FORMWORK SYSTEMS - Cofresa

FORMWORKSYSTEMS

0202

Light RangeLi

ght R

ange

Light, easy-to-handle formwork for pillars and small walls

Metal-only formwork system offering a resistance of 35 kNw/m2, with a maximum deformation for this pressure level of under 3 mm.

MULTIPORPOSE PANELS

The LIGHT RANGE panels have holes punched in them, so that each panel can be used to erect pillars of different widths. Depending on the panel width, they can be used for both square and rectangular pillars, with si-des measuring between 250 mm and 700 mm, with 50 mm increments (4 panel assembly; see table).

The 600 and 750 mm wide panels are known as the REINFORCED LIGHT RANGE, because they are suitably reinforced in line with the resistance they have to offer.

STANDARD MEASUREMENTS

Standard heights: 3.000/2.700/2.600/1.500/1.250 mm. (may be combined for greater heights).

Standard widths: See table.

THE ADVANTAGES OF THE COFRESA LIGHT RANGE

1) SECURED BY BOLT + WOODRUFF KEY (FLAT KEY ON WALLS) Very simple and quick to put in place. Key fixed securely on bolt. Key inexpensive to replace.

2) ROUNDED EDGESThe reinforcement provided by the series of holes is rounded, and is therefore easy to keep clean.

3) SYMMETRICAL PANEL The distance from the upper bolt to the edge of the panel is the same as the distance from the lower bolt to the edge of the panel.

Pillar with500 x 3.000 mm.panels.

0303

Pillar combining500 x 3.000 mm. panels

and 750 x 3.000 mm. reinforcement.

Woodruff key used to join panels

perpendicularly, flat key used to join

them in parallel

Ligh

t Ran

ge

WIDTH OF PANEL (mm.) LENGTH OF SIDES OF PILLAR (mm.)

250 FOR ASSEMBLY OF DIVIDING WALLS ONLY

300 250

350 250, 300

400 250, 300, 350

450 250, 300, 350, 400

500 250, 300, 350, 400, 450

600 350, 400, 450, 500, 550

750 500, 550, 600 ,650, 700

LIGHT RANGE ROUND FORMWORK

The LIGHT RANGE round metal formwork is made from 2 mm. curved sheeting, suitably reinforced. Each one consists of two half-tubes, joined to-gether with a welded bolt + flat key to form the round formwork.

Standard heights: 3.000, 1.500, 1.000 mm. Diame-ters from 250 mm, with 50 mm increments.

Light Range roundformwork.

0404

250

to 4

50 m

m.

Ligh

t Ran

ge

Allowable Pressure 35 kN/m2

Sheet Thickness 2 mm.

Frames/Profiles 40 x 20 y 40 x 10 mm x mm.

Reinforcement 2 mm. thick

Weight of Panel (approx.) 29 kg/m2

Weight of Panel + Acces. (approx.) 29.2 kg/m2

Standard Measurements 500 x 1.250, 500 x 1.500, 500 x 2.600,

500 x 2.700 and 500 x 3.000 mm. x mm.

TECHNICAL DATA PANEL V/82-B

HALF-OVAL PILLAR SOLUTION

PILLAR SOLUTION WITH LENGTHS (TONGUE/TONGUE JOINT)

SOLUTION FOR DIVIDING WALL PILLARS

PILLAR SOLUTION WITH LENGTHS (TONGUE/GROOVE JOINT)

OVAL PILLAR SOLUTION

70 to

220

mm

.

250

to 4

50 m

m.

250

to 4

50 m

m.

520 to 720 mm.

Cross bolt +flat key

Cross bolt +flat key

flat key

flat key

flat k

ey

Crossbolt+Woodruff key

750 to 950 mm.

400 mm.

Phorexpan

Wall

Exact width

Exac

t wid

th

0505

Ligh

t Ran

ge

PANEL FOR LIGHT RANGE& REINFORCED LIGHT RANGE

BRACES FOR ONE SIDE OF WALL

REF. NO.ITEM

REF. NO.ITEM

WEIGHTKg.

BREAKDOWN OF LIGHT RANGE

PVC ACCESSORIES

REF. NO.ITEM

REF. NO.ITEM

WEIGHTKg.

WEIGHTKg.

WEIGHTKg.

Ask for different measurements

ACCESSORIES FOR PANEL JOINTS

Dywidag Ø 12.5 mm. 1.000 mm. 3000847 0,90 Dywidag Ø 12.5 mm. 600 mm. 3000854 0,56

Ø 50 mm. nuts for Ø 12.5 mm. thread 3000831 0,20

Connecting bolt: to join panels at top 3000855 0,04

Cross bolt: to join panels at groove sides 3000845 0,06

Spare bolt: to replace the bolt welded to the panel 3000842 0,07

Flat key 3000832 0,052

Woodruff key 3000833 0,052

Panel/brace fastening with Ø 15.5 mm. Dywidag 3000836 0,30

Ø 95 mm. wingnuts for Ø 15.5 mm. Dywidag bar 3000415 0,60

Light range standard panels 500 x 3.000 mm. 3000798 45 500 x 2.700 mm. 3000807 42 500 x 2.600 mm. 3000811 40 500 x 1.500 mm. 3000794 23 500 x 1.250 mm. 3000791 19

Reinforced light range standard panels 750 x 3.000 (2,25 m2) 3000890 81 750 x 2.700 (2,02 m2) 3000881 74 750 x 2.600 (1,95 m2) 3000885 73 750 x 1.500 (1,13 m2) 3000884 41 750 x 1.250 (0,94 m2) 3000909 40 600 x 3.000 (1,80 m2) 3000906 65 600 x 2.700 (1,62 m2) 3000891 61 600 x 2.600 (1,56 m2) 3000907 58 600 x 1.500 (0,90 m2) 3000894 58 600 x 1.250 (0,75 m2) 3000910 31

Braces 3.000 mm. 3000470 60 Parapet 3000496 2,5

Stiffener for both sides of wall 3.000 mm. 3000477 22

Ø 22 mm. PVC tube 3000436

End cone for ends of PVC tube 3000520

Ø 16 mm. stopper for front hole 3000849

NB: Weights are approximate.

0606

Unfinished assembly of wall with formwork on

both sides. Note that screens at different ground levels have

been joined together.

Formwork face of screens. Note good finish of concrete.

heavy RangeHe

avy

Rang

e

The simplest way to erect vertical concrete structures, with a minimum of parts and accessories for easier assembly and control. This is a complete, metal-only range with low maintenance costs, ideal for high-speed work.

SCREEN

The formwork screens in the Heavy Range con-sist of a metal frame, to which a 3 mm thick steel sheet is welded. The profiles which make up the frame of the screen have a groove running along the whole of the inner rim of the frame, so that screens with clamps can be joined quickly, safely and with no need for fixed positioning (screens on ground of different levels can be joined toge-ther).


Standard heights: 3.000/1.500/1.000 mm.Standard widths: 2.400, 1000, 900, 800, 700, 600, 500, 400, 300, 200 mm.

CAST IRON CORNER

To extend the life of the screen, a cast iron cornerpiece is used instead of forming corners by welding together the profiles of the frame at an angle. This cornerpiece has a recess, so that a bar can be inserted to plumb, move or remove the formwork without damaging the frame of the screen.

The resistance of the Heavy Range is 70 kNw/m2, with a maximum deformation for this pressure level of under 3 mm.

0707

Assembly of formwork for both sides of wall using the Heavy Range.

Heav

y Ra

nge

JOINING SCREENS: HEAVY RANGE FIXED CLAMP

The Heavy Range fixed clamp is the piece which brings together, aligns and joins two screens quickly, with a hammer blow to the wedge. To release, simply hit in the opposite direction to the wedge. Guarantees fast, safe assembly, and allows any layout (there is no fixed joint, as the joint is along the groove made in the frame for this purpose).

The Heavy Range extendable clamp is used when there is another component between the screens to be joined together (connecting profile, wood, etc.). Its opening and closing system uses a spindle, and can accommodate measurements between 50 mm. and 230 mm. approx.

The Heavy Range short extendable corner clamp is designed to join internal corners, and therefore has only one arm.

The Heavy Range clamps are different from those of the Cofenol Range, so although they can also be used with the Cofenol Range if attached outside the profile (providing less alignment), it is advisable to use the correct clamp in each Range.

OTHER JOINING COMPONENTS: DYWIDAG + NUT

Thanks to the side holes lining in all 4 sides of the screens, they can be joined together using a 15.5 mm. dia-meter Dywidag bar and a hexagonal nut. Although this type of joint is cheaper than a clamp joint, three times as many joints are needed, they are slower to make, and they do not align the screens.

TENSIONERS FOR BOTH SIDES OF WALL

For walls with formwork on both sides, a 15.5 mm. diameter Dywidag bar must be placed across the wall, with a 95 mm. pad nut.

SOLUTIONS FOR CORNERS

With internal angles either fixed at 90° or hinged (between 70° and 150°), and fixed or hinged external angles, we can provide solutions for almost any corner that may be required on site.

0808

1.000

mm

.

Parapet

Work bracket

700 mm.

(1)

Heav

y Ra

nge

SPACERS

For spacing in a wall of a required length, a connecting profile can be placed between the screens if the space is a multiple of 50 mm. This must be atta-ched using an extendable clamp or a Dywidag bar and hexagonal nut.

For spaces between 100 and 400 mm., a spacer sheet is used (variable measurement: can be adjusted millimetre by millimetre). Stiffeners must be attached for correct use.

SAFETY AT HEIGHTS

Using the work bracket and the parapet, we can construct a 700 mm. walkway at the edge of the formwork. This provides access to work areas, and the safety neces-sary to work at heights.

HOISTING TOOL

Hoisting tools are the accessories needed to handle the formwork safely using cranes. Sheets of for-mwork measuring more than 12 square metres should not be lifted. The thread must be inserted into the hole for safety.

Spacer sheet and connecting

profile

0909

One-sided wall with 3 and 6-metre braces.

One-sided wall, 3 metres high, using the lower part of the 6-metre brace.

Heav

y Ra

nge

WALL BRACED ON ONE SIDE

To make one-sided walls both safely and quickly, there are braces measuring 3, 4 and 6 metres high. These braces (which are the same as the Light and Cofenol Series) must be used with the screens in horizontal po-sition, fitting four braces for every three linear metres of formwork, so they form one single body that can be moved as a block to the concrete work. If the screens have to be fitted vertically, due to site needs, Cofresa stiffeners will have to be placed horizontally between the screens and the braces, respecting the proportion of 4 braces for every 3 linear metres of formwork.

The braces have been calculated and designed to guarantee the same resistance limits as the rest of the heavy series (70 KNw/m2 with 3mm maximum warping). However, and as the design has only been calculated for assem-bly with Cofresa formwork, the braces must be exclusively used in Cofresa formwork systems as correct functioning is not gua-ranteed with other makes of screens. The 6-metre brace is comprised of two 3-metre high bodies, which can be mounted independently to form 3-metre walls (see photo).

1010

oval pillar with heavy range wall screens and heavy range round formwork

Heav

y Ra

nge

SCREEN FOR PILLAR WALL

These have a series of holes which can be used to combine 600 and 1000 mm screens to construct concrete pillars from 250 mm to any multiple of 50 mm (the 600 screen gives us 250-450 mm, while the 1.000 screen gives us 500-850 mm). The joint is made using a pillar hook, Dywidag bar and 95 mm pad nut (see detail).

These screens are fully compatible with the Heavy Range for wall construction.

Assembly of formwork for pillar using Wall/Pillar screen.

1111

Heav

y Ra

ngeSheet Thickness 3 mm.

Frame/Profiles 100 x 50 y 80 x 40 mm. x mm.

TWO DIRECTIONS lining profiles (side & front)


Maximum Allowable Deformation 3 mm.

No. of Tie Rods (width 1000 mm.) 4 tie rods = 1.3 tie rods/m2

Weight of Screen (approx.) 47.5 kg/m2

Weight of Screen + Acces. (approx.) 52.5 kg/m2

Standard Measurements 1.000 x 3.000, 600 x 3.000, 500 x 3.000,

400 x 3.000, 300 x 3.000 mm. x mm.

TECHNICAL DATA OF HEAVY RANGE WALL SCREEN

Sheet Thickness 3 mm. (4 mm. on request.)

Frame/Profiles 100 x 50, 100 x 80, 80 x 40 mm. x mm.




No. of Tie Rods 6 tie rods = 0.83 tie rods/m2


Weight of Screen + Acces. (approx.) 56.7 kg/m2

Standard Measurements 2400 x 3.000 mm. x mm.

TECHNICAL DATA OF HEAVY RANGE LARGE WALL SCREEN

Sheet Thickness 3 mm.

Frame/Profiles 100 x 50, 80 x 40 mm. x mm.


Series of 24 mm-diameter holes number: 8 or 6 (depending on width)



No. of Tie Rods (width 1000 mm.) 4 tie rods = 1.3 tie rods/m2


Weight of Screen + Acces. (approx.) 54 kg/m2

Standard Measurements 1.000 x 3.000, 600 x 3.000, 1.000 x 1.500,

600 x 1500, mm. x mm.

TECHNICAL DATA OF HEAVY RANGE WALL/PILLAR SCREEN

1212

Heav

y Ra

nge

Dywidag Ø 15.5 mm. 250 mm. 3000420 0,3 1.000 mm. 3000390 1,4 1.500 mm. 3000400 2,1 6.000 mm. 3000416 1,4/m.

PILLAR HOOK 3000445 2,3

Heavy range fixed clamp 3000515 6

Heavy range extended clamp 3000517 6,5

Heavy range short extendable corner clamp 3000519 5

Heavy range short fixed clamp 3009878 4,5

Angle screen joint 3000427 0,3

SPACER ACCESSORIES

HEAVY RANGE SCREENS REF. NO.ITEM

REF. NO.ITEM

BREAKDOWN OF HEAVY RANGE

Screens for wall 1.000 x 3.000 mm. (3 m2) 3000587 145 600 x 3.000 mm. (1.8 m2) 3000588 99 500 x 3.000 mm. (1.5 m2) 3000560 85 400 x 3.000 mm. (1.2 m2) 3000586 66 300 x 3.000 mm. (0.9 m2) 3000563 50

800 x 3.000 mm. (2.4 m2) 3000576 132 700 x 3.000 mm. (2.1 m2) 3000605 116 200 x 3.000 mm. (0.6 m2) 3000599 33 1.000 x 1.500 mm. (1.5 m2) 3000562 80 500 x 1.500 mm. (0.75 m2) 3000561 45 1.000 x 1.000 mm. (1 m2) 3000603 55 500 x 1.000 mm. (0.5 m2) 3000608 35

2.400 x 3.000 mm. (7.2 m2) 3000575 385

Screens for pillars And wall 1.000 x 3.000 mm. (3 m2) 3000624 155 600 x 3.000 mm. (1.8 m2) 3000622 84 1.000 x 1.500 mm. (1.5 m2) 3000623 85 600 x 1.500 mm. (0.9 m2) 3000621 53

Spacer sheet 500 x 3.000 mm. 3000473 49 500 x 1.500 mm. 3000502 33 500 x 1.000 mm. 3000476 16

Connecting profile 50 x 100 x 3.000 mm. 3000461 14 50 x 100 x 1.500 mm. 3000493 9 50 x 100 x 1.000 mm. 3000456 5

PVC ACCESSORIES

HOISTING COMPONENTS

REF. NO.ITEM

REF. NO.ITEM

REF. NO.ITEM

PVC tube 3000436

End cone for ends of PVC tube 3000520

Ø 25 mm. plug for front hole 3000387

ø 25 mm. plug for side hole 3000431

Hoisting tool 3000433 7,5


ACCESSORIES FOR SCREEN JOINTSWEIGHTKg.

WEIGHTKg.

WEIGHTKg.

WEIGHTKg.

WEIGHTKg.

1313

Heav

y Ra

nge

BREAKDOWN OF HEAVY RANGE

WORK ACCESSORIES

CORNER ACCESSORIES REF. NO.ITEM

REF. NO.ITEM

90º Internal cornerpiece 200 x 200 x 3.000 3000491 80 200 x 200 x 1.500 3000490 43 200 x 200 x 1.000 3000489 28

Hinged internal cornerpiece 200 x 200 x 3.000 3000481 74

90º External angle 100 x 100 x 3.000 3000464 45 100 x 100 x 1.500 3000459 22 100 x 100 x 1.000 30004460 15

Hinged external angle 100 x 100 x 3.000 3000463 31

Work bracket 700 mm. 3000465 8

Parapet 3000496 2,5

3000465 14

Parapet 3000496 2,5

3000468 11


REF. NO.ITEM

SUPPORT BRACES FOR ONE SIDE OF WALL

OTHER ACCESSORIES REF. NO.ITEM

Anchor for side hole 3000404 0,4

Anchor for front hole 3000398 0,4

Hexagonal nut for 15.5 mm. dywidag bar 3000428 0,2

ø 95 mm. wingnut for ø 15.5 mm. bar 3000415 0,6

STIFFENERS REF. NO.ITEM

Stiffener 3.000 mm. 3000477 20

WEIGHTKg.

WEIGHTKg.

WEIGHTKg.

WEIGHTKg.

WEIGHTKg.

Braces 3.000 mm. 3000470 51 4.000 mm. 3000469 95 Parapet 3000496 2,5

Comprised of two 3-metre high bodies 6.000 mm. 3000471 250

Ask for different measurements

1414 Cofenol Range extendable clamp.

CofenoL RangeCo

feno

l Ran

ge

The simplest way to erect vertical concrete structures, with a minimum of parts and accessories for easier assembly and control. Its phenolic wood panel can be replaced when necessary. The Cofenol Range shares all the accessories of the Heavy Range, apart from clamps. This means that the two ranges can be combined.

SCREEN

The Cofenol Range formwork screens consist of a metal frame, to which a 15 mm. thick phenolic panel is fixed. The profiles which make up the frame of the screen are designed by Cofresa, and have a groove running along the who-le of the inner rim the frame, so that screens with clamps can be joined quickly, safely and with no need for fixed positioning (screens on ground of different levels can be joined together).

The resistance of Cofenol Range is 50 kNw/m2, with a maximum deformation for this pressure level of under 3 mm.


Standard heights: 3.000/1.500/1.000 mm.Standard widths: 2400, 1.000, 900, 800, 700, 600, 500, 400, 300, 200 mm.

JOINING SCREENS: COFENOL RANGE CLAMP

The Cofenol Range fixed clamp is the piece which brings together, aligns and joins two screens quickly, with a ham-mer blow to the wedge. To release, simply hit in the opposi-te direction to the wedge. Guarantees fast, safe assembly, and allows any layout (there is no fixed joint, as the joint is along the groove made in the frame for this purpose).

The Cofenol Range extendable clamp is used when there is another component between the screens

to be joined together (connecting profile, wood, etc.). Its opening and closing system uses a spindle, and can accommodate measurements between 50 mm. and 230 mm. approx.

The Cofenol Range short extendable corner clamp is designed to join internal corners, and there-

fore has only one arm.

The Heavy Range clamps are different from those of the Cofenol Range, so although they can also be used with the Cofenol Range if attached outside the profile (providing less alignment), it is advisable to use the correct clamp in each Range.

Screen Cofenol1000 x 3.000 mm.

Cofenol Range fixed clamp.

Detail.

1515

TENSIONERS FOR BOTH SIDESOF WALL

For walls with formwork on both sides, a 15.5 mm. diameter Dywidag bar must be placed across the wall, with a 95 mm. pad nut.

SOLUTIONS FOR CORNERS

With internal angles either fixed at 90° or hin-ged (between 70° and 150°), and fixed or hinged external angles, we can provide solutions for al-most any corner that may be required on site.

SPACERS

For spacing in a wall of a required length, a connecting profile can be placed between the screens if the space is a multiple of 50 mm. This must be attached using an extendable clamp or a Dywidag bar and hexagonal nut.

For spaces between 100 and 400 mm., a spacer sheet is used (variable measurement: can be ad-justed millimetre by millimetre). Stiffeners must be attached for correct use.

WALL BRACED ON ONE SIDE

To make one-sided walls both safely and quickly, there are braces measuring 3, 4 and 6 metres high. These braces (which are the same as the Light and Cofenol Series) must be used with the screens in horizontal position, fitting four bra-ces for every three linear metres of formwork, so they form one single body that can be moved as a block to the concrete work. If the screens have to be fitted vertically, due to site needs, Cofresa stiffeners will have to be placed hori-zontally between the screens and the braces, respecting the proportion of 4 braces for every 3 linear metres of formwork.

The braces have been calculated and designedto guarantee the same resistance limits as the rest of the heavy series (70 KNw/m2 with 3 mm. maximum warping). However, and as the design has only been calculated for assembly with Cofresa formwork, the braces must be exclusively used in Cofresa formwork systems as correct functioning is not guaranteed with other makes of screens. The 6-metre brace is comprised of two 3-metre high bodies, which can be mounted independently to form 3-metre walls (see photo).

Cofe

nol R

ange

Assembly offormwork for both sides

of wall using the Cofenol Range.

1616

SAFETY AT HEIGHTS

Using the work bracket and the parapet, we can construct a 700 mm. walkway at the edge of the formwork. This provides access to work areas, and the safety necessary to work at heights.

HOISTING TOOL

Hoisting tools are the accessories needed to handle the formwork safely using cranes. Sheets of formwork measuring more than 12 square metres should not be lifted. The thread must be inserted into the hole for safety.

Right to left:Heavy Range screen, CofenolRange screen, aluminium screen. The clampswhich make this combination possible are from theCofenol Range.

Cofe

nol R

ange

1717

COFENOL SCREENS REF. NO.ITEM

REF. NO.ITEM

COFENOL CLAMPSWEIGHTKg.

WEIGHTKg. Co

feno

l Ran

ge

Phenol Thickness 15 mm.

Frame/Profiles 100 x 50 (grooved), 88 x 40 mm. x mm.

Allowable Pressure 50 kNw/m2


No. of Tie Rods (width 1.000 mm.) 4 tie rods = 1.3 tie rods/m2


Weight of Screen + Access. (approx.) 43.3 kg/m2

Standard Measurements 1.000 x 3.000, 600 x 3.000, 500 x 3.000,

400 x 3.000, 300 x 3.000 mm. x mm.

CAUTION: THE ACCESSORIES IN THE COFENOL RANGE ARE THE SAME AS THOSE OF THE HEAVY RANGE, EXCEPT FOR THE CLAMPS, WHICH DIFFER. SEE BREAKDOWN OF HEAVY RANGE ON PAGES 12 AND 13.

COFENOL TECHNICAL DATA

BREAKDOWN COFENOL

1.000 x 3.000 mm (3 m2) 3006000 109 600 x 3.000 mm (1,8 m2) 3006002 77 500 x 3.000 mm (1,5 m2) 3006004 66 400 x 3.000 mm (1,2 m2) 3006006 60 300 x 3.000 mm (0,9 m2) 3006008 52

1.000 x 1.500 mm (1,5 m2) 3006001 56 600 x 1.500 mm (0,9 m2) 3006003 34 500 x 1.500 mm (0,75 m2) 3006005 29 400 x 1.500 mm (0,6 m2) 3006007 23 300 x 1.500 mm (0,45 m2) 3006009 18

Cofenol Range fixed clamp 3001232 6

Cofenol Range extendable clamp 3000523 6,5

Cofenol Range extendable corner clamp 3000931 5


1818

foRja-2Fo

rja-2

A metal system for girders and flat floor structures. Only two types of part + board. Very safe, simple and fast, as no bolts or pins are required. For 27 mm. thick board (970 x 500 x 27 mm. or 100 x 500 x 27 mm.).

SYSTEM COMPONENTS: SHORING PROFILE

This profile has a dual function: it both shores the structure and supports the boards. The jo-ints between the profiles are tongue and gro-ove, guaranteeing complete safety with no need for bolts or pins.


Profile lenght: 3.000/1.500/1.500 mm. extendable shoring profile.Profile width: 110 mm.

Shoring profile.

1919

Forja-2

SYSTEM COMPONENTS: DISTRIBUTION PROFILE

The distribution profile is the part which de-termines the path width of the shoring profile. The profile has U components welded to it, in the quantity necessary to work with 970 mm. or 1.000 mm. wide board.

The joints between the profiles are tongue and groove, guaranteeing high safety. The tongue and groove joint is made by inserting the ton-gue into the groove, which means that the pro-files must be positioned with the groove facing inwards. There are distribution profiles with U components at both ends, called “starter” profi-les, which can be used in situations where com-ponents may not project past the outline of the storey.

Extendable shoring profile.

ITEM NO. OF “U”

Distribution profile 4 m. starter 5 Distribution profile 4 m. 4 Distribution profile 2 m. starter 3 Distribution profile 2 m. 2 Distribution profile 500 mm. 1

2020

Board-bearing shoring profiles:One row is recovered and the next is left. All distribution profiles and boards are recovered.

DISTRIBUTION OF PROFILES & ASSEMBLY FOR FLAT FLOOR STRUCTURE

The profiles of the system form a grid, as the shoring profile is always placed perpendicular to the distribu-tion profile.

The board-bearing shoring profiles are placed on top of the distribution profiles, forming paths approximately 1 metre wide. The distribution profiles are placed under-neath the shoring profiles and perpendicular to them, approximately every 3 metres. When the formwork is removed, all distribution profiles and boards are reco-

vered. Of the board-bearing shoring profiles, one row is recovered and the next is left, which means that approximately half of them are recovered (unless it is felt that more need to be left in place, due to cons-truction needs). The most convenient and safest way to assemble the system is always to begin by securing a distribution profile to a pillar of the perimeter. This ensures that the whole system has a stable, secure anchoring point. Next, place another distribution profile parallel to the first, approximately 2.9 m. away from it, and place the board-bearing shoring profiles on them as shown in the picture. The rest of the storey must be assembled by positioning first the board-bearing shoring profiles, and then the distribution profiles un-derneath.

BOARD-BEARING SHORING PROFILE

DISTRIBUTION PROFILE

Forja-2

2121

Storey shored.

Forja-2

CONCRETE POURING & REMOVAL OF FORMWORK

7 days after it is poured, the concrete has already rea-ched 65% of the resistance it will have 28 days after being poured (which is the maximum according to ISO regula-tions). Practice has shown that in general, for normal (ne-ver extreme) temperature and humidity levels, formwork can be removed after 72 hours, leaving the storey shored (all boards and distribution profiles, and half the shoring profiles, can be recovered). As the structure is not yet loaded when the storey is left shored (it is supporting only its own weight), while the various components (all boards and distribution profiles, and half the shoring profiles) are being removed and transferred to the upper part, and as-sembly of formwork for the next storey is begun (this is when the storey is considered loaded), at least 4 or 5 days will have passed (7 since the concrete was poured), and 65% of the resistance needed to concrete the upper sto-rey will have been achieved.

RESTRUTTING

One of the advantages of this system is that it needs no “restrutting”. There are many systems on the market with which struts need to be removed from certain parts when the storey is left shored, so that they can be placed at other parts which have not yet been strutted. The problem arises due to the risk of internal fissures in the floor structure, and the consequent danger of the storey collapsing. To avoid this problem, the only solution with these other systems is to strut all the lugs. This requi-res a large number of struts, and more impor-tantly tends to leave the storey impassable due to the maze of struts. With the Cofresa Floor Structures system, after all the struts have been put in place the storey is neat and pas-sable, with paths approximately 1 metre wide (see photo). Also, when the storey is left shored there is no need to restrut any other parts, and the storey is ultimately left with paths approxi-mately 2 metres wide.

2222

Forja-2

PERIMETER BOUNDARY

The perimeter boundary is a good solution for closing off the perimeter of the storey conveniently and quic-kly. The Cofresa model is manufactured with square panels which provide greater rigidity. In addition, these are easy to join together, as they have tongues and grooves.

In order for any perimeter boundary to function correctly, it must be correctly anchored to the board using bolts. Do not use any components other than bolts for this, as they will not pro-vide sufficient anchorage.

Standard heights: 300 mm., 350 mm.Standard lengths: 2.000 mm., 1.000 mm. There is an “extendable” boundary which provides formwork for between 10 and 950 mm.

Extendable boundary.

2323

A

A

Forja-2Profiles 60 x 40, 22 mm. round

Thickness of Housing 4 mm.

Allowable Pressure 10 kN/m2.


Weight 3.5 kg/m.

Standard Measurements 4.000, 2.000, 1.000 mm.

Profiles Shaped profile, 22 mm. round



Weight 6 kg/m.

Standard Measurements 3.000, 2.000, 1.500 (extendable) mm.

TECHNICAL DATA OF DISTRIBUTION PROFILE

TECHNICAL DATA OF SHORING PROFILE

GALVANISED BOARD-BEARINGSHORING PROFILE

GALVANISED DISTRIBUTION PROFILE 970 mm.

REF. NO.ITEM

REF. NO.ITEM

BREAKDOWN FORJA-2

Starter 2.146 mm. with three “U” 3001151 7,5 4.172 mm. with five “U” 3001154 14

Standard 2.026 mm. with two “U” 3001153 7 4.052 mm. with four “U” 3001162 13,8


Perimeter boundary 300 x 2.000 (3) 3001007 16 300 x 1.000 (2) 3001011 10 350 x 2.000 (3) 3001008 19 350 x 1.000 (2) 3001003 12

Extendable 300 x 1.000 (1) 3001001 8

Boundary cornerpiece 300 x 550 x 550 3001049 8 350 x 550 x 550 3001055 9

3.000 mm. 3001165 18 1.500 mm. 3001164 9,5

Extendable shoring 100 to 1.450 mm. 3001136 6,5

PERIMETER BOUNDARY REF. NO.ITEM

WEIGHTKg.

WEIGHTKg.

WEIGHTKg.

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50430 María de Huerva (Zaragoza - España)

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FORMWORK SYSTEMS - Cofresa

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