HALFEN HIT INSULATED...

Z-HIT-HP 15-E

CONCRETE

HALFEN HIT INSULATED CONNECTION

Translation of the German original version of the National Technical Approval No. Z-15.7-293 not authorized by the Deutsches Institut

für Bautechnik (German Institute of Construction Engineering)

National Technical Approval

Date:

07 September 2010

Approval number: Valid until:

Z-15.7-293 07 September 2015

Applicant:

HALFEN GmbH Liebigstraße 14 40764 Langenfeld

Generic type of construction product:

HALFEN Insulated Connection HIT-HP / HIT-SP with compression shear bearings according to DIN 1045-1

The aforementioned construction product is herewith granted the National Technical Approval.

This National Technical Approval comprises eleven pages and seven Annexes with 13 pages.

Important notice:

The approval in hand is the translation of a document originally prepared in the German language which has not been verified and officially authorized by the “Deutsches Institut für Bautechnik” (German Institute of Construction Engineering). In case of doubt in respect to wording and/or interpretation of this approval, the original German version of this document shall prevail exclusively. Therefore no liability is assumed for translation errors or inaccuracies.

Translation of the German original version of the National Technical Approval No. Z-15.7-293 not authorized by the Deutsches Institut für Bautechnik (German Institute of Construction Engineering)

Page 2 of 11 │ 07 September 2010

I General Provisions

1 This National Technical Approval attests to the usability and applicability of the aforementioned construction product in accordance with the regional building codes of the German Laender.

2 Provided that the National Technical Approval requires special knowledge and experience of people entrusted with the manufacturing of construction products and types of construction according to the regional building codes corresponding to §17 chapter 5 of the model building code, it shall be observed that this knowledge and experience can also be proven by equivalent verifications of other member states of the European Union. If necessary, this also applies to equivalent verifications presented within the framework of the agreement on the European Economic Area (EEA) or other bilateral agreements.

3 The National Technical Approval does not replace the authorizations, approvals and certificates required by law for the execution of building projects.

4 The National Technical Approval is granted without prejudice to any third party rights, in particular to private property rights.

5 Irrespective of further regulations laid down in the “Specific Provisions”, the manufacturer and distributor of the aforementioned construction product shall make available copies of the National Technical Approval to the user and applier of the aforementioned construction product and shall point out that the National Technical Approval shall be available at the construction site. On request, copies of the National Technical Approval shall be submitted to all authorities involved.

6 Reproduction of this National Technical Approval shall be in full. However, partial reproduction can be made with the consent of the Deutsches Institut für Bautechnik. Texts and drawings used in advertising material shall not contradict the National Technical Approval. Translations of the National Technical Approval shall bear the notice “Translation of the German original version not authorized by the Deutsches Institut für Bautechnik”.

7 This National Technical Approval can be revoked at any time. The provisions of the National Technical Approval may be supplemented or modified subsequently, in particular if required by new technical findings.


Page 3 of 11 │ 07 September 2010

II SPECIFIC PROVISIONS

1 Construction product and intended use

The slab connection Halfen Insulated Connection HIT-HP / HIT-SP with compression shear bearings made of ultra high-strength fibre reinforced mortar is applied as a load-bearing thermally insulating connection element between 16 to 25 cm thick slab-like components made of steel reinforced concrete according to DIN 1045-1:2008-8 with a minimum strength class of C 20/25 and a bulk density of between 2000 kg/m³ and 2600 kg/m³ under predominantly static load. The Halfen Insulated Connection HIT-HP / HIT-SP with compression shear bearings (see Annex 1) consists of an 80 mm (HIT-HP) or 120 mm (HIT-SP) thick insulating layer made of mineral wool and of a statically effective system made of steel tension bars and compression shear bearings. The slab connection Halfen Insulated Connection HIT-HP / HIT-SP serves to absorb bending moments and shear forces. The forces are transmitted to the adjacent components by bond and surface pressure, respectively. The height-to-length ratio of the adjacent components should not exceed the ratio 1/3, unless a separate verification of the transfer of the occurring transverse tensile stresses is made.

2 Provisions for the construction product

2.1 Characteristics and composition

2.1.1 Dimensions and positions of the bars and compression shear bearings in the area of the insulating joint

The slab connection Halfen Insulated Connection HIT-HP / HIT-SP with compression shear bearings shall correspond to Annexes 1 to 7. The structural system in the area of the insulating joint has tension bars and compression shear bearings to transfer bending moments and shear forces. The compression shear bearings are made of ultra high-strength fibre reinforced mortar. The characteristics of the compression shear bearings are listed in a data sheet1.

In the insulating joint and on a length of at least 10 cm within the adjacent components, the tension bars consist of stainless reinforcing steel or stainless steel round bars which are connected to the ends of the tensions bars by flash butt welding. Within the adjacent components, the tension bars can also consist of stainless reinforcing steel exceeding a length of 10 cm.

The maximum permissible bar diameter of the tension bars is 20 mm. If stainless reinforcing steel with the material number 1.4362 is used (see chapter 2.1.2), the maximum permissible bar diameter of the tension bars in the insulating joint is 12 mm. The following boundary conditions shall be kept for the structural design of Halfen Insulated Connection HIT-HP / HIT-SP.

- Centre distance of the tension bars to the lateral component edge: ≥ 50 mm - Centre distance of the compression shear bearings to the lateral

component edge: ≥ 80 mm - Centre distance of the compression shear bearings: ≥ 75 mm

- Number of compression shear bearings per one-meter element: ≥ 4 - Number of tension bars per one-meter element ≥ 4 - Concrete cover of the compression shear bearings: ≥ 15 mm


Page 4 of 11 │ 07 September 2010 2.1.2 Materials

The following materials shall be applied:

Stainless steel: Ribbed reinforcing steel BSt 500 NR according to the National Technical Approval, material no. 1.4571 or 1.4362 or 1.4462

Stainless bar steel according to National Technical Approval No. Z-30.3-62, material no. 1.4571 or 1.4404 or 1.4362 or 1.4462, strength class S460 or S690 in connection with the mechanical properties and surface characteristics according to the data sheet1.

Reinforcing steel: Ribbed reinforcing steel BSt 500 S according to DIN 488-23 or BSt 500 WR/ KR according to the National Technical Approval

Compression shear bearings: Ultra high-strength fibre reinforced mortar according to the data

sheet1 Insulating joint: Thermally insulating fire protection material – mineral wool of

building material class A1 according to DIN 4102-14 or to Euro class A1 according to DIN EN 13501-15

Plastic material for

the casings: HDPE plastic and rigid PVC according to the data sheet1 The concrete of the adjacent components shall comply at least with C 20/25, at external components at least with C 25/30.

2.1.3 Fire behaviour

If Halfen Insulated Connections HIT-HP / HIT-SP are used to connect steel reinforced concrete slabs which have to meet a requirement concerning the fire resistance (corresponding fire resistance class according to DIN 4102-26 up to a maximum of F 120 – AB or REI 120 according to DIN EN 13501-27), the following boundary conditions shall be kept in any case:

- The components adjacent to the Halfen Insulating Connection HIT-HP / HIT-SP shall also meet the requirements of the respective fire resistance class according to DIN 4102-26 including DIN 4102-228 and DIN EN 13501-27, respectively.

- For the compression shear bearings the mix design according to the data sheet1 shall be applied.

- The concrete cover of the tension bars required according to DIN 1045-19 must be adhered to.

2.1.4 Thermal protection

The following verifications shall be made to assess the thermal protection: Für die Beurteilung des Wärmeschutzes sind folgende Nachweise zu führen:

a) Assessment of the risk of condensation water (falling below the temperature of condensation water) The calculational verification according to DIN 4108-210, chapter 6.2 shall be performed. The temperature factor in the most unfavourable place shall be verified for the minimum requirement fRsi ≥ 0.7 and θsi ≥ 12.6 corresponding to DIN EN ISO 1021111.

b) Consideration of the increased transmission heat loss according to DIN V 4108-612 If no specific verification is made, the slab connection may be regarded as thermally separated structure in the sense of DIN 4108 supplementary sheet 213. Therefore, the calculation may be conducted using a general surcharge due to thermal bridges for the total heat transmitting surface area of ∆UWB = 0.05 W/m²⋅K.


Page 5 of 11 │ 07 September 2010 2.1.5 Durability and corrosion protection

The durability requirements are specified in DIN 1045-19, chapter 6. The minimum concrete strength classes as well as the minimum concrete cover depending on the respective environmental conditions shall be adhered to in accordance with DIN 1045-19. The corrosion protection is ensured adhering to the concrete cover of the on-site reinforcement according to DIN 1045-19 and using the materials specified in this National Technical Approval.

2.2 Production, packing, transport, storage and marking

2.2.1 Production

The Halfen Insulated Connection HIT-HP / HIT-SP with tension bars and compression shear bearings is built from a modular system of plastic casings with integrated thermally insulating fire protection material. In order to be protected from moisture, the thermally insulating fire protection material is enclosed in the casing from all sides. The welded connections of the tension bars shall be made with the method of flash butt welding (welding process 24 according to DIN EN ISO 17660-114). The provisions of the National Technical Approval No. Z-30.3-62 in connection with DIN EN ISO 17660-114 are valid. The tension bars are arranged in the upper casings and secured in their positions; together they form an assembly unit.

The shaping casings of the compression shear bearings are made of HDPE. They are filled with fibre reinforced mortar and closed with a PE lid. The compression shear bearings are arranged in a casing made of rigid PVC and secured in their positions. They form an assembly unit. The dimensions of the compression shear bearings correspond to Annex 4.

In the built-in state, the upper casings are connected with the lower casings. 2.2.2 Packing and marking

Each packing unit of the slab connections Halfen Insulated Connection HIT-HP / HIT-SP shall be marked by the manufacturer in a durable and clearly legible way, e. g. with labels carrying the conformity marking (Ü-Mark) according to the conformity marking regulations of the German Laender. The marking is only allowed if the conditions according to chapter 2.3 “Verification of conformity” are fulfilled. In addition, the marking shall include the following information:

− Approval number (Z-15.7-293),

− Type designation,

− Thermal conductivity group of the insulating material according to DIN V 4108-415. Every single slab connection HIT-HP / HIT-SP shall be labelled with definite information concerning the assembly of the slab connections and the connecting reinforcement. The manufacturer shall enclose an installation guide in each delivery.

2.3 Verification of conformity

2.3.1 General

To attest the conformity of the construction product Halfen Insulated Connection HIT-HP / HIT-SP with the provisions of this National Technical Approval, a certificate of conformity shall be issued for each manufacturing plant based on the factory production control and on a continuous third-party control including initial tests of the construction product in accordance with the following provisions.

The manufacturer of the construction product shall involve an approved certification body to issue the certificate of conformity and an approved inspection body to perform the third-party control including the respective product testing. The certification body shall submit a copy of the certificate of conformity to the Deutsches Institut für Bautechnik.


Page 6 of 11 │ 07 September 2010 Furthermore, a copy of the initial test report shall be submitted to the Deutsches Institut für Bautechnik.

2.3.2 Factory production control

Each manufacturing plant shall implement and perform a factory production control. Factory production control comprises the continuous internal control of the production exercised by the manufacturer in order to ensure that the construction products manufactured by him are in conformity with the provisions of this National Technical Approval

The factory production control shall at least include the following measures:

− Examination of the raw material and the components:

Only building materials shall be used for the slab connection Halfen Insulated Connection HIT-HP / HIT-SP for which a verification of conformity has been made in accordance with the respective standards and approvals and which are marked accordingly or which are supervised and tested according to the provisions of this National Technical Approval.

− Controls and tests to be performed during production: The properties of the compression shear bearings are to be supervised and tested according to the quality control plan16.

− Verifications and tests to be performed on the finished construction product:

The dimensions of the construction product Halfen Insulated Connection HIT-HP / HIT-SP with compression shear bearings and the execution and after-treatment of the welded connections shall be examined on each Halfen Insulated Connection HIT-HP / HIT-SP.

The results of the factory production control shall be recorded and evaluated. The records shall include at least the following information:

− Identification of the construction product as well as the raw material and the components, respectively

− Type of control or test

− Date of production and testing of the construction product and the raw material or the components, respectively

− Results of controls and tests and, if applicable, comparison with requirements

− Signature of the person responsible for factory production control

The records shall be kept for at least five years and shall be submitted to the inspection body responsible for the third-party control. On request, these records shall be presented to the Deutsches Institut für Bautechnik and to the relevant supreme building authority. In case of unsatisfactory test results, the manufacturer shall immediately take the necessary measures to eliminate the deficiency. Construction products which do not comply with the requirements shall be handled in a way that they cannot be mistaken for products complying with the requirements. After elimination of the deficiency, the respective test shall be immediately repeated as far as this is technically feasible and necessary to verify that the deficiency has been eliminated.

2.3.3 Third-party control

The factory production control in each manufacturing plant shall be continuously verified by third-party control, at least however twice a year.

Within the framework of the third-party control, an initial test of the construction product Halfen Insulating Connection HIT-HP / HIT-SP with compression shear bearings shall be performed. The respective approved inspection body is responsible for sampling and testing.


Page 7 of 11 │ 07 September 2010 Within the framework of the verification of the factory production control, the compressive and flexural tensile strength of the ultra high-strength fibre reinforced mortar shall be determined on samples and compared to the requirements of the quality control plan16. Within the framework of the verification of the factory production control, the tension bars shall be tested and the results shall be evaluated and compared to the requirements of the quality control plan16. The results of certification and third-party control shall be kept for at least five years. On request, they shall be submitted by the certification body or the inspection body to the Deutsches Institut für Bautechnik and to the relevant supreme building authority.

3 Provisions for design and dimensioning

3.1 Design

Bending moments and shear forces may be transmitted with the slab connections Halfen Insulating Connection HIT-HP-MV / HIT-SP-MV. The minimum strength class of the steel reinforced normal-weight concrete components which have to be connected is C20/25, at external components it is C25/30. The connected slab shall be divided by joints which are installed in order to reduce the thermal stress in accordance with chapter 4. If not stated otherwise in the following, DIN 1045-19 is valid. The stresses occurring in the slab are locally transmitted by the tension bars and compression shear bearings in the joint and transferred into the connected slabs across a force transfer area. The static verification of the transfer of the transmitted tension bar forces shall be performed. The verification of the force transmission between compression shear bearing and adjacent concrete shall be performed according to Annex 5.

By adhering to the provisions of this National Technical Approval, the strain state deviating from a monolithic concrete construction is limited to the joint area as well as to the adjacent edges when slab connections are used. The maximum distance of the tensile reinforcement according to DIN 1045-19, chapter 13.3.2 (4) shall be adhered to. At least four tension bars and at least four compression shear bearings shall be arranged per one-meter element of HIT-HP / HIT-SP. The clearance between the compression shear bearings should not exceed 25 cm. In individual cases, the clearance of the tension bars and compression shear bearings may amount to up to 30 cm also at thinner slabs if it is ensured that four compression shear bearings and four tension bars are arranged per one-meter element. At a distance h from the joint edge the undisturbed strain state may be assumed. Variable moments and shear forces along a connected edge shall be taken into account at the design. The slab connections are not suited for the locally limited transfer of torsional moments which are required to create the balance. Small axial forces resulting from restraint in the flange bars (related to the strut-and-tie model) which occur at the end of the line supports e. g. next to free edges or expansion joints may be neglected in the calculation. Restraint axial forces in the direction of the bars of the slab connection shall be eliminated (example see Annex 6).

If the main slabs which are to be connected to the slab connections are precast elements, an in-situ concrete strip with a width of at least 10 cm according to Annex 7 shall be cast between the slab connection and the element slab.


Page 8 of 11 │ 07 September 2010 3.2 Dimensioning

3.2.1 General

The static verification shall be made in each individual case. In doing so type-tested dimensioning tables may be used.

The strut-and-tie model according to Annex 5 shall be the basis to determine the internal force variables and to place the reinforcement. For the dimensioning of Halfen Insulated Connection HIT-HP-MV / HIT-SP-MV the internal force variables MEd and VEd shall be applied in the design section according to Annex 5. The calculation of the internal force variables may only be made using linear elastic methods. Methods of relocation, of plastic theory and non-linear methods may not be applied. DIN 1045-19 supplemented by the provisions of this National Technical Approval is valid in the force transfer area of the bars into the concrete on both sides of the insulating layer and in the adjacent steel reinforced concrete area.

The compression shear bearings and tension bars shall be dimensioned for the forces calculated according to the design model for HIT-HP / HIT-SP according to Annex 5. The simplified assumption of a rigid support of the supporting building element is only permissible if the stiffness ratios of the connected and supporting building element are described with sufficient accuracy by this assumption. Otherwise, the linear variable moments and shear forces along the slab edge shall be considered (see chapter 3.1). The design of the connected steel reinforced concrete slabs is made according to DIN 1045-19 for the existing internal force variables MEd and VEd.

An edge frame according to chapter 4.2 shall be arranged at the front surfaces which are facing the insulation of the building elements which are to be connected. If the design section is situated outside the area of bearing, a suspension reinforcement shall be placed which shall be designed to transmit the total acting shear force VEd taking into account the edge frame according to chapter 4.2.

3.2.2 Special provisions in the area of the insulating joint and in the force transfer area for the verifications in the ultimate limit state

3.2.2.1 Verification of the compression shear bearings The verification of the transferable compressive force of the compression shear bearings as well as the transfer of the compressive stresses into the adjacent concrete is performed within the design model of HIT-HP / HIT-SP according to Annex 5. Without further verification, a maximum design value of the transferable shear force of 16 kN per compression shear bearing element may be applied. The tensile splitting forces occurring in the loaded area of the adjacent slabs shall be verified according to Annex 5 and a corresponding reinforcement shall be calculated. The edge frame according to chapter 4.2 may be taken into the calculation.

3.2.2.2 Verification of the tension bars

The verification shall be performed in compliance with DIN 1045-19 or according to the National Technical Approval No. Z-30.3-62. The design shall be based on the strengths and partial safety factors contained in table 1. Higher values may not be taken into the calculation, even if higher strength classes are used. The static verification of the load bearing capacity of the welded connection between reinforcing steel and stainless reinforcing steel or round steel, respectively, shall not be made separately. This applies also when the diameter combinations according to Annex 3 are applied.


Page 9 of 11 │ 07 September 2010 Table 1: Yield stresses and partial safety factors of the bars used

Bar made of: Characteristic yield stress

in [N/mm²] Partial safety factor

BSt 500 S, WR, KR 500 1.15

BSt 500 NR 500 1.15

Stainless round steel according to Z-30.3-6 or

data sheet1 (S460) 500 1.10

Stainless round steel according to Z-30.3-6 or

data sheet1 (S690) 690 1.10

3.2.2.3 Verification against concrete edge failure The verification against concrete edge failure shall be performed in accordance with Annex 5 of this National Technical Approval. The significant action results from the acting shear force VEd and the compressive force calculated according to the design model of HIT-HP / HIT-SP.

3.2.2.4 Verification of fatigue resulting from temperature differences Stress verifications and verifications of fatigue strength for axial forces and bar deflection resulting from deformation due to temperature differences of the building elements which are to be connected in the sense of chapter 3.3.11 of the National Technical Approval No. Z-30.3-62 must not be performed.

These verifications are considered to be performed within the framework of the approval procedure by limiting the joint distances in the external building elements according to chapter 4.1.

3.2.2.5 Provisions for the verifications in the force transfer area of the concrete components

DIN 1045-19, chapter 10.3 is valid for the verification of the shear load bearing capacity of the slabs outside the joint and loaded area of the element. Especially the design value of the shear load bearing capacity of the slabs without shear reinforcement VRd,ct is based on a shear force which is evenly distributed across the concrete compression zone. Therefore, the elements shall be installed at equal distances.

No less than four tension bars and compression shear bearings shall be arranged per one-meter element of HIT-HP / HIT-SP and the single spacings shall not exceed 300 mm.

3.2.2.6 Anchorage lengths and overlap joints of the bars running through the insulating joints

The tension bars of the slab connection HIT-HP / HIT-SP shall be lapped with the tensile reinforcement of the adjacent slabs.

In addition to the shear reinforcement according to DIN 1045-19, chapter 12.6.3, a shear reinforcement according to chapter 12.8.3 shall be placed and anchored at the edge of the cross section to transfer the occurring transverse tensile forces.

In the overlap area of the HIT elements, a reduction of the on-site tensile reinforcement is not permissible.


Page 10 of 11 │ 07 September 2010 3.2.3 Special provisions in the area of the insulating joint and the force transfer area for

the verification in the serviceability limit state

3.2.3.1 Limitation of the crack widths DIN 1045-19, chapter 11.2.1 is valid. An additional verification shall not be performed at the front surface of the joints as well as in the force transfer area if the provisions of this National Technical Approval are adhered to.

3.2.3.2 Limitation of the deformations

When the deflection is calculated, the elastic deformations of the slab connections and of the adjacent slab concrete as well as the thermal expansions shall be taken into account. The verification of the deformation is made under the quasi-permanent load combination according to Annex 6.

4 Provisions for the execution

4.1 Centre and joint distances

The centre distance of the tension bars or compression shear bearings to the free edge or the expansion joint shall at least be 5 cm (tension bars) or 8 cm (compression shear bearings), it shall however not exceed half the permissible maximum distance. To limit the thermal stress expansion joints shall be installed perpendicular to the insulating layer in the external concrete components. The joint distance is listed in the below table. Table 2: Permissible joint distances in [m]

Tension bar diameter dS in the insulating joint [mm] Thickness of the insulating joint

[mm] ≤ 12 14 16 20

80 (HIT-HP) 120 (HIT-SP) 11.3 m 10.1 m 9.2 m 8.0 m

4.2 Structural design

The minimum concrete cover according to DIN 1045-19 shall be adhered to. This applies to the tension bars or to existing assembly reinforcement. The reinforcement of the concrete structure which is connected to the slab connections shall be placed close to the insulating layer considering the required concrete cover according to DIN 1045-19.

As a rule, the transverse bars of the upper connecting reinforcement shall lie on top of the longitudinal bars of the slab connections. This may be different at bars with a nominal diameter smaller than 16 mm if, under the respective existing in-situ conditions, the transverse bars can also be installed directly below the longitudinal bars of the slab connections and if this is supervised e. g. by the technical site manager. The corresponding required installation steps shall be specified in the installation guide. The front surfaces of the components which are to be connected shall be equipped with an edge frame according to DIN 1045-19. U-bars of at least dS ≥ 6 mm, s ≤ 25 cm and dS ≥ 8 mm per 2 longitudinal bars shall be arranged at the connected slabs parallel to the insulating joint.

The U-bars of the edge frame at the component sides which run parallel to the slab connections shall overlap the tension bars. It shall be observed that there is a sufficient distance between slab connection and element slabs (see chapter 3.1 and Annex 7).

4.3 Provisions for the use if fire protection is required

If elements are used to connect steel reinforced concrete components (slabs) which require fire protecting measures, the provisions of chapter 2.1.3 shall be adhered to.


Page 11 of 11 │ 07 September 2010 4.4 Provisions for the execution

Casings which serve to protect the insulating layer according to chapter 2.2.1 shall not be shortened for installation purposes. Casings which were damaged or where a shortening could not be avoided for the installation shall be closed in a way that humidity cannot reach the mineral wool. This installation step shall be supervised by the site manager.

_________________________________________

1 The data sheet is deposited at the Deutsches Institut für Bautechnik and the inspection body responsible for

third-party control. 2 Zulassung Nr. Z-30.3-6 Erzeugnisse, Verbindungsmittel und Bauteile aus nichtrostenden Stählen vom 20.

April 2009 3 DIN 488-2:1986-06 Betonstahl – Teil 2: Betonstabstahl, Maße und Gewichte 4 DIN 4102-1:1998-05 Brandverhalten von Baustoffen und Bauteilen – Teil 1: Baustoffe, Begriffe,

Anforderungen und Prüfungen 5 DIN EN 13501-1:2002-06 Klassifizierung von Bauprodukten zu ihrem Brandverhalten – Teil 1:

Klassifizierung mit den Ergebnissen aus den Prüfungen zum Brandverhalten von Bauprodukten; Deutsche Fassung EN 13501-1:2002

6 DIN 4102-2:1977-09 Brandverhalten von Baustoffen und Bauteilen; Bauteile, Begriffe, Anforderungen und Prüfungen

7 DIN EN 13501-2:2003-12 Klassifizierung von Bauprodukten zu ihrem Brandverhalten – Teil 2: Klassifizierung mit den Ergebnissen aus den Feuerwiderstandsprüfungen, mit Ausnahme von Lüftungsanlagen; Deutsche Fassung EN 13501-2:2003

8 DIN 4102-22:2004-11 Anwendungsnorm zu DIN 4102-4 auf der Bemessungsbasis von Teilsicherheitsbeiwerten

9 DIN 1045-1:2008-08 Tragwerke aus Beton, Stahlbeton und Spannbeton – Teil 1: Bemessung und Konstruktion

10 DIN 4108-2:2003-07 Wärmeschutz und Energie-Einsparung in Gebäuden – Teil 2: Mindestanforderungen an den Wärmeschutz

11 DIN EN ISO 10211:2008-04 Wärmebrücken im Hochbau – Wärmeströme und Oberflächentemperaturen – Detaillierte Berechnungen (ISO 10211:2007); Deutsche Fassung EN ISO 10211:2007

12 DIN V 4108-6:2003-06 Wärmeschutz und Energie–Einsparung in Gebäuden – Teil 6: Berechnung des Jahresheizwärme- und des Jahresheizenergiebedarfs

13 DIN 4108 Bbl. 2:2004-01 Wärmeschutz und Energie-Einsparung in Gebäuden – Wärmebrücken – Planungs- und Ausführungsbeispiele

14 DIN EN ISO 17660-1:2006-12 Schweißen – Schweißen von Betonstahl – Teil 1: Tragende Schweiß-verbindungen (ISO 15660-1:2006), Deutsche Fassung EN ISO 17660-1:2006

15 DIN V 4108-4:2007-06 Wärmeschutz und Energie-Einsparung in Gebäuden – Teil 4: Wärme- und feuchteschutztechnische Bemessungswerte + A1:2006

16 The quality control plan is deposited at the Deutsches Institut für Bautechnik and the inspection body responsible for third-party control.

Figure 1: Halfen Insulated Connection HIT-HP/SP-MV F 120/REI 120 in the built-in state



17) DIN 1045-19, chapter 6 also applies for the minimum concrete strength class and the minimum concrete cover

Halfen Insulated Connection

HIT-HP/SP-MV with

compression shear bearing Insulating material thickness 80/120mm

built-in state

H a l f e n G m b H Liebigstr. 14

D – 40 764 Langenfeld / Rhld. Telefon + 49 – (0) 2173 – 970 (0) Fax + 49 – (0) 2173 – 970 (420)

Annex 1, page 1/2

Translation of the German original version not authorized by the Deutsches Institut für Bautechnik Approval No. Z-15.7-293 dated 07 September 2010

Figure 4: Halfen Insulated Connection HIT-HP/SP MV F 120/REI 120 in the built-in state (example of indirect support)

Figure 5: Halfen Insulated Connection HIT-HP/SP MV F 120/ REI120 in the built-in state (example of direct support)


HIT-HP/SP-MV with


built-in state



Annex 1, page 2/2


Figure 6: Halfen Insulated Connection HIT-HP/SP MV F 120/REI 120 – separated execution variation

Bild 7: Halfen Insulated Connection HIT-HP/SP MV F 120/REI 120 – completed execution variation


HIT-HP/SP-MV with


delivery variations



Annex 2


a) Execution with stainless round steel S46018) or S69018) with BSt 500 S

b) Execution with stainless reinforcing steel BSt 500 NR with BSt 500 S

c) Execution with stainless reinforcing steel BSt 500 NR

Figure 8: Tension bar variations Halfen Insulated Connection HIT-HP/SP F 120/REI 120

ds1

(BSt 500 S, NR)

ds2 (stainless round

steel S 69018))

d2 (stainless round

steel S 46018), BSt 500 NR)

6 mm - 6 mm 8 mm ≥ 7 mm 8 mm

10 mm ≥ 8.5 mm 10 mm 12 mm ≥ 10.5 mm 12 mm 14 mm - 14 mm 16 mm - 16 mm

20 mm - 20 mm Table A1: Diameter compinations of HIT-HP/SP tension bars 18) Strength properties according to 3.2.2.2, Table 1




HIT-HP/SP-MV with


tension bar variations

Annex 3


Figure 9: Dimensions of compression shear bearing HIT-HP




HIT-HP with

compression shear bearing Insulating material thickness 80 mm

compression shear bearing

Annex 4, page 1/2


Figure 10: Dimensions compression shear bearing HIT-SP




HIT-SP with

compression shear bearing Insulating material thickness 120 mm

compression shear bearing

Annex 4, page 2/2


Strut-and-tie model of Halfen Insulated Connection HIT-HP/SP MV

Figure 11: Strut-and-tie model and design section HIT-HP/SP MV with compression shear bearings

Distance between design section and component edge:

ar = 96 mm – 0.1 ⋅ d (ar ≈ 80 mm)

d = h – cnom – ds1,HIT/2 effective depth HIT-HP/SP MV in [mm]

In all application cases a ratio between bending moment MEd and shear force VEd of at

least 15.0V

M

Ed

Ed≥ shall be adhered to.

Determination of actions

QkQGkGd EEE ⋅γ+⋅γ=

Determination of internal forces resulting from moment / shear force interaction

Concrete compression zone height of compression shear bearings [units in N and mm]:

⋅β−−

≤

⋅β−−−−

=

CSBV,2c

Ed2

CSBM,1c

Ed

c

n

|V|5.415.41

]mm[83n

|M|)²15d()15d(

Maxx

Concrete compressive force Fcd (negative) and steel tensile force Fsd (positive):

-Fcd = Fsd = 2 ⋅ xc ⋅ nCSB ⋅ βc1,M [units in N and mm]

where nCSB number of compression shear bearings

βc1,M and βc2,V according to Table A2




HIT-HP/SP MV with


design model

Annex 5, page 1/3


HIT unit HIT-HP/SP MV HIT-HP MV HIT-SP MV

Concrete strength class βc1,M [N/mm] βc2,V [N/mm²] βc2,V [N/mm²]

C 20/25 680 12.5 9.1

≥ C25/30 797 14.5 10.6

Table A2: Parameters for the design of HIT-HP/SP MV with compression shear bearings

Maximum transferable shear force VRd in the design section:

−⋅

⋅

=

CSB

ccd

CSB

Rd

a

)xmm83(|F|

]kN[16nMinV

where nCSB number of compression shear bearings

aCSB = 110 mm for HIT-HP MV = 150 mm for HIT-SP MV Verifications in the ultimate limit state

Moment load: (MEd ≤ MRd)

As,req = yd

sd

f

F ≤ As,prov

Shear load:

|VEd| ≤ VRd

When designing the adjacent slabs, the following loads shall be considered:

Main slab:

⋅=

1cd

Edslab,Ed zF

MMaxM in the design section

where z1 = d – ½ ⋅ xc – 15 mm

VEd in the design section

Balcony slab:

CSBEdslab,Edbalcony,Ed a|V|MM ⋅−=

where

aCSB = 110 mm for HIT-HP MV = 150 mm for HIT-SP MV

VEd in the design section




HIT-HP/SP MV with


design model

Annex 5, page 2/3


Verification of concrete edge failure

Actions in the design section:

Fc,Ed = 0.25 ⋅ |Fcd| + |VEd|

Bearing resistance:

( ) ( ) eff4

1

ckc

cRd,c bfmm36

aF ⋅⋅⋅

γ=

where:

( ) unitCSBeff bmm137nb ≤⋅=

ac = 5.5 for HIT-HP MV

= 5.0 for HIT-SP MV

nCSB number of compression shear bearings per unit bunit width of Halfen Insulated Connection HIT-HP/SP MV in [mm] fck characteristic zylinder compressive strength of the concrete in [N/mm²] γc = 1.5 partial safety factor of concrete Verification: Fc,Ed ≤ Fc,Rd

Design of the tensile splitting reinforcement - horizontal tensile splitting reinforcement (2 longitudinal bars, ds ≥ 8 mm, on each side)

−⋅

⋅=

e

mm301

n4

|F|F

CSB

cdh,Sp

where:

≤⋅

= mm 120[mm] in edge component and CSB between distance centre

[mm] in bearings shear ncompressio the of distance centre

e2

ee

edge,CSB

CSBmax,

- vertical tensile splitting reinforcement19) (U-bars ds ≥ 6 mm, s ≤ 25 cm)

+−⋅=

mm30x

x1

4

|F|F

c

ccdv,Sp

required tensile splitting reinforcement

yd

v,h;Sps f

FA = where fyd ≤ 435 N/mm²

19) If the design section is situated outside the area of support (indirect support),

an additional vertical suspension reinforcement according to 3.2.1 shall be placed.




HIT-HP/SP MV with


design model

Annex 5, page 3/3


external component

main direction of movement

point of zero displacement

max vh max vh

Sjoint

Figure 12: Assembly situation with supports on opposite sides

design section

MEd

leff,t

z 1

VEd

∆ lt

-∆ ld

αjoint

½ ⋅ leff,d2 ½ ⋅ leff,d2 leff,d1

Figure 13: Model to determine the bending deformations in the joint

Angle of rotation in the joint: 1

dt

1

2d1dtintjo z

ll

z

llltan

∆−∆=

∆−∆−∆=α

Internal lever arm HIT-HP/SP MV: mm 152

xdz c

1 −−=

Tension bar strain for ds1 = ds2: t,eff

s

t,st,efftt l

Ell ⋅

σ=⋅ε=∆

Tension bar strain for ds1 > ds2: 2ds,t,eff2ds,t1ds,t,eff1ds,tt lll ⋅ε+⋅ε=∆

2ds,t,eff

2ds,s

2ds,t,s1ds,t,eff

1ds,s

1ds,t,s lE

lE

⋅σ

+⋅σ

=

where: leff,t,ds1 = 20 · ds1 and leff,t,ds2 = 280 mm for HIT-HP MV leff,t,ds1 = 20 · ds1 and leff,t,ds2 = 320 mm for HIT-SP MV




HIT-HP/SP MV with


assembly situation

Annex 6, page 1/2


Compression of the conpression shear bearing: 111 d,effdd ll ⋅ε−=∆

Compression of the adjacent slab concrete:

cm

d,ld,effdd E

ll 2

222

α−=⋅ε−=∆

∆ld according to Table A3, Ecm according to DIN 1045-19

Concrete strength class C20/25 C25/30 C30/37

∆ld [mm] for HIT-HP MV 0.228 0.258 0.251

∆ld [mm] for HIT-SP MV 0.276 0.315 0.308

Table A3: Coefficients ∆ld to calculate the deformation of HIT-HP/SP MV with compression shear bearings

MEd

leff,t

z 1

VEd

10 ⋅ ds1 10 ⋅ ds1 80 (HP) 120 (SP)


[mm]

Figure 14: leff for reinforcing steel BSt 500 NR

MEd

leff,t

VEd

10 ⋅ ds1 10 ⋅ ds1


100 mm 100 mm

SN

z 1

SN

80 (HP) 120 (SP)

[mm]

leff,t (ds2) leff,t (ds1) leff,t (ds1)

Figure 15: leff for stainless round steel S 460 and 690 according to data sheet 1




HIT-HP/SP MV with


determination leff

Annex 6, page 2/2


Figure 16: Example of the connection HIT-HP/SP MV F 120/REI 120 to element slabs with statically effective in-situ concrete layer


Figure 18: Example of the connection HIT-HP/SP MV F 120/REI 120 to element slabs

with statically effective in-situ concrete layer

20) DIN 1045-19, chapter 6 is also valid for the minimum concrete strength class and cover 21) Transport and position protecting device for the assembly state in the form of a U-shaped holding

clamp ∅ 2mm made of cold drawn steel S235 with a length of about 100 mm and a width of about 40 mm. The holding clamp is connected to the plastic casing of the compression shear bearing.

22) The U-bars of the edge frame according to chapter 4.2 or of the vertical tensile splitting reinforcement according to chapter 3.2.2.1 shall be directly placed either on the element slabs or, preferably, be integrated into the element slabs at the height of the main reinforcement of the element slabs.

23) to 22) alternative design by bending up the lower leg of the U-bar 24) to 22) alternative design by placing an edge beam instead of the U-bars

[mm]

Annex 7, page 1/2


[mm]

[mm]




HIT-HP/SP MV with


connection element slabs

Figure 19: Example of the connection HIT-HP/SP MV F 120/REI 120 to element slabs

with statically effective in-situ concrete layer



25) The U-bars of the edge frame according to 4.2 or of the vertical tensile splitting reinforcement according to chapter 3.2.2.1 shall be placed either directly on the element slabs or, preferably, be integrated into the element slabs at the height of the main reinforcement of the element slabs

26) to 22) alternative design by bending up the lower leg of the U-bar 27) to 22) alternative design by placing an edge beam istead of the U-bars




HIT-HP/SP MV with


connection element slabs

[mm]

[mm]

[mm]

Annex 7, page 2/2


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NOTES REGARDING THIS CATALOGUETechnical and design changes reserved. The information in this publication is based on state-of-the-art technology at the time of publication. We reserve the right to make technical and design changes at any time. HALFEN GmbH shall not accept liability for the accuracy of the information in this publication or for any printing errors.

The HALFEN GmbH subsidiaries in Germany, France, the Netherlands, Austria, Poland, Switzerland and the Czech Republic are Quality Management certified according to ISO 9001:2015, Certificate no. 202384-2016-AQ-GER-DAkkS.

Furthermore HALFEN is represented with sales offices and distributors worldwide. Please contact us: www.halfen.com

CONTACT HALFEN WORLDWIDEHALFEN is represented by subsidiaries in the following countries, please contact us:

www.dnvgl.com

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Phone: +43 - 1 - 259 6770 E-Mail: [email protected]: www.halfen.at

Fax: +43 - 1 - 259 - 6770 99

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Phone: +32 - 3 - 658 07 20E-Mail: [email protected]: www.halfen.be

Fax: +32 - 3 - 658 15 33

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Phone: +86 - 10 5907 3200E-Mail: [email protected]: www.halfen.cn

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Phone: +49 - 2173 - 970 - 0E-Mail: [email protected]: www.halfen.de

Fax: +49 - 2173 - 970 225

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Phone: +39 - 035 - 0760711E-Mail: [email protected]: www.halfen.it

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Fax: +48 - 61 - 622 14 15

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Phone: +34 916 669 181E-Mail: [email protected]: www.halfen.es

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HALFEN Ltd.A1/A2 Portland CloseHoughton Regis LU5 5AW

Phone: +44 - 1582 - 47 03 00E-Mail: [email protected]: www.halfen.co.uk

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Phone: +1 800.423.91 40E-Mail: [email protected]: www.halfenusa.com

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For countries not listed HALFEN International

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Phone: +49 - 2173 - 970 - 0 E-Mail: [email protected]: www.halfen.com

Fax: +49 - 2173 - 970 - 849

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