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Clause 2.7 NS in SS Tower

TRSS 2021

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2.7.1 Aggregate Wall Height of NS

a. Several NS can be stacked one on top of the other within an SS tower, without the need for NS floor slab to be connected to external floor slab, provided that the aggregate wall height of the NS does not exceed 12m. Refer to FIGURE 2.7.1.

b. Aggregate wall height of NS refers to the sum of the height(s) of NS between two levels of the SS tower where the full external perimeter of the SS tower at those levels are structurally connected by floor slabs or tie beams to the structural frame of the building. Where tie beams are used, they shall be designed with at least equivalent stiffness to the floor slabs.

2.7.2 Shielded and Unshielded NS Walls

The relevant architectural technical requirements of the shielded or unshielded NS Walls as stipulated in Clause 3.3.3 & 3.3.4 shall be complied with.