TIES AND CONNECTOR PIN

Replaces the brochure 1/04 5/2007

Bene ts of ties and connector pinsreliable and well-known connector for sandwich element shells with over 40 years of use experienceeasy to install between insulation piecesstainless material inside insulation layersizes according to insulation thicknessesbeam tie for low elements and openings

TIES AND CONNECTOR PIN

Peikko bene ts

reliable: passed demanding test program

competitive price and delivery time

economical and easy to use in designing, manufacturing and installation of the elements

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CONTENTS

1. DESCRIPTION OF THE SYSTEM ............... 4

2. DIMENSIONS AND MATERIALS .............. 52.1 PD diagonal tie 5

2.2 PPA beam tie 5

2.3 PPI connector pin 6

2.4 Materials 6

3. MANUFACTURING .................................. 73.1 Manufacturing method and markings 7

3.2 Tolerances 7

3.3 Quality control 7

4. CAPACITIES ............................................ 74.1 Welding joints 7

4.2 Anchoring the cross joint 7

4.3 Capacities of PPI connector pins 7

5. DESIGN ................................................... 85.1 Design principles 85.1.1 Selecting the type of tie 85.1.2 Positioning of the ties 8

5.2 Connector pin application 95.2.1 Limitations for application 95.2.2 Design rules information 9

5.3 Example 10

6. INSTALLATION ....................................... 106.1 Installation of ties 10

6.2 Installation of connector pin 10

4Figure 1. PD diagonal ties and PPA beam ties in wall element.

TIES AND CONNECTOR PIN

1. DESCRIPTION OF THE SYSTEMTies are connecting reinforcement which allows you to join sandwich panels concrete layers together.

Sandwich panels can be divided in to two groups according to their structural composition:

Panels, where the internal layer is the supporting structure. The external layer is hung by connecting reinforcement from the internal layer.Panels, where the layers work together. Compression capacity is greater.

PD diagonal ties are designed to join sandwich panels concrete layers together from full height of the panel.

PPA beam ties can be used in low structures e.g. door and window beams and also in low foundation elements.

PPI connector pins are used to connect the concrete layers of the sandwich panel together. The pins will not improve the compressive capacity of the load bearing concrete layer. The connector pins can be used for example in polyurethane or polystyrene insulated sandwich panels, panels where footing carries the exterior concrete layer and in edges of the panels as an additional tie.

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2. DIMENSIONS AND MATERIALS2.1 PD diagonal tie

Table 1. Dimensions of the PD diagonal tie [mm].L

= 24

00

H

INT

ER

NA

L B

AR

EX

TE

RN

AL

BA

R

300

300

DIAG

ON

AL

PD tie H (bars c/c)advisable insulation thickness

L

PD 150 150 90

2400

( o

or h

eigh

t 28

00)

PD 180 180 120

PD 200 200 140

PD 210 210 150

PD 220 220 160

PD 240 240 180

PD ties standard length is 2400 mm. PD ties can be manufactured in multiples of 300 mm. Ties Hmin is 120 mm and Hmax is 320 mm.

2.2 PPA beam tie

Table 2. Dimensions of the beam tie [mm].

250

EX

TE

RN

AL

BA

R

INT

ER

NA

L B

AR

H

top

bottom

PPA beam tie H (bars c/c)advisable insulation thickness

PPA 150 150 90

PPA 180 180 120

PPA 200 200 140

PPA 210 210 150

PPA 220 220 160

PPA 240 240 180

PPA 260 260 200

PPA 280 280 220

6TIES AND CONNECTOR PIN

2.3 PPI connector pin

Table 3. Dimensions of PPI connector pin and advisable insulation thicknesses [mm].

62

H4

PPI connector

pinH

advisable insulation thickness

straight 45 angle

PPI 170 170 80 -

PPI 190 190 100 -

PPI 210 210 120 -

PPI 230 230 140 80

PPI 250 250 160 100

PPI 280 280 190 120

The minimum length of connector pin is insulation thickness +90mm.

2.4 Materials

Table 4. Materials.

tie internal bar external bar diagonal

PDM 5 mm B500K 5 mm B500K

5 mm 1.4301

PD 5 mm B500K 5 mm B600KX

5 mm 1.4301

PDR 5 mm B600KX 5 mm B600KX

5 mm 1.4301

PPA 5 mm B600KX 5 mm B600KX

5 mm B600KX

The material of PPI connector pin is 4 mm B600KX.

Table 5. Standards and strenghts of the materials.

material standard strength

B500K SFS 1257 fyk 500 N/mm2

B600KX SFS 1259 0,2 600 N/mm2

1.4301 SFS-EN 10088-3 0,2 500 N/mm2

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3. MANUFAC-TURING3.1 Manufacturing method and markings

Ties are produced by using automatic resistance welding and are cut mechanically to length.

The connector pins are cut and bent mechanically.

The ribbed bars in ties have the manufacturers marking of 6 + 6 + 2. The mark is repeated every half a meter. Each pile of ties is marked with the mark of Inspecta, the emblem of Peikko Group, the type and quantity of the product and manufacturing date.

Stainless external bar in PD ties is marked with yellow paint marks at both ends of the bar.

Connector pin packages are marked with type of the pin and the emblem of Peikko Group. Package size 500 pcs.

3.2 Tolerances

Tie length 10 mmTie width 5 mmDiagonal or cross bar distance 5 mmDiagonals straightness between bars 2 mmConnector pin length 5 mm

3.3 Quality control

The welding joint is tested according to SFS 1201 standard.

The quality control involved in producing the steel parts conforms to the requirements set by the Finnish Building Code. Peikko Finland Oy is under the Inspecta Certi cation for quality control.

PD diagonal ties and PPI connector pins have certi ed product declarations con rmed by the Concrete Association of Finland.

4. CAPACITIES4.1 Welding joints

Table 6. The welding joint between diagonal and bar [kN].

Characteristic tensile capacity NRsk 7.0

Capacity value NRsd 5.6

4.2 Anchoring the cross joint

Table 7. Capacity of the cross joint anchoring [kN].

The anchor depth of bars 15 mm(+5)25 mm

(5)

Characteristic tensile capacity NRck 4.7 7.0

Capacity value NRcd 3.8 5.6

4.3 Capacities of PPI connector pins

Table 8. Capacities of PPI connector pins [kN].

concrete K25 K10

Characteristic tensile capacity NRck 7.0 3.8

Capacity value NRcd 3.5 1.9

8TIES AND CONNECTOR PIN

5. DESIGN5.1 Design principles

5.1.1 Selecting the type of tie

In load bearing wall elements the internal layer is the compressed load bearing structure. With stiff PD ties the layers can be made to work together and the compression capacity of the element is increased. Because the internal layer is thin therefore its stability limits its capacity.

In hung and light loaded wall elements its enough that the external layer is hung from the internal layer. Then there is no need for the layers to work together.

The c/c of the ties bars is selected according to insulation thickness and required anchoring depth. Recommended width for the tie is insulation thickness +60 mm, which means that the anchoring depth of the bar is 25 mm.

5.1.2 Positioning of the ties

In load bearing wall elements where the layers work together the PD diagonal ties c/c is 600 mm. You have to pay attention to the effect that openings cause. In narrow spaces (300 600 mm) two ties are used. The layers working together in spaces below 300 mm usually cannot be used.

In the hung external layers usually the c/c of the ties is the same as the insulation width.

The outermost ties distance from the elements edge has to be between 100 300 mm. Ties distance from upper and bottom edge has to be 200 mm. Placing the ties near the element edge will reduce element edges from bending. The smallest c/c of the ties is 100 mm.

5.1.3 Requirements for concrete and reinforcement

The concrete strength of the element has to be at least K15 (Finnish Building Code) before removing the element from the mould. Otherwise the concrete has to correspond to local building codes concerning wall elements. The element is lifted up from both layers, for example with Peikko PNLF lifting anchor.

Distances between diagonals in PD are designed for c/c 150 meshes. This way the ties never change the position of the mesh.

The designer has to take care of the concrete cover thickness. The thickness of concrete cover must be adequate according to environmental exposure class and intented operating life. Required edge and central distances have to be followed.

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5.2 Connector pin application

5.2.1 Limitations for application

Connector pin requires 50 mm anchoring length. Anchoring depth is ensured by installing the pin through insulation up to the limiter in the pin.

5.2.2 Design rules information

Connector pins are installed to the whole sandwich panel with maximum distance of 500 mm.

To prevent the warping of the exterior concrete layer the rst pins must be located less than 150 mm from the edge of the panel. One pin is located at every corner.

Table 9. Measurements of the pin in perpendicular use.

5040

E

Insulation [mm] Connector pin

80 PPI 170

100 PPI 190

120 PPI 210

140 PPI 230

160 PPI 250

190 PPI 280

Connector pin can also be used in diagonal direction. Diagonal use requires special length pin and installing jig so that suf cient anchorage can be achieved. Diagonal pin can be replaced with PPA beam tie.

Table 10. Installation of the connector pin with installing jig.

H

>50

45

Insulation [mm] Connector pin

80 PPI 230

100 PPI 250

120 PPI 280

10

TIES AND CONNECTOR PIN

5.3 Example

The required ties for the sandwich panels are calculated by following method. External panel is hanging from the load bearing internal panel. Ties can be measured also with Peikko-Ties dimensioning program. The free program is available to download from www.peikko.com.

Figure 2. Direction of forces.

NRsdy

N Rsd

Gd

Size of the sandwich panel 5000 mm x 2800 mm, external layer 85 mm, insulation 160 mm and internal layer 150 mmFor the type of tie is chosen PD220-2400 by the insulation thicknessThe anchoring depth of bar is 25 mmThe dimensioning load of external layer Gd = 1,35 x (0,085 m x 5,000 m x 2,800 m) x 25 kN/m3 = 40,20 kNThe capacity value of welding joint between diagonal and bar in the direction of diagonal NRsd = 5,60 kN, the capacity in the direction of load NRsdy = 5,60 kN x cos 45 = 3,96 kNThe anchoring capacity of diagonal with anchoring depth 25 mm NRcdy = 5,60 kN x cos 45 = 3,96 kNThe required amount of diagonals in sandwich panel 40,20 kN / 3,96 kN = 11 pcs

One PD220-2400 tie has 4 pieces of diagonals. The required amount of ties according to calculation is three pieces. Other factors such as deformation caused by temperature differences and moisture will be determining. The recommended centre distance between ties is 600 mm. Usually the c/c distance of the ties is the same as the width of insulation piece.

6. INSTALLATION6.1 Installation of ties

The ties are installed into fresh concrete in turns with insulation panels. This way it can be ensured that the proper anchoring of the tie occurs in the lower layer. Ties are not allowed to be inserted through the insulation. Designed anchoring length (usually 25 mm) of the tie has to stay above the insulation. The insulation panel is installed tightly against the tie so that there is no air gap around the tie.

Stainless steel bar marked with yellow paint is meant for the external layer of the sandwich panel.

The erection of elements has to be done according to designs.

6.2 Installation of connector pin

Connector pin is pushed straight through the insulation to the right level. During installation the pin is moved back and forth so that concrete will compact around the pin. The loop of the pin is checked so that reinforcement bar will be hooked.

Pin in diagonal direction is installed with installing jig which ensures the right installation angle.

Figure 3. Peikko-Ties dimensioning program.

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