Doka Dokaflex S Operator's manual

-
© by Doka GmbH, A-3300 Amstetten
999797014 10/2018
en-US,US,CA
The Formwork Experts.
Dokaflex S
User Information
Instructions for assembly and use
© by Doka GmbH, A-3300 Amstetten
9
7
9
7-21
6
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0
1

2999797014 - 10/2018
User Information Dokaflex S
9797-226-01

User Information Dokaflex S
3999797014 - 10/2018
Contents
4Introduction
4Basic safety warnings
8System description
10 System logic for all floor-slabs up to 10" thick
11 Adaptability
12 Instructions for assembly and use
24 Structural design
26 Horizontal loads
28 Tie-back solutions
29 General remarks
29 Secondary-beam stabilizers
30 Combining Doka table systems
31 Tables around edges of slab
32 Safety railings
33 Doka service offerings
34 Shoring system, reshoring, concrete
technology and stripping
36 Formwork planning with Tipos-Doka
37 Transporting, stacking and storing
42 Product overview

4999797014 - 10/2018
Introduction User Information Dokaflex S
Introduction
Basic safety warnings
User target groups
▪ This booklet is aimed at all persons who will be work-
ing with the Doka product or system that it describes.
It contains information on the standard design for
setting up this system, and on correct, compliant uti-
lization of the system.
▪ All persons working with the product described
herein must be familiar with the contents of this
booklet 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 insure that the information mate-
rials provided by Doka (e.g. User Information book-
lets, Method Statements, Operating Instruction man-
uals, plans etc.) are up to date and available to all
users, and that users have been made aware of
them and have easy access to them at the usage
location.
▪ In the relevant technical documentation and form-
work utilization 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 insure compliance
with the national applicable laws, standards and
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 booklet serves as the basis for the site-specific
hazard assessment, and for the instructions given to
users on how to prepare and utilize the system. It
does not substitute for these, however.
Remarks on this booklet
▪ This document can also be used as a generally valid
set of Instructions for Assembly and Use (Method
Statement), or it can be incorporated into a site-spe-
cific set of Instructions for Assembly and Use
(Method Statement).
▪ The graphics in this document or app, and also
the animations and videos, depict states of par-
tial assembly in some instances and are there-
fore not always complete as regards their depic-
tion of safety equipment and measures.
Nevertheless, customer must ensure use in compli-
ance with the applicable regulations of safety equip-
ment possibly not shown in these graphics, anima-
tions and videos.
▪ The individual sections contain further safety
instructions and special warnings as applicable.
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.
Regulations; occupational health &
safety
▪ All laws, Standards, industrial safety regulations and
other safety rules applying to the application and uti-
lization of our products in the country and/or region
in which you are operating must be observed at all
times.
▪ If a person or object falls against, or into, the side-
guard component and/or any of its accessories, the
component affected may only continue in use after it
has been inspected and passed by an expert.

User Information Dokaflex S Introduction
5999797014 - 10/2018
Rules applying during all phases of
the assignment:
▪ The customer shall ensure that this product is
erected and dismantled, repositioned and generally
used for its intended purpose in accordance with the
applicable laws, standards and rules, under the
direction and supervision of suitably skilled persons.
These persons' mental and physical capacity shall
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 and load-bearing capacity of all compo-
nents and units must be ensured during all phases of
the construction work!
▪ Do not step on or apply strain to cantilevers, clo-
sures, etc. until suitable measures to ensure their
stability have been correctly implemented (e.g. by
tie-backs).
▪ The functional / technical instructions, safety warn-
ings and loading data shall all be strictly observed
and complied with. Non-compliance can cause acci-
dents and severe injury (risk of fatality) and serious
damage to property.
▪ Sources of fire in the vicinity of the formwork are pro-
hibited. Heaters are permissible only when used cor-
rectly and situated a correspondingly safe distance
from the formwork.
▪ Customer must give due consideration to any and all
effects of the weather on the equipment and regards
both its use and storage (e.g. slippery surfaces, risk
of slipping, effects of the wind, etc.) and implement
appropriate precautionary measures to secure the
equipment and surrounding areas and to protect
workers.
▪ All connections must be checked at regular intervals
to ensure that they are secure and in full working
order.
In particular threaded connections and wedged con-
nections have to be checked and retightened as nec-
essary in accordance with activity on the jobsite and
especially after out-of-the-ordinary occurrences (e.g.
after a storm).
▪ It is strictly prohibited to weld or heat Doka products,
particularly parts for anchoring, suspension or con-
necting, and also cast parts, etc.
Welding radically changes the micro-structure of the
materials of which these components are made. This
leads to a drastic reduction in failure load, constitut-
ing a serious safety risk.
It is permissible to cut individual tie rods to length
with metal cutting discs (introduction of heat at the
end of the rod only), but it is important to ensure that
flying sparks do not heat and thus damage other tie
rods.
Welding work can be done only on the articles
expressly mentioned in the Doka documents as
being suitable for work of this nature.
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 equipment/system must be assembled and
erected in accordance with the applicable laws,
Standards and rules by suitably skilled personnel of
the customer's, having regard to any and all required
safety inspections.
▪ 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.
Stripping the formwork
▪ Do not strip the formwork until the concrete has
reached sufficient strength and the person in charge
has given the order for the formwork to be stripped!
▪ When stripping 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 S bias-cut corners.
▪ When stripping 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!

6999797014 - 10/2018
Introduction User Information Dokaflex S
Transporting, stacking and storing
▪ Observe all country-specific regulations applying to
the handling of formwork and scaffolding. For system
formwork the Doka slinging means stated in this
booklet must be used – this is a mandatory require-
ment.
If the type of sling is not specified in this booklet, the
customer must use slinging means that are suitable
for the application envisaged and that comply with
the regulations.
▪ When lifting, always make sure that the unit to be
lifted and its individual parts can absorb the forces
that occur.
▪ Remove loose parts or secure them so that they can-
not slip out of position and drop.
▪ All components must be stored safely, following all
the special Doka instructions given in the relevant
sections of this document!
Maintenance
▪ Only original Doka components may be used as
spare parts. Repairs may only be carried out by the
manufacturer or authorized facilities.
Miscellaneous
The weights are averages on the basis of new material.
Actual weights can vary due to material tolerances.
Weights can also differ on account of dirtying, moisture
absorption, etc.
We reserve the right to make alterations in the interests
of technical progress.
Symbols
The following symbols are used in this document:
DANGER
This is a notifier drawing attention to an
extremely dangerous situation in which non-
compliance with this notifier will lead to death
or severe, irreversible injury.
WARNING
This is a notifier drawing attention to a dan-
gerous situation in which non-compliance
with this notifier can lead to death or severe,
irreversible injury.
CAUTION
This is a notifier drawing attention to a dan-
gerous situation in which non-compliance
with this notifier can lead to slight, reversible
injury.
NOTE
This is a notifier drawing attention to a situa-
tion in which non-compliance with this noti-
fier can lead to malfunctions or damage to
property.
Instruction
Indicates that actions have to be performed
by the user.
Visual inspection
Indicates that actions performed must be
checked by means of a visual inspection.
Tip
Draws attention to a useful tip for best-prac-
tice usage.
Reference
Cross-references other documents.

User Information Dokaflex S Introduction
7999797014 - 10/2018

8999797014 - 10/2018
System description User Information Dokaflex S
System description
Dokaflex S - the versatile hand-set
system for floor-slabs
Dokaflex S can easily be adapted to fit any layout, sim-
ply by telescoping the Doka H20 top beams.
▪ no structural-design work is needed, as Dokaflex S
shows you the maximum spacings for all slabs up to
18" 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 adapt to walls and columns
▪ for shoring-heights of up to 18’-0"
▪ any type of form-facing can be used
▪ no need to measure
Dokaflex S is ideal for enclosed spaces where the form-
work superstructure can be braced against walls on all
sides.
Horizontal forces at exposed slab-edges, downturned
beams or steps in ceiling slabs shall be transmitted by
bracing or tie-backs.
Small number of system components
- all perfectly co-ordinated
AStructural 1 plyform 3/4"
BDoka beam H20 top P
CLowering head H20
DSupporting head H20 DF
EDoka floor props Eurex 30 top
FRemovable folding tripod top
GBracing frame Eurex 4'-0" (1.22m)
HDiagonal cross 18.200
9797-200-01
A
F
HG
B
D
C
E

User Information Dokaflex S System description
9999797014 - 10/2018
(B) Doka beams H20 top P 16’-0" and 11’-6"
▪ easy-to-distinguish primary beams (16’-0") and sec-
ondary beams (11’-6")
▪ integrated shock absorbers at the beam ends for
less 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 minimizing
damage during stripping
▪ stabilizes the stringers so that these cannot tip over
on their sides
(D) Supporting head H20 DF
▪ easy to install on the floor prop
▪ for fixing intermediate props to the primary beam
(E) Doka floor props Eurex
EN 1065, ACI and CSA-compliant floor prop
Their high load-bearing capacity is complemented by
many practical details making them very easy to han-
dle:
▪ numbered pegging holes for easier height adjust-
ment
▪ elbowed fastening clamps, reducing the risk of injury
and making the props easier to operate
▪ special thread geometry makes the props easier to
back off even under high load
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 top
The removable folding tripod provides sufficient bracing
while the floor props, primary beams and secondary
beams are being set up in situations where the form-
work superstructure is braced by walls on all sides.
▪ Set-up aid for floor props
▪ swing-out legs offer flexibility for placement where
space is at a premium, for example close to walls
and in corners
Note:
Not suitable for sustaining horizontal loads during pour-
ing.
(G) Bracing frame Eurex 4'-0" (1.22m) + (H)
Diagonal cross 18.200
Bracing frames 4’-0" (1.22m) are joined with diagonal
crosses to make a bracing tower.
▪ diagonal crosses are easy to attach, with safety
catches
On exposed slab-edges, two bracing towers are used
to create a stable staging area:
▪ for setting up the formwork safely beside exposed
slab-edges
▪ for creating a stable placement area on which the
stacks of plyform sheets needed for formwork set-up
can safely be placed
Note:
Not suitable for sustaining horizontal loads during pour-
ing.
Follow the directions in the 'Timber formwork
beams' User Information booklet!
Type of Doka floor prop Permitted capacity to US stan-
dard
Eurex 20 6.0 kip (6000 lbs)
Eurex 30 8.5 kip (8500 lbs)
Follow the directions in the 'Doka floor props
Eurex' User Information booklet!
Follow the directions in the 'Floor prop exten-
sion 0.50m' User Information booklet!
9720-239-01
9720-238-01
9797-226-06

10 999797014 - 10/2018
System description User Information Dokaflex S
System logic for all floor-slabs up to 10" thick
Spacing and positions of the
component parts
No 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 do any measur-
ing.
a ... 4’-0"
b ... 8’-0"
a ... 19.2" joist spacing
b ... 20" stringer cantilever
c ... 20" joist cantilever
Stringers and joists
The 16’-0" long Doka beam H20 top P is used as a
stringer, and the 11’-6" long H20 top P beam as a
joist.
Format of the formwork sheets
Standard 4’-0" x 8’-0" format sheets have just the right
dimensions to fit exactly into the increment-grid of the
Dokaflex S system.
AMark
1 mark = 4’-0"
▪ max. spacing of props
2 marks = 8’-0"
▪ max. spacing of stringers
b
a
9797-201-01
A
AFloor prop Eurex + Lowering head H20 + Removable folding tri-
pod
BFloor prop Eurex + Supporting head H20 DF
CDoka beam H20 top P 11’-6" (joist)
DDoka beam H20 top P 16’-0" (stringer)
9797-202-01
A
aa b
c
8’-0”
8’-0”
4’-0”
B
C
D

User Information Dokaflex S System description
11999797014 - 10/2018
Adaptability
Fillers and adjustments
Infill 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 system
Dokaflex S also adapts to difficult layouts.
Adaptation along edge Adaptation around columns
AFormwork sheet
BFitting boards in the closure zone
NOTICE
The grain of the face layer (A) must run at right
angles to the supports (B) .
9797-210-01
9797-209-01
A
B
9797-208-01
B
A
9792-210-01
B
A
9797-211-01

12 999797014 - 10/2018
Instructions for assembly and use User Information Dokaflex S
Instructions for assembly and use
Setting up the formwork in enclosed
rooms
Setting up the floor props
➤System logic for all floor-slabs up to 10" thick: Lay
the primary beams and secondary beams down on
the ground, along the walls.
The marks on the beams show you the maximum
spacings:
- 2 marks for primary beams
- 3 marks for props with removable folding tripods
(final prop spacing after installation of the intermedi-
ate props - 1 mark)
➤If spacing is in accordance with the information in the
section headed 'Structural design': Measure out to
ensure correct positioning of the floor props.
➤Roughly adjust the height of the floor prop, using the
fastening clamp.
The 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)!
NOTICE
➤When setting up the floor prop, make sure
that the fastening clamp is pushed all the
way into the floor prop.
➤Turn the adjusting nut until it is in contact
with the fastening clamp.
NOTICE
It is essential to follow the instructions given
here and the instructions in the section headed
'Shoring system, reshoring, concrete technol-
ogy and stripping'.
NOTICE
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
existing parts of the structure (e.g. walls or
columns).
▪ If there is any risk of the formwork being
blown over, all free-standing, non-enclosed
areas of slab formwork shall be secured
during work-breaks and when work finishes
for the day.
98017-202-01
CAUTION
➤If you do transport the floor props with the
lowering heads still attached, secure the
heads with Spring-locked connecting pins
16 mm to prevent them dropping out. This is
particularly important when they are trans-
ported in the horizontal.
Clearance a between wedge and head-plate:
2 1/4"
9720-006
a
9720-006

User Information Dokaflex S Instructions for assembly and use
13999797014 - 10/2018
➤Set up each removable folding tripod.
➤Put the floor prop into the tripod and fix it in place with
the clamping lever.
Before anybody steps onto the formwork, check
again to make sure that the props have been cor-
rectly secured.
Setting up tripods in corners or 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.
Inserting the primary beams
The lowering heads can hold both single beams (on
edge-of-room props) and double beams (at overlaps).
➤Using beam-forks, place the primary beams into the
lowering heads.
➤Adjust the primary beams to the correct floor-slab
height.
NOTICE
➤Do not oil or grease wedge-clamped joints.
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.
9720-240-01
9720-241-01
9797-207-01
9720-335-01
WARNING
Loads that are applied non-centrally can cause
overloading of the system.
➤Ensure that all loads are applied centrally!
▪ Lumber can be attached to the floor props
as diagonal braces, using the Bracing
clamp B.
▪ Bracing frame Eurex 4’-0" (1.22m) can also
be used as a set-up aid.
9776-102-01
9720-003
9797-216-05

14 999797014 - 10/2018
Instructions for assembly and use User Information Dokaflex S
Placing the secondary beams
➤Use the beam forks to place the secondary beams in
position, with an overlap.
Maximum center-to-center spacing of secondary
beams: 19,2"
(if permissible - see the section headed ‘Structural
design’)
Installing 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.
➤Install the intermediate props.
Maximum spacing of the props: 1 mark
Place a beam (or double beam) wherever
there is to be a joint between the panels.
9720-005
9720-243-01
9797-216-04
NOTICE
➤Install the intermediate props so that they
force-fit. It is not allowed to make some
props higher than others!
ASupporting head H20 DF
BDoka beam H20
CHole in the supporting head
(for fixing with double-headed nails 6d)
9767-233-01
3
21
9768-215-01
A
B
C
9797-216-03

User Information Dokaflex S Instructions for assembly and use
15999797014 - 10/2018
Laying the plywood sheets
➤Lay the plywood sheets. (grain at right angles to the
secondary beams)
➤Install guard rails around all exposed edges.
➤Spray the plywood sheets with release agent.
To prevent the secondary beams tipping on
their sides while the sheets are being laid on
them, Secondary-beam stabilizers can be
used.
WARNING
➤Before anybody steps onto the surface of the
slab formwork, its stability must be ensured
(for example with Bracing frames Eurex,
bracing or tie-backs).
➤It is not permitted to set down loads on the
floor-slab formwork (e.g. beams, formwork
sheets, reinforcement steel) until after the
intermediate props have been set up and
adequate stability has been established!
➤Transfer of horizontal loads must be ensured
by other measures (e.g. by transferring
these loads into the structure or using tie-
backs or bracing). Follow the instructions in
the section headed 'Horizontal loads during
pouring'.
NOTICE
➤Use personal fall-arrest systems to protect
against fall hazards when working on unse-
cured slab-edges (e.g. Doka personal fall-
arrest set).
Where necessary (e.g. edge zones), secure
the form-ply with 6d nails.
98039-216-01
9720-004
9720-004
9797-216-02

16 999797014 - 10/2018
Instructions for assembly and use User Information Dokaflex S
Setting up the formwork in open
rooms
Pre-assembling cells
On exposed slab-edges, two bracing towers are used
to create a stable staging area:
▪ for setting up the formwork safely beside exposed
slab-edges
▪ for creating a stable placement area on which the
stacks of plywood sheets needed for formwork set-
up can safely be placed
➤Join the two frames with diagonal crosses at top and
bottom.
➤Slide the diagonal cross on to the latch-type pegs,
and immediately secure it with the safety catches.
➤Set up the second bracing tower in the same way, a
suitable distance from the first one.
Note:
The horizontal forces occurring during pouring have to
be transferred by bracing or tie-backs.
If this bracing is attached before the formwork sheets
are laid on the beams, only one staging area is needed
at the start of formwork set-up.
NOTICE
It is essential to follow the instructions given
here and the instructions in the section headed
'Shoring system, reshoring, concrete technol-
ogy and stripping'.
NOTICE
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
existing parts of the structure (e.g. walls or
columns).
▪ If there is any risk of the formwork being
blown over, all free-standing, non-enclosed
areas of slab formwork shall be secured
during work-breaks and when work finishes
for the day.
NOTICE
➤Always set up the bracing frames such that
the end with the two safety catches (D) and
(E) is at the bottom.
ABracing frame Eurex 4'-0" (1.22m)
BDiagonal cross
CSafety catch 1
TR1012-200-02
A
B
C
D
E
DSafety catch 2
ESafety catch 3
Max. area of formwork per staging area: 1000 ft
2
9797-226-07
9797-226-06
9797-226-05

User Information Dokaflex S Instructions for assembly and use
17999797014 - 10/2018
Setting up the floor props
➤Roughly adjust the height of the floor prop, using the
fastening clamp.
The 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)!
➤Secure the floor prop to the bracing frame with the
quick-fixing mechanism.
Before anybody steps onto the formwork, check
again to make sure that the props have been cor-
rectly secured.
➤Secure floor props with a Supporting head H20 DF to
the inside quick-fixing mechanisms (see the section
headed 'Installing the intermediate props').
Do not adjust the inside props to the right height until
the primary beams have been laid in place.
This staging area can withstand vertical and horizontal
loads corresponding to the loads imposed by two per-
sons and one stack of formwork sheets.
➤Position the removable folding tripod outside the
staging area.
➤Put the floor prop into the tripod and fix it in place with
the clamping lever.
Before anybody steps onto the formwork, check
again to make sure that the props have been cor-
rectly secured.
Setting up tripods in corners or 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.
CAUTION
➤If you do transport the floor props with the
lowering heads still attached, secure the
heads with Spring-locked connecting pins
16 mm to prevent them dropping out. This is
particularly important when they are trans-
ported in the horizontal.
Clearance a between wedge and head-plate:
2 1/4"
NOTICE
➤Do not oil or grease wedge-clamped joints.
ABracing frame Eurex 4'-0" (1.22m)
9720-006
a
9720-006
TR1012-201-03
CA
B
BProp holder with quick-fixing mechanism
CDoka floor prop Eurex
9797-229-03
9720-240-01
9720-241-01
9797-229-02

18 999797014 - 10/2018
Instructions for assembly and use User Information Dokaflex S
Inserting the primary beams
The lowering heads can hold both single beams (on
edge-of-room props) and double beams (at overlaps).
➤Using beam-forks, place the primary beams into the
lowering heads.
➤Adjust the primary beams to the correct floor-slab
height.
➤Adjust the inside props on the bracing frames to the
right height.
WARNING
Loads that are applied non-centrally can cause
overloading of the system.
➤Ensure that all loads are applied centrally!
9776-102-01
9720-003
9
7
9
7-22
9
-
0
1
▪ Lumber can be attached to the floor props
as diagonal braces, using the Bracing
clamp B.
▪ Bracing frame Eurex 4’-0" (1.22m) can also
be used as a set-up aid.
9797-226-04

User Information Dokaflex S Instructions for assembly and use
19999797014 - 10/2018
Placing the secondary beams
➤Use the beam forks to place the secondary beams in
position, with an overlap.
Maximum center-to-center spacing of secondary
beams: 19,2"
(if permissible - see the section headed ‘Structural
design’)
Installing 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.
➤Install the intermediate props.
Maximum spacing of the props: 1 mark
Place a beam (or double beam) wherever
there is to be a joint between the panels.
9720-005
9720-243-01
9797-226-03
NOTICE
➤Install the intermediate props so that they
force-fit. It is not allowed to make some
props higher than others!
ASupporting head H20 DF
BDoka beam H20
CHole in the supporting head
(for fixing with double-headed nails 6d)
9767-233-01
3
21
9768-215-01
A
B
C
9797-226-08

20 999797014 - 10/2018
Instructions for assembly and use User Information Dokaflex S
Installing the bracing
Horizontal forces at exposed slab-edges, downturned
beams or steps in ceiling slabs must be restrained by
bracing or tie-backs.
➤Fix rough-cut 1"x4" or 2"x4" lumber to the floor props
using Bracing clamps B.
The lumber must be arranged at a 30° angle to the
previously cast slab. The top end of the plank must
be pointing towards the edge of the floor-slab.
Laying the plywood sheets ➤Lay the plywood sheets. (grain at right angles to the
secondary beams)
➤Install guard rails around all exposed edges.
➤Spray the plywood sheets with release agent.
To prevent the secondary beams tipping on
their sides while the sheets are being laid on
them, Secondary-beam stabilizers can be
used.
WARNING
➤Before anybody steps onto the surface of the
slab formwork, its stability must be ensured
(for example with Bracing frames Eurex,
bracing or tie-backs).
➤It is not permitted to set down loads on the
floor-slab formwork (e.g. beams, formwork
sheets, reinforcement steel) until after the
intermediate props have been set up and
adequate stability has been established!
➤Transfer of horizontal loads must be ensured
by other measures (e.g. by transferring
these loads into the structure or using tie-
backs or bracing). Follow the instructions in
the section headed 'Horizontal loads during
pouring'.
98039-216-01
9720-004
9720-004
NOTICE
➤Use personal fall-arrest systems to protect
against fall hazards when working on unse-
cured slab-edges (e.g. Doka personal fall-
arrest set).
Where necessary (e.g. edge zones), secure
the form-ply with 6d nails.