Modulares Rigolensystem für die Versickerung von Niederschlagswasser mit der Bezeichnung "ACO Stormbrixx"

Transcription

1 Date: Reference: III /11 Approval number: Z Validity from: 26. April 2013 to: 26. April 2018 Applicant: ACO Tiefbau Vertrieb GmbH Am Ahlmannkai Büdelsdorf Subject of approval: Modulares Rigolensystem für die Versickerung von Niederschlagswasser mit der Bezeichnung "ACO Stormbrixx" The subject of approval mentioned above is herewith generally approved in the field of construction. This allgemeine bauaufsichtliche Zulassung ('national technical approval') comprises eleven pages and five annexes. Translation authorized by DIBt

2 Nr. Z Page 2 of April 2013 I GENERAL PROVISIONS 1 With the allgemeine bauaufsichtliche Zulassung ('national technical approval') the fitness for use and the applicability of the subject of approval according to the Landesbauordnungen ('Building Regulations of the Land') has been verified. 2 If, in the allgemeine bauaufsichtliche Zulassung ('national technical approval') requirements are made concerning the special expertise and experience of persons entrusted with the manufacture of construction products and types of construction according to the relevant regulations of the Land following section 17, sub-section 5 Musterbauordnung ('Model Building Code'), it is to be noted that this expertise and experience can also be proven by equivalent verifications from other Member States of the European Union. If necessary, this also applies to verifications presented within the framework of the Agreement on the European Economic Area (EEA) or other bilateral agreements. 3 The allgemeine bauaufsichtliche Zulassung ('national technical approval') does not replace the permits, approvals and certificates prescribed by law for carrying out building projects. 4 The allgemeine bauaufsichtliche Zulassung ('national technical approval') will be granted without prejudice to the rights of third parties, in particular private property rights. 5 Notwithstanding further regulations in the "Specific Provisions" manufacturers and distributors of the subject of approval shall make copies of the allgemeine bauaufsichtliche Zulassung ('national technical approval') available to the user and point out that the allgemeine bauaufsichtliche Zulassung ('national technical approval') has to be available at the place of use. Upon request copies of the allgemeine bauaufsichtliche Zulassung ('national technical approval') shall be placed at the disposal of the authorities involved. 6 The allgemeine bauaufsichtliche Zulasssung ('national technical approval') may be reproduced in full only. Publication in the form of extracts requires the consent of Deutsches Institut für Bautechnik. Texts and drawings of advertising brochures may not be in contradiction to the allgemeine bauaufsichtliche Zulassung ('national technical approval'). Translations of the allgemeine bauaufsichtliche Zulassung ('national technical approval') have to contain the note "Translation of the German original, not checked by Deutsches Institut für Bautechnik". 7 The allgemeine bauaufsichtliche Zulassung ('national technical approval') is granted until revoked. The provisions of the allgemeine bauaufsichtliche Zulassung ('national technical approval') can subsequently be supplemented and amended in particular, if this is required by new technical findings.

3 Nr. Z Page 3 of April 2013 II SPECIFIC PROVISIONS 1 Subject of approval and field of application The subject of this allgemeine bauaufsichtliche Zulassung ('national technical approval') is a system of rectangular prism-shaped polypropylene infiltration elements with the designation 'ACO Stormbrixx' for stormwater infiltration as part of underground infiltration and storage systems. The approval applies to the ACO Stormbrixx system comprising the basic elements, side walls, covers and connectors. The infiltration system made up of individual basic elements may only be used for underground stormwater infiltration in accordance with the scope defined in DWA-A Other applications such as infiltration of untreated runoff from suspected and known contaminated sites as well as from sites such as petrol stations where groundwater pollutants are handled are not included in the scope of this approval. The ACO Stormbrixx system shall be installed with a soil cover of at least 1.00 m. The ACO Stormbrixx system may only be installed with layers comprising at least two basic elements each. Installation with layers comprising only one basic element each is not permissible. The maximum installed height of the infiltration system is restricted to 2.0 m (maximum three stacked layers). The surfaces above the infiltration system may not be built up for any purposes except for traffic areas. The traffic loads on the surfaces above infiltration systems may not exceed load class Bk0.3 in accordance with RStO The allgemeine bauaufsichtliche Zulassung ('national technical approval') applies only to use of the ACO Stormbrixx system in non-earthquake-prone areas. 2 Provisions for the ACO Stormbrixx system components and accessories 2.1 Properties and composition General An ACO Stormbrixx infiltration system is composed of basic elements arranged in layers. Each layer consists of stacks of two basic elements which are laid either individually or as an assembly according to the diagrams in annex 5. If laying is carried out with assemblies, connectors are only required between the individual layers. The entire infiltration system is completely covered with a geotextile. 1 2 DWA-A 138 RStO 12 Deutsche Vereinigung für Wasserwirtschaft, Abwasser und Abfall e. V. ('German Association for Water Economy, Wastewater and Waste') (DWA) Worksheet 138: Planning, construction and operation of facilities for the percolation of precipitation water, issue: Forschungsgesellschaft für Straßen- und Verkehrswesen (FGSV): Guidelines for the standardisation of the superstructure in traffic areas; FGSV Verlag; issue: 2012

4 Nr. Z Page 4 of April Material and material characteristics The basic elements and the associated side walls and covers are made from a polypropylene / talc compound which is based on DIN EN corresponding to the formula specifications which are stored with Deutsches Institut für Bautechnik (DIBt) and the external surveillance body and shall at least exhibit the following properties: - density in accordance with DIN EN ISO g/cm³ 1.18 g/cm³ - melt mass-flow rate (MFR 230 C / 2.16 kg) in accordance with DIN EN ISO g/10 min 19 g/10 min - change in dimensions after warm storage in accordance with DIN EN ISO < 2.0% - Charpy impact strength (test method 'eu') in accordance with DIN EN ISO at 23 C 20 kj/m² - modulus of elasticity under tension E T in accordance with DIN EN ISO MPa - yield stress Y in accordance with DIN EN ISO MPa - modulus of elasticity under compression E f in accordance with DIN EN ISO MPa - flexural strength fm in accordance with DIN EN ISO MPa - modulus of elasticity under compression E c in accordance with DIN EN ISO MPa - compressive strength in accordance with DIN EN ISO MPa - oxidation induction temperature (OIT) in accordance with ISO C - filler content (ash) in accordance with DIN EN ISO % ± 2.5%. The connectors are made from polypropylene in accordance with DIN EN DIN EN Plastics piping systems for non-pressure underground drainage and sewerage Polypropylene with mineral modifiers (PP-MD) Part 1: Specifications for pipes, fittings and the system; German version EN : DIN EN ISO Plastics Methods for determining the density of non-cellular plastics Part 1: Immersion method, liquid pyknometer method and titration method (ISO :2004); German version EN ISO :2004; issue: DIN EN ISO 1133 Plastics Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics (ISO 1133:2005); German version EN ISO 1133:2005; issue: DIN EN ISO 2505 Thermoplastics pipes Longitudinal reversion Test method and parameters (ISO 2505:2005); German version EN ISO 2505:2005; issue: DIN EN ISO Plastics Determination of Charpy impact properties Part 1: Non-instrumented impact test (ISO 179-1:2010); German version EN ISO 179-1:2010; issue: DIN EN ISO Plastics Determination of tensile properties Part 1: General principles (ISO 527-2:1993 including Cor.1:1994); German version EN ISO 527-2:1996; issue: DIN EN ISO 178 Plastics Determination of flexural properties (ISO 178: Amd. 1:2004); German version EN ISO 178: A1:2005; issue: DIN EN ISO 604 Plastics Determination of compressive properties (ISO 604:2002); German version EN ISO 604:2003; issue: ISO Plastics Differential scanning calorimetry (DSC) Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT); issue: DIN EN ISO Plastics Determination of ash Part 1: General methods (ISO :2008); German version EN ISO :2008; issue: DIN EN Plastics piping systems for non-pressure underground drainage and sewerage Polypropylene (PP) Part 1: Specifications for pipes, fittings and the system; German version EN :2009; issue:

5 Nr. Z Page 5 of April Dimensions and weight Form, dimensions and tolerances of the infiltration blocks, side walls, covers and connectors meet the specifications given in annexes 1 to 4. The weight of each basic element is 10.2 kg ± 0.2 kg Condition of basic elements In a visual inspection without optical aids the basic elements exhibit a smooth surface free of burrs, scratches, bubbles, impurities, sunken areas and other irregularities (defects) as can be expected for the manufacturing process Colour The infiltration blocks and accessory parts are uniformly black throughout and the connectors uniformly red throughout Strength properties With a force applied vertically to the top / bottom side and a force applied horizontally to the longitudinal sides an infiltration element comprising two basic elements retains its shape. For an applied force complying with the provisions given in point 7 of section 2.3.2, the infiltration elements each comprising two basic infiltration block elements exhibit a short-term strength after 48 h of at least kn/m² in vertical direction and - 90 kn/m² in horizontal direction (without side panels) Geotextile The infiltration system built up of basic elements is wrapped with a geotextile during the laying process. Only a geotextile which is permeable to water and for which a declaration of conformity in accordance with DIN EN exists (CE marking) may be used for the covering. 2.2 Manufacture, packaging, transport, storage and marking Manufacture The basic elements shall be manufactured using the injection moulding process in consideration of the provisions given in section and shall possess the characteristics described in section 2.1 in accordance with the information given in annexes 1 4. During manufacture, at least the following production parameters shall be calibrated and continuously recorded each time the machine is started: - injection time, - holding time, - cycle time and - cylinder temperature. Only materials stored with DIBt and with trade names, manufacturers and characteristics corresponding to the specifications given in section shall be used for the manufacturing process. Use of process scrap of the same composition from the applicant's factories is permissible Packaging, transport and storage The basic elements shall be secured for storage and transport such that no impermissible deformation and no damage occurs. The corresponding storage and transport instructions of the applicant and the relevant accident prevention regulations shall be observed. 14 DIN EN Geotextiles and geotextile-related products Required characteristics for use in drainage systems; German version EN 13252:2000+A1:2005; issue:

6 Nr. Z Page 6 of April Marking The basic elements shall be marked by the applicant with the mark of conformity ('Ü mark') in accordance with the conformity marking regulations of the Laender including approval no. Z The mark may only be applied if the requirements given in section 2.3 are met. The infiltration blocks shall also each be marked at least once in a clearly visible and durable manner with the following information: - type designation - material PP - dimensions (L x W x H) - production facility - date of fabrication. 2.3 Demonstration of conformity General The attestation of conformity of the ACO Stormbrixx system with the provisions of this allgemeine bauaufsichtliche Zulassung ('national technical approval') shall be issued for every production facility in the form of a certificate of conformity based on factory production control and regular external surveillance, including initial type-testing of the system components, in accordance with the following provisions. To issue the certificate of compliance and for external surveillance, including the associated product testing to be carried out in the process, the applicant shall use an appropriately accredited certification body and an appropriately accredited inspection body. The declaration that a certificate of conformity has been granted shall be submitted by the applicant through marking of the construction products with the mark of conformity ('Ü mark') stating the intended use. The certification body shall send a copy of the certificate of compliance issued by it to Deutsches Institut für Bautechnik. A copy of the initial type testing evaluation report shall also be sent to Deutsches Institut für Bautechnik Factory production control A factory production control system shall be set up and implemented in each production facility. Factory production control is understood to be continuous surveillance of production by the applicant to ensure that the construction products manufactured satisfy the provisions of this allgemeine bauaufsichtliche Zulassung ('national technical approval'). The factory production control shall at least include the measures listed below. - Description and verification of the starting material and the constituents: The characteristics of the material used and checking of these characteristics shall comply with the specifications given in section For each delivery the manufacturer of the system components shall obtain confirmation of compliance of the material used with the specifications given in section in the form of an acceptance test certificate 3.1 in accordance with DIN EN from the raw materials supplier. Within the scope of the factory production control, spot checks shall be carried out on each batch to determine whether the supplied material complies with the requirements for density, melt mass-flow rate, filler content and tensile strength. - Checks and tests to be carried out during manufacture: The specifications given in section shall be complied with. 15 DIN EN Metallic products Types of inspection documents; German version EN 10204:2004; issue:

7 Nr. Z Page 7 of April Verifications and tests to be carried out on the finished construction product: At least the requirements given in the following sections shall be checked: 1. The value specified in section for the melt mass-flow rate of the processed polypropylene shall be checked in accordance with DIN EN ISO to ensure compliance with the limit values once a week as well as every time the raw material is changed. 2. Compliance with the Charpy impact strength specified in section shall be checked every time the raw material is changed and once a month on a spot check basis in accordance with DIN EN ISO 179-1/1eU Compliance with the yield stress Y and the modulus of elasticity under tension E T specified in section shall be checked every time the raw material is changed and once a month on a spot check basis in accordance with DIN EN ISO Agreement with the values specified in section regarding the dimensions of the basic elements, side walls, covers and connectors shall be checked upon start of production and thereafter once every shift, every time the raw materials are changed and whenever changes are made to the system parameters. All dimensions affecting the function shall be checked; these include lengths, widths and heights. 5. Agreement with the values specified in section regarding the weights of the basic elements shall be checked upon start of production and thereafter once every shift, every time the raw materials are changed and whenever changes are made to the system parameters. 6. Agreement with the specifications in section regarding the condition of the infiltration blocks and accessory parts shall be checked continuously upon start of production and thereafter once every shift. 7. Agreement with the specifications in section regarding the colouring of the infiltration blocks and accessory parts shall be checked continuously upon start of production and thereafter once every shift. 8. For checking of the strength properties specified in section 2.1.6, one infiltration element comprising two infiltration block basic elements (excluding side walls) shall be loaded with an increasing uniform surface load up to the maximum test load following conditioning for at least 2 h at 23 C ± 2 C normal temperature on the upper and lower sides or the side surfaces, depending on the installation position. The load shall be increased continuously at a testing speed of 500 N/m²s, with the maximum test load to be reached being at least 395 kn/m² for the load acting from above and 90 kn/m² for the load applied to the side. The applied force and the shape retention shall be recorded continuously over the entire course of the test. A drop in force and/or loss of stability before the maximum test load has been reached means that the tested infiltration blocks have failed. The strength properties of the infiltration blocks shall be checked at least for the loads acting from above upon start of production, after each change of raw materials and after each change in system parameters, or at least once a day. 9. Compliance with the manufacture and marking specifications given in sections and shall be checked continuously during production. The results of factory production control shall be recorded and evaluated. The records shall at least include the following information: - designation of the construction product or the starting product and the constituents, - type of inspection or test, - date of manufacture and testing of the construction product or the starting material, 16 DIN EN ISO Plastics Determination of tensile properties Part 2: Test conditions for moulding and extrusion plastics (ISO 527-2:1993 including Cor.1:1994); German version EN ISO 527-2:1996; issue:

8 Nr. Z Page 8 of April results of the inspections and tests as well as (if applicable) comparison with requirements and - signature of the person responsible for factory production control. The records shall be kept for at least five years and submitted to the inspection body used for external surveillance. They shall be presented to Deutsches Institut für Bautechnik and the competent highest-level building authority upon request. If the test result is unsatisfactory, the applicant shall immediately take the necessary measures to resolve the defect. Construction products which do not meet the requirements shall be handled in such a manner that they cannot be mixed up with compliant products. After the defect has been remedied the relevant test shall be repeated immediately - where technically practicable and necessary for demonstration that the defect has been eliminated External surveillance The factory production control system at each production facility shall be inspected regularly, i.e. at least twice a year, by means of external surveillance. Initial type-testing of the infiltration blocks shall also be carried out within the scope of external surveillance. Spot checks shall be carried out to check for compliance with the requirements given in section 2.3.2, in particular the requirements for strength properties (including checking of the horizontal and vertical load tests) of the infiltration blocks corresponding to the specifications given in section Sampling and testing are always the responsibility of the accredited inspection body. The results of certification and external surveillance shall be kept for at least five years. They shall be presented by the certification or inspection body to Deutsches Institut für Bautechnik and the competent highest-level building authority upon request. 3 Provisions for the dimensioning 3.1 Infiltration performance Unless otherwise specified, the dimensioning principles and conditions of worksheet DWA-A and of the advisory leaflet DWA-M of Deutsche Vereinigung für Wasserwirtschaft, Abwasser und Abfall e. V. ('German Association for Water Economy, Wastewater and Waste') shall apply for the dimensioning of the infiltration systems. For the purposes of ensuring the performance of the infiltration system, the corresponding hydraulic verifications of the infiltration capacity of the ground as well as the local groundwater conditions, for instance in conjunction with a geotechnical report, shall be obtained as a basis for system dimensioning. 3.2 Stability The stability of each individual infiltration system shall be verified through static calculations for the ultimate limit state (ULS) and for the serviceability limit state (SLS) for a maximum allowable deflection corresponding to the specifications given in table 2. The following shall apply: σ E,d σ R,d (1) where σ E,d is the design value for the loads / forces acting on the component and σ R,d is the design value for the structural resistance. The static calculations shall be checked by an official testing authority or a test engineer to ensure stability. Verification is provided when the load-bearing capacity according to formula (1) is verified. Type-based static analyses can be created for standard installations; these shall be checked by an official testing authority for construction analysis. It is recommended 17 DWA-M 153 Deutsche Vereinigung für Wasserwirtschaft, Abwasser und Abfall e. V. ('German Association for Water Economy, Wastewater and Waste') (DWA) - Advisory leaflet 153: Recommended actions for dealing with stormwater; issue:

9 Nr. Z Page 9 of April 2013 that official testing authorities or test engineers for structural stability with special knowledge in plastics construction such as the following be assigned: - LGA Prüfamt für Standsicherheit in Nuremberg, - Deutsches Institut für Bautechnik (for type testing). In the special case of use of the ACO Stormbrixx system, determination of the load (forces acting on the structure) σ E,d shall be based on a failure model without side reactions. The forces acting on the structure (actions) shall be determined for: - constant loads σ G,k in accordance with DIN EN , DIN , DIN and, if applicable, DIN EN The partial safety factor G in accordance with DIN shall be applied, but shall at least correspond to the value given in table 3. - for fluctuating loads σ Q,k in accordance with DIN technical report with a partial safety factor Q which, however, shall at least be as high as the value given in table 3. In the determination of the design value for the resistance of the infiltration blocks σ R,d, the trench is assumed to have a characteristic maximum short-term compressive strength σ R,k for the ultimate limit state in accordance with table 1 and a characteristic maximum shortterm compressive strength σ R,k for the serviceability limit state in accordance with table 2 in consideration of a partial safety factor M for the structural resistance which is at least as high as the value given in table 3. Table 1: Characteristic minimum short-term compressive strength R,k for the ultimate limit state Configuration R,k [kn/m²] 1-layer layer layer DIN EN Eurocode 1: Actions on structures Part 1-1: General actions Densities, selfweight, imposed loads for buildings; German version EN :2002+AC:2009; issue: DIN Actions on structures Soil properties; issue: DIN Actions on structures Self-weight and imposed load in building; issue: DIN EN Eurocode 1: Actions on structures Part 1-3: General actions snow loads; German version EN : :2003+AC:2009; issue: DIN 1054 Subsoil Verification of the safety of earthworks and foundations Supplementary rules to DIN EN ; issue: DIN technical report 101 Actions on bridges; issue:

10 Nr. Z Page 10 of April 2013 Table 2: Characteristic minimum short-term compressive strength R,k for the serviceability limit state with maximum allowable deflection h all Configuration h all [mm] R,k [kn/m²] 1-layer layer layer Table 3: Applicable partial safety factors Partial safety factor for ULS SLS Constant loads G Fluctuating loads Q Structural resistance M For the lowering of the resistance of the infiltration block at least the reduction factors given in table 4 shall be applied. Table 4: Reduction factors for structural resistance Compressive creep 1-layer 2-layer 3-layer A 1 ULS SLS Effect of media A Effect of temperature A Inhomogeneities (including effect of joints and connections) A Effect of dynamic loads A Verification for the limit states is then carried out using: σ E,d = Σ σ G,k x G + Σ σ Q,k x Q σ R,k / ( M x A 1 x A 2 x A 3 x A 4 x A 5 ) = σ R,d (2) 4 Provisions for the execution The infiltration systems in the ACO Stormbrixx system may only be built up in layers consisting of joined basic elements, side walls, covers and connectors, with each layer consisting of stacks of two basic elements which are laid either individually or as an assembly (annex 5). All exterior sides of the ACO Stormbrixx system shall be sealed with side walls. Solely the cylindrical pylons of the upper layer of basic elements are closed with the covers. If several layers are installed, connectors in accordance with annex 4 shall be used between the individual layers. For assembly of the individual infiltration blocks into an infiltration system, the provisions for dimensioning in sections 3.1 and 3.2 shall apply. Unless otherwise specified, the following technical rules shall generally be observed: - DWA-A DWA-M

11 Nr. Z Page 11 of April DIN Infiltration systems may only be built with pipes, moulded components and access chambers which comply with the generally recognised rules of engineering or which are marked with the mark of conformity ('Ü mark'). The applicant shall supply an installation manual with each delivery. Installation shall be carried out in accordance with the installation instructions and in consideration of the following provisions: The system may only be built by individuals possessing the necessary specialised knowledge. For the excavation work the principles of DIN in accordance with the requirements of DIN EN shall apply. A level, flat and strong subgrade shall be created to facilitate laying. When the individual basic elements are being installed it shall be ensured that they have the correct vertical and horizontal alignment. They shall be aligned such that inspection and cleaning via the cleaning / inspection channels in the basic elements can be carried out as intended. Damaged basic elements shall not be installed. The infiltration system shall be completely wrapped with a geotextile with each wrap having an overlap of at least 50 cm. This applies both to laying of the geotextile in the region of the subgrade under the infiltration system and to the final covering after installation of the infiltration blocks. The overlaps shall be designed such that no backfill material can penetrate into the infiltration system. For ensuring the stability of the overall infiltration system, in particular with respect to displacement of individual infiltration blocks, side backfilling shall be carried out before the infiltration system is covered. During installation of the infiltration system and implementation of side backfilling and covering of the excavation, the infiltration system shall not be driven over. Installation shall be carried out using an end tipping method, for example with wheel loaders or excavators. The final compaction shall be carried out evenly in layers around the perimeter and with a suitable tool, with the required degree of uniform compaction around the perimeter depending on the planned later surface use and to be determined for each individual case. The executing company shall provide a written declaration of compliance with the provisions for execution of this allgemeine bauaufsichtliche Zulassung ('national technical approval') for each infiltration system built. The relevant accident prevention regulations shall be observed during execution. 5 Marking of the infiltration system The infiltration system shall be marked above ground by a sign which shall be marked in a permanent and legible manner with the following information: - size of infiltration system - depth of infiltration system - product name - year of manufacture DIN 4124 Excavations and trenches Slopes, planking and strutting breadths of working spaces; issue: DIN EN 1610 Construction and testing of drains and sewers; German version EN 1610:1997; issue: in connection with supplement 1; issue:

12 Nr. Z Page 12 of April Provisions for use and maintenance During use and maintenance of the infiltration system composed of infiltration blocks, the relevant accident prevention regulations shall be observed. During the validity period of this approval, the applicant shall submit at least three reports on the inspections carried out on the infiltration systems to Deutsches Institut für Bautechnik. Rudolf Kersten Head of Section Beglaubigt