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Komité: CEN/TC 89 (Thermal performance of buildings and building components)
Opprinnelse: SN
Sluttdato: 1. des 2022
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This document specifies a test method for the in situ testing of the thermal performance of building structures especially built for the purpose of the test. This document also specifies the apparatus to be used and the measurement procedures to collect the data and the reporting format for the apparatus including the building test structure and the test conditions. NOTE The analysis of the data and the reporting format for the analysis are referred to in prEN 17888-2. This document does not apply to: - existing buildings; - building structures allowing direct solar gains through glazing surfaces; - the determination of the thermal performance of a specific building product, material, component or element.
Komité: CEN/TC 250 (Structural Eurocodes)
Opprinnelse: SN
Sluttdato: 8. des 2022
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1.1 Scope of prEN 1998-1-1 (1) This document is applicable to the design and verification of buildings and other structures in seismic regions. It gives general rules relevant to all types of structures, with the exception of special structures. NOTE Special structures belong to consequence class CC4, which is not fully covered by the Eurocodes. The categories of structures of consequence class CC4 where EN 1998, or parts of it, apply in a country can be provided by the relevant Authorities or can be found in the National Annex. (2) This document provides basic performance requirements and compliance criteria applicable to buildings and civil engineering works in seismic regions. (3) This document gives rules for the representation of seismic actions and the description of the design seismic situations. Certain types of structures, dealt with in other parts of EN 1998, need supplementary rules which are given in those relevant Parts. (4) This document contains general methods for structural analysis and verification under seismic actions, including base-isolated structures and structures with distributed dissipative systems. (5) This document 1 contains rules for modelling and verification of ultimate strengths and deformations. 1.2 Assumptions (1) The general assumptions of prEN 1990:2021, 1.2, are supplemented as given in (2) to (6). (2) It is assumed that no change in the structure and in the masses carried by the structure will take place during the construction phase or during the subsequent life of the structure with respect to the design unless proper justification and verification is provided. This applies to ancillary elements as well (see 3.1.2). Due to the specific nature of the seismic response, this applies even in the case of changes that lead to an increase of the structural resistance. (3) The design documents are assumed to indicate the sizes, the details and the properties of the materials of the structural members. If appropriate, the design documents are also assumed to include the properties of special devices to be used and the distances between structural and ancillary elements. The necessary quality control provisions are assumed to be specified. (4) Members of special structural importance requiring special checking during construction are assumed to be identified on the design documents. In this case, the verification methods to be used are also assumed to be specified. (5) In case of high seismic action class (4.1.1(4)), formal quality system plans, covering design, construction, and use, additional to the control procedures prescribed in the other relevant Eurocodes, are assumed to be specified.
Komité: CEN/TC 250 (Structural Eurocodes)
Opprinnelse: SN
Sluttdato: 8. des 2022
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1.1 Scope of prEN 1998-5 (1) This document establishes general principles for the design and assessment of geotechnical systems in seismic regions. It gives general rules relevant to all families of geotechnical structures, to the design of foundations, retaining structures and underground structures and complements EN 1997-3 for the seismic design situation. (2) This document contains the basic performance requirements and compliance criteria applicable to geotechnical structures and geotechnical systems in seismic regions. (3) This document refers to the rules for the representation of seismic actions and the description of the seismic design situations defined in EN 1998-1-1 and provides specific definition of the seismic action applicable to geotechnical structures. 1.2 Assumptions (1) The general assumptions of prEN 1990:2021, 1.2, are assumed to be applied. (2) The provisions of this Standard assume that the parties of the project in charge of the analyses, for assessment and possible design of the retrofitting of existing geotechnical structures, have appropriate experience of the type of structures being strengthened or repaired.
Komité: ISO/TC 163/SC 1 (Test and measurement methods)
Opprinnelse: ISO
Sluttdato: 22. des 2022
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The method of observing the condition of the insulation layer with visual inspection and also themethod of measuring the thermal conduction or resistance of the insulation layer, of the buildingelements such as exterior wall, floor, ceiling, etc. (hereinafter, walls) in the field is described.The proposed method is divided into the quantitative method which measures the thermal resistanceand the thermal conductivity with the heat flow measurement, and the qualitative method without heatflow measurement. The former quantitative method can apply not only the insulation layer but alsowhole throughout wall.This document especially aims to test the furnished insulation layer in the walls. It demonstrates ascreening test with drilling a small diameter borehole through the walls with the presumed insulationlayer. Visual inspection with a borescope and measuring the temperature distribution by inserting thetemperature sensor, the qualitative futures of the insulation layer is evaluated. Adding themeasurement of the heat flow rate, thermal conductance (resistance) is quantitively evaluated.
Komité: CEN/TC 156 (Ventilation for buildings)
Opprinnelse: SN
Sluttdato: 19. jan 2023
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This document applies to the design, energy performance of buildings and implementation of ventilation, air conditioning and room conditioning systems for non-residential buildings subject to human occupancy, excluding applications like industrial processes. It focuses on the definitions of the various parameters that are relevant for such systems. The guidance for design given in this document and accompanying CEN/TR 16798 4 are mainly applicable to mechanical supply and/or exhaust ventilation systems. Natural ventilation systems or natural parts of hybrid ventilation systems are not covered by this document. Reference is made to the WI 00156243 (under development). Applications for residential ventilation are not covered in this document. Performance of ventilation systems in residential buildings are covered in EN 15665 and CEN/TR 14788. The classification uses different categories. For some values, examples are given and, for requirements, typical ranges with default values are presented. The default values are given in Annex B and a template for national specification is given in Annex A. Classification should always be appropriate to the type of building and its intended use, and the basis of the classification should be explained if the examples given in the European Standard are not to be used. NOTE 1 Different standards can express the categories for the same parameters in a different way, and also the category symbols can be different. Table 1 shows the relative position of this document within the set of EPB standards in the context of the modular structure as set out in EN ISO 52000 1. NOTE 2 In CEN ISO/TR 52000 2 the same Table can be found, with, for each module, the numbers of the relevant EPB standards and accompanying technical reports that are published or in preparation. NOTE 3 The modules represent EPB standards, although one EPB standard might cover more than one module and one module might be covered by more than one EPB standard, for instance a simplified and a detailed method respectively. See also Clause 2 and Table A.1 and Table B.1. Table 1 - Position of this document (in casu M5 1, M5 4), within the modular structure of the set of EPB standards ...