6 7,1 6,5 5,5 4,6 3,9 3,2160 7,9 7,4 7,0 6,6 6,0 5,1 4,3 3,6 3,0170 8,2 7,7 7,3 6,9 6,5 6,1 5,5 4,7 4,0 3,4180 8,6 8,0 7,6 7,1 6,7 6,3 6,0 5,7 5,1 4,3 3,7190 8,9 8,3 7,8 7,4 6,9 6,6 6,2 5,9 5,6 5,3 4,7200 9,1 8,6 8,1 7,6 7,1 6,7 6,4 6,0 5,7 5,4 5,2210 9,4 8,8 8,3 7,8 7,4 6,9 6,6 6,2 5,9 5,6 5,3

0,88

130 6,7 4,5 3,8140 7,0 6,1 5,1 4,3 3,6150 7,6 7,1 6,7 5,7 4,8 4,0 3,4160 7,9 7,4 7,0 6,6 6,2 5,3 4,5 3,8 3,2170 8,2 7,7 7,3 6,9 6,5 6,1 5,8 4,9 4,2 3,6180 8,5 8,0 7,5 7,1 6,7 6,3 6,0 5,7 5,3 4,6 3,9190 8,8 8,3 7,8 7,3 6,9 6,5 6,2 5,9 5,6 5,3 4,9200 9,1 8,6 8,0 7,6 7,1 6,7 6,4 6,0 5,7 5,4 5,1210 9,4 8,8 8,3 7,8 7,3 6,9 6,5 6,2 5,9 5,6 5,3

1,00

130 6,9 6,1 5,3 4,6140 7,2 6,6 6,2 4,4 3,7150 7,6 6,9 6,5 5,9 5,0 4,2 3,5160 7,9 7,2 7,0 6,6 6,2 5,5 4,7 4,0 3,3170 8,2 7,5 7,3 6,8 6,5 6,1 5,8 5,1 4,4 3,7180 8,5 8,0 7,5 7,1 6,7 6,3 6,0 5,7 5,4 4,8 4,1190 8,8 8,3 7,8 7,3 6,9 6,5 6,2 5,8 5,5 5,3 5,0200 9,1 8,5 8,0 7,6 7,1 6,7 6,4 6,0 5,7 5,4 5,1210 9,4 8,8 8,3 7,8 7,3 6,9 6,5 6,2 5,8 5,5 5,3

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20

cofraplus 77 Physical properties

Physical properties1. RESISTANCE TO FIRE

It is generally accepted that composite floors have a fire resistance of 30 minutes.An increase of this fire resistance can be obtained by: - installing a protective false ceiling- placing a protective material on the lower face;- Additional reinforcement incorporated in to the concrete.

After 30 minutes, those reinforcements must take over the part of the steel sheet considered as inactive. (They are calculated according to EN 1994-1-2).

2. THERMAL INSULATION

The thermal insulation of a floor is easily calculated in function of the thickness of the slab. However, a superior performance can be obtained by installing a thermal insulate under the coating, or by putting insulation below the ceiling. Another solution is to use a light structural concrete, but in this case, it would always be necessary to consult us to obtain the load-bearing capabilities of the floor thus resulting.

3.SOUND INSULATION

The finished floor presents a reduction in sound proportionate to its mass. One could therefore say that this floor has similar characteristics to a normal slab of the equivalent thickness.

4. RESISTANCE TO SHOCK WAVES

The composite floor, having a dead weight less than that of an equivalent slab of reinforced concrete, presents immediate advantages from the point of view of seismic shock, since these are directly proportional to the dead weight.This floor can additionally take on the role of a diaphragm, and in this case, the constructional elements will be adapted. Notably, the profile will be fixed on to all the supports and an adequate number of connectors will be used on these supports. This number is determined in proportion to horizontal waves to be transmitted.

Kennedy Tower [Eindhoven - NL]

Page 23: Cofraplus 77 - ArcelorMittal · 3 Further advantage The COFRAPLUS 77 is manufactured with a pre-coating, and consequently it is easy to provide the floor with the underface already

21

cofraplus 77Calculation notes

Calculation notesThe load tables presented in chapter 4 have been established by means of a computerised programme which allows us to give you, if needed, a note of supporting calculations.

The data given are divided into two categories:On the one part, the appropriate data for each case, i.e.:

- total thickness of floor,- thickness of the sheet,- spans,- number of supports,- amount of extra weight which might be considered as

permanent (paving, tilling,…);

And on the other part, fixed data, that are standard introduced values, which can be modified if required:

- elasticity limit of steel: 320 N/mm²- module of elasticity: E=210000 N/mm²- factors m= 138.3 and k = 0.0446 (normal concrete) factors m= 183,9 and k = -0,0944 (light concrete)

- characteristics of the concrete–F Ck = 2 25,00 N/mm² (normal concrete) 30.00 N/mm² (light concrete)–E cm = 31000 N/mm² (normal concrete) 22090 N/mm² (light concrete)– factor of safety gp = g G = 1,35 (dead weight and permanent loads) g q = 1,5 (live load) - limit of deformation: f/l ≤ 1/300

The programme verifies the three criteria :-longitudinal shear-vertical shear-bending resistance

And it calculates, in the case of continuity, the section of steel reinforcement necessary, or an application to meet the specification, or compensates for the extra acceptable weight.

These calculations are prepared with and without stiffening.

"REYERS B" • arch: ASSAR • contractor Louis De Waele

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cofraplus 77 Renovations

RenovationsBesides the usual application of new constructions, this product is also very well adapted for renovations. The steel sheets are very easy to place by hand and even at some places that are difficult to access. Thanks to the trapezoidal shape of the sheet, one can save on the proper weight of the construction and thus limit the over charge of the foundations.

« renovation in Brussels » Contractor : Lixon

Castle of Seneffre-Contractor: Lixon VT4 Zaventem: Arch: Styfhals & Partners - DSW Contractor : De Meyer

VT4 » Zaventem Arch Styfhald & Partners – DSW - Contractor : De Meyer

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cofraplus 77Packing, handling, storage, transportation

Packing, handling, storage, transportationPACKING

The ARVAL by ArcelorMittal sheets are packed in the following manner: They are generally used for direct transportation from the factory to construction sites, in preference without any intermediate transfer.

The cradles and collars are spaced out in a regular and adequate fashion in accordance with the type of profile and the length. In all cases they allow transportation and stacking of the load ‘timber to timber’ to avoid any damage to the sheets.

STANDARD PACKING OF SHEETS

The maximum weight is 2.700 kg for a load of 15 sheets of 14 m.

Max. length: 20.0mThicknesses: 0,75 0,88 1,00Number of sheets 15 15 15

HANDLING

It is strongly recommended to slide slings under the cradles in order to avoid gouging the edges of the sheets, which would cause difficulties in fixing. The loads of sheets, especially the longer lengths, would be handled preferably by overhead travelling crane (in the factory), or by crane (on the site), using a suitable swing-bar and equipped with hemp slings, or similar.

Circular cable or chains are prohibited in all cases. At the time of handling by fork-lift truck (method not recommended), it is necessary to ensure that its power is sufficient when considering weights of the loads, and that the forks are wide enough and thick enough and that the load is balanced.

STORAGE

The galvanised and prepainted sheets must be stored under cover, away from atmospheric influence (water, snow, sun, etc.). The loads will be placed with a light longitudinal slope, allowing good ventilation to avoid condensation. It is not advised to keep sheets under tarpaulins for long periods. The best method is to store in a dry and closed area at a constant temperature.

TRANSPORTATION

Our sales are stated to be ex. works, except unless otherwise stated. This is a condition of sale and acceptance of order.

In exceptional cases, the deliveries are made as a concession to the customer, and the goods travel at client’s risk. All eventual claims on deliveries must, to be accepted, be consigned under the letter C.M.R. of the haulier, and signed by the recipient at the moment of delivery.

The confirmation with the precise details of the claim must be received in writing by recorded delivery within three working days. In the case of hidden defects, the delay is seven days. Outside these periods, the claim will not be accepted.

Longueur max. /Max. lengte : 20,0 m

Epaisseurs / Dikten 0,75 0,88 1,00Nombre de tôles /Aantal platen 20 20 20

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cofraplus 77 The order

The order TO EASE THE ORDER

In order to help you with the specifications of your order, we suggest you to use our specially designed order forms. You just have to enclose them to your documents. It helps you to define your standards, rapidly and efficiently, and it can help you to avoid mistakes and oblivions. You can also order all your flashings at the same time. Those flashings, coming from the same coils, are guaranteed of good quality and high compatibility with all the components. In this field, a specific order form also exists (please contact our commercial service). The sheets are produced according to the lengths demanded by the contractor, with a working width of 768mm and lengths of spans or overlaps recommended here above.

THE SERVICE

Our commercial team and technically skilled engineers combine high quality service and experience to rapidly and efficiently respond to all commercial and technical queries concerning the product, and or its use.

If you wish to discuss your technical needs in greater detail, our engineers are at your service..

Private House, contractor Cuylaerts

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cofraplus 77The order

Date:

QUESTIONNAIRE

YOUR COORDINATES

Company

Applicant

Project Surface area

Phone Fax

SPAN: YOUR SITUATION

Single span l : m

Double span l 1: m l 2: m

Triple span l 1: m l 2: m l 3: m

Service loads: kN/m2

Permanent loads: kN/m2 (without own weight of the slab)

Total wished thickness of the composite floor: cm

Maximum deflection (if tiling, min L/500):

Fire resistance :

Possibility of propping when pouring the concrete Yes No

For any other case of loads, please give us a detailed plan.

l

l1 l 2

l1 l 2 l 3

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ArcelorMittal Construction Belgium NVwww.arcelormittal.com/arval

T +32 4 240 67 11T +32 14 56 39 15

F +32 14 59 27 10

Arval Site GeelIndustrieterrein Geel West – Z4Lammerdries 8B-2440 Geel

Arval Site FleurusZ.I. de MartinrouRue de Berlaimont 21B-6220 Fleurus

Arval Site MalmedyZ.I. Avenue de Norvège 16B-4960 Malmedy

ArcelorMittal Construction applies a policy of continuous development. ArcelorMittal Construction reserves the right to make changes and improvements to any of the products and information in this document without prior notice. Although care has been taken during the development of this catalogue, we regret that we cannot accept liability in respect of any incorrectness It may contain nor any damage which may arise trough misinterpretation of its contents.

All rights reserved! No part of this publication may be reproduced in any forms and any means without permission in writing from ArcelorMittal Construction.