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Pipes passing through concrete or cinder walls and floors or other corrosive material shall be protected against external corrosion by a protective sheathing or wrapping or other means that will withstand any reaction from the lime and acid of concrete, cinder or other corrosive material. Sheathing or wrapping shall allow for movement including expansion and contraction of piping. The wall thickness of the material shall be not less than 0.025 inch (0.64 mm).

Related Code Sections

305.1 General Regulations, Corrosion
Pipes passing through concrete or cinder walls and floors or other corrosive material shall be protected against external corrosion by a protective ...
305.1 General Regulations, Corrosion
Pipes passing through concrete or cinder walls and floors or other corrosive material shall be protected against external corrosion by a protective ...
502.9.2 Exhaust Systems, Corrosives
Where corrosive materials in amounts exceeding the maximum allowable quantity per control area are dispensed or used, mechanical exhaust ventilation ...
502.9.2 Exhaust Systems, Corrosives
Where corrosive materials in amounts exceeding the maximum allowable quantity per control area are dispensed or used, mechanical exhaust ventilation ...
502.9.2 Exhaust Systems, Corrosives
Where corrosive materials in amounts exceeding the maximum allowable quantity per control area are dispensed or used, mechanical exhaust ventilation ...