999791002 GB Method statement Doka formwork beams · · 2018-03-06The FormworkExperts 06/2007 NK 999791002 GB User information Method statement Doka formwork beams

The Formwork Experts

06/2007 NK

GB999791002

User information

Method statement

Doka formwork beams

The Formwork Experts2 999791002 - 06/2007 NK

User information Doka formwork beams

General instructions for compliant utilisation

● This User Information booklet (Method State-ment) is aimed at everyone who will be working with the Doka product or system it describes. It contains information on how to set up this sys-tem, and on correct, compliant utilisation of the system.This User Information booklet can also be used as a generic method statement or incorporated with a site-specific method statement.

● Doka products are ONLY to be used in accord-ance with the Doka User Information booklets or other technical documentation provided by Doka.

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

● If any deviation from these instructions is con-templated, or any application which goes beyond those described here, then revised static calculations must be produced for check-ing, as well as supplementary assembly instructions.

● The customer is to ensure that the User Infor-mation booklet (Method Statement) provided by Doka is available to all users, and that they have been made aware of it and have easy access to it at the usage location.

● Always observe all industrial safety regulations and other safety rules applying to the applica-tion and utilisation of our products in the coun-try and/or region in which you are operating.

● 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.

● 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 dam-aged, deformed, or weakened due to wear, cor-rosion or rot.

● Only original Doka components may be used as spare parts.

● 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 customer must ensure that this product is erected and dismantled, reset and generally used for its intended purpose under the direc-tion and supervision of suitably skilled persons with the authority to issue instructions.

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

● Persons who are incapable of reading and understanding this booklet, or who can do so only with difficulty, must be instructed and trained by the customer.


3999791002 - 06/2007 NK The Formwork Experts

Elementary safety warnings

Symbols usedThe following symbols are used in this booklet:

MiscellaneousWe reserve the right to make alterations in the inter-ests of technical progress.Unless otherwise stated, all dimensions are given in cm.

● Doka products and systems must be set up in such a way that all loads acting upon them are safely transferred!

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

● Provide safe workplaces for those using the formwork (e.g. for when it is being erected/dis-mantled, modified or repositioned etc). It must be possible to get to and from these workplaces via safe access routes!

● Do not exceed the permitted fresh-concrete pressures. Excessively high pouring rates lead to formwork overload, cause greater deflection and risk causing breakage.

● 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 scaffolding, platforms or formwork that is still in place!

● Observe all regulations applying to the hand-ling 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 connections must be checked regularly to ensure that they still fit properly and are func-tioning correctly.It is very important to check all screw-type con-nections and wedge-clamped joins whenever the construction operations require (particu-larly after exceptional events such as storms), and to tighten them if necessary.

● All components must be stored safely, follow-ing all the special Doka instructions given in the relevant sections of this User Information book-let!

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

● The faulty utilisations shown in the various sections of this booklet are only a selection of examples taken from our many years' experi-ence in the field.

Important note

Failure to observe this may lead to malfunction or damage.

Caution / warning / danger

Failure to observe this may lead to material damage, and to injury to health which may range up to the severe or even life-threatening.

Instruction

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

Sight-check

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

Tip

Points out useful practical tips.

☞



Product description

Doka formwork beamsDoka formwork beams are solid-webbed beams made of wood or wood-based material to EN 13377 and in accordance with the approvals issued by the German Institute for Construction Engineering, Ber-lin (Z-9.1-***), exclusively for use in wall and floor formwork.

Other features include:● Beam-flange marking for the Dokaflex system● Option of adding "customer name" to wording

(indicated by the suffix "BS" in the article desig-nation.).

● Wood for flanges is graded by automatic grading machines for maximised dependability

Meanings of the code letters used in the article des-ignation

Tolerance in height ±1.0 mm at 12% residual mois-ture content of the wood.

Code letterP Web made of special flat-pressed sheetN Web made of three-ply

top Innovative polyurethane end reinforcement for highly effective protection of the formwork beam

eco Tried-and-tested end reinforcement in the form of bevelled ends with plastic rivet in the beam flange

A Web

B Flange

C Beam-flange markings for the Dokaflex system

D System holes

E End reinforcement (plastic cap for Doka beam H20 top, rivet for Doka beam H20 eco)

F Notch for chalking line

The innovative end reinforcement of the Doka beam H20 top significantly reduces damage to the beam ends.

A

B

E

C

D

F

H16N and P

H20 N and P H24 N H30 H36

Approval numberZ-9.1-222

(N)Z-9.1-391

(P)

Z-9.1-21 (N)

Z-9.1-391 (P)

Z-9.1-317 Z-9.1-21 Z-9.1-21

16.0

3.56.5

20.0

4.08.0

24.0

8.0 4.0

30.5

5.4

9.7 9.7

36.0

5.4

9736

-252

-01



Instructions for assembly and useDoka beams and Doka formwork beams can be used only as formwork beams for floor and wall formwork and only when subjected to the loads occurring in situations of direct support for floor or wall formwork in structural concreting, but not for higher individual loads (e.g. safety beams).

Example of use

In order to maximise durability, it is important to handle the components with due care; this applies particularly when stripping out floor-slab form-work.

You will also find information on correct usage in the in user information for the individual products, for example:● Doka large-area formwork Top50● Dokaflex● Doka Xtra

Permissible values from EN 13377, Schedule E

The values in the tables include allowances as fol-lows γF = 1.5, kmod of 0.9 and γM = 1.3.Based on a residual moisture content of 20 % or less. The values must be adjusted accordingly if conditions of use differ.*According to approval issued by the Institute for Construction Engineering, Berlin

Deflection diagrams

Doka formwork beams H20 N and P

M ... permissible bending momentQ ... permissible transverse forcep ... applied load (working load)

Doka formwork beams H16 N and P


H20N and

P

H16P

H16N H24 H30* H36*

per. Q [kN] 11.0 8.5 7.5 1.5 15.0 17.0per. M [kNm] 5.0 2.7 2.7 6.5 13.5 17.0E·J [kNm2] 450 250 250 700 1250 1850per. span [m] 4.00 3.20 3.20 4.80 6.00 6.00

9768-200-01

Def

lect

ion

[m

m]

Span L [m]

Def

lect

ion

[m

m]

Span L [m]

9732-105

0 1.0 2.0 3.0 4.0 5.0

16

14

12

10

8

6

4

2

0

L/500

Q M

0.5 kN/m

1

1.5

2

2.5

3

3.5

4

4.5

5

10

15

2030

40

7.5

L

p [kN/m]

9732-110

0 0.5 1.0 1.5 2.0 2.5

16

14

12

10

8

6

4

2

03.0 3.5

L/500Q

M

0.5 kN/m

1

1.5

22.5

3

3.5

4

4.5

5

10

1520

3040

7.5

L

p [kN/m]



Doka formwork beams H24






Possible incorrect usages

Def

lect

ion

[m

m]

Span L [m]

Def

lect

ion

[m

m]

Span L [m]

Def

lect

ion

[m

m]

Span L [m]

9732-111

0 1.0 2.0 3.0 4.0 5.0

16

14

12

10

8

6

4

2

06.0

L/500

QM

0.5 kN/m

1

1.52

2.5

3

3.5

4

4.5

5

7.5

10

1520

3040

L

p [kN/m]

9732-112

0 1.0 2.0 3.0 4.0 5.0

16

14

12

10

8

6

4

2

06.0 7.0

L/500

Q

M

0.5 kN/m

1

1.5

2

2.5

3

3.5

4

4.5

5

7.5

10

15

2030

40

L

p [kN/m]

0 1.0 2.0 3.0 4.0 5.0

16

14

12

10

8

6

4

2

06.0 7.0

p [kN/m]

L

9732-113

L/500

QM

0.5 kN/m

1

1.5

2

2.5

3

3.5

4

4.5

5

7.5

10

15

2030

40

Warning!

➤ Always position Doka formwork beams "upright".

Correct "upright" positioning(load direction is parallel to

web plane).

Incorrect positioning "turned on side"

(load direction at right angles to web plane).

Wall formwork

Floor formwork

Warning!

➤ The uses illustrated below are prohibited, as are other, similar uses!

Do not use as scaffold flooring.

Do not use as traffic-route flooring.

9791

-206

-01

9791

-205

-01

9791

-219

-01

9791

-220

-01

9791

-200

-01

9791

-201

-01



Technical conditionThe following quality criteria define the extent of damage permissible in terms of load-bearing strength. Use is prohibited if damage is beyond these limits.

Flange

Angled cracks (across the grain)

● Not permissible.

Straight cracks (parallel to the flange)

● parallel to flange, permissible up to width a = 2 mm.

● If the flange can be parted at the crack the beam is not in usable condition.

Splintering at side

● permissible up to depth a = 10 mm and length b = 500 mm on one side.

Angled splintering across the edge

● permissible up to a = 30 mm across the diagonal and up length b = 500 mm.

9791-208-01

9791-213-01

a

9791-207-01

9791-210-02

a

b

9791-211-02

9791-214-01

a

b

9791-207-02



Saw cuts

● Superficial saw cuts up to depth a = 2 mm are permissible.

Flange end

● Splintering a up to length = 60 mm is permissi-ble.

● Damage to the plastic cap has no effect on load-bearing strength, but beams damaged evincing damage of this kind do not necessarily meet the quality criteria for Doka rental formwork

Drilled holes

● Not permissible, with the exception of system holes:

- Waling attachment with beam screw

- Attachment of table head with beam screw

a ... 15 mmb ... 112 mmc ... 396 mmDrilled-hole diameter max. 10 mm

9791-209-02

a

9791-209-01

9791-212-02

a

9791

-207

-09

9791-207-07

a

b b

9791-207-08a

c



Web

Damage to web

● permissible only if slight and at one side of the beam.

Damage to web end

● permissible up to max. a = 20 mm

Drilled holes in web

Permissible drilled holes:● Standard holes

- Each standard beam has 2 drilled holes, dia. 21.5 mm

● Additional system holes for:- Flange claw- Fastening plate- Connection splice plate- Table head 30- Lifting bracket- Portal head

One drilled hole of maximum diameter 20 mm per running metre in addition to the system holes is permissible.

If the incidence of drilled holes is frequent the over-all condition of the beam is definitive.

Detachment of flange from web

● Not permissible.

9791-216-01

9791-207-04

9791-217-01

a

9791-207-03

9791-215-01

9791-207-06



Transporting, stacking and storing

Transport

● Always use strap slings to lift stacked beams - do not use chains.

Beam stack, H20

● max. 2500 kg per stack

➤ Always sort beams for stacking, in other words do not stack beams N and P together in a mixed stack.

➤ Always use edge protectors when strapping beams together. Edge protectors can be padding made of plastic, wood or cardboard.

Ground conditions for stacking

● Maximum angle of inclination of ground 3%.● The ground on which the stack is to be placed

must be adequately firm and level. Best-case conditions are concreted or paved storage areas.

● Storage on asphalt:Depending on the parts stored, place wooden battens, strips of formwork sheeting or metal sheet between the parts and the asphalt surface to ensure that spread the weight is adequately spread.

● Storage on other surfaces (sand, gravel...):Adopt suitable measures for storage (e.g. place thick plywood sheets underneath the loads).

Reprocessing scrap materialDoka formwork beams contain no wood preserva-tives and, consequently, they can be deposited for reprocessing.Reprocessing by incineration in suitable incinera-tion plants is recommended. It is advisable not to attempt to burn scrap material in open fires or domestic woodburners.Always comply with the applicable local or national regulations.

☞ Cover stacked beams as protection against extremes of weather, for example direct sunlight or moisture. This will help prevent cracking and deformation caused by expo-sure to the weather.

☞ When moving beams not securely strapped together, make care that loose beams can-not slip.

Beam lengths

up to 5.90 m more than 5.90 m

Max. number of beams per stack 90 45Minimum number of wooden battens (min. 8 x 8 x 100 cm) 2 3

Size a 108 cm 108 cmSize b for beam H20 P 95 cm 49 cmSize b for beam H20 N 112 cm 57 cm

9791-218-02 9791-218-01

a

b

9791-202-01

9791-204-01

N

P

P

P N

NN

NN

P

P

N

N

Packs of up to 90 units Packs of up to 45 units.

Max. 2 packs stacked one on top of the other

Max. 4 packs stacked one on top of the other

9791-202-03 9791-203-03

Article n°[kg] Article n°[kg]

11999791002 - 06/2007 NK


The Formwork Experts

Doka System ComponentsFormwork beams

Doka beam H20 top N 1.80m 9.5 189011000Doka beam H20 top N 2.45m 12.8 189012000Doka beam H20 top N 2.65m 13.8 189013000Doka beam H20 top N 2.90m 15.0 189014000Doka beam H20 top N 3.30m 17.0 189015000Doka beam H20 top N 3.60m 18.5 189016000Doka beam H20 top N 3.90m 20.0 189017000Doka beam H20 top N 4.50m 23.0 189018000Doka beam H20 top N 4.90m 25.0 189019000Doka beam H20 top N 5.90m 30.0 189020000Doka beam H20 top N .....m 5.2 189010000Doka beam H20 top N .....m BS 5.2 189021000Doka-Träger H20 top N

Doka beam H20 top P 1.80m 9.9 189701000Doka beam H20 top P 2.45m 13.2 189702000Doka beam H20 top P 2.65m 14.3 189703000Doka beam H20 top P 2.90m 15.6 189704000Doka beam H20 top P 3.30m 17.7 189705000Doka beam H20 top P 3.60m 19.2 189706000Doka beam H20 top P 3.90m 20.8 189707000Doka beam H20 top P 4.50m 23.9 189708000Doka beam H20 top P 4.90m 26.0 189709000Doka beam H20 top P 5.90m 31.2 189710000Doka beam H20 top P .....m 5.4 189700000Doka beam H20 top P .....m BS 5.4 189711000Doka-Träger H20 top P

Doka beam H20 eco N 1.25m 6.3 189282000Doka beam H20 eco N 1.80m 9.0 189283000Doka beam H20 eco N 2.45m 12.3 189271000Doka beam H20 eco N 2.65m 13.3 189272000Doka beam H20 eco N 2.90m 14.5 189273000Doka beam H20 eco N 3.30m 16.5 189284000Doka beam H20 eco N 3.60m 18.0 189285000Doka beam H20 eco N 3.90m 19.5 189276000Doka beam H20 eco N 4.50m 22.5 189286000Doka beam H20 eco N 4.90m 24.5 189277000Doka beam H20 eco N 5.90m 29.5 189287000Doka beam H20 eco N 12.00m 60.3 189288000Doka beam H20 eco N .....m 5.0 189299000Doka beam H20 eco N .....m BS 5.0 189289000Doka-Träger H20 eco N

Doka beam H20 eco P 1.25m 6.5 189939000Doka beam H20 eco P 1.80m 9.4 189940000Doka beam H20 eco P 2.45m 12.7 189936000Doka beam H20 eco P 2.65m 13.8 189937000Doka beam H20 eco P 2.90m 15.1 189930000Doka beam H20 eco P 3.30m 17.2 189941000Doka beam H20 eco P 3.60m 18.7 189942000Doka beam H20 eco P 3.90m 20.3 189931000Doka beam H20 eco P 4.50m 23.4 189943000Doka beam H20 eco P 4.90m 25.5 189932000Doka beam H20 eco P 5.90m 30.7 189955000Doka beam H20 eco P 9.00m 46.8 189956000Doka beam H20 eco P .....m 5.2 189999000Doka beam H20 eco P .....m BS 5.2 189957000Doka-Träger H20 eco P

Doka formwork beam H16 N 2.45m 8.6 189802000Doka formwork beam H16 N 2.90m 10.2 189803000Doka formwork beam H16 N 3.60m 12.6 189809000Doka formwork beam H16 N 3.90m 13.7 189805000Doka formwork beam H16 N 4.90m 17.2 189813000Doka formwork beam H16 N 5.90m 20.7 189814000Doka-Schalungsträger H16 N

Doka formwork beam H16 P 2.45m 10.4 189961000Doka formwork beam H16 P .....m 4.3 189960000Doka-Schalungsträger H16 P

Doka formwork beam H24 N 4.90m 27.7 189601000Doka formwork beam H24 N 7.40m 41.8 189602000Doka-Schalungsträger H24 N

Doka formwork beam H30 N .....m 8.0 189099000Doka-Schalungsträger H30 N .....m

Doka formwork beam H36 N .....m 9.0 189199000Doka-Schalungsträger H36 N .....m

Timber varnish yellow 5l 5.0 176005000Holzlasur gelb 5l

Varnished yellowPermitted bending moment: 5.0 kNmPerm. shear force: 11.0 kNApproval by Institute of Building Technology, Berlin. Values applica-ble only when formwork beams are upright.









The Formwork Experts999791002 - 06/2007 NK

The Doka beam H20 top - a high-end product of engineering technology

Day in, day out, thousands of Doka solid-web formwork beams do sterling service on building sites the world over. An outstanding production level ensures uniformly high quality and load-bearing strength for safe and

dependable usage You can rent, lease or buy Doka formwork beams.

At any of the Doka branches in your region.Why not give us a call?

The Doka Group's central plant at Amstetten, Austria

Documents

999791002 GB Method statement Doka formwork beams · · 2018-03-06The FormworkExperts 06/2007 NK 999791002 GB User information Method statement Doka formwork beams