673826_perhitungan Tulangan Pelat Lantai.docx

2.3 Perhitungan Tulangan Pelat Lantai Diameter Tulangan

= 10 mm

Jarak antar tulangan sumbu x = 200 mm Jarak antar tulangan sumbu y = 200 mm Jumlah tulangan sumbu x area 1 = 98 tulangan x 2 tulangan = 196 Jumlah tulangan sumbu x area 2 = 36 tulangan x 2 tulangan = 72 Jumlah tulangan sumbu y area 1 = 21 tulangan x 4 tulangan = 84 Jumlah tulangan sumbu y area 2 = 21 tulangan x 2 tulangan = 42 Jumlah tulangan sumbu y area 3 = 71 tulangan x 6 tulangan = 246

2.4.1 Arah Memendek (y) 1. Tulangan Atas Lapis 1 ( Area 1 )

d sengkang = 10 mm

= Jarak as ke as – Lebar balok + 2(selimut beton + dsengkang + rtulangan balok) + 1

(2(6𝐷 + 4 𝜋(𝐷𝑝𝑒𝑛 + 2𝑑𝑠𝑒𝑛𝑔𝑘𝑎𝑛𝑔) + (80 − 𝐷𝑝𝑒𝑛 − 2𝑑𝑠𝑒𝑛𝑘𝑎𝑛𝑔) + 3 8

𝜋(𝐷𝑝𝑒𝑛 + 2𝑑𝑠𝑒𝑛𝑔𝑘𝑎𝑛𝑔)) 1

= 4000 − 350 + 2(40 + 10 + 11) + (2(60 + 4 𝜋(38,1 + 20) + 3

(80 − 38,1 − 20) + 𝜋(38,1 + 20)) 8 = 3650 + 122 + 391,8425 = 4163,8425 mm ≈ 4164 mm = 4,164 m

2. Tulangan Atas Lapis 1 ( Area 1 )

d sengkang = 10 mm

= Jarak as ke as – Lebar balok + 2(selimut beton + dsengkang + 3

rtulangan balok) + (2(6𝐷 + 8 𝜋(𝐷𝑝𝑒𝑛 + 2𝑑𝑠𝑒𝑛𝑔𝑘𝑎𝑛𝑔)) = 4000 − 350 + 2(40 + 10 + 11) + 2(60 + 68,4) = 4028,8 𝑚𝑚 ≈ 4028 𝑚𝑚 = 4,028 𝑚

3. Tulangan Atas Lapis 1 ( Area 1 )

diameter tulangan = 10 mm

diameter tulangan = 10 mm

= Jarak as ke as – Lebar balok + 2(selimut beton + dsengkang + 3

rtulangan balok) + (2(6𝐷 + 8 𝜋(𝐷𝑝𝑒𝑛 + 2𝑑𝑠𝑒𝑛𝑔𝑘𝑎𝑛𝑔)) + 40D = 8000 − 350 + 2(40 + 10 + 11) + 2(60 + 68,4) + 400 = 15428.8 𝑚𝑚 ≈ 15429 𝑚𝑚 = 15,429 𝑚 a. Tulangan a = 12 𝑚𝑒𝑡𝑒𝑟 b. Tulangan b = 3,429 𝑚𝑒𝑡𝑒𝑟 4. Tulangan Bawah Lapis 1 ( Area 1 )

diameter tulangan = 10 mm diameter tulangan = 10 mm

= Jarak as ke as – Lebar balok + 2(selimut beton + dsengkang + rtulangan balok) + 1

(2(6𝐷 + 4 𝜋(𝐷𝑝𝑒𝑛 + 2𝑑𝑠𝑒𝑛𝑔𝑘𝑎𝑛𝑔) + (110 − 𝐷𝑝𝑒𝑛 − 2𝑑𝑠𝑒𝑛𝑘𝑎𝑛𝑔) + 3 8

𝜋(𝐷𝑝𝑒𝑛 + 2𝑑𝑠𝑒𝑛𝑔𝑘𝑎𝑛𝑔)) + 40D 1

= 15000 − 350 + 2(40 + 10 + 11) + (2(60 + 4 𝜋(38,1 + 20) + 3

(110 − 38,1 − 20) + 𝜋(38,1 + 20)) + 400 8

= 14772 + 2(60 + 45,6 + 51,9 + 68,4) + 400 = 15623,8 mm ≈ 15624 mm = 15,624 m a. Tulangan a = 11 𝑚𝑒𝑡𝑒𝑟 b. Tulangan b = 4,624 𝑚𝑒𝑡𝑒𝑟 5. Tulangan Atas Lapis 1 ( Area 3 )

diameter tulangan = 10 mm

diameter tulangan = 10 mm

diameter tulangan = 10 mm

= Jarak as ke as – Lebar balok + 2(selimut beton + dsengkang + 3

rtulangan balok) + (2(6𝐷 + 8 𝜋(𝐷𝑝𝑒𝑛 + 2𝑑𝑠𝑒𝑛𝑔𝑘𝑎𝑛𝑔)) + ( 2 x 40D ) = 30000 − 350 + 2(40 + 10 + 11) + 2(60 + 68,4) + 800 = 30828,8 𝑚𝑚 ≈ 30829 𝑚𝑚 = 30,829 𝑚 a. Tulangan a = 12 𝑚𝑒𝑡𝑒𝑟 b. Tulangan b = 12 𝑚𝑒𝑡𝑒𝑟 c. Tulangan c = 6,829 𝑚𝑒𝑡𝑒𝑟

6. Tulangan Bawah Lapis 1 ( Area 3 )

diameter tulangan = 10 mm diameter tulangan = 10 mm diameter tulangan = 10 mm

= Jarak as ke as – Lebar balok + 2(selimut beton + dsengkang + rtulangan balok) + 1

(2(6𝐷 + 𝜋(𝐷𝑝𝑒𝑛 + 2𝑑𝑠𝑒𝑛𝑔𝑘𝑎𝑛𝑔) + (110 − 𝐷𝑝𝑒𝑛 − 2𝑑𝑠𝑒𝑛𝑘𝑎𝑛𝑔) + 4

3 8

𝜋(𝐷𝑝𝑒𝑛 + 2𝑑𝑠𝑒𝑛𝑔𝑘𝑎𝑛𝑔)) + ( 2 x 40D ) 1

= 30000 − 350 + 2(40 + 10 + 11) + (2(60 + 4 𝜋(38,1 + 20) + 3

(110 − 38,1 − 20) + 𝜋(38,1 + 20)) + 800 8 = 29772 + 2(60 + 45,6 + 51,9 + 68,4) + 800 = 31023,8 mm ≈ 31024 mm = 31,024 m a. Tulangan a = 11 𝑚𝑒𝑡𝑒𝑟 b. Tulangan b = 12 𝑚𝑒𝑡𝑒𝑟 c. Tulangan c = 8,024 𝑚𝑒𝑡𝑒𝑟

2.4.2 Arah Memanjang (x) 1. Tulangan Bawah Lapis 2 ( Area 1 )

d sengkang = 10 mm

b

a

d sengkang = 10 mm

a. Tulangan a = 11 𝑚𝑒𝑡𝑒𝑟 b. Tulangan b = 12 meter

2. Tulangan Atas Lapis 2 ( Area 1 )

b

d sengkang = 10 mm a

d sengkang = 10 mm

a. Tulangan a = 12 meter b. Tulangan b = 12 meter

3.

Tulangan Bawah Lapis 2 ( Area 2 )

b

d sengkang = 10 mm a

d sengkang = 10 mm

a. Tulangan a = 11 𝑚𝑒𝑡𝑒𝑟 b. Tulangan b = 12 meter

4. Tulangan Atas Lapis 2 ( Area 2 )

b

d sengkang = 10 mm a

d sengkang = 10 mm

a. Tulangan a = 12 meter b. Tulangan b = 12 meter

Tabel Bar Bending Scheduler Tulangan Pelat Lantai

No. Kode

Tipe

PELAT LANTAI Diameter Total Panjang Total Panjang Jumlah (mm) Teoritis (m) (m)

1

016

aba

8

6,533

166

1084,478

2

017

a

8

6,467

166

1073,522

ab

8

7,584

510

3867,84

c

8

11,69

510

5961,9

3

ba

8

7,584

510

3867,84

4

ab

8

7,538

510

3844,38

c

8

11,69

510

5961,9

ba

8

7,583

510

3867,33

3 018

019 4

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