JORDAHL-STRAPUNGERE

8/13/2019 JORDAHL-STRAPUNGERE

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JORDAHLFIXING TECHNOLOGY

Deutsche Kahneisen Gesellschaft mbH BerlinE-Mail: [email protected]

Internet: www.jordahl.de

JORDAHL-Studrails JDA


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JORDAHL FIXING TECHNOLOGY

JORDAHL-JDA Studrail

The product name JORDAHL invokes memories of a pioneerof fixing technology and the inventor of the cast in channel.Our company name KAHNEISEN goes back even further, tothe start of reinforced concrete. Kahn steel (Fig. 3)was alreadyin use as reinforcing steel at the beginning of the 20 thcen-tury. It had upturned wings that resisted transverse forces inthe ceiling panel area. The involvement of the Kahn Brothersin the reinforcement of concrete and the optimum utilisationof cross-section and form was the stimulus for us when incor-porating studrails into our product range.Flat roof structures with large spans between supportingcolumns, allow optimum use of large area factory or ware-house buildings.

Advantages underside of ceiling has flat appearance less outlay for formwork optimum use of space

However, even in the early days of concrete structures, theproblem of punching shear at the column head area (Fig. 1)was recognised. An alternative to get around the trouble-some downstand was the design of column capitals inabout 1900 (Fig. 2).

More recently, plates with stud type supports in accordancewith DIN 1045 have been adopted. These can be designedwith or without a capital and with saddles or angled wings forthrust reinforcement depending upon the loading conditions.This solution will often result in thick slabs, a limitation ofspans between supporting columns and it is time consumingat installation time (Fig. 4).

As an alternative, Andr et al have proposed doweling thearea weakened by the punching shear using dowel strips. Thissolution was developed further to produce studrails madefrom reinforcing steel, each with two swaged heads (Fig. 5).

With implementation of german standard DIN 1045-1:2001a basic revision of the german approval became necessary.The new german approval Z-15.1-214 corresponds with thepartial safety factor approach (like in the Eurocodes) andreplaced the old approval Z-15.1-172.

A piece of history

Further information

More technical information is available by contacting us atthe following address:

Deutsche Kahneisen Gesellschaft mbHNobelstrasse 51

D-12057 Berlin, Germany

Fon: +49 - 30/682 83-02, Fax: +49 - 30/682 83-497E-Mail: [email protected], Internet: www.jordahl.de

Fig 1: punching failure

Fig. 2: mushroom floor slab with column capitals

Fig. 3: Kahn-Eisen

Fig. 4: flat ceiling with bent-up rebar

Fig. 5: JDA-punching shear reinforcement


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Double-headed anchors have achieved the best results intests. In practice they have shown themselves to be a particul-arly efficient and economical method of punching shearreinforcement. JORDAHLJDA studrail consists of doubleheaded anchors connected by a metal strip. Alternative spac-ing methods are also available to suit specific installations,e.g.

with spacing rods for use in precast slabs.

Advantages Construction authority approved for static and dynamic

loads (to meet the requirements of BS, ACI, DIN, Eurocodeand CSA)

Higher loading with slip resistant transmission of force dueto the arrangement of the anchor heads on each side

Optimum slab thickness, can be achieved for slab thick-nesses above 18 cm

Saves time by fitting from above after laying the whole ofthe reinforcement cage

Suitable for precast slabs by fixing on the formwork or bylaying on mesh supports

The solution: JDA studrail

The made-to-measure solution JORDAHLJDA Studrail

The serviceJORDAHLprovides custom solutions, made-to-measure: To suit your design criteria and specific application require-

ments with skilled technical advice and fast and flexible delivery

calculation software

The productThe JORDAHLstudrail is manufactured to the appropriatestatic requirements.The double headed anchors can be supplied with dA= 10, 12,14, 16, 20 and 25 mm. The length of the anchor is between125 and 650 mm.Longer lengths can be manufactured at the customersrequest.Double-headed anchors are made from BSt 500 S and theconnecting strip is made from structural steel.

Anchor support capabilities

anchor head head anchor

diameter diameter thickness cross section

dA[mm] dK[mm] hK[mm] A [mm2]

10 30 5 79

12 36 6 113

14 42 7 154

16 48 7 201

20 60 9 314

25 75 12 491


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JORDAHL FIXING TECHNOLOGY


Applications / Installation

Depending on the architectural or design criteria, studrails

can be adapted for use at slab edges, in corners and piers.

Examples 1 to 9 below indicate a typical range of applications

for JORDAHLstudrails.

Range of applications

When used in suspended installations, the free anchor heads

must extend at least to the lower edge of the bottom layer ofreinforcement and, in upright installations, to the upper edge

of the top layer of reinforcement.At the same time, the required concrete cover must be main-

tained.

Installation from aboveThis is the most common way: first install all the rebar,then push the studrails through the mesh.

Installation from below using JDA-FT-KLJDA studrail is fitted on the formwork using connectingstrips on suitable spacers. This version is installed in threesteps: position the metal strips with spacers on the formwork install all rebar and lattice girders click the anchors into the metal strip

Additional application solutions

Rectangular edge supportRectangular internal support

Round internal support

Rectangular corner support

Example 4

Example 5

Round edge support

Example 6 + 7

Example 1 Example 2 + 3

Internal corner End of wall

Example 9Example 8

Installation underneath lattice girders in precast elementsInstallation from above for in situ concrete

Installation of JDA-FT-KL (the click version)


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To provide JORDAHLpunching shear reinforcement JDAto supplement the reinforcement of areas weakened bypenetration on flat roofs of thickness d = cm withpoint type supports and to install in accordance withinformation provided by the support structure designer.

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Calculation in accordancewith construction author-ity approval No. 7-15.1-214

compatible withDIN 1045-1 using partialsafety factors

On your request we will send example calculations or helpwith specific customer enquiries.

Ordering example, Enquiry specification text, Software

Calculation example

Order list from software

Software

Ordering example

Spacers For installing JDA from below you need suitable spacers between strip and formwork. Spacers for 15, 20, 25,

and 30 mmare available.

Enquiry specification text

JDA - 2 / 14 / 255 - 360

number dA anchor strip of anchors length length

JDA-Standard

JDA - 4 / 14 / 255 - 760

number dA anchor strip of anchors length length

anchor spacing: (lk1/ la1/la2/ la3/.../ lk2)

JDA optimized

JDA - FT-KL - 2 / 14 / 255 - 380

type dA anchor strip length length number

of anchors

anchor spacing: (lk1/ la1/. .. / lk2)

JDA-FT-KL (for precast)

The result of the JORDAHL-software can be printed inform of an ordering schedule.

We provide easy-to-use calculation software for you to selectthe correct JDA studrail.

by Deutsche Kahneisen Gesellschaft mbH.

All rights reserved.

We reserve the right to modifications within the framework of continueddevelopment concerning the product and application methods.


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GERMANYDeutsche KahneisenGesellschaft mbHNobelstrae 51D-12057 Berlin

Phone: 0049 30 6 82 83-02Fax: 0049 30 6 82 83-4 97TechnicalDept.: 0049 30 6 82 83-4 98Sales: 0049 30 6 82 83-4 94

Production Plant TrebbinIndustriestrae 5D-14959 Trebbin

Phone: 0049 33731 88-0Fax: 0049 33731 88-141

[email protected]

DENMARKJordahl & PfeiferByggeteknik A/SRisgrdevej 66, RisgrdeDK-9640 FarsPhone: 0045 98 63 19 00Fax: 0045 98 63 19 [email protected]

HEADQUARTER

AUSTRIAGHL BautechnikProduktions- und Handels GmbHCaracallastr. 16A-4470 EnnsPhone: 0043 7223 819 19 0Fax: 0043 7223 819 19 [email protected]

FINLANDSemtu Oy

P.O. Box 124FIN-04201 KeravaPhone: 00358 927 47 95 0Fax: 00358 927 47 95 40

[email protected]

HUNGARYPfeifer-Garant KFT

Gymri u. 128H-1103 BudapestPhone: 0036 1 260 10 14Fax: 0036 1 262 09 [email protected]

NETHERLANDSVebo-Staal B.V.Industrieterrein

Rntgenweg 3

NL-3752 LJ BunschotenPhone: 0031 33 29 92 687Fax: 0031 33 29 92 [email protected]

SAUDI ARABIARolaco Trading & ContractingBuilding Materials DivisionAl-Sulaiman Bldg.P. O.Box 222 Medinah RoadSA-21411 JeddahPhone: 00966 2 651 80 28Fax: 00966 2 653 42 [email protected]

SWEDENPre Tec Precast Technology AB

Traktorgatan 13S-44240 KunglvPhone: 0046 303 243 080Fax: 0046 303 913 [email protected]

DENMARKUniversalFastgrelse A/S

Mllehaven 6DK-4040 JyllingePhone: 0045 46 73 10 60Fax: 0045 46 73 04 [email protected]

BELGIUMN.V. Plakabeton S. A.

Industrielaan 2B-1740 TernatPhone: 0032 2 58 22 94 5Fax: 0032 2 58 35 16 [email protected]

FRANCEArteon S.A.

12 rue des CressonniresF-95500 GonessePhone: 0033 134 45 90 45Fax: 0033 139 85 36 25

[email protected]

ITALYFrank Italy GmbH

Industriezone, Mhlen 3I-39032 Sand in Taufers (BZ)Phone: 0039 0474 65 90 08Fax: 0039 0474 65 90 [email protected]

NORWAYPretec A/ S

Postboks 102N-1740 Borgenhaugen

Phone: 0047 69 10 24 60Fax: 0047 69 16 71 [email protected]

SINGAPOREJ& P Building Systems Pte Ltd

No. 48 Toh Guan Road East#08-104 Enterprise HubSG-Singapore 608586Phone: 0065 65 69 61 31Fax: 0065 65 69 52 86

[email protected]

SWITZERLANDAnkaba Ankertechnik und

Bauhandel AGZrichstrae 38aCH-8306 BrttisellenPhone: 0041 44 807 17 17Fax: 0041 44 807 17 [email protected]

ESTONIAAS Semtu

Suur Sojame 33EE-11415 TallinnPhone: 00372 606 38 70Fax: 00372 606 38 [email protected]

CZECH REPUBLICJ& P Stavebni Technika s.r.o.

Prumyslova 5CZ-10850 Praha 10Phone: 00420 2 72 70 07 01Fax: 00420 2 72 70 37 [email protected]

GREAT BRITAINJ& P Building Systems Ltd.Unit 5, Thame 40Jane Morbey RoadGB-Thame/ Oxon OX9 3RRPhone: 0044 1844 215200Fax: 0044 1844 263257

[email protected]

LATVIASemtu SIA

Gailezera 8LV-1079 RigaPhone: 00371 738 39 81Fax: 00371 738 39 [email protected]

POLANDJ& P Technika BudowlanaSp.z.o.o.Ul. Wroclawska 68PL-55-330 Krepice k/Wroclawia

Phone: 0048 71 39 68 364Fax: 0048 71 39 68 [email protected]

SLOVAKIAJ&P Stavebni Technika s.r.o

Prumyslova 5CZ-10850 Praha 10Phone: 00420 2 72 70 07 01Fax: 00420 2 72 70 37 [email protected]

U.A.E.EMIRATES GERMAN BUILDING

Materials Trading L.L.C.P. O.Box 18917Store No: ST-1Al-Qusais Ind. Area-4 Beirut StreetU. A. E.-DubaiPhone: 00971 4 267 66 44Fax: 00971 4 267 66 [email protected]

HONG KONGSino Linker Limited

Room 2002, Seaview Commercial Bldg.21 Connaught Road West, Sheung WanHK-Hong KongPhone: 00852 22 85 80 38Fax: 00852 22 85 83 [email protected]

LITHUANIAUAB Semtu

Vilkpedes g.10

LT-2009 VilniusPhone: 00370 52 31 15 48Fax: 00370 52 31 16 53techkonsultantas @semtu.lt

RUSSIAOOO BauMonTekpos. Vnukovo,ul. Zentralnaja, 16, str. 6RUS-119027 MoscowPhone: 007 495 436 77 12Fax: 007 495 436 73 [email protected]

SPAIN-PORTUGALJ& P Tecnicas de Anclaje s.l.

Avda. de los Pirineos,no. 25, nave 20ES-28700 S.S. de los Reyes (Madrid)Phone: 0034 91 65 93 185Fax: 0034 91 65 93 139www.jp-anclajes.com

[email protected]

DIN EN ISO 9001

Certific ate: 01 100 005218

SUBSIDIARIES AND AGENTS

Condition

05/2005/3rdE

dition

02-08

/zbp/1.5

00

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JORDAHL-STRAPUNGERE