Testing concrete - Procedure and terminology for the petrographic examination of hardened concrete1 Scope This British Standard describes procedures and terminology for the examination of hardened concrete and mortar. The procedures are intended to be performed by an appropriately qualified or experienced concrete petrographer. The principal application of the method described requires the use of a polarizing petrological microscope for the examination of concretes containing Portland and other cements. The petrographic procedures outlined are

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Note1: BS 7971-10 does not cover other protective features such as electrostatic

BS EN 14503 does not apply to:

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Some previously acceptable reference materials may not meet these more stringent requirements anymore

and false reject rate

centralized computer rooms and communications centres can still be found in many industrial and commercial operations

For inspection documents

This document describes RF transmission for fully digitalized broadcast and narrowcast (limited area distribution of broadcast) signals over FTTH