Anläggningsarbete

Kommittébeteckning: SIS/TK 500 (Halksäkerhet)
Källa: CEN
Svarsdatum: den 15 jun 2020
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This document specifies test methods for the determination of the slip resistance of surfaces in the most commonly encountered situations in which pedestrians walk. NOTE It is also possible to use this document for measurements where persons might walk on trafficked areas.

Ämnesområden: Körbana
Kommittébeteckning: SIS/TK 202 (Vägmaterial)
Källa: CEN
Svarsdatum: den 15 jun 2020
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This document provides a framework for specifying a range of characteristics as well as applicable test methods for polymer modified bitumens, which are suitable for use in the construction and maintenance of roads, airfields and other paved areas, together with information on assessment and verification of constancy of performance. Polymer modified bitumen is defined in EN 12597.

This document describes the performance for characteristics of polymer modified bitumens, as shown in Table 1 and Table 2. It gives information for Declaration of Performance, selection of the grades, characteristics and test methods.

This framework covers the following essential characteristics:

— consistency at intermediate service temperature;

— consistency at elevated service temperature;

— viscoelastic behaviour;

— cohesion;

— resistance to flow and deformation;

— temperature sensitivity;

— strain recovery;

— durability of strain recovery;

— durability of consistency at low service temperature;

— durability of viscoelastic behaviour.

The characteristics of "adhesion" and "setting ability" are addressed by tests used on either the finished asphalt mixtures or on aggregate-bitumen combinations, i.e. EN 12697-1, EN 12697-11, EN 12697-12, EN 12697-26 [2 to 5], rather than tests on the bitumen itself.

"Adhesion" is addressed by tests carried out on the finished asphalt mixtures.

"Setting ability" is the return of the polymer modified binder to its normal semi-solid state as it returns to ambient temperature; this is a natural result of the cooling of the hot polymer modified bitumen after application and thus not addressed here.

The nomenclature of polymer modified bitumen comprises the nominal penetration range and the minimum softening point, e.g. PMB 45/80-60.

Kommittébeteckning: SIS/TK 254 (Järnväg, tunnelbana och spårväg)
Källa: CEN
Svarsdatum: den 18 jun 2020
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This document specifies laboratory test procedures to determine a high-frequency dynamic stiffness, "acoustic stiffness", of resilient components. The purpose is to provide data for assessment and specification of the acoustic performance of track components.

This document is applicable to complete track fastening assemblies and to pad components of fastening systems including both discrete and continuous fastening systems.

It is applicable to specimens of a single rail seat fastener.

It is applicable to the measurement of the dynamic transfer stiffness under a prescribed pre-load and the associated hysteretic damping loss factor.

It provides measurement methods and pre-load, excitation and frequency range conditions for application to ground borne and structure borne noise as well as for rolling noise.

It is not applicable to the measurement of the stiffness of pads and fastening assemblies under static or low frequency dynamic loading used for track mechanics and which is specified in EN 13146-9.

Ämnesområden: Omgivningsluft; Tunnelbyggnad
Kommittébeteckning: SIS/TK 423 (Luftkvalitet)
Källa: ISO
Svarsdatum: den 22 jun 2020
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This Standard describes methods for determining air speed and flow direction, carbon monoxide (CO), nitric oxide (NO) and nitrogen dioxide (NO2) concentrations and visibility in road tunnels using direct-reading instruments. This Standard specifically excludes requirements relating to instrument conformance testing.

Kommittébeteckning: SIS/TK 183 (Geoteknik och geokonstruktioner)
Källa: CEN
Svarsdatum: den 22 jun 2020
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This part of ISO 22282 establishes requirements for pumping tests as part of geotechnical investigation service in accordance with EN 1997-1 and EN 1997-2.

General rules on the planning and execution of geohydraulic field tests are covered by ISO 22282-1.

A pumping test consists in principle of:

— drawing down the piezometric surface of the groundwater by pumping from a well (the test well);

— measuring the pumped discharge and the water level in the test well and piezometers, before, during and after pumping, as a function of time.

This part of ISO 22282 applies to pumping tests performed on aquifers whose permeability is such that pumping from a well can create a lowering of the piezometric head within hours or days depending on the ground conditions and the purpose. It covers pumping tests carried out in soils and rock.

The tests concerned by this part of ISO 22282 are those intended for evaluating the hydrodynamic parameters of an aquifer and well parameters, such as:

— permeability of the aquifer,

— radius of influence of pumping,

— pumping rate of a well,

— response of drawdown in an aquifer during pumping,

— skin effect,

— well storage,

— response of recovery in an aquifer after pumping.

Kommittébeteckning: SIS/TK 269 (Information för byggande och förvaltning)
Källa: ISO
Svarsdatum: den 29 jun 2020
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This document provides requirements and recommendations for effective planning and design of security measures in the built environment.

The purpose of the document is to achieve optimal protection of assets against all kinds of malicious acts, while ensuring functional, financial and aesthetic aspects.

The document describes which methods and routines should be implemented in various stages of a building or civil engineering works project, as well as the competencies needed to achieve a good result.

This document is applicable to new builds, refurbishments and development projects by government and private entities, for various environments, buildings and infrastructure.

Kommittébeteckning: SIS/TK 198 (Vatten- och avloppssystem)
Källa: CEN
Svarsdatum: den 8 jul 2020
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This document is applicable to the trenchless construction, trenchless replacement techniques and testing of new drains and new sewers in the ground usually operating as gravity or pressure pipelines, formed using prefabricated pipes and their joints.

Renovation techniques for existing pressure and non-pressure systems are not covered by this document.

Methods of trenchless construction include:

— manned and unmanned techniques;

— steerable and non-steerable techniques.

Mining or tunnelling (e.g. in situ construction or the use of prefabricated segments) are not covered by this document although some parts may apply to these methods.

Requirements for associated pipeline installation work other than trenchless construction, e.g. for manholes and inspection chambers, are not covered by this document and are specified in EN 1610. This also applies to pipes that are subsequently installed within entry and exit shafts/pits.