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ACCESSORIES FOR FORMWORK CONSTRUCTION
5
TIE BARS AND ACCESSORIES
for formwork construction
ROBUSTA-GAUKEL
GMBH
&CO.KG
5
ACCESSORIES FOR FORMWORK CONSTRUCTION
TIE BARS AND ACCESSORIES
INDEX
Tie bars and accessories . . . . . . . . . . . . . . 3 + 4
Accessories
– Hexagonal and flange nuts . . . . . . . . . . . . . . . . 5
– Wing nuts, counter plates and
free wheel wrench . . . . . . . . . . . . . . . . . . . 6 + 7
Anchors before concreting
– Plate anchor, fix anchor and
shuttering sleeve . . . . . . . . . . . . . . . . . . . . . 8 + 9
Anchors subsequent concreting
– Impact dowel and srew-on-set . . . . . . . . . 10 + 11
– Concrete and rock anchor . . . . . . . . . . . . . . . . 12
Accessories for A-frames at
one-sided formwork
– V-holder and anchor-holder L . . . . . . . . . . . . . . 13
– Anchor nuts, wobble anchor, hook anchor
and loop anchor . . . . . . . . . . . . . . . . . . . .14 + 15
Waterproof tightenings
– Waterstops: system 1 . . . . . . . . . . . . . . . 16 + 17
– Waterstops: system 2 . . . . . . . . . . . . . . . 18 + 19
2
Tie bars and accessories for formwork construction
ACCESSORIES FOR FORMWORK CONSTRUCTION
TIE BARS
5
General information:
● to
●
●
●
●
●
connect and anchor formwork constructions
for in-situ-concrete and prefab element construction
5 different diameters of anchors from Ø 15.0 mm to Ø 36.0 mm
tie rods available in hot-rolled and cold-rolled version
permissible loads from 85 kN to 549 kN
extensive accessories of wing nuts, hexagonal nuts and bolts
Hot-rolled thread
Ø 15.0
Ø 20.0
Ø 26.5
Ø 32.0
Ø 36.0
In concrete and formwork construction
the formwork anchors have proved
themselves because of the practical
robust DYWIDAG-coarse thread.
For the use on site the hot-rolled tie bars
with the so called ”self cleaning”
thread are preferred. When turning the
nut on the tie bar sticking rests of
concrete are removed and can trickle off
through the free space, which results
from the flattening at the tie rod on
both sides.
Please note that the hot-rolled tie rods may not be heated, bent or stressed with shear loads!
TECHNICAL DATA:
Threaded tie rod D&W, hot rolled, not weldable*
D&W
Ø [mm]**
Version
Weight
[kg/m]
15.0
15.0
20.0
26.5
32.0
36.0
raw material
galvanized
raw material
raw material
raw material
raw material
1.40
1.40
2.53
4.50
6.53
8.30
Item No.
511500
511700
512000
512600
513200
513600
* exception: tie rods with longitudinal groove
between the thread (see photo)
**Ø 12,5 mm available on request
*** bigger lengths up to 15,0 m are available on request.
Bearing load table
Core-Ø
[mm]
External-Ø
[mm]
Pitch
[mm]
Adm. load
[kN]
Load at the yield point
[kN]
Breaking load
[kN]
15.0
20.0
26.5
32.0
36.0
17.0
22.0
30.0
37.0
41.5
10
10
13
17
18
91
162
300
434
549
159
283
525
760
960
195
345
580
850
1070
Products subject to technical changes
3
5
ACCESSORIES FOR FORMWORK CONSTRUCTION
TIE BARS
Cold rolled thread
Ø 15,0
Ø 20,0
Ø 26,5
As an alternative the tie rods with cold rolled thread can be used. These can be
distinguished from the hot rolled tie rod easily by the revolving thread profile.
This type of tie rod is less critical when using. This material is weldable under
certain conditions, also shearing loads and bending stress are possible. Because of
these mentioned reasons this type is used preferred in prefab element plants and
steel formwork manufacturers.
Delivery:
We keep all diameters on stock in lengths of at least 6.0 m.
The special advantage for you:
When ordering shortened tie bars the cutting edges will get a
strong chamfering in a second working step.
By this the nuts can be turned more easy and the tie rods will not
bulge that much, when striking with a hammer on to the ends.
TECHNICAL DATA:
Threaded tie rod D&W, cold rolled, weldable and
bendable under certain conditions
D&W
Ø [mm]
Version*
Weight
[kg/m]
15.0
20.0
26.5
raw material
raw material
raw material
1,50
2,60
4,60
Item No.
511600
512100
512700
* Ø 15 mm available in fine steel on request
Bearing load table
Core-Ø
[mm]
External-Ø
[mm]
Pitch
[mm]
Adm. load
[kN]
Load at the yield point
[kN]
Breaking load
[kN]
15.0
20.0
26.5
17.0
22.0
30.0
10
10
13
85
140
240
149
245
419
170
275
500
Turning wrench
On sites normally stuck tie rods will be detached by striking
on to the end of the bar by hammer. By this the ends will
thicken, the setting and turning of nuts will be complicated
or not possible at all. For a gentle removing or when the
tie rods have to be turned without nut we do recommend
our turning wrench.
big lever with eccentric clamping
for inserting on to the
narrow side of the hot rolled
tie rod
TECHNICAL DATA:
Turning wrench
Discription
for hot rolled D&W-tie rods Ø 15 mm
and cold rolled tie rods Ø 20 mm
only for hot rolled D&W-tie rods
Ø 15 mm
4
Weight
[kg/pce.]
Item No.
0,90
511568
0,90
511567
Tie bars and accessories for formwork construction
5
ACCESSORIES FOR FORMWORK CONSTRUCTION
TIE BARS – ACCESSORIES
Hexagonal nuts
Ø
Ø 15.0
Ø 20.0
Ø 26.5
These are suitable for welding and
are used preferred for steel formwork construction.
Weldable flange nut
Flange nut
Ø
Ø 15.0
For the transmission of the full load
of the tie rod the continuous length
of the welding seam is not sufficient!
Therefore in this case the
weldable flange nut with a
bigger contour has to be used.
Because of the contour length the necessary welding seam for
an anchoring load of 90 kN is guaranteed.
When planning it has to be considered, that the connected
steel element can withstand the load.
Statical indication available on request.
Ø
Ø 15.0
Inexpensive nut with flange made of
tempered cast for minor loads, for
example usable for the production of
connecting bolts
Ø
Coupler
For connection and extension of tie
rods we are offering nuts with center
pin in diameters from 15.0 to 26.5 mm.
Therefore it is guaranteed that both
ends of the tie rods will be screwed in
with the correct and identical
measurement without rechecking at
the back stop.
At the big tie rod diameters 32.0 and
36.0 mm and the according heavy loads
the installation of a center pin is not
possible because of the notch effect.
Here the correct screwing depth has to
be controlled on both sides with
markings at the tie rods.
Ø 15.0
Ø 20.0
Ø 26.5
Ø
Ø 32.0
Ø 36.0
TECHNICAL DATA:
Hexagonal nuts,
steel, weldable, raw material
D&W
Ø [mm]
SW
[mm]
Length
[mm]
Weight
[kg/pce.]
15.0
15.0
15.0
20.0
26.5
30
30
30
36
46
30
50
70
60
60
0.13
0.21
0.30
0.40
0.54
Item No.
511565
511552
511554
512050
512650
Hexagonal flange nut, tempered cast, raw material
D&W
Ø [mm]
SW
[mm]
Length
[mm]
Weight
[kg/Stck.]
15.0
30
20
0.13
Item No.
511564
Weldable flange nut, forged, raw material
D&W
Ø [mm]
Weight
[kg/pce.]
15.0
0.39
Couplers,
Item No.
511558
steel, weldable, raw material
D&W
Ø [mm]
SW or
Ø [mm]
Length Weight
[mm]
[kg/pce.]
15.0
20.0
26.5
32.0
36.0
SW 30
SW 36
SW 46
Ø 62
Ø 67
103
110
150
180
220
0.46
1.00
1.36
3.00
4.20
Item No.
511556
512051
512652
513251
513651
Products subject to technical changes
5
5
ACCESSORIES FOR FORMWORK CONSTRUCTION
TIE BARS – ACCESSORIES FOR FIXING
Wing nuts and
counter plates
Ø 15.0
1
Ø 15.0
2
3
4
9
For the bracing of wall formworks on
building sites wing nuts have approved
themselves. They can easily be
tightened and loosened by hammer
strikings.
These nuts are available in two versions:
made of tempered
without flange
wing nuts without flange, tempered cast
wing nuts with flange, tempered cast
cast, with or
5
Alternatively we offer wing nuts which
are forged of steel, generally with
flange.
For these the purchase price is more
expensive then for the tempered cast
nuts, but because of the better quality
of material they are more stable and
resistant.
The counter plates are a completion to
the wing nuts without flange, to reduce
surface pressure and the friction
between nut and base support.
For panel formwork with steel profiles
and girder wall formwork with U-flange
the square plate 120 x 120 x 10 and
the rectangle plate 100 x140 mm
are suitable. For placing on square
timbers we recommend the plate
200 x 150 mm with a bigger bearing
area.
Wing nuts and counter plates for
tie rod diameter Ø 20.0 mm (hole
diameter Ø 30.0 mm).
This plate is also available for the tie rod
diameter Ø 26,0 mm (hole diameter
Ø 32.0 mm).
At this tie rod diameter hexagonal nuts
are used instead of wing nuts.
6
Ø 15.0
8
7
wing nuts with flange, forged
Ø 15,0
20
21
22
Ø 20,0
10
12
11
23 24
Accessory: free wheel wrench
The deformation of the wing nuts is quite high because of working
with a hammer. To avoid this we want to mention our ratchet
spanner: by using this wrench with a long lever arm the energy
consumption is less, the annoyance of noise, danger of
damage and injury will clearly be reduced.
Also a higher and accurate tension can be applied to the tie rod.
6
Tie bars and accessories for formwork construction
ACCESSORIES FOR FORMWORK CONSTRUCTION
TIE BARS – ACCESSORIES FOR FIXING
5
TECHNICAL DATA:
Wing nuts SW 27,
Type D&W
Ø [mm]
1
2
3
4
9
10
11
15.0
15.0
15.0
15.0
15.0
20.0
20.0
Wing nuts,
6
7
8
12
Version
SW
[mm]
Length
[mm]
Weight
[kg/pce.]
2-armed without flange
2-armed without flange
3-armed with flange Ø 100 mm
3-armed with flange Ø 70 mm
combination wing nut, spherical supported counter plate 120 x 120 mm
2-armed without flange
3-armed with flange Ø 130 mm
27
27
27
27
27
36
36
65
60
55
60
65
60
65
0.30
0.33
0.78
0.46
1.15
0.48
1.30
Version
SW
[mm]
Length
[mm]
Weight
[kg/pce.]
4-armed with clamp handle and flange Ø 60 mm
3-armed with flange Ø 65 mm
2-armed with flange Ø 70 mm
3-armed with flange Ø 60 mm
2-armed without flange
27
27
27
27
36
50
50
45
60
56
1.15
0.58
0.45
0.48
0.43
15.0
15.0
15.0
15.0
20.0
Counter plates,
Typ
20
21
22
23
24
Item No.
511559
511551
511563
511560
511576
512060
512061
forged steel, galvanized
Type D&W
Ø [mm]
5
tempered cast, galvanizied
Item No.
511561
511577
511557
511547
511053
galvanized
D&W
Ø [mm]
Version
Dimensions Hole-Ø
[mm]
[mm]
Weight
[kg/pce.]
15.0
15.0
15.0
20.0
26.5
counter plate for wooden flanges, steel sheets, stiftening corrugation
counter plate for steel flanges, steel sheets, stiftening corrugation
counter plate for steel flanges, steel, forged
counter plate, even
counter plate, even
200 x 150 x 8
120 x 120 x 10
140 x 100 x 6
150 x 150 x 15
150 x 150 x 15
2.30
1.00
0.75
2.25
2.55
17
17
17
30
32
Item No.
511571
511569
511570
512054
512653
Free wheel wrench with universal insert for
2- and 3-armed wing nuts
Weight
[kg/pce.]
1.90
Item No.
511575
Products subject to technical changes
7
5
ACCESSORIES FOR FORMWORK CONSTRUCTION
ACCESSORIES FOR ANCHORING
For anchoring of loads at small thickness of construction elements we are offering several possibilities of non recoverable
installation parts made of steel and plastic.
The load is depending on the concrete strength, the installation depth and the existing reinforcement.
Test reports are available on request.
1 Plate anchor
1
consisting of anchor bar with big anchoring plate and pressed
nut.
For fixing to the formwork a metal cone is necessary
(see page 17).
2a
Fix anchor
made of cast steel
with mounting part and 3 legs
2a
completely consisting of:
2
A
B
C
A
C
cast anchor
plastic base
plastic plug
3 refined steel nails
C
B
The plastic base is non-recoverable, the nails sticking out of
the concrete surface are cut off with tongs.
2b
Fix anchor
with tube made of fibrous concrete
2b
completely consisting of:
– cast anchor glued into the tube
– concrete cone as plug
Advantages:
– higher bearing loads because of deeper installation
– no more steel- or plastic parts at the concrete surface,
especially important at the bottom side of bridges
Shuttering sleeve made of glass fibre
and strengthened plastic
complete with nailing flange and plastic plug.
8
Tie bars and accessories for formwork construction
ACCESSORIES FOR FORMWORK CONSTRUCTION
ACCESSORIES FOR ANCHORING
5
TECHNICAL DATA:
Plate anchor for anchor bars Ø 15 mm
Length
[mm]
Weight
[kg/pce.]
100
1.28
Item No.
511593
other lengths ”L” on request.
Fix anchor
Weight
[kg/pce.]
Item No.
0.49
511578
Fix anchor complete as installation kit
Description
Depth of
intall. [mm]
with plastic base
3 nails and plugs
90
with tube and plug
made of fibrous concrete 120
Weight
[kg/pce.]
Item No.
0.51
511579
0.67
511580
Shuttering sleeve with nailing flange and plug
Depth of installation
[mm]
83
Weight
[kg/100 sets]
6.20
Item No.
511592
Products subject to technical changes
9
5
ACCESSORIES FOR FORMWORK CONSTRUCTION
TIE BARS – ACCESSORIES FOR FIXING
Impact dowel Ø 15 mm
This special impact dowel with a Dywidag-internal thread is used by foremen over
and over again with enthusiasm.
For subsequent anchoring on sites with low loads there is nothing better available,
because the according tie bars with a practical coarse thread are used on every site.
With the tie bars in suitable length any clamping widths for all kinds of use can be
realized.
Bearing load table
recommended admissible load for
short time anchoring during construction
Concrete strength
15
25
35
N/mm2 N/mm2 N/mm2
min. 300
edge distance
0 0 n ce
. 3 ta
in dis
m e
g
ed
Load direction
Axial tension 0°
Diagonal pull 45°
Shearing 90°
min. 200
17.0
21.5
27.5
21.9
27.8
35.5
26.0
32.8
42.0
Ø 22
min. 85
0°
45°
90°
For safety reasons we state the
admissible loads for a low concrete
strength of 15 N/mm2.
That means in practice that the anchors
are often installed the next day after
concreting and are already loaded.
These data are based on extensive tests
of the offical laboratory “bautest” in
Augsburg.
Additionally the admissible loads for
concrete strength 25 and 35 N/mm2 are
stated for using the dowels in hardened
concrete.
TECHNICAL DATA:
Impact dowel D&W 15,
Hard metal drill
galvanized
Weight
[kg/100 units]
16.5
10
Item No.
121515
Weight
[kg/100 units]
40,0
Punching pin, galvanized
Item No.
121517
Weight
[kg/100 units]
Item No.
45,0
Tie bars and accessories for formwork construction
121516
ACCESSORIES FOR FORMWORK CONSTRUCTION
TIE BARS – ACCESSORIES FOR FIXING
Screw-on-set
5
TECHNICAL DATA:
Wide range applicable bolt with
nut, which allows independence in
multiple ways:
User defined clamping thickness,
regardless of clamping a steel plate with
5 mm or 5 cm thickness.
User defined screwing depth,
regardless of screwing the bolt into the
dowel 35 mm or into the threaded
sleeve 100 mm.
User defined hole diameter between
17 and 30 mm, the tightening of the
conical shaped nut guarantees
automatic centering without any
tolerance in the middle of the hole.
A shifting is not possible.
Tightening without any special tool
(fork wrench), hammer will be enough!
No additional costs for adapter
sleeves or washers.
Screw-on-set Ø 15 mm, galvanized
Length*
[mm]
Weight
[kg/pce.]
180
300
0.46
0.78
Item No.
111818
111830
*other lengths are available on request.
Easy mounting of the screw-on-set:
1
2
1. Place clamping part over the
anchoring point.
3
2. Screw bolt into the
anchoring ground.
4
3. Tighten hexagonal nut by
hand, in this way the nut
will center the clamping
part without tolerances.
4. Final tightening of the
screw by simply turning it
with e.g. German style
roofing hammer.
Products subject to technical changes
11
5
ACCESSORIES FOR FORMWORK CONSTRUCTION
ACCESSORIES FOR FIXING
Concrete anchor – rock anchor
Concrete anchor with three-part expanding
sleeve and fine toothing
min. 400
edge distance
With the help of these dowels it is possible to anchor the tie
rods subsequently with up to 100% of the admissible load
of 90 kN. The premises for that are that the concrete strength
and the measurements of the concrete element are sufficient.
Frequent use for example during concreting of single headed
walls against existing buildings.
Because of the traction force in the tie rod the conical thread
piece is pulled into the expanding sleeve and is so spreading
the dowel inside the bore hole.
As the stability of the anchorage often cannot be stated
exactly, we recommend to install the dowel using a hollow
plunger.
So the dowel can be spread with strong force inside the bore
hole, also the bearing load can be proved free from doubt.
Test reports on request.
00 ce
. 4 tan
in
m dis
ge
ed
min. 350
Ø 35
Ø 36
min. 250
Appro
v
Z-21.6 al No.
-1778
For fixing scaffoldings in Germany it is necessary to use
anchors with an official approval. With the anchor type
”AHS” we offer the optimum solution for the subsequent
fixing of scaffoldings and consoles. Especially in bridge
construction and renovation works it is very easy to prove the
anchoring of the cantilever girders without any problem.
Approval and data sheet on request.
Rock anchor with two-part expanding sleeve, connected with spring
clip, which covers the thread hole from loose stones.
TECHNICAL DATA:
Concrete anchor with official approval
D&W
[mm]
L
[mm]
15.0
100
F adm.
[kN]
90
Weight
[kg/pce.]
Item No.
0.45
121526
Rock anchor
D&W
[mm]
L
[mm]
15.0
110
F adm.
[kN]
90
Weight
[kg/pce.]
Item No.
0,31
121522
Hollow plunger
Description
Weight
[kg/pce.]
Item No.
to spread and test the anchors
12
Tie bars and accessories for formwork construction
ACCESSORIES FOR FORMWORK CONSTRUCTION
ANCHORING FOR A-FRAMES
V-holder and anchor-holder L with finishing cone
V-holder
As an accessory for exact installation and for a safe fixing during concreting for the base
plate the V-holder and the anchor-holder L with finishing cone is an optimized
solution.
Both holders will be layed onto the upper layer of the reinforcement and racked.
The plastic sleeve will be inserted into the steel holders according to the anchoring
diameter. By clamping (Ø 15 mm) or screwing (Ø 20 and 26.5 mm) the anchoring
depth can be adjusted excatly inside the sleeve.
The anchor-holder L in connection with the finishing cone offers the possibility to plane
the concrete surface without faults. It will be installed flush to the surface and will spare
the necessary space for the installation of the coupler. By this it can be planed around
the anchor points without standing out parts. Markings will mark the installation point.
1 installation
anchor-holder L with finishing cone
3 removing
2 concreting and
cone
planing
4 couple anchor bar
5
5 fill with mortar
TECHNICAL DATA:
V-holder
D&W
Ø [mm]
Weight
[kg/pce.]
15
20
26.5
0.45
0.45
0.45
Item No.
511591
512056
512657
Anchor-holder L
D&W
Ø [mm]
Weight
[kg/pce.]
15
20
26.5
0.52
0.52
0.52
Item No.
511541
512041
512641
Finishing cone
D&W
Ø [mm]
Colour
Weight
[kg/pce.]
15
20
26.5
red
yellow
white
0.08
0.08
0.08
Item No.
511542
512042
512642
Products subject to technical changes
13
5
ACCESSORIES FOR FORMWORK CONSTRUCTION
ANCHORING FOR A-FRAMES
When choosing the type of anchoring you have to attend several criterions:
1) definition of the diameter of the anchor bar regarding the existing traction load
2) definition of the anchor type according to the space possibilities in the foundation or in the base plate.
Anchor nut
At straight tie rods the anchor nut is used. The anchoring of the traction loads results in the big plate,
which is screwed on to the lower end of the tie rod.
This anchor type can be cut out of the normal tie bars to the according length. The length depends on the
traction load, the diameter of the tie rod and the actual strength of the concrete.
In praxis the following empirical values have been approved:
Ø 15.0 mm length of tie rod 500 mm
Ø 20.0 mm
700 mm
Ø 26.5 mm
1000 mm
The subsequent installation through the upper reinforcement layer is possible without problem. A further advantage which can
only be used with this system is the possibility to recover the tie rod after using. For that you only have to install a plastic tube
between anchoring nut and the installation help (V-holder and anchor-holder L see page 13).
Wobble anchor
The anchoring in the concrete results in the profiling of the corrugated tie bar.
An additional anchor plate or anchor nut is not necessary. The subsequent installation through the upper reinforcement layer is possible without problem.
Hook anchor
The anchoring in the concrete results in the profiling of the bent anchoring bar.
An additional anchor plate or anchor nut is not necessary. Only with the short version of the hook anchor Ø 15.0 mm for thin base plates we recommend the addition of a transverse bar into the bent loop on the part of the builder.
The subsequent installation through the upper reinforcement layer is possible by
mounting of the hook.
Loop anchor
It is optimum usable, if the thickness of the base plate is in the correct relation to the
length of the inclined ends of the tie rods: the installation is done by placing on and racking of the bent loop on the lower
reinforcement layer. In one working step 2 anchoring bars are installed without further accessories.
Attention:
The installation has to be done before the placing of the upper reinforcement layer.
If the ends of the tie rods are standing out long enough out of the surface, the extension tie rods can be connected directly with the coupling nuts.
The standing out tie rods have to be cut flush after removing the A-frames.
This method should only be used, if later an additional screed will cover the cut ends.
If the ends of the tie rods are sunk in at thicker concrete slabs the steel cones have to
be added as recoverable couplers. After removing the cones the remaining openings can
be filled up with mortar. Therefore no danger of rusting.
14
Tie bars and accessories for formwork construction
ACCESSORIES FOR FORMWORK CONSTRUCTION
ANCHORING FOR A-FRAMES
5
TECHNICAL DATA:
Anchor nut
D&W
for D&W-tie rods
D&W
Ø [mm]
D1
[mm]
D2
[mm]
H
[mm]
F adm.
[kN]
Weight
[kg/pce.]
15.0
20.0
26.5
80
100
120
26
32
40
70
80
80
90
160
300
0.48
0.82
1.34
Wobble anchor,
Item No.
511573
512055
512654
raw material
D&W
Ø [mm]
L
[mm]
F adm.
[kN]
Weight
[kg/pce.]
15.0
20.0
26.5
550
700
800
90
150
250
0.79
1.82
3.70
Item No.
511547
512059
512660
Hook anchor, raw material
D&W
Ø [mm]
A
[mm]
L1
[mm]
L2
[mm]
F adm.
[kN]
Weight
[kg/pce.]
15.0
15.0
20.0
26.5
100
100
150
200
250
450
600
800
150
150
175
200
85
85
150
250
0.68
1.00
2.20
5.00
Item No.
511595
511596
512058
512658
Loop anchor, raw material
D&W
Ø [mm]
A
[mm]
B
[mm]
C
[mm]
R
[mm]
F adm.
[kN]
Weight
[kg/pce.]
15.0
20.0
26.5
250
300
400
300
300
300
250
350
450
50
75
100
2 x 85
2 x 150
2 x 240
1.85
3.80
9.50
Item No.
511594
512057
512659
Products subject to technical changes
15
5
ACCESSORIES FOR FORMWORK CONSTRUCTION
WATERPROOF TIGHTENINGS
Water stop tightenings
The demand for waterproof walls always means an extra effort and needs special care when installing and removing of
the formwork anchors with water stops to tighten doubleside formwork elements.
In general you have to attend several important points when producing sensible waterproof construction
elements:
– Careful procedure with the vibrator during concreting. Because of the energy of vibration when immersing again into
nearly stiffened concrete fine microflaws can occur around the water stop. A direct contact of the vibrator with the
tie rod has to be avoided.
– While the concrete is hardening in the formwork, shocks onto the shuttering or scaffolding are the reason for subsequent leakage , because those shocks are transmitted to the formwork anchors.
– Please attend to longer terms of striking , because the wingnuts are often removed with hammer strikes.
Therefore we want to refer to our free wheel wrench for wing nuts (see page 6).
Besides when striking the first side of the encased wall the tension load onto the embedded tie bar in the middle of
the wall is only effective in one direction to the still encased side of the wall. A sufficient concrete strength is
necessary to exclude movements and microflaws.
In principle 2 classical systems are available:
Water stops: system 1
1.) non recoverable tie bar with welded
intermediate sheet, available for tie rods
Ø 15.0 / 20.0 and 26.5 mm
This method has the advantage, that after finishing the works
no hollow space will remain in the concrete, in which the
water can be collected.
The tie bar will be concreted without a wrapping plastic tube
in the middle of the wall as a non recoverable part.
To prevent the additional water circulation a square sheet
120 x 120 mm is welded centered onto the tie rod. The non
recoverable tie rod will be completed with steel cones as couplers on both sides and extended with the usual tie anchors.
After sufficient hardening of the concrete after striking of the
formwork the cones will be
removed with the help of free
wheel wrenches with hexagonal
nut.
Important: The use of the plastic
conical sleeve will ease the
removing!
d=w
D&W
15,0
20,0
26,5
all th
ickne
ss
L K [mm]
102
132
153
length
of tie
bar
Afterwards a conical cutout will remain, in which the non recoverable centered tie rod is placed with a concrete covering of
min. 5 cm. This cutout will be filled with a non-shrinking mortar.
Please clarify before ordering of this type, whether the width of meshes of the reinforcement is wide enough to push through
the square sheet 120 x 120 mm subsequently.
ROBUSTA-steel cone ”RSK“
The special solution for waterproof walls with demand of
exposed concrete quality:
The ROBUSTA-steel cone ”RSK” with the special cone core
with large area of contact prevents impressions in the
wooden shuttering.
The dimesions of the cone are made in that way, that the
standard ROBUSTA refined concrete cone can be glued into
the remaining conical cavity.
16
Tie bars and accessories for formwork construction
ACCESSORIES FOR FORMWORK CONSTRUCTION
WATERPROOF TIGHTENINGS
5
TECHNICAL DATA:
Water stops
with centered core welded cam sheet 120 x 120 mm
D&W
Ø [mm]
Weight
[kg/pce.]
15.0
20.0
26.5
various
various
various
Item No.
511587
512085
512682
length of bars and weight depending on wall thickness.
Steel cones, galvanized, with centered core and hexagon head, cone turnable
D&W
Ø [mm]
L
[mm]
SW
[mm]
D1
[mm]
D2
[mm]
D3
[mm]
Weight
[kg/pce.]
15.0
20.0
26.5
100
130
150
30
36
46
30
33
40
43
46
54
62
62
95
0.60
0.95
1.50
Conical sleeve,
Item No.
511584
512084
512681
plastic, for easy removing of the metal cones
D&W
Ø [mm]
L
[mm]
D1
[mm]
D2
[mm]
Weight
[kg/100 pcs.]
15.0
20.0
26.5
81
110
120
31
34
41
41
44
54
1.40
1.60
2.00
Item No.
511588
512086
512683
Ratchet spanner
with nut to remove the metal cones
D&W
Ø [mm]
SW
[mm]
D
[mm]
L
[mm]
Weight
[kg/pce.]
15.0
20.0
26.5
30
36
46
42
50
62
56
65
65
0.28
0.43
0.60
Item No.
511597
511598
511599
ROBUSTA-steel cone ”RSK“
Weight
[kg/pce.]
Item No.
0.87
109931
Refined concrete cone
Two component glue
fitting to ROBUSTA-steel cone RSK
to glue in the refined concrete cone
Weight
[kg/pce.]
0.14
Item No.
109930
Weight
[kg/pce.]
2 x 0.5
Item No.
109931
Products subject to technical changes
17
5
ACCESSORIES FOR FORMWORK CONSTRUCTION
WATERPROOF TIGHTENINGS
Water stops: system 2
Non recoverable couplers with centered wall, for tie rods Ø 15.0 and 20.0 mm
This method has the advantage, that the single parts of the system can be stocked and used independent to the wall thickness.
The tie rods will be screwed into the couplers from both sides, by which the projecting length of the tie rods is of secondary
importance and can alter depending on the kind of formwork and installation. But the plastic tubes as distance holders have
to be cut according to the wall thickness, this is done quick and uncomplicated on the spot. After concreting the wall the tie
rods are completely recoverable and the remaining holes are covered with the usual plug with grooves.
For this system we offer 3 different types:
a) water stop, profilated on the outside, for tie rods
Ø 15.0 and 20.0 mm
The large profiling on the outer contour encreases the
surface of the nut and extends the path for the water, in
case it will come through to the outer side of the nut.
Special advantage when reinforcing:
These nuts can be mounted subsequently without problem
through the meshes of the already layed and plaited
reinforcement.
d=w
all th
D&W
15,0
20,0
d=w
all th
length
inclu
ded
18
ickne
ss
redu
cing
sleev
e
d=w
all th
length
Hint:
Alternative to the standard cone
we are offering a longer version
with a concrete covering of
50 mm.
ss
L K [mm]
115
140
b) water stop with welded sheet 120 x 120 mm
for tie rod Ø 15.0 mm
With this type the water circulation will be prevented with a
welded square sheet 120 x 120 mm. This sheet has got extra
cams to increase the compound effect with the concrete.
To prevent the entering of concrete grout a reducing sleeve
will be installed at the transition from the nut to the plastic
tube.
Please clarify before ordering of this type, whether the width
of meshes of the reinforcement is wide enough to push
through the square sheet 120 x 120 mm subsequently.
c) water stop with round sheet Ø 65 mm, for
tie rod Ø 15 mm
This type will be casted in one piece with the sheet. Because
of this manufacturing process it is the most inexpensive in our
assortment. To prevent the entering of concrete grout a
reducing sleeve will be installed at the transition from the nut
to the plastic tube.
ickne
inclu
ickne
ded
ss
redu
cing
sleev
e
Tie bars and accessories for formwork construction
ACCESSORIES FOR FORMWORK CONSTRUCTION
WATERPROOF TIGHTENINGS
5
TECHNICAL DATA:
Water stop, tempered cast, profilated on the outside
D&W
Ø [mm]
L
[mm]
SW
[mm]
D1
[mm]
Weight
[kg/pce.]
15.0
20.0
115
140
36
50
35
45
0.55
1.13
Item No.
511581
512081
Water stop, tempered cast, profilated on the outside
D&W
Ø [mm]
Version
Weight
[kg/pce.]
15.0
with welded sheet
120 x 120 mm
0.65
Item No.
511585
Water stop, tempered cast, with round sheet
D&W
Ø [mm]
Version
Weight
[kg/pce.]
15.0
with sheet Ø 65 mm,
length 122 mm
0.54
Plastic tube,
Item No.
511586
grey
D&W
Ø [mm]
DN
[mm]
Weight
[kg/pce.]
15.0
20.0
26.5
22/26
26/30
30/36
0.60
0.95
1.50
Item No.
511582
512082
512682
Plastic adapter
as reducing sleeve,
water stop on plastic tube
D&W
Ø [mm]
Weight
[kg/100 pcs.]
22/26
0.30
Item No.
511589
Plastic cones for plastic tube
D&W
D1
Ø [mm] [mm]
D2
L
Weight
[mm] [mm] [kg/100 pcs.]
15.0
15.0
20.0
42
45
50
22
22
26
32
70
32
0.61
2.20
0.90
Item No.
511583
511543
512083
Plug for plastic tube
DN
D&W
D
mm
L
mm
Weight
[kg/100 pcs.]
15,0
20,0
22
26
32
32
0,28
0,39
Artikel-Nr.
511590
512090
Products subject to technical changes
19
ROBUSTA-GAUKEL GMBH & CO. KG
Headquarters:
Berlin office:
Brunnenstr. 36
D-71263 Weil der Stadt-Hausen
Phone +49 (0) 70 33 / 5 37 10
Fax
+49 (0) 70 33 / 53 71 31
Internet www.robusta-gaukel.com
e-Mail [email protected]
Rohdestraße 19
D-12099 Berlin (Tempelhof)
Phone +49 (0) 30 / 75 70 70 00
Fax
+49 (0) 30 / 75 70 70 07
Internet www.robusta-gaukel.com
e-Mail [email protected]