BS EN 17282:2020 pdf free.Railway applications一Infrastructure 一Under ballast mats.
BS EN 17282 This document is applicable to under ballast mats used in ballasted track and defines the test procedures and their evaluation criteria.This document provides particular information in the following areas:-test methods, test arrangements and evaluation criteria of under ballast mats;-data supplied by the purchaser and by the supplier;-definition of general process of design approval tests;definition of routine tests.This document defines the specific test procedures for under ballast mats:一stiffness tests;-fatigue tests;一tests for severe environmental conditions.This document also sets out procedures for testing fitness for purpose and provides information on quality monitoring as part of quality assurance procedures. This document does not, however, contain
requirements pertaining to the functions of under ballast mats. It is the responsibility of the purchaser to define these requirements and to choose the optional tests.This clause defines the objectives of tests and of demanded information about the UBM.The purchaser may define the test laboratory or validate the one proposed by the supplier.The purchaser decides the way to choose the test sample units. In order to be able to identify the UBM at a later date, the following values shall be indicated:一the mass per area (kg/ m2) of the product and all its components, see 6.3.1;一the results of a suitable material analysis as selected by the manufacturer and approved by the purchaser.The supplier shall provide sufficient data to satisfy the objectives of the tests and/or the provision of
requested information in respect of the UBM including: -the data sheet as described in Annex B;any transportation, storage and installation recommendations and procedures to preserve the material characteristics and original performance.Compliance with a given TC implies compliance with all lower TC except for results of the bedding modulus measurements.The essential rules to be complied with for the on-site storage and installation (i.e. handling, laying and
joining) of UBM shall be stated in a document drawn up by the supplier and validated by the purchaser. Proper storage and handling of UBM is intended to prevent damage from construction as well as ensure the safety of the staff and surrounding infrastructures. In particular, attention shall be given to the
following: storage conditions;  -risks of damage by vehicles (e.g heavy vehicles, narrow-wheeled vehicles, turning vehicles).BS EN 17282 pdf download.