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prEN 438-8 Viešoji apklausa

Komentavimo iki data 2026-04-14

Didelio slėgio apdailos laminatai (HPL). Lakštai termoreaktyviųjų dervų pagrindu (paprastai vadinami laminatais). 8 dalis. Apdailos laminatų klasifikavimas ir techniniai reikalavimai

This document specifies performance requirements for design laminates intended for interior use with a design effect surface having a phenolic based core and a decorative surface not covered by EN 438-3 [1], EN 438-4 [2], EN 438-5 [3] and EN 438-6 [4]. This document is applicable to the following surface layer types: — metal surfaces; — wood veneer surfaces; — pearlescent decor surfaces; — lacquered surfaces. NOTE For the test methods relevant to this document, see EN 438-2.

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prEN ISO 13760 Viešoji apklausa

Komentavimo iki data 2026-03-24

Plastikiniai vamzdžiai skysčiams perduoti esant slėgiui. Miner'io taisyklė. Suvestinių nuostolių apskaičiavimo metodas (ISO/DIS 13760:2026)

In general terms, Miner’s rule is a common approach to calculate how the accumulation of a specific load that varies over time effects the time until failure. This international standard specifies the application of Miner’s rule for calculating the design time until failure of plastics pipes and piping systems of plastics materials under varying, but known, load conditions. Miner’s rule can also be applied reciprocally to calculate the tolerable load levels along a desired design time. This international standard specifies particularly the application of Miner’s rule to calculate stress or pressure regimes, respectively, that are tolerable during a targeted design time for plastics or composite pipes. Further, the application of Miner’s rule on the effect of accumulated damage on polyolefins caused by oxidative attack under varying temperatures and times on the design life is specified. It is necessary to apply Miner's rule to each failure mechanism separately. Thus, for mechanical failure due to internal pressure, other failure mechanisms, such as oxidative or dehydrochlorinative degradative failure mechanisms, are to be neglected (assuming, of course, no interaction). A material may be used only when it is proven to conform to all failure mechanism criteria. NOTE Miner's rule is an empirically based procedure and is only a first approximation to reality.

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prEN 17152-1 Archyvuotas

Komentavimo iki data 2026-02-24

Plastikinių vamzdžių sistemos, skirtos paviršinio vandens beslėgiam požeminiam perdavimui ir laikymui. Talpyklos, naudojamos infiltracijos, srauto silpninimo ir laikymo sistemose. 1 dalis. Techniniai reikalavimai, keliami iš PP ir PVC-U gaminamoms talpykloms

This document gives the definitions and specifies the minimum requirements for injection moulded, extruded and thermoformed thermoplastics cuboid shaped boxes, including integral components, used in underground systems for infiltration, attenuation and storage of surface water (e.g. storm water) and manufactured from polypropylene (PP) or unplasticized polyvinylchloride (PVC-U). Product properties are determined by a combination of material specifications, design and manufacturing process. These boxes are intended for buried underground use, e.g. in landscape, pedestrian or vehicular traffic areas. A box can either be factory assembled, or site assembled from different components. These boxes are intended to be used as elements in a modular system where the manufacturer states in the documentation how the components are assembled to create a complete infiltration, attenuation or storage system. NOTE Non load bearing component(s) can be manufactured by various methods e.g. extrusion, injection moulding, rotational moulding, thermoforming and low-pressure injection moulding.

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prEN 17151-1 Archyvuotas

Komentavimo iki data 2026-02-24

Plastikinių vamzdžių sistemos, skirtos paviršinio vandens beslėgiam požeminiam perdavimui ir laikymui. 1 dalis. Bandymo metodas talpyklų atsparumui ilgalaikiam gniuždymui nustatyti

This document specifies a test method for determining the long-term compression strength for a specified period on boxes made of thermoplastics materials for non-pressure underground conveyance and storage of non-potable water. The document is applicable for boxes which maintain their linear behaviour over the specified period.

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prEN 17151-2 Archyvuotas

Komentavimo iki data 2026-02-24

Plastikinių vamzdžių sistemos, skirtos paviršinio vandens beslėgiam požeminiam perdavimui ir laikymui. 2 dalis. Bandymo metodas talpyklų valkšnumo elgsenai nustatyti

This document specifies a test method for determining the compressive creep behaviour of boxes made of thermoplastic materials intended for use in a modular system for non-pressure underground conveyance and storage of surface water.

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prEN 15383 Archyvuotas

Komentavimo iki data 2026-02-17

Nuotakyno plastikinių vamzdžių sistemos. Termoreaktyvieji stiklo plastikai poliesterinių dervų pagrindu. Šuliniai ir apžiūros šulinėliai

This document applies to: a) manholes, when made from glass-reinforced thermosetting plastics (GRP) based on polyester resin (UP); b) inspection chambers, when made from glass-reinforced thermosetting plastics (GRP) based on polyester resin (UP) which are intended to be used with inverts which are at a depth not exceeding 2 m. These products are intended to be used within a drain or sewer system operating without pressure or occasionally at a head of pressure up to 1 bar. It applies to products, and their joints, intended for use in buried installations and to be installed by open-trench techniques. The units have a circular shape with nominal sizes as specified in EN ISO 23856. The intended use of these products is to provide access to, buried drain or sewer systems for the conveyance of waste water at temperatures up to 50 °C, without pressure or occasionally at a head of pressure up to 1 bar, outside buildings and installed in areas subjected to vehicle and/or pedestrian traffic. It specifies definitions including symbols, requirements and characteristics of manholes, inspection chambers, joints, materials, test methods and marking. NOTE It is the responsibility of the purchaser or specifier to make the appropriate selections, taking into account their particular requirements and any relevant national regulations and installation practices or codes.

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