Chimneys. Components. Concrete flue blocks Ingestion-build-134498 Chemical test methods

Chemical test methods

PAS 7070 specifies a repeatable

Tolerances of perpendicularity have been changed

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Chimneys. Components. Concrete flue blocks Ingestion-build-134498 Chemical test methods1 Scope This European Standard specifies the materials, dimensional and performance requirements for precast concrete flue blocks as defined in Clause 3 for use in deleted text chimneys. The flue blocks may be of single wall or multi wall construction. The standard does not apply to flue blocks with back ventilation. This standard does not cover products designated wet (W) in conjunction with corrosion class 3. The standard also specifies a type of