Tebal perkerasan untuk jalan 2 lajur 2 arah, data lalu lintas tahun 2015 seper
dibawah ini, dan jalan direncanakan dengan umur rencana UR = 12 t ahun. Jika jala
tersebut dibuka tahun 2019 (pertumbuhan lalu lintas (i) selama pembanguna adalah 6% per tahun) 2.
DATA-DATA : Kendaraan ringan 2 ton :
1096 kendaraan
Bus 8 ton
:
396 kendaraan
Truck 2 as 13 ton
:
56 kendaraan
Truck 3 as 20 ton
:
39 kendaraan
Truck 5 as 30 ton
:
16 kendaraan
LHR 2015 = 1603 kendaraan/hari Perkembangan lalu lintas selama masa pelayanan adalah i = 9% 3.
BAHAN-BAHAN PERKERASAN You're Reading a Preview Asbuton (MS454)
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Batu pecah (CBR 60)
Sirtu (CBR 30) Download With Free Trial
Penyelesaian 1. Lalu Lintas a. Jumlah Lajur Kendaraan Sign up to vote on this title
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LAMPIRAN TUGAS PKN
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Tugas 1 Perancangan Perkerasan Jalan Ray
b. Koefisien Distribusi Lajur (C)
c. Angka Ekivalen Beban Sumbu Kendaraan (E)
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d. Lalu Lintas Harian Rata-rata dan Lintas Ekivalen
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LEP
LEA Jmh
Jmh
1383.675
0.5
0.00046
0.318
3891.813
0.5
0.00046
0.895
499.941
0.5
0.15924
39.805
1406.166
0.5
0.15924
111.959
70.699
0.5
1.06482 37.641
198.852
0.5
1.06482 105.871
49.237
0.5
1.03751 25.542
138.486
0.5
1.03751 71.8403
20.200
0.5
1.03751
56.815
0.5
1.03751
10.479 113.785
320.038
LET
LER Jmh
LEP
LEA
Jmh
LET
UR
216.911 113.785 320.038
2 9.473
260.294 216.911
12
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2. Daya Dukung Tanah Dasar (DDT)
CBR tanah dasar = 5% Download With Free Trial DDT = 4.30 x log (CBR) + 1.7 = 4.30 x log (5) + 1.7 = 4.706 3. Faktor Regional (FR) Sign up to vote on this title
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4. Indeks Permukaan (IP) a. Indeks permukaan pada akhir umur rencana (IP t)
b. Indeks permukaan pada awal umur rencana (IP 0)
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5. Mencari ITP
8
Dari nomogram diatas, dengan DDT = 4.706, LER = 260.294, dan FR = 1. didapat nilai ITP = 8
You're Reading a Preview 6. Koefisien Kekuatan Relatif (a)
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7. Menetapkan tabel perkerasan
Dari tabel didapatkan D2 = 20 cm Dan untuk D 3 ditetapkan setebal = 10 cm ITP
= a1D1 + a2D2 + a3D3
8
= 0.28 D1 + 0.12 x 20 + 0.11 x 10
D1
= 16.071 cm
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Sehingga, didapat susunan perkerasannya sebagai berikut: Download With = 16.071 cmFree Trial
