Stavebnictví

Komise : CEN/TC 350 (Sustainability of construction works)
Původce: CEN
K připomínkám do: 2.11.2021
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This document specifies the calculation method, based on Life Cycle Assessment (LCA) and other quantified environmental information, to assess the environmental performance of a building and its site, and gives the means for the reporting and communication of the outcome of the assessment. The standard is applicable to new and existing buildings and refurbishment projects.

The document gives:

—    the description of the object of assessment,

—    the system boundary that applies at the building level,

—    the procedure to be used for the inventory analysis,

—    the list of indicators and procedures for the calculations of these indicators,

—    optional indicators that may be used to provide additional information concerning environmental impacts and aspects at the local level, technical characteristics and management processes that support environmental performance,

—    the requirements for the data necessary for the calculation, and

—    the requirements for presentation of the results in reporting and communication.

The approach to the assessment covers all stages of the building life cycle and is based on data obtained from Environmental Product Declarations (EPD), their "information modules" (EN 15804+A2,2019) and other data and information necessary and relevant for carrying out the assessment. The assessment includes all building related construction products, processes and services, used over the life cycle of the building.

The interpretation and value judgments of the results of the assessment are not within the scope of this European Standard.

NOTE 1        EPD according to product category rules of construction products (i.e. PCR or c-PCR) that follow EN15804+A2:2019) are generally deemed to satisfy the requirements of this standard, subject to their also meeting the requirements of PrEN 15941.

NOTE 2        EN 15978 -1 provides indicators, calculation rules and system boundaries for the assessment of greenhouse gas emissions, resource consumption and operational water use among other issues of the life cycle related environmental performance of buildings. It also provides the methodological basis and assessment rules to support the achievement of environment related macro objectives in Europe and instruments such as the European reporting framework LEVEL(s).

NOTE 3        LEVEL(s), is a common European approach to assess and report on the sustainability of buildings. Using existing standards, the voluntary Level(s) framework provides a common language for building sustainability, which other initiatives can also use. More information can be found at Level(s) (europa.eu).

Oblast zaměření: Dveře a okna
Komise : CEN/TC 33 (Doors, windows, shutters, building hardware and curtain walling)
Původce: CEN
K připomínkám do: 9.11.2021
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This document specifies requirements for assessment of the mechanical strength of metal profiles incorporating a thermal barrier having mechanical performance depending on their intended use.

It also specifies the tests to determine the characteristic values of mechanical properties of the thermal barrier profile and to assess the effect of different conditionings of the thermal barrier on the mechanical performance of the connection.

Thermal barriers which do not give a contribution to the mechanical resistance of the profiles are excluded from this document.

This document applies to thermal barrier profiles designed mainly for windows, doors, screens and curtain walls. It does not apply to thermal barriers made only of metal profiles connected with metal pins or screws.

Oblast zaměření: Stavební konstrukce
Komise : CEN/TC 166 (Chimneys)
Původce: CEN
K připomínkám do: 9.11.2021
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This document describes the method of specifying the design, installation and labelling criteria for system chimneys, construction of custom-built chimneys, the relining of existing chimneys and connecting flue pipes for non-room sealed combustion appliances as well as the use of chimney products. It also gives information on commissioning of chimneys.

This document applies to chimneys which are subject to the following limiting conditions (specified in EN 13084‑1 - freestanding chimneys):

—    the horizontal distance between the building and the chimney outer wall not to exceed 1 m;

—    the distance between the supports not to exceed 4 m;

—    the distance above the last structural attachment not to exceed 3 m.

The methods in this part of this document are applicable to chimneys and connecting flue pipes for non-room sealed combustion appliances. The methods in Part 2 of this European Standard are applicable to chimneys and connecting flue pipes for room sealed combustion appliances.

For the purpose of this document the term “installation” includes construction.

Oblast zaměření: Sanitární zařízení
Komise : CEN/TC 429 (Food hygiene - Commercial warewashing machines - Hygiene requirements and testing)
Původce: CEN
K připomínkám do: 9.11.2021
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This document specifies hygiene requirements relating to the operation of commercial dishwashing machines (hereinafter referred to as dishwashing machines). It specifies requirements for hygienic results of the articles treated in the dishwashing machines. This includes also guidelines for their hygienic and proper operation and for care and maintenance of the machinery. Furthermore, methods for testing hygienic operation are defined.

Dishwashing machines are used in a professional environment for cleaning washware that is used in contact with food.

This document applies to dishwashing machines for cleaning washware that is used in contact with food, such as crockery, glassware, cutlery, reusable boxes and similar articles.

Dishwashing machines (see 3.3) are used in kitchens e.g. in restaurants, canteens and hospitals and in commercial enterprises such as bakeries, butcher's shops, etc.

This document does not apply to domestic dishwashing machines, washer disinfectors for the treatment of medical devices and machines for industrial use (e.g. machines for cleaning proofing trays, returnable bottles, equipment of other machines like mincer, slicer, cutter, dough dividers or kneader, mixers, stirrers and all other kind of machines from which parts could be cleaned by washing out of place (WOP)).

Oblast zaměření: Stavební konstrukce
Komise : CEN/TC 166 (Chimneys)
Původce: CEN
K připomínkám do: 9.11.2021
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This document describes the method of specifying the design, installation and labelling criteria for chimney systems, construction of custom-built chimneys, the relining or converting of existing chimneys, connecting flue pipes and air supply pipes for room sealed applications. It also gives information on commissioning of an installed chimney.

This document applies to chimneys which are subject to the following limiting conditions (specified in EN 13084-1):

the horizontal distance between the building and the outer wall of the chimney system not to exceed 1 m,

the distance between the supports not to exceed 4 m,

the distance above the last structural attachment not to exceed 3 m.

This document does not cover:

chimneys which serve a mixture of fan assisted or forced draught burners or natural draught appliances,

installations having a configuration of the type C2.

NOTE          Room sealed gas appliances are classified as type C according to EN 1749.

The methods in this part of this document are applicable to chimneys and connecting flue pipes for room sealed combustion appliances. The methods in Part 1 of this document are applicable to chimneys and connecting flue pipes for non-room sealed combustion appliances.

For the purpose of this document European Standard the term "installation" includes construction.

Oblast zaměření: Geotechnika
Komise : CEN/TC 189 (Geosynthetics)
Původce: CEN
K připomínkám do: 16.11.2021
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This document describes an index test method that covers laboratory measurement of water flux through saturated clay geosynthetic barrier (GBR-C) specimens using a flexible wall permeameter at constant head.

This test method is applicable to GBR-C products with no additional sealing layers attached (e.g. polymeric or bituminous).

This test method provides a measurement of flux under a prescribed set of conditions that can be used for manufacturing quality control. The test method can also be used to check conformance.

The flux value determined using this test method is not considered to be representative of the in-service flux of a GBR-C.

Oblast zaměření: Geotechnika
Komise : CEN/TC 189 (Geosynthetics)
Původce: CEN
K připomínkám do: 16.11.2021
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This document describes a procedure for producing mechanical damage to geotextiles and geotextile-related products, due only to compaction of site specific materials. The damage is assessed visually and by the loss of tensile strength. Other reference tests can be used to assess the damage caused by this procedure.

The method described is a full-scale test procedure, using a range of fills and compaction methods as agreed upon by Parties, and may be used for the derivation of a reduction factor for installation damage for geotextile and geotextile-related product reinforcement. This procedure is not applicable for use in pavements and asphalt overlays.

Oblast zaměření: Stavební konstrukce
Komise : CEN/TC 250 (Structural Eurocodes)
Původce: CEN
K připomínkám do: 23.11.2021
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                The methods given in this Eurocode are applicable to buildings and civil engineering works, with a fire load related to the building and its occupancy.

(2)         prEN 1991‑1‑2 deals with thermal and mechanical actions on structures exposed to fire. It is intended to be used in conjunction with the fire design Parts of EN 1992 to EN 1996 and EN 1999 which give rules for designing structures for fire resistance.

(3)         prEN 1991‑1‑2 contains thermal actions either nominal or physically based. More data and models for physically based thermal actions are given in annexes.

(4)         prEN 1991‑1‑2 does not cover the assessment of the damage of a structure after a fire.

(5)         prEN 1991‑1‑2 does not cover supplementary requirements concerning, for example:

—    the possible installation and maintenance of sprinkler systems;

—    conditions on occupancy of building or fire compartment;

—    the use of approved insulation and coating materials, including their maintenance.

Oblast zaměření: Stavební konstrukce
Komise : CEN/TC 250 (Structural Eurocodes)
Původce: CEN
K připomínkám do: 23.11.2021
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This document gives the general basis for the design of structures in plain, reinforced and prestressed concrete made with normal weight, lightweight and heavyweight aggregates together with specific rules for buildings, bridges and civil engineering structures, including temporary structures, under temperature conditions between −40 °C and +100 °C generally. It complies with the principles and requirements for the safety, serviceability, durability and robustness of structures, the basis of their design and verification that are given in prEN 1990:2021 Basis of structural and geotechnical design.

(2)         prEN 1992 is only concerned with the requirements for resistance, serviceability, durability, robustness and fire resistance of concrete structures. Other requirements, e.g. concerning thermal or sound insulation, are not considered.

(3)         Specific rules or information are covered in Annexes:

for Assessment of Existing Structures in Annex I,

for Strengthening of Existing Concrete Structures with CFRP in Annex J and Annex C.

for embedded FRP reinforcement in Annex JA and Annex C.

for Steel Fibres Reinforced Concrete in Annex L and Annex C.

for Stainless Steel Reinforcement in Annex Q and Annex C.

(4)         This Part 1‑1 does not cover:

resistance to fire (see EN 1992‑1‑2),

fastenings in concrete (see EN 1992‑4),

seismic design (see EN 1998 (all parts)),

particular aspects of special types of civil engineering works (such as dams, pressure vessels),

structures made with no-fines concrete, aerated or cellular concrete, lightweight aggregate concrete with open structure components,

structures containing structural steel sections (see EN 1994 (all parts)) for composite steel-concrete structures),

Structural parts made of concrete with a smallest value of the upper sieve aggregate size Dlower < 8 mm, unless otherwise stated in the code.

Oblast zaměření: Stavební konstrukce
Komise : CEN/TC 250 (Structural Eurocodes)
Původce: CEN
K připomínkám do: 23.11.2021
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(1)         This document defines imposed loads (models and representative values) associated with road traffic, pedestrian actions and rail traffic which include, when relevant, dynamic effects and centrifugal, braking and acceleration actions and actions for accidental design situations.

(2)         Imposed loads defined in this document are applicable for the design of new bridges, including piers, abutments, upstand walls, wing walls and flank walls, noise barriers, canopies etc., and their foundations. Where appropriate, the loads can also be considered as a basis for assessment or modification of existing structures in combination with complementary conditions if necessary.

(3)         The load models and values given in this document are also applicable for the design of retaining walls adjacent to roads and railway lines and the design of earthworks subject to road or rail traffic actions. This document also provides applicability conditions for specific load models.

(4)         This document is intended to be used with prEN 1990, the other parts of the EN 1991 series and the EN 1992 series to EN 1999 series for the design of structures.

Oblast zaměření: Stavební konstrukce
Komise : CEN/TC 250 (Structural Eurocodes)
Původce: CEN
K připomínkám do: 23.11.2021
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(1) This document establishes principles and requirements for the safety, serviceability, robustness and durability of structures, including geotechnical structures, appropriate to the consequences of failure.

(2) This document is intended to be used in conjunction with the other Eurocodes for the design of buildings and civil engineering works, including temporary structures.

(3) This document describes the basis for structural and geotechnical design and verification according to the limit state principle.

(4) Design and verification in this document are based primarily on the partial factor method.

NOTE 1       Alternative methods are given in the other Eurocodes for specific applications.

NOTE 2       The Annexes to this document also provide general guidance concerning the use of alternative methods.

(5) This document is also applicable for:

—    structural appraisal of existing construction;

—    developing the design of repairs, improvements and alterations;

—    assessing changes of use.

(6) This document is applicable for the design of structures where materials or actions outside the scope of EN 1991 to EN 1999 are involved.

NOTE          In this case, additional or amended provisions can be necessary.

Oblast zaměření: Stavební konstrukce
Komise : CEN/TC 250 (Structural Eurocodes)
Původce: CEN
K připomínkám do: 23.11.2021
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This document deals with the design of concrete structures for the accidental situation of fire exposure and is intended to be used in conjunction with prEN 1992‑1‑1 and prEN 1991‑1‑2. This document identifies differences from, or supplements to, normal temperature design.

(2)         This document applies to concrete structures required to fulfil a loadbearing function, separating function or both.

(3)         This document gives principles and application rules for the design of structures for specified requirements in respect of the aforementioned functions and the levels of performance.

(4)         This document applies to structures, or parts of structures, that are within the scope of prEN 1992‑1‑1 and are designed accordingly.

(5)         The methods given in this document are applicable to normal weight concrete up to strength class C100/115 and lightweight concrete up to strength class LC50/60.

Oblast zaměření: Beton
Komise : CEN/TC 104 (Concrete and related products)
Původce: CEN
K připomínkám do: 30.11.2021
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This document describes a method for determining the electrical resistivity of concrete in water saturated conditions. Two methods of measuring the resistivity are standardized: the volumetric method (see 3.1.3), which is the reference method, and the surface method (see 3.1.4).

NOTE            The volumetric method is applicable to cast specimens or cores, while the surface method is suitable for use on cast specimens, cores and on construction site, but not all these applications are covered in this document.

The method can be applied to the normal range of concretes covered by current standards. It does not cover the concretes made with porous aggregates or having metallic components.

The use of resistivity to assess the potential for corrosion of reinforcement in existing structures is not specified in this document.

The use of resistivity to assess cores taken from an existing structure, which need pre-condition on water saturation, is not directly specified in this document.

Komise : CEN/TC 227 (Road materials)
Původce: CEN
K připomínkám do: 30.11.2021
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This document describes a test method to determine the ash content in natural asphalts (including lake asphalts), binders containing natural asphalts or bitumens. For the method to apply, it is essential that any mineral matter in the binder be finely divided and cannot exceed 45 % by mass.

Oblast zaměření: Zděné konstrukce
Komise : CEN/TC 246 (Natural stones)
Původce: CEN
K připomínkám do: 30.11.2021
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This document specifies a laboratory method for determining the resistance to thermal and moisture cycling of marble intended for the external cladding of building facades.

For scientific definition of marble, reference is made to EN 12670 Terminology: 2.1.243 a.

NOTE            Bowing and rapid strength loss is known to occur in some marbles when used as exterior cladding.

Komise : CEN/TC 229 (Precast concrete products)
Původce: CEN
K připomínkám do: 6.12.2021
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This document complements the core rules for the product category of construction products as defined in EN 15804:2012+A2:2019 and is intended to be used as a c-PCR in conjunction with that standard.

This document applies to concrete and concrete elements for building and civil engineering, excluded autoclaved aerated concrete.

This document defines the parameters to be reported, what EPD types (and life cycle stages) to be covered, what rules to be followed in order to generate Life Cycle Inventories (LCI) and conduct Life Cycle Impact Assessment (LCIA) and the data quality to be used in the development of EPDs.

In addition to the common parts of EN 15804:2012+A2:2019, this document for concrete and concrete elements:

—    defines the system boundaries;

—    defines the modelling and assessment of material-specific characteristics;

—    defines allocation procedures for multi-output processes along the production chain;

—    defines allocation procedures for reuse and recycling;

—    includes the rules for calculating the LCI and the LCIA underlying the EPD;

—    provides guidance/specific rules for the determination of the reference service life (RSL);

—    gives guidance on the establishment of default scenarios;

—    gives guidance on default functional units for concrete elements.

This document is intended to be used either for cradle to gate with options or cradle to grave assessment, provided the intentions are properly stated in the system boundary description.

Within the construction works context, a cradle to grave declaration delivers a more comprehensive understanding of the environmental impact associated with concrete and concrete elements.

Oblast zaměření: Dveře a okna
Komise : CEN/TC 33 (Doors, windows, shutters, building hardware and curtain walling)
Původce: CEN
K připomínkám do: 13.12.2021
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This document specifies requirements and test methods for sensitive protective equipment put separately on the market as safety components to be used with entrance equipment such as power operated industrial, commercial and garage doors, gates and barriers, power operated pedestrian doors and power operated pedestrian entrance control equipment, when any safety standard covering such entrance equipment references this standard.

This document deals with all significant hazards, hazardous situations and events relevant to the power operation of doors, and gates when they are used as intended and under conditions of misuse which are reasonably foreseeable as identified in Clause 4.

All lifetime phases of the machinery including transportation, assembly, dismantling, disabling and scrapping are considered by this document.

Whenever the term „door” is used in this document, it is deemed to cover the full scope of types and variances of doors, gates and barriers defined and entrance control equipment by the scope of EN 12453:2017+A1:2021, EN 16005:2012 and FprEN 17352:2021.

This document does not deal with sensitive protective equipment using ultrasonic, radar, capacitive, inductive, passive infrared and vision based technologies. For these types of equipment this document can be used as a guide.