Kommittébeteckning: SIS/TK 202/AG 05 (Vägytans egenskaper)
Källa: CEN
Svarsdatum: den 24 jun 2024
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ISO 13473-5:2009 specifies procedures for determining the average depth or level of pavement surface megatexture by measuring the profile curve of a surface and calculating megatexture descriptors from this profile. The technique is designed to give meaningful and accurate measurement and description of pavement megatexture characteristics for various purposes. Since there is an overlap between megatexture and the surrounding ranges, the megatexture descriptors unavoidably have a certain correlation with corresponding measures in those ranges. ISO 13473-5:2009 specifies measurements and procedures which are in relevant parts compatible with those in ISO 13473-1, ISO 8608 and EN 13036-5.

Kommittébeteckning: SIS/TK 110 (Akustik och buller)
Källa: ISO
Svarsdatum: den 8 jul 2024
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This document specifies a test method for measuring in situ the sound absorption coefficient of road surfaces for the one-third-octave band frequencies ranging from 250 Hz to 1 600 Hz under normal incidence conditions. If necessary for practical applications the diameter of the tube can be reduced to 80 mm. This will increase the upper boundary of the frequency range to 2 000 Hz one-third-octave band (see 5.4) but reduces the area under test. The test method is intended for the following applications: — determination of the sound absorption coefficient (and, if of interest, also the complex acoustical impedance) of semi-dense to dense road surfaces; — determination of the sound absorption properties of test tracks according to ISO 10844[2] or other similar standards and test surfaces defined in national and international type approval regulations for road vehicles and their tyres; — verification of the compliance of the sound absorption coefficient of a road surface with designspecifications or other requirements.

Ämnesområden: Körbana
Kommittébeteckning: SIS/TK 202/AG 08 (Bitumen)
Källa: CEN
Svarsdatum: den 16 jul 2024
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This document specifies a method for the determination of the adhesivity of cut-back and fluxed bituminous binders coated onto aggregate when immersed in water. The method can be used with a reference aggregate. In that case, it measures the intrinsic adhesion behaviour of a cut-back and fluxed bituminous binder. The method can also be used with a specific aggregate as used on a job site. WARNING - The use of this document can involve hazardous materials, operations and equipment. This document does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this document to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. For environmental reasons and to reduce emissions to air, water and soil, it is recommended to limit the use of products, solvents and energy to the minimum required for a valid test result.

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Detta dokument har följande omfattning:

a) riktlinjer och vägledning för att säkerställa korrekt planering och skydd av träd vid arbeten samt främja träds överlevnad och kondition.

b) utformning av trädskyddsåtgärder, bedömning, planering och åtgärder för att minska negativ inverkan på träd som direkt eller indirekt berörs av arbeten.

c) rekommendationer för att undvika eller minimera skador på trädens rötter, stammar och kronor under byggaktiviteter och andra arbeten.

d) definitioner av relevanta termer och begrepp som används inom området arbeten vid träd.