Tactile paving surface indicators produced from concrete, clay and stone Ingestion-build-207047 It does not include requirements

It does not include requirements relating to chemical composition

They are intended to provide a means to illustrate process computer and/or shared display/control functions in the field of process measurement and control and may be used separately or combined with the symbols of BS 1646‑1 and BS 1646‑2

The operating influences considered in BS EN 60654-3 are limited to those which may directly affect the performance of process measurement and control systems

BS EN 61249-2-23 also provides you with methods for properties such as flexural strength

Tactile paving surface indicators produced from concrete, clay and stone Ingestion-build-207047 It does not include requirements1 Scope This document specifies the nominal dimensions for surface profile features and patterns for the surfaces of pedestrian paving units, used to convey information for visually impaired people. It applies to paving units made of concrete, clay and stone. This document does not specify requirements for visibility (colour, luminance contrast or profile) except where this visibility is provided by the tactile paving surface indicator. It does not