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Clause 6.1 General Clause 6.2 Structural Works Clause 6.3 HS Door Clause 6.4 Peacetime Requirement of Ventilation Sleeves Clause 6.5 Commissioning Requirements

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Clause 6.4 Peacetime Requirement of Ventilation Sleeves

TRHS 2023

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For ventilation purposes during peacetime, at least 25% of total area of the two ventilation openings shall be kept uncovered.