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Clause 4.1 General Clause 4.2 Position Clause 4.3 Accessibility of Ventilation Sleeves Clause 4.4 Fragmentation Plate

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Clause 4.3 Accessibility of Ventilation Sleeves

TRHS 2023

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4.3.1 Clearance in front of and around Fragmentation Plate

The minimum clearance from the fragmentation plate to RC beam or structure or service shall be 50mm. Where the RC beam or structure or service is fronting the fragmentation plate of ventilation sleeve, the clear distance between them shall be at least 500mm. See FIGURE 4.3.1.

4.3.2 False Ceiling below Ventilation Sleeves

Where false ceilings are provided outside the HS and below the ventilation sleeves, there shall be perforated access panels of minimum size of 600mm x 600mm positioned directly below each ventilation sleeve. See FIGURE 4.3.2.