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The Formwork Experts 03/2011 en-GB 999776002 User information Method statement Dokaflex 1-2-4 9720-337-01

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Page 1: 999776002_2011_03_online

The Formwork Experts

03/2011

en-GB999776002

User informationMethod statement

Dokaflex 1-2-4

9720-337-01

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2 999776002 - 03/2011

Introduction User information Dokaflex 1-2-4

The Formwork Experts

Introduc-tion

© by Doka Industrie GmbH, A-3300 Amstetten

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User information Dokaflex 1-2-4 Introduction

3999776002 - 03/2011

The Formwork Experts

Contents4 Introduction4 Elementary safety warnings6 Eurocodes at Doka8 Doka services

10 Product description12 System logic for all floor-slabs up to 30 cm

thick13 Instructions for assembly and use18 Adaptability19 System components of Dokaflex 1-2-4 – also

for slab thicknesses of over 30 cm20 Floor formwork around edges21 Fall-arrest systems on the structure22 Beam forming support23 Drop-beam not integrated into the floor-slab /

stop-end formwork24 Drop-beam integrated into the floor-slab26 Slab stop-ends27 Secondary-beam stabilisers28 Combining Doka table systems29 Formwork planning with Tipos-Doka30 Transporting, stacking and storing36 Reshoring props, concrete technology and

striking

38 Component overview

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Introduction User information Dokaflex 1-2-4

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IntroductionElementary safety warnings

User target groups● This User Information booklet (Method Statement) is

aimed at everyone who will be working with the Doka product or system it describes. It contains informa-tion on the standard design for setting up this sys-tem, and on correct, compliant utilisation of the sys-tem.

● All persons working with the product described herein must be familiar with the contents of this man-ual and with all the safety instructions it contains.

● Persons who are incapable of reading and under-standing this booklet, or who can do so only with dif-ficulty, must be instructed and trained by the cus-tomer.

● The customer is to ensure that the information mate-rials provided by Doka (e.g. User Information book-lets, Instructions for Assembly and Use, Operating Instruction manuals, plans etc.) are available to all users, and that they have been made aware of them and have easy access to them at the usage location.

● In the relevant technical documentation and form-work utilisation plans, Doka shows the workplace safety precautions that are necessary in order to use the Doka products safely in the usage situations shown. In all cases, users are obliged to ensure compliance with national OH&S (occupational health and safety) rules throughout the entire project and to take appro-priate additional or alternative workplace safety pre-cautions where necessary.

Hazard assessment● The customer is responsible for drawing up, docu-

menting, implementing and continually updating a hazard assessment at every job-site. This document serves as the basis for the site-spe-cific hazard assessment, and for the instructions given to users on how to prepare and utilise the sys-tem. It does not substitute for these, however.

Remarks on this document● This User Information booklet can also be used as a

generic method statement or incorporated with a site-specific method statement.

● Many of the illustrations in this booklet show the situation during formwork assembly and are therefore not always complete from the safety point of view.Any safety accessories not shown in these illustra-tions must still be used by the customer, in accord-ance with the applicable rules and regulations.

● Further safety instructions, especially warnings, will be found in the individual sections of this document!

Planning● Provide safe workplaces for those using the form-

work (e.g. for when it is being erected/dismantled, modified or repositioned etc). It must be possible to get to and from these workplaces via safe access routes!

● If you are considering any deviation from the details and instructions given in this booklet, or any application which goes beyond those described in the booklet, then revised static cal-culations must be produced for checking, as well as supplementary assembly instructions.

Rules applying during all phases of the assignment:● The customer must ensure that this product is

erected and dismantled, reset and generally used for its intended purpose under the direction and super-vision of suitably skilled persons with the authority to issue instructions. These persons' mental and physical capacity must not in any way be impaired by alcohol, medicines or drugs.

● Doka products are technical working appliances which are intended for industrial/commercial use only, always in accordance with the respective Doka User Information booklets or other technical docu-mentation authored by Doka.

● The stability of all components and units must be ensured during all phases of the construction work!

● The functional/technical instructions, safety warn-ings and loading data must all be strictly observed and complied with. Failure to do so can cause acci-dents and severe (even life-threatening) damage to health, as well as very great material damage.

● Fire-sources are not permitted anywhere near the formwork. Heating appliances are only allowed if properly and expertly used, and set up a safe dis-tance away from the formwork.

● The work must take account of the weather condi-tions (e.g. risk of slippage). In extreme weather, steps must be taken in good time to safeguard the equipment, and the immediate vicinity of the equip-ment, and to protect employees.

● All connections must be checked regularly to ensure that they still fit properly and are functioning cor-rectly. It is very important to check all screw-type connec-tions and wedge-clamped joins whenever the con-struction operations require (particularly after excep-tional events such as storms), and to tighten them if necessary.

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Assembly● The equipment/system must be inspected by the

customer before use, to ensure that it is in suitable condition. Steps must be taken to rule out the use of any components that are damaged, deformed, or weakened due to wear, corrosion or rot.

● Combining our formwork systems with those of other manufacturers could be dangerous, risking damage to both health and property. If you intend to combine different systems, please contact Doka for advice first.

● The assembly work must be carried out by suitably qualified employees of the client's.

● It is not permitted to modify Doka products; any such modifications constitute a safety risk.

Erecting the formwork● Doka products and systems must be set up in such

a way that all loads acting upon them are safely transferred!

Pouring● Do not exceed the permitted fresh-concrete pres-

sures. Excessively high pouring rates lead to form-work overload, cause greater deflection and risk causing breakage.

Striking the formwork● Do not strike the formwork until the concrete has

reached sufficient strength and the person in charge has given the order for the formwork to be struck!

● When striking the formwork, never use the crane to break concrete cohesion. Use suitable tools such as timber wedges, special pry-bars or system features such as Framax stripping corners.

● When striking the formwork, do not endanger the stability of any part of the structure, or of any scaf-folding, platforms or formwork that is still in place!

Transporting, stacking and storing● Observe all regulations applying to the handling of

formwork and scaffolding. In addition, the Doka slinging means must be used - this is a mandatory requirement.

● Remove any loose parts or fix them in place so that they cannot be dislodged or fall free!

● All components must be stored safely, following all the special Doka instructions given in the relevant sections of this User Information booklet!

Regulations; industrial safety● Always observe all industrial safety regulations and

other safety rules applying to the application and uti-lisation of our products in the country and/or region in which you are operating.

Instruction as required by EN 13374:● If a person or object falls against, or into, the edge

protection system and/or any of its accessories, the edge protection component affected may only con-tinue in use after it has been inspected and passed by an expert.

Maintenance● Only original Doka components may be used as

spare parts. Repairs may only be carried out by the manufacturer or authorised facilities.

Symbols usedThe following symbols are used in this booklet:

MiscellaneousWe reserve the right to make alterations in the interests of technical progress.

Important noteFailure to observe this may lead to malfunc-tion or damage.

CAUTION / WARNING / DANGERFailure to observe this may lead to material damage, and to injury to health which may range up to the severe or even life-threaten-ing.

InstructionThis symbol indicates that actions need to be taken by the user.

Sight-checkIndicates that you need to do a sight-check to make sure that necessary actions have been carried out.

TipPoints out useful practical tips.

ReferenceRefers to other documents and materials.

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Introduction User information Dokaflex 1-2-4

The Formwork Experts

Eurocodes at DokaIn Europe, a uniform series of Standards known as Eurocodes (EC) was developed for the construction field by the end of 2007. These are intended to provide a uniform basis, valid throughout Europe, for product specifications, tenders and mathematical verification.The EC are the world's most highly developed Stand-ards in the construction field.In the Doka Group, the EC are to be used as standard from the end of 2008. They will thus supersede the DIN norms as the "Doka standard" for product design.

The widely used "Permissible stress design" (compar-ing the actual stresses with the permissible stresses) has been superseded by a new safety concept in the EC.The EC contrast the actions (loads) with the resistance (capacity). The previous safety factor in the permissible stresses is now divided into several partial factors. The safety level remains the same!

Comparison of the safety concepts (example)

Ed Design value of effect of actions (E ... effect; d ... design) Internal forces from action Fd (VEd, NEd, MEd)

Rd Design value of the resistance (R ... resistance; d ... design) Design capacity of cross-section (VRd, NRd, MRd)

Fd Design value of an actionSteel: Rd =

Rk Timber: Rd = kmod ·Rk

Fd = γF · Fk γM γM

(F ... force)Fk Characteristic value of an action

"actual load", service load (k ... characteristic) e.g. dead weight, live load, concrete pressure, wind

Rk Characteristic value of the resistance e.g. moment resistance to yield stress

γF Partial factor for actions (in terms of load; F ... force) e.g. for dead weight, live load, concrete pres-sure, wind Values from EN 12812

γM Partial factor for a material property (in terms of material; M...material) e.g. for steel or timber Values from EN 12812

kmod Modification factor (only for timber – to take account of the moisture and the duration of load action) e.g. for Doka beam H20 Values as given in EN 1995-1-1 and EN 13377

Ed

Rd

Permissible stress design EC/DIN concept

Factual≤ Fpermissible Ed≤ Rd

A Utilisation factor

60 [kN]

60<70 [kN]

115.5 [kN]

� ~ 1.65

Fyield

Fpermissible

Factual

9801

3-10

0

A

90 [kN]

115.5 [kN]

90<105 [kN]

Rk

Rd

Ed

�M

= 1.1

�F

= 1.5

9801

3-10

2

A

The "permissible values" communicated in Doka documents (e.g.: Qpermissible = 70 kN) do not correspond to the design values (e.g.: VRd = 105 kN)!➤ Avoid any confusion between the two!➤ Our documents will continue to state the per-

missible values. Allowance has been made for the following par-tial factors: γF = 1.5 γM, timber = 1.3 γM, steel = 1.1 kmod = 0.9In this way, all the design values needed in an EC design calculation can be ascertained from the permissible values.

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The Formwork Experts

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Introduction User information Dokaflex 1-2-4

The Formwork Experts

Doka services

Support in every phase of the projectDoka offers a broad spectrum of services, all with a sin-gle aim: to help you succeed on the site.Every project is unique. Nevertheless, there is one thing that all construction projects have in common – and that is a basic structure with five phases. We at Doka know our clients' varying requirements. With our consulting, planning and other services, we help you achieve effective implementation of your formwork assignment using our formwork products – in every one of these phases.

Project development phase Tendering phase Operations scheduling phase

Taking well-founded decisions thanks to professional advice and consulting

Optimising the preliminary work with Doka as an experienced part-ner

Controlled, regular forming oper-ations, for greater efficiency resulting from realistically calculated formwork concepts

Find precisely the right formwork solutions, with the aid of● help with the bid invitation● in-depth analysis of the initial sit-

uation● objective evaluation of the plan-

ning, execution, and time-risks

Draw up potentially winning bids, by● basing them on realistically calcu-

lated guideline prices● making the right formwork

choices● having an optimum time-calcula-

tion basis

Plan cost-effectively right from the outset, thanks to● detailed offers● determination of the commission-

ing quantities● co-ordination of lead-times and

handover deadlines

1 2 3

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The advantages for you thanks to professional advice and consulting

● Cost savings and time gains When we advise and support you right from the word "go", we can make sure that the right formwork systems are chosen and then used as planned. This lets you achieve optimum utilisation of the formwork equipment, and effec-tive forming operations because your workflows will be correct.

● Maximised workplace safety The advice and support we can give you in how to use the equip-ment correctly, and as planned, leads to greater safety on the job.

● Transparency Because our services and costs are completely transparent, there is no need for improvisation dur-ing the project – and no unpleas-ant surprises at the end of it.

● Reduced close-out costs Our professional advice on the selection, quality and correct use of the equipment helps you avoid damage, and minimise wear-and-tear.

(Shell) construction phase (Shell) completion phase

Optimum resource utilisation with assistance from the Doka Formwork Experts

Seeing things through to a posi-tive conclusion with professional support

Workflow optimisation, thanks to● thorough utilisation planning● internationally experienced

project technicians● appropriate transport logistics● on-site support

Doka Services are a byword for transparency and efficiency here, offering● jointly handled return of rented

formwork● professional dismantling● efficient cleaning and recondition-

ing using special equipment

4 5

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User information Dokaflex 1-2-4

The Formwork Experts

Product description

Dokaflex 1-2-4 - the versatile hand-set system for floor-slabsDokaflex 1-2-4 can easily be adapted to fit any layout, simply by telescoping the Doka H20 top beams. The materials planning work is done by slide-rule, which appreciably reduces the costs of planning and opera-tions scheduling.● no structural-design work is needed, as 1-2-4 shows

you the maximum spacings for all slabs up to 30 cm thick

● you can tell at a glance whether the formwork has been set up correctly

Further advantages:● infill zones are managed within the system, making it

easy to accommodate walls and columns● for shoring heights of up to 5.50 m● any type of form-facing can be used● no need to measure upDokaflex 1-2-4 is ideal for enclosed spaces where the formwork superstructure can rest up against walls on all sides.Horizontal forces at exposed slab-edges, drop beams or steps in ceiling slabs must be restrained by strutting or back-stays.

Small number of system compo-nents - all perfectly co-ordinated

9720-202-01

A

B

C D

E

F

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(A) ProFrame panel1)

● special surface coating for superb-quality concrete faces

● can be used on both sides● all-round edge protection for long lifespan● improved workplace safety thanks to reduced risk of

slippage● easy to clean, with high-pressure spray cleaner● space-saving storage and handling1) Alternatively, it is also possible to use Doka formwork sheets 3-SO.

(B) Doka beams H20 top 3.90m and 2.65m● easy-to-distinguish primary (3.90 m) and secondary

(2.65 m) beams● integrated shock absorber on the beam end piece for

reduced damage and long service life● pre-defined positioning points as reference marks for

setting-up and checking the formwork

(C) Lowering head H20 ● integrated quick-lowering function for minimising

damage when striking● stabilises the primary beams so that these cannot tip

over on their sides

(D) Supporting head H20 DF ● easy to mount to the floor prop● for fixing intermediate props to the primary beam

(E) Doka floor props Eurex 20 top● DIB (German Institute of Construction Engineering)

approval n° Z-8.311-905● EN 1065-compliant prop

- all extension lengths: Class D- up to 3.50 m: In addition, Class B- up to 4.00 m: In addition, Class C

(see the approval or type-test for in-depth informa-tion)

● high load-bearing capacity- permitted capacity of Eurex 20 top: 20 kN

● numbered pegging holes, for easier height adjust-ment

● special thread geometry, which makes the prop eas-ier to release even when it is under high load

● elbowed fastening clamps, reducing the risk of injury and making the props easier to operate

Note:The floor props can be lengthened with the Floor prop extension 0.50m (allow for the reduced load-bearing capacity).

(F) Removable folding tripod ● for holding floor props upright● swing-out legs allow flexible placement in con-

stricted situations such as along edges and in cor-ners

Follow the directions in the “Doka formwork sheets” User Information!

Follow the directions in the “Doka formwork beams” User Information!

9720

-239

-01

9720

-238

-01

Follow the directions in the "Eurex top floor props" User Information booklet!

Follow the directions in the "Floor prop exten-sion 0.50m" User Information!

☞ The Doka floor prop Eurex 20 top 700 is only allowed to be used with a limited extension length.

Follow the directions in the "Doka floor prop Eurex 20 top 700" User Information!

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The Formwork Experts

System logic for all floor-slabs up to 30 cm thickThe straightforward logic underlying the Dokaflex 1-2-4 system means that there is no need for planning and operations scheduling work. The quantities are simply computed using the materials slide-rule

Spacing and positions of the compo-nent partsNo matter whether the beams are resting on, between or next to the marks, the maximum spacing is always plain to see.You can tell at a glance whether the formwork has been erected correctly, and without having to measure up.

x ... 0.5 m

Primary and secondary beamsThe 3.90m long Doka beam H20 top is used as a pri-mary beam, and the 2.65m long H20 top beam as a secondary beam.

Format of the formwork sheetsThe ProFrame panels, in formats of 200x50cm and 250x50cm (21 or 27mm), have just the right dimen-sions to fit exactly into the increment-grid of the Dokaflex system.

A Mark

1 mark = 0.5 m● max. spacing of secondary beams● max. cantilever of edge-beam● min. cantilever in primary-beam overlap zone

2 marks = 1.0 m● max. spacing of props

4 marks = 2.0 m● max. spacing of primary beams

x

9768-202-01

A

A Floor prop Eurex + Lowering head H20 + Removable folding tri-pod

B Floor prop Eurex + Supporting head H20 DFC Doka beam H20 top 2.65 m (secondary beam)D Doka beam H20 top 3.90 m primary beam)

The primary beams should be orientated at right angles to the direction of an uneven length/width of room (5 m, 7 m, 9 m, etc.). This makes more efficient use of the potential of the system.

1

2 2

4

4

1

1

11

9720-242-01

A

C

B

D

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Instructions for assembly and use

Erecting the formworkPutting up the floor props➤ Place primary and secondary beams along the

edges.The marks on the beams show you the maximum spacings: - every 4 marks for primary beams - every 6 marks for props with removable folding tri-pods

➤ Roughly adjust the height of the floor prop, using the fastening clamp.

The pegging holes are all numbered, which makes it easier to adjust the props to the same height.

➤ Insert a Lowering head H20 into the floor prop. Leave the correct amount of lowering play (a)!

➤ Put up each removable folding tripod.

➤ Put the floor prop into the tripod and fix it in place with the clamping lever. Before stepping onto the formwork, check again to make sure that the props have been correctly fixed in the tripods.

Setting up tripods in corners or up against walls

If it is not possible to completely unfold the legs of the tripod – e.g. at the edges of a structure or at floor breakthroughs etc. – we recommend fastening this tripod to an adjacent floor prop instead, where there is room for the legs to be completely unfolded.

☞ Important note:As well as the instructions given here, the sec-tion headed "Reshoring props, concrete tech-nology and striking" MUST be followed.

CAUTION➤ If the floor props are transported with the

lowering heads still attached, you must secure these with a Spring-locked connect-ing pin 16 mm to prevent them dropping out. This is particularly important when they are transported in the horizontal.

Clearance a between wedge and head-plate: 6 cm

9720-006

a

9720-006

☞ ➤ Do not oil or grease wedge-clamped joins.

The lowering heads that will be under the pri-mary beams next to the walls must be turned inwards so that they can be knocked undone when the time comes to take down the form-work.

9720-240-019720-241-01

9720-204-01

9720-335-01

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The Formwork Experts

Inserting the primary beams➤ Using beam-forks, place the primary beams into the

lowering heads.

The lowering heads can hold both single beams (on edge-of-room props) and double beams (at over-laps).

➤ Adjust the primary beams to the correct floor-slab height.

WARNING➤ It is not permitted to set down any loads on

the floor-slab formwork (e.g. beams, form-work sheets, reinforcement steel) until after the intermediate props have been set up!

9720

-003

9720

-004

9720-205-01

Planks can be attached to the floor props as diagonal braces, using the Bracing clamp B. (This is only to help stand the props upright and is not suitable for restraining horizontal loads).

9776-201-01

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Placing the secondary beams on the primary beams➤ Use the beam forks to place the secondary beams

on the primary beams, with an overlap.

Maximum spacing of secondary beams: 1 mark

Putting up the intermediate props➤ Place the Supporting head H20 DF on the inside

tube of the floor prop and secure it with the integral spring-steel stirrup.

➤ Put up the intermediate props.

Maximum prop spacing: 2 marks apart

Be sure to place a beam (or double beam) wherever there is to be a joint between the Dokadur panels.

To prevent the secondary beams tipping on their sides while the panels are being laid on them, Secondary-beam stabilisers can be used.

9720

-005

9720

-243

-01

9776-204-01

98039-216-01

A Supporting head H20 DFB Doka beam H20 top

9767

-233

-01

321

9768-215-01

AB

9720-207-01

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The Formwork Experts

Mounting slab stop-ends and fall-arrest railings

➤ Mount the slab stop-ends➤ Mount guard rails around all exposed edges.

Laying the ProFrame panels➤ Lay the ProFrame panels at right angles to the sec-

ondary beams.

➤ Spray the ProFrame panels with parting agent.

PouringTo protect the surface of the form-facing, we recom-mend using a vibrator with a protective rubber cap.

Striking

Removing the intermediate props➤ Remove the intermediate props and put them in the

stacking pallet.

After the intermediate props have been removed, there remain only props spaced 2.0 m apart in the direction of the secondary beams and 3.0 m apart in the direc-tion of the primary beams. This leaves enough space to manoeuvre wheel-around scaffolds and stacking pal-lets without difficulty.

☞ ➤ Use personal fall arrest systems (PFAS) to protect against fall hazards when working on unsecured slab-edges.

Follow the directions in the "Doka floor end-shutter clamp" User Information booklet!

Where necessary (e.g. edge zones), secure the form-ply with nails.Recommended nail lengths● sheet thickness 21 mm - approx. 50 mm● sheet thickness 27 mm - approx. 60 mm

☞ Windproofing● For increased stability, in larger rooms, the

full erection sequence of "primary beams + secondary beams + formwork sheets" should be carried out progressively for suc-cessive sub-areas of the room. When doing this, provide suitable bracing to walls or columns.

● If there is any risk of the formwork being blown over, all free-standing, non-enclosed areas of slab formwork must be secured dur-ing work-breaks and when work finishes for the day.

9720-330-01

☞ Observe all stipulated stripping times!

The Wheel-around scaffold DF is ideal for striking the formwork from floor-slabs above rooms of medium height.

● collapsible wheelaround platform made of light alloy

● variable working heights of up to 3.80 m (max. platform height: 1.75 m)

● platform width: 0.80 mFor greater heights than this, the Doka mobile scaffold tower Z is ideal.

9720-006

9768-219-01

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Lowering the floor-slab formwork➤ Lower the floor-slab formwork by striking the wedge

on the lowering head with a hammer.

Removing parts that are no longer needed➤ Turn the secondary beams over onto their sides, pull

them out and put them in the stacking pallet. Leave the beams under the panel-joints in place.

➤ Take out the ProFrame panels and put them in the stacking pallet.

➤ Remove the remaining secondary beams and the primary beams, and put them in the stacking pallet.

Removing the floor props1) Hold the inner tube with one hand.2) Open the fastening clamp to unfix the inner tube.

Guide this by hand while lowering it into the outer tube.

➤ Put the removable folding tripods and props in the stacking pallet.

Repropping➤ Before pouring the next floor-slab (i.e. above the one

that has just been stripped), put up reshoring props.

9720-007

9720

-008

9720-009

When lifting the equipment to the next storey, it is better to transport the floor props and the low-ering heads separately (the floor props on their own can be stored much more space-savingly in the stacking pallet).

☞ For further information (number of props etc.), see "Reshoring props, concrete technology and striking"

9720-006

1

2

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The Formwork Experts

Adaptability

Closures and adjustmentsInfill zones are solved within the system - with no spe-cial accessories needed. The necessary adaptation is made by overlapping the Doka beams and inserting strips of formwork sheeting.

Grid and flexibility - in one systemDokaflex also adapts to difficult layouts.

Adaptation along edge Adaptation around columns

A ProFrame panelB Fitting boards in the closure zone

☞ The grain of the face layer (A) must run at right angles to the supports (B) .

9720

-336

-01

9768

-209

-01

A

B

9776

-200

-01

A

B

9792

-210

-01 B

A

9720-211-01

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System components of Dokaflex 1-2-4 – also for slab thicknesses of over 30 cm

Only one system in use on the siteUp to a slab thickness of 30 cm, no structural design work is needed. However, it is also possible to compute the exact quantities – of the same system components – that will be needed for any given thickness of slab, with reference to the table. In this way, only as much formwork equipment is used as is really needed, as dictated by the slab load.The following tables allow for a service load of 0.75 kN/m2 and additional loading totalling 10% of the dead load of the concrete, but min. 0.75 kN/m2 and max. 1.75 kN/m2. Mid-span deflection has been limited to l/500.

On the site, the easy-to-use slide-rule is ideal for deter-mining the permissible spacing of primary beams and props.

Timber formwork beams H20

1) The slab loads given here are based on massive concrete floor-slabs. In the case of cavity flat-slab floors, significantly lower slab loads occur.

Spacing of secondary beams

Slab thickness[cm]

Slab load 1)

[kN/m2]

Max. permitted spacing of primary beams [m]

for a secondary-beam spacing [m] of

Max. permitted spacing of props [m]for the selected primary-beam spacing [m] of

0.500 0.625 0.667 0.750 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.5010 4.30 3.67 3.41 3.33 3.20 2.91 2.70 2.49 2.31 2.16 2.03 1.86 1.69 1.55 1.3312 4.80 3.47 3.22 3.15 3.03 2.76 2.56 2.36 2.18 2.04 1.85 1.67 1.52 1.39 —14 5.30 3.31 3.08 3.01 2.89 2.63 2.44 2.24 2.08 1.89 1.68 1.51 1.37 1.26 —16 5.80 3.18 2.95 2.89 2.78 2.52 2.34 2.14 1.97 1.72 1.53 1.38 1.25 1.15 —18 6.30 3.07 2.85 2.78 2.68 2.43 2.25 2.06 1.81 1.59 1.41 1.27 1.15 — —20 6.80 2.97 2.75 2.69 2.59 2.35 2.17 1.96 1.68 1.47 1.31 1.18 1.07 — —22 7.30 2.88 2.67 2.61 2.51 2.28 2.09 1.83 1.57 1.37 1.22 1.10 1.00 — —24 7.80 2.80 2.60 2.54 2.45 2.22 2.03 1.71 1.47 1.28 1.14 1.03 0.93 — —26 8.30 2.73 2.53 2.48 2.38 2.17 1.93 1.61 1.38 1.20 1.07 0.96 — — —28 8.80 2.67 2.47 2.42 2.33 2.12 1.82 1.52 1.30 1.14 1.01 0.91 — — —30 9.30 2.61 2.42 2.37 2.28 2.07 1.72 1.43 1.23 1.08 0.96 0.86 — — —35 10.68 2.48 2.30 2.25 2.17 1.87 1.50 1.25 1.07 0.94 0.83 — — — —40 12.05 2.38 2.21 2.16 2.08 1.66 1.33 1.11 0.95 0.83 0.74 — — — —45 13.43 2.29 2.12 2.08 1.99 1.49 1.19 0.99 0.85 0.74 0.66 — — — —50 14.80 2.21 2.05 2.01 1.90 1.35 1.08 0.90 0.77 0.68 — — — — —

Slab thickness [cm]Max. spacing of secondary beams [m] when using the following

sheeting:3-SO 21mm 3-SO 27mm Dokaplex 18mm Dokaplex 21mm

Up to 18 0.75 0.75 0.50 0.667Up to 25 0.667 0.75 0.50 0.667Up to 30 0.625 0.75 0.50 0.625Up to 40 0.50 0.75 - 0.50Up to 50 0.50 0.667 - 0.50

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User information Dokaflex 1-2-4

The Formwork Experts

Floor formwork around edgesIt can be advantageous to combine Dokaflex with Dokamatic tables, particularly in edge-zones.This is an easy, safe way of forming drop-beams and slab stop-ends, and of erecting safety railings.

Without edge drop-beam

Using Dokaflex on edge zonesIf no separate edge tables are available, the following points must be remembered when using Dokaflex:● In order to be able to transfer the horizontal forces,

the superstructure components must be firmly attached to one another.

● The back-stay can be fastened to either the second-ary or primary beam.

With edge drop-beam

Staxo, Aluxo, d2 and the Beam forming support 20 can be readily combined with Dokaflex 1-2-4 where a drop beam needs to be formed.

For more information, see the "Dokamatic table", "Dokaflex table", "Doka load-bearing tower Staxo 40" or "Doka load-bearing tower Staxo 100" User Information booklets.

A Dokamatic tableB DokaflexC Dokamatic table platformD Lashing strap 5.00mE Doka Express anchor 16x125mm

WARNING➤ For work at dangerous heights, the second-

ary-beam elements with the working plat-forms must be preassembled on the ground.

➤ Where working platforms are erected on cantilevering floor-slab formwork, the form-work must be secured against accidental lift-out.

➤ Secondary beams with stop-end formwork must be secured against horizontal pull-out.

➤ In addition, erect guard scaffolding beside the structure.

9720-338-01

A

C

D

B

E

A Dokamatic tableB DokaflexC Handrail post T 1.80m ( with Toeboard holder T 1.80m), Handrail

clamp S or Handrail post 1.50mD Lashing strap 5.00mE Doka Express anchor 16x125mm

A Load-bearing towerB DokaflexC Beam forming support 20D Handrail post T 1.80m (optionally with Toeboard holder T

1.80m), Handrail clamp S or Handrail post 1.50mE Lashing strap 5.00mF Doka Express anchor 16x125mm and Doka coil 16mm

9720-339-01

A

C

D

B

E

9720-247-01

A

D

C

B

F

E

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The Formwork Experts

Fall-arrest systems on the structure

Handrail post XP 1.20m● Attached with Screw-on shoe XP, railing clamp,

Handrail-post shoe or Step bracket XP● Protective grating XP, guard-rail boards or scaffold

tubes can be used as the safety barrier

a ... > 1.00 m

Handrail clamp S● Attached with integral clamp● Guard-rail boards or scaffold tubes can be used as

the safety barrier

a ... > 1.00 m

Handrail clamp T● Fixed in embedded anchoring components or

reinforcement hoops● Guard-rail boards or scaffold tubes can be used as

the safety barrier

a ... > 1.00 m

Handrail post 1.10m● Fixed in a Screw sleeve 20.0 or Attachable sleeve

24mm● Guard-rail boards or scaffold tubes can be used as

the safety barrier

a ... > 1.00 m

Follow the directions in the "Edge protection system XP" User Information booklet!

Follow the directions in the “Handrail clamp S” User information!

9803

1-20

0-01

a

geprüfte

Sicherheit

9756

-206

-01

a

geprüfte

Sicherheit

Follow the directions in the "Handrail clamp T" User Information!

Follow the directions in the "Handrail post 1.10m" User Information!

9755

-205

-01

a

geprüfte

Sicherheit

9771

-200

-01

a

geprüfte

Sicherheit

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The Formwork Experts

Beam forming supportThe Beam forming support 20 is the professional way of forming drop beams and slab stop-ends. In conjunc-tion with the "Extension 60 cm for beam support", exact height adjustment to within 1 cm is possible. This does away with time-consuming jobsite squared-timber constructions. The Beam forming support auto-matically clamps the formwork tight, resulting in clean concrete surfaces and grout-tight edges.

How to use the Beam forming sup-port 20➤ Place the Beam-forming support onto the H 20 sec-

ondary beam and push it up against the sidewall formwork.

The large bearing surface of the Beam-forming sup-port gives the sidewall formwork a high degree of (90°) angle accuracy.

➤ Clamp the Beam forming support firmly into position

The diagonal bracing of the Beam-forming support ensures that the joint between the form-ply sheets is automatically pressed together tightly when the Beam forming support is clamped.

This results in a clean concrete surface.

Formwork beams horizontal(up to a height of 60 cm)

Note:As a basic rule, it is forbidden to use formwork beams "horizontally" (i.e. with the load-direction perpendicular to the web). However, the specific applications shown here, using the Beam forming support, are permitted.

Formwork beams vertical(up to a height of 90 cm)

A Beam forming support 20B Extension 60 cm for beam support

5861

4900

0-3b

B

586148000-3b

A

9720-321-01

9720-322-01

9720-323-01

9720-324-01

9720-232-01

9720-233-01

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Drop-beam not integrated into the floor-slab / stop-end formworkAll the data below apply where 3-SO 21 mm and 3-SO 27 mm formwork sheets are used.

Drop beams of between 10 and 30 cm in height

b ... max. 100 cm l ... max. 150 cm

Sidewall formwork:● Doka beam H20 top

Drop beams of between 30 and 47 cm in height

b ... max. 100 cm l ... max. 150 cm

Sidewall formwork:● Doka beam H20 top● Squared timber 4/8 cm for drop beams of between

30 and 34 cm in height● Squared timber 8/8 cm for drop beams of between

34 and 47 cm in height

Drop beams of between 47 and 70 cm in height

b ... max. 100 cm l ... max. 150 cm

Sidewall formwork:● 2 Doka beams H20 top

Drop beams of between 70 and 90 cm in height

b ... max. 100 cm l ... max. 150 cm

Sidewall formwork:● Doka formwork beams H20 in the upright

h... Drop-beam heightb... Drop-beam widthl... Spacing of primary beams

Spacing of secondary beams

Position of Beam forming support

50.0 cm On every 3rd secondary beam

Spacing of secondary beams

Position of Beam forming support

50.0 cm On every 2nd secondary beam

9720-249-01

h

b

l

9720-250-01

h

b

l

h Spacing of secondary beams

Position of Beam forming support

Up to 60 cmFrom 60 cm

50.0 cm33.3 cm

On every 2nd secondary beamOn every 2nd secondary beam

Where the dimensional requirements are espe-cially stringent, we recommend placing a form-tie (A) through the sidewall formwork as an additional precaution.

h Spacing of secondary beams

Position of Beam forming support

Up to 85 cmFrom 85 cm

41.7 cm36.0 cm

On every secondary beamOn every secondary beam

9720-251-01

h

b

l

9720-252-01

h

b

l

A

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The Formwork Experts

Drop-beam integrated into the floor-slab

Secondary beams parallel to drop-beamAll the data below apply where 3-SO 21 mm and 3-SO 27 mm formwork sheets are used.

Drop beams of between 10 and 30 cm in height

b ... max. 100 cm l ... max. 150 cm

Base formwork● Height of squared timber = 30-h (cm)Sidewall formwork:● Doka beam H20 top● Squared timber 10/8 cm

Drop beams of between 30 and 47 cm in height

b ... max. 100 cm l ... max. 150 cm

Sidewall formwork:● Doka beam H20 top● Squared timber 4/8 cm for drop beams of between

30 and 34 cm in height● Squared timber 8/8 cm for drop beams of between

34 and 47 cm in height

Drop beams of between 47 and 60 cm in height

b ... max. 100 cm l ... max. 150 cm

Sidewall formwork:● 2 Doka beams H20 top

Drop beams of between 60 and 70 cm in height

b ... max. 100 cm l ... max. 150 cm

Sidewall formwork:● 2 Doka beams H20 top● Height of squared timber = h-60 (cm)

Slab thickness d

Spacing of secondary beams

Position of Beam forming support

20 cm30 cm

62.5 cm41.7 cm

On every 2nd secondary beamOn every 3rd secondary beam

Slab thickness d

Spacing of secondary beams

Position of Beam forming support

20 cm30 cm

41.7 cm33.3 cm

On every 2nd secondary beamOn every 2nd secondary beam

9720-253-01

hd

b

l

9720-254-01

hd

b

l

Slab thickness d

Spacing of secondary beams

Position of Beam forming support

20 cm30 cm

31.25 cm25.00 cm

On every 2nd secondary beamOn every 2nd secondary beam

Slab thickness d

Spacing of secondary beams

Position of Beam forming support

20 cm30 cm

40.0 cm-

On every secondary beam-

9720-255-01

hd

b

l

9720-256-01

hd

b

l

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The Formwork Experts

Secondary beams perpendicular to drop-beamAll the data below apply where 3-SO 21 mm and 3-SO 27 mm formwork sheets are used.Floor influence zone on either side of the drop-beam max. 1.0 m

Drop beams of between 10 and 30 cm in height

b ... max. 100 cm l ... max. 150 cm

Base formwork● Height of squared timber = 30-h (cm)Sidewall formwork:● Doka beam H20 top● Squared timber 10/8 cm

Drop beams of between 30 and 40 cm in height

b ... max. 100 cm l ... max. 150 cm

Sidewall formwork:● Doka beam H20 top● Height of squared timber = h-20 (cm)

Drop beams of between 40 and 51 cm in height

b ... max. 100 cm l ... max. 150 cm

Sidewall formwork:● Doka beam H20 top● Height of squared timber = h-40 (cm)

Drop beams of between 51 and 70 cm in height

b ... max. 100 cm l ... max. 150 cm

Sidewall formwork:● Doka beam H20 top● Squared timber 5/8 cm for drop beams of between

51 and 60 cm in height● Squared timber 10/8 cm for drop beams of between

60 and 70 cm in height

h... Drop-beam heightb... Drop-beam widthl... Spacing of primary beams

Slab thickness d

Spacing of secondary beams

Position of Beam forming support

20 cm30 cm

62.5 cm41.7 cm

On every 2nd secondary beamOn every 3rd secondary beam

Slab thickness d

Spacing of secondary beams

Position of Beam forming support

20 cm30 cm

50.0 cm41.7 cm

On every 2nd secondary beamOn every 2nd secondary beam

9720-257-01

hd

b

l

9720-258-01

hd

b

l

Slab thickness d

Spacing of secondary beams

Position of Beam forming support

20 cm30 cm

41.70 cm31.25 cm

On every 2nd secondary beamOn every 2nd secondary beam

Slab thickness d

Spacing of secondary beams

Position of Beam forming support

20 cm30 cm

40.0 cm-

On every secondary beam-

9720-259-01

hd

b

l

9720-260-01

hd

b

l

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The Formwork Experts

Slab stop-ends

Universal end-shutter support 30cmConfiguration A: Fastened with nails

d ... slab thickness max.30 cm

Configuration B: Fastened with Spax screws

d ... slab thickness max.30 cm

Structural design

A Universal end-shutter support 30cmB Nail 3.1x80C Doka formwork sheet 3-SO

Tip for striking formwork:➤ Take out the nails on the stop-end side.➤ Put the claw of a hammer under the corner

(put a piece of wood under it to protect the formwork sheeting)

➤ Lever up the end-shutter support

9776-202-01

d

B

A

B

C

Tr652-203-02

A Universal end-shutter support 30cmC Doka formwork sheet 3-SOD Spax screws 4x40 (fully threaded)E Doka beam H20

Max. influence width: afor slab thickness of [cm]

How fastened: Configuration 20 25 304 nails 3.1x80 A 90 50 304 Spax screws 4x40 (fully threaded) B 220 190 160

d

D

A

D

EC

9776-203-01

TR652-202-01

a

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The Formwork Experts

Secondary-beam stabilisersSecondary-beam stabilisers are used to prevent form-work beams tipping over while panels are being laid on them.

Advantages:● Special claws to prevent slippage on the beam-

flange● No work-platform scaffold needed, as the stabilisers

can be mounted/dismounted from ground level using an Alu beam fork H20

● Needs only small commissioning quantities, as the Secondary-beam stabilisers can be re-set in tandem with the formwork erection cycle:- approx. 20 Secondary-beam stabilisers 1- approx. 10 Secondary-beam stabilisers 2

Note:In certain special situations, (e.g. when forming inclined floor-slabs), Secondary-beam stabilisers can also be used for transferring horizontal loads.For more information, please contact your Doka techni-cian.

How to mount:➤ Hang the Secondary-beam stabilisers into place with

an Alu beam fork H20.

The secondary beam is now held in place.➤ Lay the ProFrame panels on the beams.➤ After the ProFrame panels have been laid, unhook

and remove the Secondary-beam stabilisers with an Alu beam fork H20.

Secondary-beam stabiliser 1 Secondary-beam stabiliser 2

98039-217-01 98039-217-02

9803

9-21

2-01

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The Formwork Experts

Combining Doka table systemsBecause the superstructures of all Doka floor-slab sys-tems share the same basic structure, they can also be used together on the site.

Dokamatic and Dokaflex tablesThe Doka tables are pre-assembled, and save on both labour and crane time. With the shifting trolley plus attachable drive unit, the tables can easily be wheeled across to their next location by just one man working on his own. The system is optimised to give the very short-est forming-times on large areas, and copes well even with varying structural-design and geometrical require-ments.

Doka XtraThis value-for-money, high-speed system has a pre-defined stripping sequence which boosts efficiency and evens out the site crew's workload. Any type of form-facing can be used, enabling all architectural wishes regarding the concrete surface to be met.

For more information, see the "Dokamatic table" and "Dokaflex table" User Information booklets.

For more information, please see the User Infor-mation booklet "Doka Xtra".

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The Formwork Experts

Formwork planning with Tipos-Doka

Tipos-Doka helps you to form even more efficientlyTipos-Doka has been developed to assist you in planning the use of your Doka formwork. For wall formwork, floor formwork and platforms, it puts the same tools into your hands that we at Doka use ourselves for formwork planning.

Easy to use, fast and accurate resultsThe easy-to-use interface makes for very fast working. From when you input your layout (with the "Schal-Igel"® on-screen assistant), all the way through to when you manually put the finishing touches to the formwork solution the program gives you. All this saves time - yours.The program contains a large number of templates and wizards, so you can be sure of always getting the opti-mum technical and economical solution to your form-work task. This makes for greater operational reliability, and cuts costs.You can get to work right away with the piece-lists, plans, views, sections and perspective drawings that the program gives you. Operational reliability is also enhanced by the high level of detail of the plans.

Formwork drawings really can be as clear and detailed as this! Both for the layout and for spatial representations, Tipos-Doka sets an impressive new standard of visual presentation.

Always the right quantities of form-work and accessories

You can import the automatically generated piece-lists into many other programs for further processing.Formwork components and accessories that have to be organised at short notice, or replaced by improvisation, are the ones that cost the most. This is why Tipos-Doka offers complete piece-lists that leave no room for improvisation. Planning with Tipos-Doka eliminates costs before they have a chance to even arise. And your depot can make the best possible use of its stocks.

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The Formwork Experts

Transporting, stacking and storing

Doka skeleton transport box 1.70x0.80m

Storage and transport devices for small items:● durable● stackableSuitable transport appliances:● crane● pallet stacking truck● forklift truckTo make the "Doka skeleton transport box" easier to load and unload, one of its sidewalls can be opened.

Using Doka skeleton transport boxes 1.70x0.80m as storage units

Max. n° of boxes on top of one another

Using Doka skeleton transport boxes 1.70x0.80m as transport devices

Lifting by crane

Repositioning by forklift truck or pallet stacking truckThe forks can be inserted under either the broadside or the narrowside of the containers.

Utilise the benefits of Doka multi-trip packaging on your site.Multi-trip packaging such as containers, stacking pal-lets and skeleton transport boxes keep everything in place on the site, minimise time wasted searching for parts, and streamline the storage and transport of sys-tem components, small items and accessories.

Max. load: 700 kgPermitted imposed load: 3150 kg

☞ ● Multi-trip packaging items that each contain very different loads must be stacked with the heaviest ones at the bottom and the lightest ones at the top!

● Rating plate must be in place and clearly leg-ible

Outdoors (on the site) IndoorsFloor gradient up to 3% Floor gradient up to 1%

2 5It is not allowed to stack empty pallets on top of one another!

➤ Only lift the boxes when their sidewalls are closed!

☞ ● Multi-trip packaging items may only be lifted one at a time.

● Use a suitable lifting chain. (Do not exceed the permitted load capacity). e.g: Doka 4-part chain 3.20m.

● Spread-angle β max. 30°!

9234-203-01

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The Formwork Experts

Doka multi-trip transport box 1.20x0.80m galv.

Storage and transport devices for small items:● durable● stackableSuitable transport appliances:● crane● pallet stacking truck● forklift truck

Multi-trip transport box partitionDifferent items in the Multi-trip transport box can be kept separate with the Multi-trip transport box partitions 1.20m or 0.80m.

Possible ways of dividing the box

Using Doka multi-trip transport boxes as stor-age units

Max. n° of boxes on top of one another

Using Doka multi-trip transport boxes as transport devices

Lifting by crane

Repositioning by forklift truck or pallet stacking truckThe forks can be inserted under either the broadside or the narrowside of the containers.

Max. load: 1500 kgPermitted imposed load: 7900 kg

☞ ● Multi-trip packaging items that each contain very different loads must be stacked with the heaviest ones at the bottom and the lightest ones at the top!

● Rating plate must be in place and clearly leg-ible

A Slide-bolt for fixing the partition

Multi-trip transport box partition Lengthways Crossways

1.20m max. 3 partitions —0.80m — max. 3 partitions

Tr75

5-20

0-02

A

Tr755-200-04 Tr755-200-05

Outdoors (on the site) IndoorsFloor gradient up to 3% Floor gradient up to 1%

3 6It is not allowed to stack empty pallets on top of one another!

☞ ● Multi-trip packaging items may only be lifted one at a time.

● Use a suitable lifting chain. (Do not exceed the permitted load capacity). e.g: Doka 4-part chain 3.20m.

● Spread-angle β max. 30°!

9206-202-01

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Doka stacking pallet 1.55x0.85m and 1.20x0.80mStorage and transport devices for long items:● durable● stackableSuitable transport appliances:● crane● pallet stacking truck● forklift truckThe Bolt-on caster set B turns the stacking pallet into a fast and manoeuvrable transport trolley.

Using Doka stacking pallets as storage units

Max. n° of boxes on top of one another

Using Doka stacking pallets as transport devices

Lifting by crane

Repositioning by forklift truck or pallet stacking truck

Follow the directions in the "Bolt-on castor set B" Operating Instructions!

Max. load: 1100 kgPermitted imposed load: 5900 kg

☞ ● Multi-trip packaging items that each contain very different loads must be stacked with the heaviest ones at the bottom and the lightest ones at the top!

● Rating plate must be in place and clearly leg-ible

Outdoors (on the site) IndoorsFloor gradient up to 3% Floor gradient up to 1%

2 6It is not allowed to stack empty pallets on top of one another!

☞ ● How to use with bolt-on castor set: Always apply the fixing brake when the con-tainer is "parked".When Doka stacking pallets are stacked, the bottom pallet must NOT be one with a bolt-on caster set mounted to it.

☞ ● Multi-trip packaging items may only be lifted one at a time.

● Use a suitable lifting chain. (Do not exceed the permitted load capacity). e.g: Doka 4-part chain 3.20m.

● Load the items centrically.● Fasten the load to the stacking pallet so that

it cannot slide or tip out.● When lifting stacking pallets to which Bolt-on

castor sets B have been attached, you must also follow the directions in these Operating Instructions!

● Spread-angle β max. 30°!

aDoka stacking pallet 1.55x0.85m max. 4.0 mDoka stacking pallet 1.20x0.80m max. 3.0 m

☞ ● Load the items centrically.● Fasten the load to the stacking pallet so that

it cannot slide or tip out.

92815-224-01

a

= =

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Doka accessory boxStorage and transport devices for small items:● durable● stackableSuitable transport appliances:● crane● pallet stacking truck● forklift truckThe Doka accessory box is the tidy, easy-to-find way of storing and stacking all interconnection and form-tie components.The Bolt-on caster set B turns the stacking pallet into a fast and manoeuvrable transport trolley.

Doka accessory box as storage units

Max. n° of boxes on top of one another

Doka accessory box as transport devices

Lifting by crane

Repositioning by forklift truck or pallet stacking truckThe forks can be inserted under either the broadside or the narrowside of the containers.

Follow the directions in the "Bolt-on castor set B" Operating Instructions!

Max. load: 1000 kgPermitted imposed load: 5530 kg

☞ ● Multi-trip packaging items that each contain very different loads must be stacked with the heaviest ones at the bottom and the lightest ones at the top!

● Rating plate must be in place and clearly leg-ible

Outdoors (on the site) IndoorsFloor gradient up to 3% Floor gradient up to 1%

3 6It is not allowed to stack empty pallets on top of one another!

☞ ● How to use with bolt-on castor set: Always apply the fixing brake when the con-tainer is "parked".When Doka accessory boxes are stacked, the bottom box must NOT be one with a bolt-on castor set mounted to it.

☞ ● Multi-trip packaging items may only be lifted one at a time.

● Use a suitable lifting chain. (Do not exceed the permitted load capacity). e.g: Doka 4-part chain 3.20m.

● When lifting stacking pallets to which Bolt-on castor sets B have been attached, you must also follow the directions in these Operating Instructions!

● Spread-angle β max. 30°!

92816-206-01

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The Formwork Experts

Bolt-on castor set BThe Bolt-on caster set B turns the stacking pallet into a fast and manoeuvrable transport trolley.Suitable for drive-through access openings > 90 cm.

The Bolt-on caster set B can be mounted to the follow-ing multi-trip packaging items:● Doka accessory box● Doka stacking pallets

Stacking strap 50The Stacking strap 50 is the tidy, space-saving way of storing and handling ProFrame panels.

Packaging unit: 2 units

● The Stacking strap 50 is three things in one - base rest profile, lashing strap and edge protection.

● ProFrame panels are delivered ex-works strapped together with Stacking straps 50. Two Stacking straps 50 are needed per stack of panels.

● It can also be used in conjunction with the wheel-around Doka stacking pallet (for handling stacks of panels with no need for a crane).

Follow the directions in the Operating Instruc-tions!

ProFrame panels 21mm 50 unitsProFrame panels 27mm 40 units

98039-214-01

9776-205-01

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The Formwork Experts

Reshoring props, concrete technology and striking

When is the best time to strike?In the building construction field, the load occurring dur-ing pouring (i.e. the weight of the uncovered floor) will generally be approx. 50% of the design load of the floor-slab (dead weight + flooring + service load).This means that the formwork can be struck once the concrete has reached 50% of its 28-day strength. The loading safety of the floor-slab is then equal to that of the finished structure.

Why put up reshoring props after striking the formwork?Depending on the construction sequence, reshoring props may be needed to carry service loads on the new floor-slab, and/or concreting-loads from the next floor to be poured.

Positioning the reshoring props cor-rectlyReshoring props have the job of spreading loads between the new floor-slab and the floor beneath it. This load distribution will depend on the relationship between the rigidities of these two floor-slabs.The required numerical relationship between reshoring props and formwork props can be stated for the follow-ing two limit cases:● only approx. 0.4 reshoring props per formwork

prop where both floor-slabs have similar rigidities● only approx. 0.8 reshoring props per formwork

prop where the floor-slab below has a considerably higher rigidity (foundation slab).

Strength development in the new concreteThe following diagrams show the strength development where different grades of cement are used. If the tem-perature of the concrete is < 5°C, the chemical reac-tions are very greatly slowed down. This is why low temperatures require cements that have rapid heat evolution and strength development.

Reference values for the evolution of the compres-sive strength of the concrete at storage tempera-tures of 20°C and 5°C as a function of the type of cement used

Water/binding-agent (cement) ratio = 0.50

☞ Important note:If the load is not removed from the floor props at this stage, they will remain loaded with the dead weight of the floor-slab.When the floor above is concreted, this may lead to a doubling of the load that is being applied to the floor props.The floor props are not designed to cope with such an overload, and the result may be dam-age to the formwork, the floor props and the structure.

☞ Ask an expert!As a rule, the question of using reshoring props should be referred to the responsible experts, regardless of the information given above. If there is any doubt, particularly where dissimilar floor systems are involved, the decision must be referred to the responsible structural designer.

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Age of concrete in days

Com

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-age

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Age of concrete in days

A Z 45 F, PZ 475 (CEM I 42.5 R/52.5 R/52.5 N)B Z 35 F, PZ 375 (CEM II 32.5 R/42.5 N)C Z 35 L (CEM III 32.5 N)

100

1 3 5 2820

40

60

80

2 107 14 21

9720

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A

9720

-100

100

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A

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Deflection of the new concreteThe modulus of elasticity of the concrete has already reached more than 90 % of the 28-day value after only 3 days, regardless of the formulation of the concrete. The increase in the elastic deformation taking place in the new concrete is thus only negligible.The creep deformation, which only finally ceases after several years, is several times more than the elastic deformation.However, early striking - e.g. after 3 days instead of 28 - only leads to an increase in the total deformation of less than 5 %.The part of this deformation accounted for by creep deformation, however, may be anything between 50 % and 100 % of the standard value, due to such variable influences as the strength of the aggregates, and the atmospheric humidity. This means that the total deflec-tion of the floor-slab is practically independent of the time at which the formwork was struck.

Cracks in new concreteThe bonding strength between the reinforcement steel and the concrete develops more rapidly in the new con-crete than does its compressive strength. This means that early striking does not have any negative influence upon the size and distribution of cracks on the tension side of reinforced concrete constructions.Other cracking phenomena caused by e.g. shrinkage, premature striking, impeded deformation etc. can be countered effectively by appropriate curing methods.

Curing of new concreteNew site-placed concrete is exposed to influences which may cause cracking and slow down its strength development:● premature drying● over-rapid cooling in the first few days● excessively low temperatures or frost● mechanical damage to the surface of the concrete● etc.The simplest precaution is to leave the formwork on the concrete surface for longer. As well as the familiar extra curing measures, this measure should be carried out in any case.

Striking the formwork from wide-spanned floor-slabs with support centres of over 7.5mIn the case of thin, wide-spanned concrete floor-slabs (e.g. in multistorey car parks), the following points must be remembered:When the formwork is removed from beneath these floor-slab spans (i.e. when the load is taken off the floor props), the floor props that are still in place are briefly subjected to additional loads. This may lead to over-loading, and to the floor props being damaged.When planning and designing floor formworks for these very thin concrete floor slabs, it is thus essential to allow for the loads occurring during formwork removal, as well as for the usual design loads.Please consult your Doka technician.

l ... Effective floor-slab spans of 7.50 m and over

☞ The basic rule is:The formwork should be removed starting from the middle of the floor slab (i.e. from mid-span), and working towards the edges. For wide spans, this procedure MUST be fol-lowed!

A Load redistribution

9767-214-01

l

A A

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Component overviewDoka Floor SystemsDokaflex 1-2-4

Doka floor prop Eurex 20 top 150 8.0 586096000Length: 92 - 150 cmDoka floor prop Eurex 20 top 250 12.7 586086400Length: 148 - 250 cmDoka floor prop Eurex 20 top 300 14.3 586087400Length: 173 - 300 cmDoka floor prop Eurex 20 top 350 17.4 586088400Length: 198 - 350 cmDoka floor prop Eurex 20 top 400 21.6 586089400Length: 223 - 400 cmDoka floor prop Eurex 20 top 550 32.3 586090400Length: 298 - 550 cmDoka-Deckenstütze Eurex 20 top

Doka floor prop Eurex 20 250 12.9 586086000Length: 152 - 250 cmDoka floor prop Eurex 20 300 15.3 586087000Length: 172 - 300 cmDoka floor prop Eurex 20 350 17.8 586088000Length: 197 - 350 cmDoka floor prop Eurex 20 400 22.2 586089000Length: 227 - 400 cmDoka floor prop Eurex 20 550 34.6 586090000Length: 297 - 550 cmDoka-Deckenstütze Eurex 20

Doka floor prop Eurex 30 top 250 12.8 586092400Length: 148 - 250 cmDoka floor prop Eurex 30 top 300 16.4 586093400Length: 173 - 300 cmDoka floor prop Eurex 30 top 350 20.7 586094400Length: 198 - 350 cmDoka floor prop Eurex 30 top 400 24.6 586095400Length: 223 - 400 cmDoka floor prop Eurex 30 top 450 29.1 586119400Length: 248 - 450 cmDoka floor prop Eurex 30 top 550 38.6 586129000Length: 303 - 550 cmDoka-Deckenstütze Eurex 30 top

Doka floor prop Eurex 30 250 14.8 586092000Length: 152 - 250 cmDoka floor prop Eurex 30 300 16.7 586093000Length: 172 - 300 cmDoka floor prop Eurex 30 350 20.5 586094000Length: 197 - 350 cmDoka floor prop Eurex 30 400 24.9 586095000Length: 227 - 400 cmDoka floor prop Eurex 30 450 29.2 586119000Length: 248 - 450 cmDoka-Deckenstütze Eurex 30

Doka floor prop Eco 20 250 11.7 586134000Length: 152 - 250 cmDoka floor prop Eco 20 300 13.0 586135000Length: 172 - 300 cmDoka floor prop Eco 20 350 15.3 586136000Length: 197 - 350 cmDoka floor prop Eco 20 400 19.1 586137000Length: 227 - 400 cmDoka-Deckenstütze Eco 20

Removable folding tripod 15.6 586155000Stützbein

Lowering head H20 6.1 586174000Absenkkopf H20

Galvanised

Galvanised

Galvanised

Galvanised

Galvanised

GalvanisedHeight: 100 cmDelivery condition: folded closed

GalvanisedLength: 25 cmWidth: 20 cmHeight: 38 cm

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4-way head H20 4.0 586170000Vierwegkopf H20

Spring locked connecting pin 16mm 0.25 582528000Federbolzen 16mm

Supporting head H20 DF 0.77 586179000Haltekopf H20 DF

U-head 12.5cm 1.2 586171000Kopfgabel 12,5cm

Bracing clamp B 1.4 586195000Verschwertungsklammer B

Secondary-beam stabiliser 1 1.6 586196000Secondary-beam stabiliser 2 2.1 586197000Querträgersicherung

Universal end-shutter support 30cm 1.0 586232000Universal-Abschalwinkel 30cm

Beam forming support 20 6.9 586148000Balkenzwinge 20

Extension for beam forming support 60cm 4.4 586149000Balkenaufsatz 60cm

Doka floor end-shutter clamp 12.5 586239000Doka-Deckenabschalklemme

End-shutter shoe 1.6 586257000Abschalschuh

End-shutter tie rod 15.0 15-40cm 0.91 586258000Abschalanker 15,0 15-40cm

Wheel-around scaffold DF 44.0 586157000Mobilgerüst DF

Universal dismantling tool 3.7 582768000Universal-Lösewerkzeug

Alu beam fork H20 2.4 586182000Alu-Trägergabel H20

Doka beam H20 top N 2.65m 13.8 189013000Doka beam H20 top N 3.90m 20.0 189017000Doka-Träger H20 top N

GalvanisedLength: 25 cmWidth: 20 cmHeight: 33 cm

GalvanisedLength: 15 cm

GalvanisedLength: 19 cmWidth: 11 cmHeight: 8 cm

GalvanisedHeight: 23 cm

Painted blueLength: 36 cm

GalvanisedHeight: 38.7 cm

GalvanisedHeight: 21 cm

GalvanisedLength: 30 cmHeight: 35 cm

Galvanised

GalvanisedHeight: 137 cm

GalvanisedHeight: 13.5 cm

GalvanisedLength: 55 cm

AluminiumLength: 195 cmWidth: 80 cmHeight: 290 cmFollow the directions in the "Operat-ing Instructions"!

GalvanisedLength: 75.5 cm

AluminiumPowder-coated yellowLength: 176 cm

Varnished yellow

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Doka beam H20 top P 2.65m 14.3 189703000Doka beam H20 top P 3.90m 20.8 189707000Doka-Träger H20 top P

ProFrame panel 21mm 200/50cm 11.0 186118000ProFrame panel 21mm 200/50cm BS 11.0 186118100ProFrame panel 21mm 250/50cm 13.8 186117000ProFrame panel 21mm 250/50cm BS 13.8 186117100ProFrame-Paneel 21

ProFrame panel 27mm 200/50cm 13.5 187178000ProFrame panel 27mm 200/50cm BS 13.5 187178100ProFrame panel 27mm 250/50cm 16.9 187177000ProFrame panel 27mm 250/50cm BS 16.9 187177100ProFrame-Paneel 27

Doka formwork sheet 3-SO 21mm 200/50cm 10.5 186009000Doka formwork sheet 3-SO 21mm 250/50cm 13.1 186011000Doka-Schalungsplatte 3-SO 21mm

Doka formwork sheet 3-SO 27mm 200/50cm 13.0 187009000Doka formwork sheet 3-SO 27mm 250/50cm 16.3 187011000Doka-Schalungsplatte 3-SO 27mm

Handrail clamp S 11.5 580470000Schutzgeländerzwinge S

Handrail clamp T 12.3 584381000Schutzgeländerzwinge T

Handrail post 1.10m 5.6 584384000Schutzgeländer 1,10m

Attachable sleeve 24mm 0.03 584385000Steckhülse 24mm

Screw sleeve 20.0 0.03 584386000Schraubhülse 20,0

Scaffold tube 48.3mm 1.00m 3.6 682014000Scaffold tube 48.3mm 1.50m 5.4 682015000Scaffold tube 48.3mm 2.00m 7.2 682016000Scaffold tube 48.3mm 2.50m 9.0 682017000Scaffold tube 48.3mm 3.00m 10.8 682018000Scaffold tube 48.3mm 3.50m 12.6 682019000Scaffold tube 48.3mm 4.00m 14.4 682021000Scaffold tube 48.3mm 4.50m 16.2 682022000Scaffold tube 48.3mm 5.00m 18.0 682023000Scaffold tube 48.3mm 5.50m 19.8 682024000Scaffold tube 48.3mm 6.00m 21.6 682025000Scaffold tube 48.3mm .....m 3.6 682001000Gerüstrohr 48,3mm

Screw-on coupler 48mm 50 0.84 682002000Anschraubkupplung 48mm 50

Varnished yellow

GalvanisedHeight: 123 - 171 cm

GalvanisedHeight: 122 - 155 cm

GalvanisedHeight: 134 cm

GreyLength: 16.5 cmDiameter: 2.7 cm

YellowLength: 20 cmDiameter: 3.1 cm

Galvanised

GalvanisedWidth-across: 22 mm

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Multi-trip packaging

Doka multi-trip transport box 1.20x0.80m 75.0 583011000Doka-Mehrwegcontainer 1,20x0,80m

Multi-trip transport box partition 0.80m 3.7 583018000Multi-trip transport box partition 1.20m 5.5 583017000Mehrwegcontainer Unterteilung

Doka accessory box 106.4 583010000Doka-Kleinteilebox

Bolt-on castor set B 33.6 586168000Anklemm-Radsatz B

Doka skeleton transport box 1.70x0.80m 87.0 583012000Doka-Gitterbox 1,70x0,80m

Doka stacking pallet 1.55x0.85m 42.0 586151000Doka-Stapelpalette 1,55x0,85m

Doka stacking pallet 1.20x0.80m 39.5 583016000Doka-Stapelpalette 1,20x0,80m

Stacking strap 50 3.1 586156000Stapelgurt 50

GalvanisedHeight: 78 cmFollow the directions in the "Operat-ing Instructions"!

Timber parts varnished yellowSteel parts galvanised

Timber parts varnished yellowSteel parts galvanisedLength: 154 cmWidth: 83 cmHeight: 77 cmFollow the directions in the "Operat-ing Instructions"!

Painted blue

GalvanisedHeight: 113 cmFollow the directions in the "Operat-ing Instructions"!

GalvanisedHeight: 77 cmFollow the directions in the "Operat-ing Instructions"!

GalvanisedHeight: 77 cmFollow the directions in the "Operat-ing Instructions"!

Powder-coated, bluePackaging unit: 2 pcs.

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Dokaflex 1-2-4:The versatile hand-set system for floor-slabs

The huge versatility of Dokaflex 1-2-4 lets you form any layout,drop beams, stepped floors and filigree slabs swiftly and economically – by hand.

The formwork planning is taken care of by the handy slide-rule, which fits into any trouser pocket.Any type of form-facing can be used, giving you scope to achieve any desired concrete surface.

Dokaflex 1-2-4 is available for rental, leasing or purchase.At any of the Doka branches in your region.

Why not give us a call?

The Doka Group's central plant at Amstetten, Austria

KazakhstanLatviaLithuaniaLuxembourgMaroccoMexicoNetherlandsNew ZealandOmanPanamaPolandPortugalRomaniaRussiaSenegalSerbiaSlovakiaSloveniaSpainSwitzerlandTaiwanThailandUkraineVietnam

Doka internationalDoka GmbH

Josef Umdasch Platz 1, A 3300 Amstetten, AustriaTel.: +43 (0)7472 605-0, Fax: +43 (0)7472 64430

E-Mail: [email protected]: www.doka.com

AlgeriaSARL Doka Algérie24 A Route de la RassautaBordj-El-Kifane, BP 170, 16120 AlgerTelephone: +213 (0)21 21 27 26Telefax: +213 (0)21 21 28 98E-Mail: [email protected]

CanadaDoka Canada Ltd./Ltée5404 - 36th Street S.E.Calgary AB T2C 1P1Telephone: +1 403 243-6629Telefax: +1 403 243-6787E-Mail: [email protected]

ChinaDoka Formwork (Shanghai) Co. Ltd.Bldg. 2, No.3883 Yuanjiang RoadMinhang DistrictShanghai 201109Telephone: +86 21 6090 0899Telefax: +86 21 6090 1099E-Mail: [email protected]

IndiaDoka India Pvt. Ltd.Hiranandani Business ParkSentinel Bldg 2nd FloorCommercial Premises No 201&202Powai, Mumbai - 400 076Telephone: +91 22 402 64435Telefax: +91 22 402 64436E-Mail: [email protected]

IrelandDoka Ireland Formwork Techn. Ltd.Monasterboice, DroghedaCounty LouthTelephone: +353 (0)41 686 1620Telefax: +353 (0)41 686 1525E-Mail: [email protected]

JapanDoka Japan K.K.Miwanoyama 744-6 Nagareyama-shi270-175 Chiba-KenTelephone: +81 (0)471 78 8808Telefax: +81 (0)471 78 8812E-Mail: [email protected]

KoreaDoka Korea Ltd.Rm.N.220, Doosan Venture Digm Bldg., 126-1 Pyeongchon-Dong, Dongan-Gu, 431-755 Anyang City, Gyeonggi-DoTelephone: +82 31 478 3700Telefax: +82 31 478 3701E-Mail: [email protected]

KuwaitDoka KuwaitDiv. of Riham Gen. Trad.& Cont. Co.P.O. Box 2217 Salmiyah22023 KuwaitTelephone: + 965 2 4822 462Telefax: +965 2 4822 472E-Mail: [email protected]

LebanonDoka Branch LebanonSodeco Square, Block C / 9th floorBeirutTelephone: +961 (0)1 612569Telefax: +961 (0)1 612570E-Mail: [email protected]

NorwayDoka Norge ASHeggstadmoen 4N 7080 HeimdalTelephone: +47 72 89 38 10Telefax:n +47 72 89 38 11E-Mail: [email protected]

Other subsidiaries andrepresentatives:

AngolaAzerbaijanBahrainBelgiumBelarusBosnia andHerzegovinaBrazilBulgariaChileCroatiaCzech RepublicDenmark EgyptEstoniaFinlandFranceGermanyGreece HungaryIceland IranItalyJordan

QatarDoka Qatar WLL2nd Gate, Light Industrial AreaMesaieed, QatarTelephone: +974 44500628Telefax: +974 44500608E-Mail: [email protected]

Saudi ArabiaDoka Formwork TechnologyMahmoud Othman & Sons LLCP.O. Box 7620Jeddah 21472Telephone: +966 0)2 669 10 08Telefax: +966 (0)2 664 86 25E-Mail: [email protected]

SingaporeDoka Formwork Pte. Ltd.9 Gul CircleSingapore 629565Telephone: +65 6897 7737Telefax: +65 6897 8606E-Mail: [email protected]

South AfricaDoka South Africa (Pty) Ltd.Johannesburg BranchCA Brand Bldg, 2 Sebasa RoadChloorkop Ext.10Kempton Park 1619Telephone: +27 (0)11 310 9709Telefax: +27 (0)11 310 9711E-Mail: [email protected]

SwedenDoka Sverige ABKurödsvägen 20S 451 55 UddevallaTelephone: +46 (0)10 45 16 300Telefax: +46 (0)10 45 16 309E-Mail: [email protected]

TunisiaDoka Tunisia Ltd.Bureau de LiaisonZone Industrielle, Rue d l‘usineLe Kram 2015 TunisTelephone: +216 (0)71 977 350Telefax: +216 (0)71 977 856E-Mail: [email protected]

TurkeyDoka Kalip-IskeleSanayi ve Ticaret A.S.Güzeller Org. San. BölgesiInönü Mah. Nazarbayev Sok. No:1941400 Gebze, KocaeliTelephone: +90 262 751 50 66Telefax: +90 262 751 50 05E-Mail: [email protected]

United Arab EmiratesDoka Gulf FZEP.O. Box 61407Jebel Ali Free Zone, DubaiTelephone: +971 (0)4 870 8700Telefax: +971 (0)4 870 8702E-Mail: [email protected]

United KingdomDoka UK Formwork Technologies LtdMonchelsea Farm, Heath RoadBoughton MonchelseaMaidstone, Kent, ME17 4JDTelephone: +44 (0)1622 74 90 50Telefax: +44 (0)1622 74 90 33E-Mail [email protected]

USADoka USA, Ltd.214 Gates RoadLittle Ferry, NJ 07643Telephone: +1 201 329-7839Telefax: +1 201 641-6254E-Mail: [email protected]: www.dokausa.com

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