pembebanan portal (print)

FAKULTAS TEKNIK SIPIL DANPERENCANAAN

UNIVERSITAS KRISTEN PETRA

TUGAS STRUKTUR BAJA Halaman : 53

BAGIAN STRUKTUR:

PEMBEBANAN PORTAL

NRP : 2140915921409169

PERHITUNGAN

BAB VIII

PEMBEBANAN PORTAL

VIII.1.Pembebanan Beban Mati ( bentang 20 m )

Beban merata

Berat sendiri atap = kg/m2 = 23.60 kg/m

Berat sendiri gording = = 42.807 kg/m

Alat pengikat = 10% × (23.60 + 42.807) = 6 . 64 kg/m +

= 73.05 kg/m

Dari Kantilever Atap

Reaksi Gording = 82.17 kg (Bab II–Gording)

B.S. kantilever = = 9.63 kg +

= 91.8 kg

Momen kantilever = = 92.621 kgm

Berat Sendiri Rafter = 41.4 kg/m

VIII.2. Pembebanan Beban Mati ( bentang 15 m )

Beban merata

Berat sendiri atap = kg/m2 = 23.60 kg/m

Berat sendiri gording = = 45.06 kg/m

Alat pengikat = 10% × (23.60 + 45.06) = 6.866 kg/m +

= 75.526 kg/m




BAGIAN STRUKTUR:

PEMBEBANAN PORTAL

NRP : 2140915921409169

PERHITUNGAN


Reaksi Gording = 82.17 kg (Bab II– Gording)

B.S. kantilever = = 9.63 kg +

= 91.8 kg

Momen kantilever = = 92.621 kgm

Berat Sendiri Rafter = 41.4 kg/m

Gambar VIII.1

PEMBEBANAN MATI PORTAL

VIII.3.Pembebanan Beban Hidup Portal ( bentang 20 m dan 15 m )

Beban merata

Beban air hujan = kg/m2 = 124.23 kg/m





BAGIAN STRUKTUR:

PEMBEBANAN PORTAL

NRP : 2140915921409169

PERHITUNGAN

Beban hidup total = 340 kg (Bab VII-Kantilever)

Momen kantilever = = 340 kgm

Gambar VIII.2

PEMBEBANAN HIDUP PORTAL

VIII.4.Pembebanan Beban Angin (PPIUG 1983 Tabel 4.1)

Arah angin dari kiri bangunan.

Atap menghadap angin = ( 0.02 α – 0.4 ) × beban angin × jarak portal

= (0.02 × 15 – 0.4 ) × 25 × 6

= –15 kg/m

membelakangi angin = –0.4 × beban angin × jarak portal

= –0.4 × 25 x 6

= –60 kg/m

Dinding menghadap angin = 0.9 × beban angin × jarak portal

= 0.9 × 25 x 6

= 135 kg/m




BAGIAN STRUKTUR:

PEMBEBANAN PORTAL

NRP : 2140915921409169

PERHITUNGAN

membelakangi angin = –0.4 × beban angin × jarak portal

= –0.4 × 25 x 6

= –60 kg/m

Gambar VIII.3

PEMBEBANAN ANGIN PORTAL

pembebanan portal (print)

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