Clause 2.3 Wall And Slab Thickness of Thickness Of SS And NS

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Clause 2.3 Wall And Slab Thickness of Thickness Of SS And NS

TRSS 2021

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2.3.1 SS Wall Thickness

The thickness of SS wall varies accordingly to SS clear height and the setback distance. The thickness shall comply with the following requirements:

a. The minimum SS wall thickness shall be in accordance with TABLE 2.3.1.

b. Wall thickness of any SS or NS within the SS tower shall not be less than the wall thickness of the SS or NS above it.

c. Internal common wall between 2 adjacent SS shall be at least 200mm thick. Refer to FIGURE 2.3.1.

d. The minimum internal common wall thickness between SS and enclosed NS shall be 200mm. The minimum internal common wall thickness between SS and non-enclosed NS shall be 300mm. Refer to FIGURE 2.12.2(i).

e. For internal SS and S/C SS length more than 8000mm, an additional 25mm thickness shall be provided to the affected SS wall. Refer to FIGURE 2.2.1(a) and 2.2.1(b).

2.3.2 Slab Thickness of SS and Enclosed NS

The minimum dimensions of members forming part of the SS tower shall be as follows:

a. Ceiling slab of top-most SS or S/C SS or scissor S/C SS – 300mm. Refer to FIGURE 2.3.2.

b. Slab between two SS or S/C SS or scissor S/C SS – 200mm. Refer to FIGURE 2.3.2.

c. Floor slab of bottom-most SS/NS in contact with soil – 300mm. Refer to FIGURE 2.3.2.

d. Slab between SS or S/C SS and enclosed NS - 200mm - Refer to FIGURE 2.3.2.

2.3.3 Slab Thickness of SS and Non-Enclosed NS

a. Floor slab of bottom-most SS that is directly supported by non-enclosed NS or NS wall - 300mm. Refer to FIGURE 2.3.2.

b. Ceiling slab of SS which is below non-enclosed NS or NS wall - 300mm.

c. Slab between two non-enclosed NS - 300mm.

TABLE 2.3.1 : REQUIRED MINIMUM SS AND NS WALL THICKNESS
Storey Height (SH) (mm)	SS/NS Clear Height (Ht) (mm)	Setback Distance of SS Wall (mm)	Wall Thickness (mm)
SH ≤ 4000	2400 ≤ Ht ≤ 3400	≤ 6000	300
	2400 ≤ Ht ≤ 3400	> 6000	250
	3400 < Ht ≤ 3900	≤ 6000	325
	3400 < Ht ≤ 3900	> 6000	275
4000 < SH ≤ 6000	2400 ≤ Ht ≤ 3400	≤ 7000	300
	2400 ≤ Ht ≤ 3400	> 7000	250
	3400 < Ht ≤ 3900	≤ 7000	325
	3400 < Ht ≤ 3900	> 7000	275
6000 < SH ≤ 8000	2400 ≤ Ht ≤ 3400	≤ 8000	300
	2400 ≤ Ht ≤ 3400	> 8000	250
	3400 < Ht ≤ 3900	≤ 8000	325
	3400 < Ht ≤ 3900	> 8000	275
8000 < SH ≤ 10000	2400 ≤ Ht ≤ 3400	≤ 9000	300
	2400 ≤ Ht ≤ 3400	> 9000	250
	3400 < Ht ≤ 3900	≤ 9000	325
	3400 < Ht ≤ 3900	> 9000	275

TABLE 2.3.1 : REQUIRED MINIMUM SS AND NS WALL THICKNESS

FIGURE 2.3.1: INTERNAL COMMON WALL BETWEEN TWO SS

FIGURE 2.12.2(i): SS WITH NS COMPARTMENT WITH LAST BOTTOM-MOST SS DOOR ON 300MM THICK INTERNAL WALL

FIGURE 2.2.1(a): TYPICAL LAYOUT OF SS

FIGURE 2.2.1(b): TYPICAL LAYOUT OF S/C SS

FIGURE 2.3.2: SS TOWER SHOWING SS AND NS (WITH ENCLOSED AND NON-ENCLOSED NS WALL) SLAB THICKNESS

FIGURE 2.3.2: SS TOWER SHOWING SS AND NS (WITH ENCLOSED AND NON-ENCLOSED NS WALL) SLAB THICKNESS

FIGURE 2.3.2: SS TOWER SHOWING SS AND NS (WITH ENCLOSED AND NON-ENCLOSED NS WALL) SLAB THICKNESS

FIGURE 2.3.2: SS TOWER SHOWING SS AND NS (WITH ENCLOSED AND NON-ENCLOSED NS WALL) SLAB THICKNESS

FIGURE 2.3.2: SS TOWER SHOWING SS AND NS (WITH ENCLOSED AND NON-ENCLOSED NS WALL) SLAB THICKNESS

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TABLE 2.3.1 : REQUIRED MINIMUM SS AND NS WALL THICKNESS

FIGURE 2.3.1: INTERNAL COMMON WALL BETWEEN TWO SS

FIGURE 2.12.2(i): SS WITH NS COMPARTMENT WITH LAST BOTTOM-MOST SS DOOR ON 300MM THICK INTERNAL WALL

FIGURE 2.2.1(a): TYPICAL LAYOUT OF SS

FIGURE 2.2.1(b): TYPICAL LAYOUT OF S/C SS

FIGURE 2.3.2: SS TOWER SHOWING SS AND NS (WITH ENCLOSED AND NON-ENCLOSED NS WALL) SLAB THICKNESS

FIGURE 2.3.2: SS TOWER SHOWING SS AND NS (WITH ENCLOSED AND NON-ENCLOSED NS WALL) SLAB THICKNESS

FIGURE 2.3.2: SS TOWER SHOWING SS AND NS (WITH ENCLOSED AND NON-ENCLOSED NS WALL) SLAB THICKNESS

FIGURE 2.3.2: SS TOWER SHOWING SS AND NS (WITH ENCLOSED AND NON-ENCLOSED NS WALL) SLAB THICKNESS

FIGURE 2.3.2: SS TOWER SHOWING SS AND NS (WITH ENCLOSED AND NON-ENCLOSED NS WALL) SLAB THICKNESS