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Clause 3.1 General Clause 3.2 Materials Clause 3.3 Analysis Clause 3.4 Member Dimensions and Reinforcement Requirements Clause 3.5 Detailing of SS Tower Clause 3.6 Penetration Of Services

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Clause 3.4 Member Dimensions and Reinforcement Requirements

TRSS 2021

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3.4.1 Member Dimensions

The minimum member size of SS and NS shall be as stipulated in Chapter 2 - Architectural Design.

3.4.2 Reinforcement Requirements

All diameters of reinforcement specified hereinafter shall refer to minimum fabric mesh or bar diameters. All spacing of reinforcement specified hereinafter shall refer to maximum spacing of reinforcement in both directions.

3.4.2.1 Wall Reinforcements of SS and NS

a. Minimum Reinforcement in SS or NS walls - refer to TABLE 3.4.2.1.

b. Reinforcements at both faces of the internal common wall shall be H10-100 c/c in both faces. The shear links shall be H8-600 c/c in both directions.

c. Shielding wall in front of SS door:

Reinforcements at both faces of the wall shall be minimum H10-200 c/c. The shear link with L-bend at two ends shall be H8 at 600 c/c in both directions.

3.4.2.2 Reinforcements of SS and NS slabs

a. Intermediate SS/NS slabs and slabs/waists of staircase SS/NS:

Top and bottom layer of slab reinforcements shall be H10-100 c/c in both directions. The shear links shall be H8-600 c/c in both directions.

b. Ceiling slab of top-most SS:

i. Reinforcements at both external face and internal face of the slab shall be H13- 100 c/c (both directions).

ii. The shear links shall be H8-600 c/c in both directions.

c. Floor slab of bottom-most SS or NS and floor slab of NS located above a SS:

i. Slab reinforcements at both external face and internal face shall be H13-100 c/c (both directions).

ii. The shear links shall be H8-600 c/c in both directions.

d. Ceiling slab outside the SS tower which is immediately above SS door:

The minimum ceiling slab shall be constructed of 150mm thick reinforced concrete. The reinforcement shall consist of two layers of reinforcement (top and bottom) at H10-100 c/c in both directions. These top and bottom layers of reinforcement bars shall be continuous or anchored to the slab of SS with tension anchorage length.

e. Floor slab outside SS tower:

The reinforcements of every floor slab immediately outside SS tower walls shall be structurally connected to the SS tower.

f. SS slab which is integrated with pile-cap/footing:

For SS slab integrated with the pile-cap or footing of 500mm thick or more, shear links is not required. The maximum spacing of main reinforcement shall be 200mm c/c.