CRH Leviat HALFEN SP User manual

®
Halfen SP INST_SP 02/23
Assembly Instructions • Montageanleitung • Notice d‘utilisation • Instrukcja montażu
• Montážní návod • Montagehandleiding
INST_SP 02
/
2
3
EN Sandwich Panel
Anchors
DE Sandwichplattenanker
FR Liaison pour panneaux
sandwich
PL Kotwy do zespalania
płyt betonowych
CS Kotvy pro spojování
sendvičových panelů
NL Sandwichverankeringen
INST SP 04/19-NL voor
Nederland inbegrepen

Type SP-SPA-FLEX
Sandwich panel anchor
2
Halfen SP Assembly Instructions
Deutsch EnglishFrançaisPolskiČeskyNederlands
© 2023 · INST_SP 02/23 · www.halfen.com
Type overview/materials:
Type SP-SPA-N
Connector pin
Type SP-SPA-A
Clip-on pin
Type SP-SPA-B
Stirrup tie
Type SP-FA
Flat anchor
Type SP-SPA-2
Sandwich panel anchor
Type SP-SPA-1
Sandwich panel anchor
Sandwich panel production — general notes
Production of the facing layer
• the reinforcement is placed in the prepared formwork
and support anchors and stirrup ties SP-SPA-B or
clip-on pins SP-SPA-A are installed to specifications
• concrete is poured evenly in the formwork
• compact the concrete (with external vibrator)
• connector pins are installed later.
Sandwich panel anchor:
SP-FA; SP-SPA:
Stainless steel, corrosion resistance
class CRC III in acc. with
EN 1993-1–4
Load-bearing layer
Insulation layer
Formwork
Facing layer
c
b
f
Placing the heat insulation layer
Press the insulation material tightly against the anchors.
Cut-outs have to be carefully made to accommodate the
anchors when high quality load resistant insulation
material is used. Cavities in the insulation must be
prevented as these will fill with concrete and cause thermal
bridges or constraint points.
Recommendation:
Install the heat insulation staggered in 2 layers. Single layer
insulation should have rabbet joints or the joints should be
sealed with suitable adhesive tape. This will prevent
concrete seeping into the joints. When using high quality
insulation materials (low thermal conductivity and low
water absorption) the thickness of the heat insulation layer
can be reduced. The resulting increase in anchor load-
bearing force permits the use of support anchors with a
lower load rating. Insulation materials with low water
absorption capacity favourably effect concrete shrinkage.
Placing separating foil between layers
Separating foil prevents concrete slurry from seeping into
the heat insulation joints. Any adhesion between the heat-
insulation layer and the load-bearing layer concrete is also
avoided. This is important when using rough, expanded
polystyrene insulation material. A foil layer can be placed
between the facing layer and the insulation layer to ensure
optimal flexibility of the facing layer. No foil is necessary
when using a high grade insulation material with smooth
surface.
Production of the load-bearing layer
• install the load-bearing layer reinforcement
• load bearing insulation material will assist installation
• the concrete is poured into the formwork evenly and
compacted
Concrete strength:
Facing layer ≥ C 30/37
Load -bearing layer ≥ C 30/37
Reinforcement:
Reinforcement mesh B500A, B500B
Reinforcement bars B500A, B500B
Minimum reinforcement of the
concrete layer:
Crosswise, 1.88cm²/m,
if f,c ≥ 10cm, then two layers
of reinforcement are required.

ca a c
L
f
b
H
3
Halfen SP Assembly Instructions
Deutsch EnglishPolski FrançaisČesky
Nederlands
© 2023 · INST_SP 02/23 · www.halfen.com
SP-FA Flat anchor
Minimum embedment depth for flat anchor FA
The minimum embedment depth (a) of the flat anchor de-
pends on the thickness of the facing layer (f).
Type FA-1 FA-2 FA-3
Material
thickness 
[mm]
1.5 2.0 3.0
H ≥ 2 ×a + b
Selecting the anchor height for FA
The height of the flat anchor (H) depends
on the thickness of the insulation layer (b)
and the embedment depth (a).
SP - FA - 2 - 225 - 240
Article group
Anchor type
Material thickness 
Anchor height H [mm]
Anchor length L [mm]
Identification, example
Load-bearing layer Facing layer
Embedment depth a / Concrete cover c [mm]
f [mm] b = 30 - 250 mm
ac
60 ≥ 50 ≥ 10
70 - 120 ≥ 55 ≥ 15
Anchor height H [mm]
f [mm] b [mm] * on request
30 40 50 60 70 80 90 100 120 140 160 180 200 230 250
60 150 150 175 175 175 200 200 225 225 260 280 300* 325* 350* 375*
70 - 120 150 150 175 175 200 200 200 225 260 260 280 300* 325* 350* 375*
Additional reinforcement for FA
The anchor bars have to be placed in
the facing and load-bearing layers.
The number of reinforcement bars
depends on the size of the flat anchor.
Additional reinforcement
Flat anchor Length L [mm] Symbol Anchor bars
B500A, B 500 B 
L
H
80 2 × 4 ∅ 6mm
l = 400mm
120 2 × 5 ∅ 6 mm
l = 400mm
160, 200, 240,280 2 × 6 ∅ 6mm
l = 400mm
320,360,400 2 × 7 ∅ 6mm
l = 400mm
Depending on exposure classification, stainless anchor bars may be required.
Installation parameters

b
s
r
f
L
aVaTc
H
4
Halfen SP Assembly Instructions
Deutsch EnglishFrançaisPolskiČeskyNederlands
© 2023 · INST_SP 02/23 · www.halfen.com
SP - SPA-2 - 09 - 220
Article group
Anchor type
Bar diameter ∅
Anchor height H [mm]
Identification, example
Sandwich panel anchors SP-SPA-1, -2
Selecting the anchor height for SPA-1, -2
The height of the SPA anchor (H) depends on the thickness of the insulation
layer (b) and the embedment depths (aVand aT).
Additional reinforcement for SPA
Place the B500 A or B500 B 
anchor bars in the facing and load-
bearing layers. The length and
diameter of the reinforcement bars
depends on the anchor size.
Embedment depth a / Concrete cover c [mm]
Type
Article name
SP-SPA-1-05
SP-SPA-2-05
SP-SPA-1-07
SP-SPA-2-07
SP-SPA-1-09
SP-SPA-2-09
SP-SPA-1-10
SP-SPA-2-10
b 30–70 40–150 60–250 200–300
av≥ 49 ≥ 50 ≥ 53 ≥ 54
aT≥ 55 ≥ 55 ≥ 55 ≥ 55
c ≥ 25 ≥ 25 ≥ 25 ≥ 25
Additional reinforcement [mm]
Type SPA-1-05 SPA-1-07 SPA-1-09 SPA-1-10
r1 ∅ 8 1 ∅ 8 1 ∅ 8 1 ∅ 8
l = 450 l = 450 l = 700 l = 700
s1 ∅ 8 1 ∅ 8 1 ∅ 10 1 ∅ 10
l = 700 l = 700 l = 700 l = 700 
Type SPA-2-05 SPA-2-07 SPA-2-09 SPA-2-10
r2 ∅ 8 2 ∅ 8 2 ∅ 8 2 ∅ 8
l = 450 l = 450 l = 700 l = 700
s2 ∅ 8 2 ∅ 8 2 ∅ 10 2 ∅ 10
l = 700 l = 700 l = 700 l = 700 
for L > 500mm l = 900mm, for L > 800 mm l = 1100 mm.
Depending on exposure classification, stainless-steel anchor bars may
be required.
H ≥ aV+ b + aT
Installation parameters

Facing layer Load-bearing layer
f ≥ 60 b ≥ 100
≥ 5
≥ 30 * ≥ 30 * ≥ 55
av
aT
fb
aa
H
SP - SPA-FLEX - 05 - 220
Article group
Anchor type
Bar diameter ∅
Anchor height H [mm]
Identification, example
Installation parameters [mm]
Type SP-SPA-FLEX-04 SP-SPA-FLEX-05 SP-SPA-FLEX-07
b 30–400 30–400 30–400
a≥60 ≥70 ≥80
f≥60 ≥70 ≥80
5
Halfen SP Assembly Instructions
Deutsch EnglishPolski FrançaisČesky
Nederlands
© 2023 · INST_SP 02/23 · www.halfen.com
Facing layer Load-bearing layer
f ≥ 60 b ≥ 100
≥ 50≥ 5 ≥ 55 ≥ 50
avaT
Facing layer Load-bearing layer
f ≥ 60 b ≥ 100
≥ 35
≥ 30 * ≥ 30 * ≥ 65
av
aT
Restraint ties require no additional reinforcement.
Restraint ties (connector pins SP-SPA-N, clip-on pins SP-SPA-A and stirrup ties SP-SPA-B)
Connector pins SP-SPA-N Stirrup ties SP-SPA-B
Clip-on pins SP-SPA-A
Selecting the anchor height
l ≥ av+ b + aTSP - SPA-N - 04 - 220
Article group
Anchor type
Bar diameter ∅
Anchor height H [mm]
Identification, example
All dimensions in [mm]. * ≥ 35 for f ≥ 70 mm
Installation parameters
Sandwich panel anchor SPA-FLEX
H ≥ 2 ×a + b
45°
SPA-FLEX anchors require no
additional reinforcement.
Selecting the anchor height for SPA-FLEX
The height of the SPA-FLEX anchor (H) depends on the thickness of
the insulation layer (b) and the embedment depth (a).

3
2
30
30
30
30
1
6
Halfen SP Assembly Instructions
Deutsch EnglishFrançaisPolskiČeskyNederlands
© 2023 · INST_SP 02/23 · www.halfen.com
SP-FA Flat anchor: Reinforcing the bottom concrete layer and placing the anchor rods
1Insert two anchor bars bent 30° at the middle,
(L = 400mm) in the outermost holes of the topmost
row of the round holes in the flat anchor.
2Position the flat anchor on the reinforcement mesh at
the predefined position. Insert the anchor bars acc. to
table "additional reinforcement" (→ page 3) from
under the reinforcing mesh, through the bottom row
of round holes of the flat anchor.
3Twist the bent anchor bars to the horizontal and tie to
the reinforcement mesh.
Preparation of the bottom layer

Load-bearing layer
Facing layer
∅s
∅r
ls
lr
7
Halfen SP Assembly Instructions
Deutsch EnglishPolski FrançaisČesky
Nederlands
© 2023 · INST_SP 02/23 · www.halfen.com
SP-SPA-1, -2 Placing anchors using the positive process = facing layer up
• Support anchors are fitted with factory welded rebars
∅ 4 × 300 mm for sandwich panels production using the
positive process method (customized production on
request).
• The support anchors are installed in the top reinforcement
mesh of the load-bearing layer. The welded bars are wired
to the mat and secured with the secondary rebars
(∅ see table "additional reinforcement" → page 4).
∅ 4 × 300 mm factory welded to the
SPA-1 anchor (special version)
∅ s ∅ s
∅ s
∅ 4 × 300 mm welded
(special version)
Facing layer
Load-bearing layer
lr
ls
∅ r
∅ s
y
ls
ls
lr
∅r
SPA-1
SPA-1
lr
∅r
∅r
SPA-2
SPA-2
SP-SPA-1, -2 Placing anchors using the negative process = facing layer down (standard case)
• Place the support anchors on the reinforcement mesh and
secure under the mesh with one or two reinforcement
bars (ø r and length depend on anchor type, as shown
in the table "additional reinforcement" → page 4).
Preparation of the bottom layer
∅ 4 × 300 mm factory welded to the
SPA-2 anchor (special version)

8
Halfen SP Assembly Instructions
Deutsch EnglishFrançaisPolskiČeskyNederlands
© 2023 · INST_SP 02/23 · www.halfen.com
• Hook under the top reinforcement bar as shown .
• Turn to an upright position .
• Turn clockwise whilst pressing the legs together and
clip onto the bottom reinforcement bar .
• Pass the clip-on pin under the top reinforcement bar and
swing to an upright position .
• Twist the clip-on pin to the left over the bottom
reinforcing bar .
• Clip the clip-on pin firmly to the mesh node .
• Pass the clip-on pin at a mesh node under the top
and over the bottom reinforcement bar. Press the legs
slightly to the left and insert a nail as shown under the
top reinforcement bar.
Installing clip-on pins SP-SPA-A
Installing stirrup ties SP-SPA-B






Alternative:
• Pour the concrete.
• Compact the concrete.
Bottom layer; pour and compact the concrete
Preparation of the bottom layer
Important:
When using a spud-vibrator, avoid contact
between the vibrator and the anchors.
Contact will cause a separation of the facing
concrete resulting in colour variations making
the anchor contours visible.

9
Halfen SP Assembly Instructions
Deutsch EnglishPolski FrançaisČesky
Nederlands
© 2023 · INST_SP 02/23 · www.halfen.com
Placing the heat insulation layer
Flat anchors SP-FA
• The insulation can be simply pressed over the flat
anchors.
• Alternatively the insulation joint can be aligned exactly
with the position of the flat anchor.
SP-SPA-1 Support anchor
• Cut the insulation material along the longitudinal axis of
the anchor and push the segments back together.
SP-SPA-2 Support anchor
• The insulation is cut so that the cut-end is midway
between the sandwich supporting anchor.
• Two cuts are then made in the insulation to
accommodate the anchor bars (space between two bars).
• Both halves are then pushed over the bars of the anchor
from each side to close the gap.
Alternative:
• A rectangular hole, the size of the anchor projection is
cut out of the insulation board.
• After the insulation board has been placed over the
anchor, use the smaller, previously cut out bit of
insulation to close the hole.
• Styropor® panels can be easily pressed over the stirrups.
• When using extruded hard foam, the insulation layer
should be cut out at the anchor positions to avoid
bending the stirrups.
Sandwich panel anchors SP-SPA-1; SP-SPA-2
Clip-on SP-SPA-A Pins, SP-SPA-B Stirrup ties

SP-SPA-1, -2 Anchor installation using the negative process = facing layer down (standard case)
10
Halfen SP Assembly Instructions
Deutsch EnglishFrançaisPolskiČeskyNederlands
© 2023 · INST_SP 02/23 · www.halfen.com
• Push one or two reinforcement bars through the
SPA loop ends and secure.
∅
s, ls, see table “Additional reinforcement“ (→ page 4).
ls∅s
Placing the bottom reinforcement layer for the supporting layer.
SPA-2
ls∅s
SPA-1
Negative process = facing layer down (standard case)
Load-bearing layer
Facing layer
lr
ls
∅s
∅r
SP-SPA-1 and SP-SPA-2
SP-FA Flat anchor
• Similar to installation in the bottom concrete layer,
straight and angled anchor bars are inserted through
the round holes in the flat anchors in accordance with
the table "Additional reinforcement" (→ page 3) and
secure in position (wire-tied to the slab reinforcement).
• Replace cut individual bars with additional
reinforcement with the same cross-section.
Preparation of the top layer