Period of testing. In order to check whether the surface continues to conform to the texture and voids content or sound absorption requirements stipulated in this standard, periodic testing of the surface shall be done at the following intervals: (a) For residual VC or sound absorption (α): When the surface is new: If the surface meets the requirements when new, no further periodical testing is required. If it does not meet the requirement when it is new, it may do so later because surfaces tend to become clogged and compacted with time;
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Sources: Agreement Concerning the Adoption of Harmonized Technical United Nations Regulations for Wheeled Vehicles, Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles, Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles
Period of testing. In order to check whether the surface continues to conform to the texture and voids content or sound absorption requirements stipulated in this standard, periodic testing of the surface shall be done at the following intervals:
(a) For residual VC voids content (VC) or sound absorption (α): When the surface is new: ; If the surface meets the requirements when new, no further periodical testing is required. If it does not meet the requirement when it is new, it may do so later because surfaces tend to become clogged and compacted with time;
(b) For texture depth (TD): When the surface is new; When the noise testing starts (NB: not before four weeks after laying); Then every twelve months.
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Sources: Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles, Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles
Period of testing. In order to check whether the surface continues to conform to the texture and voids content or sound absorption requirements stipulated in this standard, periodic testing of the surface shall be done at the following intervals:
(a) For residual VC voids content (VC) or sound absorption (α): When the surface is new: If the surface meets the requirements when new, no further periodical testing is required. If it does not meet the requirement when it is new, it may do so later because surfaces tend to become clogged and compacted with time;
(b) For texture depth (TD): When the surface is new: When the noise testing starts (Note: not before four weeks after laying); Then every twelve months.
Appears in 1 contract
Sources: Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles
Period of testing. In order to check whether the surface continues to conform to the texture and voids content or sound absorption requirements stipulated in this standard, periodic testing of the surface shall be done at the following intervals:
(a) For residual VC voids content (VC) or sound absorption (α): When the surface is new: If the surface meets the requirements when new, no further periodical testing is required. If it does not meet the requirement when it is new, it may do so later because surfaces tend to become clogged and compacted with time;
(b) For texture depth (TD): When the surface is new: When the noise testing starts (Note: Not before four weeks after laying); Then every twelve months.
Appears in 1 contract
Sources: Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles
Period of testing. In order to check whether the surface continues to conform to the texture and voids content or sound absorption requirements stipulated in this standard, periodic testing of the surface shall be done at the following intervals:
(a) For residual VC voids content or sound absorption (α): absorption: When the surface is new: If ; if the surface meets the requirements when new, no further periodical testing is required. If it does not meet ;
(b) For texture depth (TD): When the requirement when it surface is new, it may do so later because surfaces tend to become clogged and compacted with time;; when the sound testing starts (Note: Not before four weeks after laying); then every 12 months.
Appears in 1 contract
Period of testing. In order to check whether the surface continues to conform to the texture and voids content or sound absorption requirements stipulated in this standard, periodic testing of the surface shall be done at the following intervals:
(a) For residual VC voids content or sound absorption (α): absorption: When the surface is new: If ; if the surface meets the requirements when new, no further periodical testing is required. If it does not meet ;
(b) For texture depth (TD): When the requirement when it surface is new, it may do so later because surfaces tend to become clogged and compacted with time;; when the sound testing starts (Note: Not before 4 weeks after laying); then every 12 months.
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