Perencanaan Atap Perencanaan Atap

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Bab 3 Perencanaan Atap

Panjang ii’ = i’k = 0,468 m  Luas bb’rqc’c = ½ bb’ + cc’ 7-8 + ½ b’r + c’q 7-8 = ½ 1,875 + 1,406 0,9 + ½ 3,741 + 3,272 0,9 = 4,632 m 2  Luas cc’qoe’e = ½ cc’ + ee’ 5-7 + ½ c’q + e’o 5-7 = ½ 1,406+0,468 2 .0,9 + ½ 3,272 +2,3432 .0,9 = 6,740 m 2  Luas ee’omg’gff’ = ½ 4-5 . ee’ + ½ e’o + g’m 3-5 + ½ ff’ + gg’ 3-5 =½×0,9×0,468+½2,343+1,4060,9 +½1,875+1,4060,9 = 3,374 m 2  Luas gg’mki’i = ½ gg’ + ii’ 1-3 × 2 = ½ 1,406+0,468 2 . 0,9 × 2 = 3,373 m 2  Luas jii’k = ½ × ii’ × j1 × 2 = ½ × 0,468 × 0,9 × 2 = 0,421 m 2

3.3.3. Perhitungan Pembebanan Jurai

Data-data pembebanan : Berat gording = 11 kgm Berat penutup atap = 50 kgm 2 Berat plafon dan penggantung = 18 kgm 2 Berat profil kuda-kuda = 25 kgm commit to user 30 Tugas Akhir Perencanaan Struktur Gedung Restoran 2 Lantai

Bab 3 Perencanaan Atap

1 2 3 4 15 13 12 11 10 9 5 6 7 8 14 P1 P2 P3 P4 P5 P9 P8 P7 P6 Gambar 3.5. Pembebanan jurai akibat beban mati

a. Beban Mati

1 Beban P1 a Beban Gording = berat profil gording × panjang gording bb’r = 11 × 1,875+3,741 = 64,776 kg b Beban Atap = luasan aa’sqc’c × berat atap = 12,239 × 50 = 611,95 kg c Beban Plafon = luasan bb’rqc’c’ × berat plafon = 4,632 × 18 = 83,376 kg d Beban Kuda-kuda = ½ × btg 1 + 5 × berat profil kuda-kuda = ½ × 2,652 + 2,864 × 25 = 68,95 kg e Beban Plat Sambung = 30 × beban kuda-kuda = 30 × 68,95 = 20,685 kg f Beban Bracing = 10 × beban kuda-kuda = 10 × 68,95 = 6,895 kg 2 Beban P2 a Beban Gording = berat profil gording × panjang gording dd’p = 11 × 0,937+2,812 = 28,983 kg commit to user 31 Tugas Akhir Perencanaan Struktur Gedung Restoran 2 Lantai

Bab 3 Perencanaan Atap

b Beban Atap = luasan cc’qoe’e × berat atap = 8,101× 50 = 405,05 kg c Beban Kuda-kuda = ½ × btg 5 + 9 + 10 + 6 × berat profil kuda-kuda = ½ × 2,864 + 1,083 + 2,864 + 2,864 × 25 = 120,937 kg d Beban Plat Sambung = 30 × beban kuda-kuda = 30 × 120,937 = 36,281 kg e Beban Bracing = 10 × beban kuda-kuda = 10 × 120,937 = 12,094 kg 3 Beban P3 a Beban Gording = berat profil gording × panjang gording ff’n = 11 × 1,875+1,875 = 41,25 kg b Beban Atap = luasan ee’omg’gff’ × berat atap = 4,042 × 50 = 202,1 kg c Beban Kuda-kuda = ½ × btg 6 + 11 + 12 + 7 × berat profil kuda-kuda = ½ × 2,864 + 2,165 + 3,423 + 2,864 × 25 = 146,963 kg d Beban Plat Sambung = 30 × beban kuda-kuda = 30 × 146,963 = 47,089 kg e Beban Bracing = 10 × beban kuda-kuda = 10 × 146,963 = 15,696 kg 4 Beban P4 a Beban Gording = berat profil gording × panjang gording hh’l = 11 × 0,937+0,937 = 20,614 kg b Beban Atap = luasan gg’mki’i × berat atap = 2,018 × 50 = 100,9 kg c Beban Kuda-kuda = ½ × btg 7 + 13 + 15 + 8 × berat profil kuda-kuda = ½ × 2,864 + 3,226 + 4,193 + 2,864 × 25 = 164,338 kg commit to user 32 Tugas Akhir Perencanaan Struktur Gedung Restoran 2 Lantai

Bab 3 Perencanaan Atap