from: 1 st April 2017 to: 1 st April 2018

Transcription

1 Decision Approval office for building components and building types Structural safety control authority A public-law institution jointly financed by the Federal government and states Member of EOTA, UEAtc and the WFTAO on the amendment of the validity period of the General Building Approval of 28 th June 2012 Date: Reference: I /16 Approval number: Z Applicant: JORDAHL GmbH Nobelstraße Berlin Validity period from: 1 st April 2017 to: 1 st April 2018 Subject of approval: Jordahl anchor channels Type JZA 41/22 This decision extends the validity period of the General Building Approval no. Z of 28 th June 2012, modified by the decision of 14th February 2013 and extended by the decision of 15 th December This decision comprises 1 page. It is only valid in conjunction with the abovementioned General Building Approval and may only be used together with this. Note: Translation of the German original version not checked by the Deutsches Institut für Bautechnik. Every page of the German original bears the official stamp of the Deutsches Institut für Bautechnik. DIBt I Kolonnenstraße 30 BI D Berlin I Tel.: I Fax: I dibt@dibt.de I

2 Decision Approval office for building components and building types Structural safety control authority A public-law institution jointly financed by the Federal government and states Member of EOTA, UEAtc and the WFTAO on the amendment and extension of the validity period of the General Building Approval of 28th June 2012 Date: Reference: /15 Approval number: Z Applicant: JORDAHL GmbH Nobelstraße Berlin Validity period from: 15th December 2015 to: 1st April 2017 Subject of approval: Jordahl anchor channels - Type JZA This decision modifies the General Building Approval and extends the validity period of the General Building Approval no. Z of 28th June 2012 modified by the decision of 14th February This decision comprises 2 pages. It is only valid in conjunction with the above-mentioned General Building Approval and may only be used together with this. Note: Translation of the German original version not checked by the Deutsches Institut für Bautechnik Every page of the German original bears the official stamp of the Deutsches Institut für Bautechnik DIBt I Kolonnenstraße 30 BI D Berlin I Tel.: I Fax: I dibt@dibt.de I

3 Decision on the amendment and extension of the validity period of the General Building Approval No. Z Page 2 of 2 15th December 2015 RE: I GENERAL PROVISIONS With the General Building Approval, the usability and applicability of the subject of the approval is verified within the scope of state building regulations. 2 If requirements for the particular expertise and experience of the persons entrusted with the production of building components and building types are stipulated in the General Building Approval according to state regulations that are in line with 17 Section 5 of the Model Building Regulation, it must be ensured that this expertise and experience can be verified by equivalent evidence from other Member States of the European Union. Where appropriate, this also applies to equivalent evidence presented as part of the Agreement on the European Economic Area (EEA) or other bilateral agreements. 3 The General Building Approval does not replace the legally prescribed approvals, permits and certificates for the execution of construction projects. 4 The General Building Approval is issued without prejudice to any rights of third parties, especially private protection rights. 5 Without prejudice to further regulations in the Special Provisions, manufacturers and distributors of the subject of approval must provide the user of the subject of approval with copies of the General Building Approval and point out that the General Building Approval must be present at the application site. On request, the relevant authorities should be provided with copies of the General Building Approval. 6 The General Building Approval may only be reproduced in its entirety. Publication of excerpts requires the consent of the Deutsches Institut für Bautechnik (German Institute for Structural Engineering). Texts and drawings of advertising material must not contradict the General Building Approval. In the event of differences between the German version of the General Building Approval and its English translation, the German version takes precedence. Translations of the General Building Approval must contain the notice Translation of the original German version not checked by the Deutsches Institut für Bautechnik. 7 The General Building Approval is revocable. The provisions of the General Building Approval may be subsequently supplemented and amended, in particular if new technical findings make this necessary. Andreas Kummerow Head of division Z /15

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5 Approval office for building components and building types Structural safety control authority A public agency jointly financed by the Federal government and states Member of EOTA of UEAtc and the WFTAO General Building Approval Date: Reference: I /12 Approval number: Z Applicant: Deutsche Kahneisen Gesellschaft mbh Nobelstraße 51/ Berlin Validity period from: 28th June 2012 to: 21st December 2015 Subject of approval: Jordahl anchor channels - Type JZA The above-mentioned subject of approval is hereby technically approved. This General Building Approval is comprised of seven pages and six appendices. This General Building Approval replaces the General Building Approval No. Z of 23rd January 2004, amended and extended by the decision of 21st December DIBt I Kolonnenstraße 30 BI D Berlin I Tel.: I Fax: I dibt@dibt.de I

6 General Building Approval No. Z Page 2 of 7 I 28th June 2012 GENERAL PROVISIONS With the General Building Approval, the usability and applicability of the subject of the approval is verified within the scope of state building regulations. 2 If requirements for the particular expertise and experience of the persons entrusted with the production of building components and building types are stipulated in the General Building Approval according to state regulations that are in line with 17 Section 5 of the Model Building Regulation, it must be ensured that this expertise and experience can be verified by equivalent evidence from other Member States of the European Union. Where appropriate, this also applies to equivalent evidence presented as part of the Agreement on the European Economic Area (EEA) or other bilateral agreements. 3 The General Building Approval does not replace the legally prescribed approvals, permits and certificates for the execution of construction projects. 4 The General Building Approval is issued without prejudice to any rights of third parties, especially private protection rights. 5 Without prejudice to further regulations in the Special Provisions, manufacturers and distributors of the subject of approval must provide the user of the subject of approval with copies of the General Building Approval and point out that the General Building Approval must be present at the application site. On request, the relevant authorities should be provided with copies of the General Building Approval. 6 The General Building Approval may only be reproduced in its entirety. Publication of excerpts requires the consent of the Deutsches Institut für Bautechnik. Texts and drawings of advertising material must not contradict the General Building Approval. Translations of the General Building Approval must contain the notice "Translation of the original German version not checked by the Deutsches Institut für Bautechnik". 7 The General Building Approval is revocable. The provisions of the General Building Approval may be subsequently supplemented and amended, in particular if new technical findings make this necessary. Z /12

7 General Building Approval No. Z Page 3 of 7 I 28th June 2012 II SPECIAL PROVISIONS 1 Subject of approval and area of application 1.1 Subject of approval The type JZA Jordahl anchor channel made from steel and stainless steel consists of a C-shaped channel with toothing and with at least two welded anchors or clamped compression anchors on the back of the profile and associated hammer head T-bolts with toothing (toothed T-bolt JZS). The anchor channel is set flush with the surface in concrete. Any construction parts can be fastened to the anchor channel. In Appendix 1, the installed anchor channel is shown. 1.2 Area of application The anchor channel may be used for anchoring under predominantly static loading in reinforced or unreinforced normal weight concrete of strength class C20/25 at minimum according to DIN EN 206-1: Concrete; Part 1: Specification, performance, production and conformity. The anchor channel may only be used if no requirements are stipulated regarding the fire resistance period of the entire construction including the anchor channels. For anchoring in the tension zone of the concrete generated from load stresses or when utilising the minimum distances of the anchor channels, the local shear load stresses occurring due to explosive effect must be absorbed by additional reinforcement, unless structural measures or other favourable effects (e.g. shear pressure) prevent concrete from splitting. The areas of application of the anchor channels (channel, anchor, T-bolt, nut and washer) with regard to corrosion are to be specified subject to the selected materials in Appendix 4, Table 4. A galvanised anchor channel may only be in conjunction with reinforcement if the temperature at the contact points between the reinforcement and the galvanised steel elements does not exceed 40 C. In pre-stressed concrete components, the distance of a galvanised anchor channel must be at least 2 cm from the cladding tubes of the pre-stressed element or the pre-stressed wire with immediate bonding. 2 Provisions for the building component 2.1 Properties and composition The structural parts of the anchor channels (channel, anchor, T-bolt, nut and washer) must correspond with the drawings and specifications in the appendices. The material properties, dimensions and tolerances of the anchor channels and T- bolts not specified in this General Building Approval must correspond with the specifications provided by the Deutsches Institut für Bautechnik, the certification authority and the external control authority. Z /12

8 General Building Approval No. Z Page 4 of 7 I 28th June Production and marking Production (connection of channel/anchor) The production of the connections (welding, clamping) between the anchor and the channel has to take place at the factory. For welding the weld-on anchors, the gas-shielded welding MAG/MAGM (process 135 according to DIN EN ISO 4063: ) must be used. For connections between stainless steels and low-alloy construction steels, the special provisions of the approval notice Products, connection means and components made of stainless steels (App. No. Z ) must be adhered to. The weld seams are to be formed according to Appendix 2. Depending on the requirements defined for the construction, the regulations according to DIN : or according to DIN EN : apply, in coordination with the structural engineer and the approval authority, for the design of the weld seams. The compression anchors are inserted and pressed in the factory through a prefabricated hole in the back of the channel Marking Every delivery note of the anchor channels and T-bolts must be marked by the manufacturer with the conformity mark (Ü mark) in accordance with the conformity mark regulations of the federal states. In addition, the identifying mark, the approval number and the full name of the anchor channels and T-bolts are to be specified on the delivery note. The marking may only be made if the conditions of Section 2.3 are met. The anchor channel is named after the production type and the rounded profile dimensions JZA K 41/22 (cold-formed/width/height). The hammerhead toothed T-bolt is named after the thread size, e.g. JZS M12x40. Each anchor channel must be marked in accordance with Appendix 4. The T-bolt is to be marked with the identifying mark and the material abbreviation according to Appendix 3. The marking of the hexagon nuts and washers from the materials and is specified in Appendix Declaration of conformity General The confirmation of conformity of the channels and T-bolts with the provisions of this General Building Approval must be carried out for each production plant with a declaration of conformity based on a factory production control and a regular external monitoring including an initial test of the channels and T-bolts in accordance with the following provisions. For the issuance of the declaration of conformity and the external monitoring including the product inspections to be carried out, the manufacturer of the channels and T-bolts has to consult with a recognised certification body and an approved monitoring body. The manufacturer shall hand over the statement that a declaration of conformity is issued by marking the building component with the conformity mark (Ü mark) with a note on the intended use. The certification authority has to provide the Deutsches Institut für Bautechnik with a copy of the declaration of conformity they have issued, for information Factory production control A production control system is to be set up and operated in each production plant. Factory production control is understood as the continuous monitoring of production that is established by the manufacturer, with which they ensure that the building components the company manufactures comply with the provisions of this General Building Approval. Z /12

9 General Building Approval No. Z Page 5 of 7 I 28th June 2012 For the scope, nature and frequency of factory production control, the test plan provided by the Deutsches Institut für Bautechnik and the external monitoring body shall prevail. The results of factory production control are to be recorded and evaluated. The records must contain at least the following information: Designation of structural product or raw material and components Type of control or testing Date of manufacture and testing of the building component or raw material or components Result of the control and tests and, if applicable, comparison with the requirements Signature of the factory production control managers The records must be kept for at least five years and submitted to the appointed external monitoring body. They are presented to the Deutsches Institut für Bautechnik and to the responsible supreme construction supervision authority on demand External monitoring The production control system is to be checked in each production plant on a regular basis, but at least twice a year. As part of the external monitoring, an initial test of the anchor channels and T-bolts must be carried out and samples must be taken for random testing. The sampling and tests are subject to the respective accredited monitoring body. For the scope, nature and frequency of the external monitoring, the control plan provided by the Deutsches Institut für Bautechnik shall prevail. The results of the certification and external monitoring must be kept for at least five years. Upon demand, they have to be presented to the Deutsches Institut für Bautechnik and to the responsible supreme construction supervision authority by the certification body or by the monitoring body. 3 Provisions for draft and dimensioning 3.1 Design The anchoring shall be designed by an engineer. Under consideration of the loads to be anchored, verifiable calculations and construction drawings are to be prepared. The construction drawings shall include details on location, size and length of the anchor channels and on the T-bolt type and the size of the corresponding T-bolts. 3.2 Dimensioning General The anchoring shall be dimensioned by an engineer. The verification of the direct local force application into the concrete is provided. On verification of the anchor channels according to the partial safety concept, the rated value of the resistance FRd up to 1.4 perm. F is determined. The transfer of the loads to be anchored into the component must be verified. The weakening of the concrete section by installing anchor channels is to be considered in static analysis, if necessary. Z /12

10 I General Building Approval No. Z Page 6 of 7 I 28th June 2012 A bending stress may only be disregarded where the component to be connected is made of metal and is braced against the channel without an intermediate layer, the hole diameter in the component to be connected does not exceed 14 mm for T-bolt M 12 and 18 mm for T-bolt M 16. Additional stresses that may arise in the anchor channel, in the component to be connected or in the component in which the anchor channel is anchored, from obstructed deformation (e.g. during temperature changes) are to be taken into account. The action of the single load or load pair may take place at any point of the anchor channels. The axis of the T-bolt must be at a distance of at least 2.5 cm from the channel end. The minimum distances (spacing, edge and corner distances) and component dimensions (component width and thickness) according to Appendix 5 may not be undershot. With diagonal tension load 45 and shear load vertically to the edge, a supplementary reinforcement according to the upper image of Appendix 6 is to be arranged for distances from 75 mm to 100 mm Permissible loads The permissible loads are specified in Appendix 5 depending on the profile length and stress directions. The channel can be stressed by tension loads, diagonal tension and shear loads, and longitudinal loads parallel to the channel axis Bending stress of T-bolts The permissible bending moments are specified in Appendix 5. The calculated clamping point is the top edge of the anchor channel. For bending with additional tension load or diagonal tension, the stresses must be superimposed: Fz perm. F (1 - M/perm M.) perm. F = permissible central tension load according to Appendix 5 perm. M = bending moment of the T-bolt according to Appendix 5 Fz = available tension load component M = available bending moment For facade cladding with variable bending stresses (e.g. as a result of temperature change), the tension fluctuation cra =±50 N/mm2 must not be exceeded by the average value crm in relation to the calculated tension cross-section of the T-bolt Special case of narrow reinforced concrete components An anchor channel arranged in the front-face of at least 10 cm thick lightly loaded reinforced concrete components (e.g. as facade panels, lightly-loaded traffic walls) may be subjected to permissible tension load according to Appendix 5 when an additional reinforcement is provided in accordance with Appendix Displacement behaviour Tension load; longitudinal load in channel longitudinal direction: Under permissible load, displacements of 0.5 mm can be expected towards the load: Shear load vertical to the channel longitudinal direction: Under permissible load, displacements of up to 1.5 mm vertically towards the channel longitudinal direction can be expected. If the T-bolts are fitted under load, displacements of up to 0.6 mm can be expected. This value increases to 2.0 mm when the load direction is reversed. Z /12

11 General Building Approval No. Z Page 7 of 7 I 28th June 2012 For shear loads, the existing hole clearance between T-bolt and attachment part has to be additionally considered. 4 Provisions for the design 4.1 Installation of anchor channels No anchors may be subsequently fixed nor other changes made to the anchor channel. The installation of the anchor channel must be performed in accordance with the design drawings in Section 3.1. The anchor channels shall be attached to the formwork so that they do not move during reinforcement installation or during pouring and compaction of concrete. The concrete must be compacted properly between the channels and under the head of the anchor. The anchor channels are to be protected against ingress of concrete into the channel profile. 4.2 Mounting the connection structure (T-bolt mounting) The required T-bolt size is to be taken from the design drawings. If, due to incorrect concrete introduction etc., the front edge of the anchor channel is not flush with the concrete surface, this gap must be padded under the entire surface during installation of the connection structure. The heads of the T-bolts, which are inserted into the channel slot, must fully rest on both legs of the anchor channel after a clockwise rotation of 90, snap into the toothing and be locked by tightening the nut with the torque wrench. The tightening torques specified in Appendix 5 must be complied with. After assembly, the correct seat of the T-bolt is to be checked, the marking slots on the shank end of the T-bolt must be transverse to the longitudinal channel direction. The axis distance of the T-bolts may not exceed the specifications in Appendix Control of the execution When installing the anchor channels and mounting the T-bolts (fastening of connection structures), the contractor entrusted with installing the anchor channels or the construction manager appointed by them or a proficient representative of the construction manager must be present on site. They are responsible for proper execution of work. In particular, they have to check the design and position of the anchor channels and of the supplementary reinforcement, if present. The records must be readily available during construction on site and they must be submitted to the monitoring officer on demand. The records as well as the delivery notes must be kept by the contractor after completion of the work for at least 5 years. Andreas Kummerow Head of division Z /12

12 Translation of the original German text not checked by the Deutsches Institut für Bautechnik Member thickness d Toothed T-bolts JZS Fixture Channel height h Anchorage depth hv Width of 250 Y Z the channel b JORDAHL Anchor Channel Type JZA Intended use Appendix 1 to General Building Approval Z Dated June 28, 2012

13 Translation of the original German text not checked by the Deutsches Institut für Bautechnik Profile dimensions JZA K 41/22 Tooth pitch Material Profile: S235JR according to DIN EN or. stainless steel /1.4404/ (A4); / (HCR); (F4) according to DIN EN Material I -Anchor: S235JRG2 according to DIN EN or. stainless steel /1.4404/1.4401(A4) according to DIN EN Anchor Type Material Round Anchor: QSt36 according to DIN EN or. stainless steel /1.4404/ (A4); (HCR); (F4) according to DIN EN Welded Anchor I Round Anchor R1 cutting length b a1 d2 t hv d1 welding position L welding position Q a2 hv Anchor position transversal (Q) Anchor position longitudinal (L) Table 1: dimension Anchor type Welded anchor Round Anchor approx. anchor height anchorage depth hv min.cuttinglength b head/footwidth a1/a2 web thickness t anchor position welding position weld a x l shaft diameter d1 I , ,5/18,5 5 Q/L Q/L 3x I , /25 5 Q Q 3x R , head diameter JORDAHL Anchor Channel Type JZA Geometrical profile properties Anchor Type Appendix 2 to General Building Approval Z Dated June 28, 2012

14 l Translation of the original German text not checked by the Deutsches Institut für Bautechnik Table 2: Anchor positioning Channel length T 50 T 25 Anchor spacing T 100 T T 150 T T 200 T 25 > T 250 T T 250 T // T 250 T 25 Table 3: Dimensions of T-bolt Toothed T-bolt type JZS d Strength grade b1 b2 b3 k h b2 Marking of the special T-bolt head e.g.: JZS A4 M ,5 34,5 16,5 9 1,5 k M ,5 34,5 16,5 9 1,5 M12 A ,5 34,5-7 1,5 M16 A ,5 34,5-9 1,5 T-bolts: Shaft and type of threading according to DIN EN ISO ,hdg steel according to DIN EN ISO stainless steel according to DIN EN ISO A4-50 (1.4571/1.4401/1.4404) ; HCR (1.4529); F4 (1.4462) Hexagon nut: strength class 8 according to DIN EN ISO stainless steel according to DIN EN ISO A4 (1.4571/1.4401/1.4404) ;HCR (1.4529); F4 (1.4462) Washer according to DIN EN ISO : steel according to DIN EN stainless steel according to DIN EN A4 (1.4571/1.4401/1.4404) ;HCR (1.4529); F4 (1.4462) Hexagon nuts and washers for the corrosion resistance class IV have the following marking: T-bolt length View A b1 b1 d View A b3 View A alternative head shape Notch for marking the position Notch for marking the position JORDAHL Anchor Channel Type JZA Anchor positioning Toothed T-bolt JZS Appendix 3 to General Building Approval Z Dated June 28, 2012

15 Translation of the original German text not checked by the Deutsches Institut für Bautechnik Table 4: Areas of use depending on corrosion protection Channel Constructional parts Anchor 1 Mill finish Mill finish Hot galvanized (Coating 50 μm) Hot galvanized (Coating 50 μm) Stainless steel / ) Hot galvanized (Coating 50 μm) Hot galvanized (Coating 50 μm) Stainless steel /1.4404/ Welded-on anchor mill finish 1) Stainless steel / ) T-bolt, Nut, Washer no corrosion protection Electrogalvanized (Coating 5 μm) Hot galvanized (Coating 40 μm) Strength class 50 Stainless steel / ) Intended use Use only possible if all the fixing elements are protected, depending on the ambient conditions, by a minimum concrete covering acc. to DIN : , Table 4 or DIN EN : with DIN EN /NA: , section 4.4. Concrete components in closed rooms, e.g. dwellings, offices, schools, hospitals, retail premises, except wet rooms Concrete components in interior rooms with normal atmospheric humidity (including kitchen, bathroom and washroom in dwellings) Constructions in corrosion resistance class III acc. to Z , e.g. in wet rooms, in the open air, industrial atmospheres and close to the sea, without further corrosive loading Constructions in corrosion resistance class IV acc. to Z with high corrosive loading by chlorides and sulphur dioxide (including elevated concentrations of the pollutants, e.g. components in seawater and road tunnels) Indoor swimming pools: see Table 10 of the General Building Approval Z ) Due to the corrosion protection of the welded-on anchors, a concrete cover c = 30 mm many be used. 2) According to Z , not permissible for indoor swimming pools. Marking of the Jordahl anchor channels The Marking (code) is to be made permanently on the rear of the channels (inside or outside) or on the channel web. It can be made by means of a sticker, imprint, embossing or other suitable measures. JZA K41/22 A4 Minimum requirement: Profile specification additionally, material in the case of a stainless steel design. JORDAHL Anchor Channel Type JZA Applications Marking Appendix 4 to General Building Approval Z Dated June 28, 2012

16 Profile JZA K 41/22 Minimum concrete strength Profile length [cm] B25 (C20/25) Tension load, Shear load, Diagonal tension Permissible loads F [kn] (T-bolts M12 or M16) Longitudinal load axis parallel to the channel, β 15 Single load Load pair Single load Load pair picture a picture b picture a picture c 5,0 3,5 5,0 5,0 Minimum distances and component dimensions [cm] Channel pair Installation torque [Nm] Strength class 8.8 Material quality A4-50 Permissible bending moments T-bolts [Nm] based on channel or bottom top Strength class 8.8 Material quality A4-50 7, , ,3 38,8 Translation of the original German text not checked by the Deutsches Institut für Bautechnik Table 6: Permissible Loads, Distances and Characteristics ar aa ae af b d ar1 aa1 M12 M16 M12 M16 M12 M16 M12 M16 The minimum distances specified in Table 1 are for reinforced concrete. With enlargement of the distances to 30% there are no requirements for the reinforcement. 1 With simultaneous tension or shear load and longitudinal loads the resulting load must not exceed the value of F = 5 kn for single loads or F = 3,5 kn for load pairs. 2 If the load direction differs more the 15 from the channel longitudinal axis, the permissible load must be reduced to F = 3.5 kn. 3 Valid only for one channel. 4 Calculated from the length of the anchor and the necessary concrete cover to DIN : or DIN EN _ with DIN EN /NA , section Valid only for tension loads and longitudinal loads. 6 Picture a) Single loads (for all load directions) Load Guideline ae ar1 aa1 [cm] ar1 af d Picture b) Load pair (for tension, shear, diagonal tension) ae Values for Tension [cm] ar aa ar b Picture c) Load pair (axis parallel to the channel) 5 Values for Longitudinal loads (spatial angle) 25 [cm] β=15 JORDAHL Anchor Channel Type JZS Permissible loads Spacing- and Edge Distances Appendix 5 to General Building Approval Z Dated June 28, 2012

17 Translation of the original German text not checked by the Deutsches Institut für Bautechnik Additional reinforcement for edge distances from 75 mm to < 100 mm and load direction perpendicular to the edge (see section 3.2.1). Supplementary reinforcement 75 < 100 required AS = perm. F Ơs Additional reinforcement in front face anchor channels with slab thickness d > 100 to 2ar, resp. 2ar1 (see section 3.2.4). Section A-A l b,net DIN : or l bd according to DIN EN : with DIN EN /NA: A S Loop (B500B) Minimum permissible bending diameter d Br or. Ø m,min A 40 e x Ø 6 50 e ae required AS = perm. F*0,25 Ơs Ơ s = 8kN/cm² applicable steel stress A s = reinforcement cross section [cm²] perm. F [kn] = max. load acc. to Annex 5 A JORDAHL-Anchor Channel JZA JORDAHL Anchor Channel Type JZA Supplementary reinforcement for reduced edge distance Appendix 6 to General Building Approval Z Dated June 28, 2012

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