DAFTAR ISI Halaman ABSTRAK .............................................................................................................. i SUMMERY ............................................................................................................ ii DAFTAR ISI ....................................................................................................... iii DAFTAR TABEL .............................................................................................. vi DAFTAR GAMBAR ......................................................................................... vii DAFTAR LAMPIRAN ........................................................................................ ix BAB I PENDAHULUAN .....................................................................................1 1.1 Latar Belakang .......................................................................................1 1.2 Rumusan Masalah .................................................................................2 1.3 Batasan Masalah ....................................................................................3 1.4 Tujuan Penelitian ...................................................................................3 1.5 Manfaat Penelitian .................................................................................3 1.6 Lokasi Penelitian ...................................................................................4
BAB II TINJAUAN PUSTAKA ..........................................................................7 2.1 Instalasi Pencampuran Aspal Beton ......................................................7 2.1.1 Instalasi Pencampur Dengan Penakar (Batch Plant) .................7 2.1.2 Instalasi Pencampur Dengan Sistem Menerus (Continuous Plant) .......................................................................................16 2.2 Aspal Beton .........................................................................................19 2.3 Perencanaan Produksi ..........................................................................19 2.3.1 Hal-hal yang Menghambat Perencanaan Produksi ..................20 2.3.2 Perencanaan Bahan Baku ........................................................20 2.3.3 Perencanaan Peralatan .............................................................21 2.3.4 Perencanaan Sumber Daya Manusia .......................................22 2.4 Pengadaan Material .............................................................................22 2.5 Proses Produksi ...................................................................................23
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2.6 Persiapan Agregat ................................................................................24 2.6.1 Agregat ....................................................................................24 2.6.2 Agregat Pengisi (Filler) ...........................................................28 2.6.3 Aspal ........................................................................................28 2.7 Pengelolaan Material ...........................................................................33 2.7.1 Pengendalian Material .............................................................33 2.7.2 Pengaturan Persediaan .............................................................34 2.8 Penelitian terdahulu ...............................................................................39
BAB III METODE PENELITIAN ...................................................................43 3.1 Tahapan Penelitian ..............................................................................44 3.2 Tempat dan Waktu Penelitian .............................................................44 3.3 Metode Pengumpulan Data .................................................................44 3.4 Metode Analisis Data ..........................................................................44 3.4.1 Analisis Biaya ..........................................................................45 3.4.2 Penentuan Economic Order Quantity (EOQ) ............................45 3.4.3 Penentuan Safety Stock ............................................................45 3.4.4 Penentuan Titik Pemesanan Kembali (Reorder Point) dan Siklus Pemesanan ....................................................................46 3.5 Bagan Alir ...........................................................................................47
BAB IV ANALISIS DAN PEMBAHASAN .......................................................49 4.1 Kebutuhan Material .............................................................................. 49 4.1.1 Data Proporsi Campuran Perkerasan HRS ............................... 49 4.1.2 Data Kebutuhan Material Harian .............................................. 53 4.1.3 Total Stok Material untuk Bulan Juni-Juli 2018....................... 54 4.1.4 Jumlah Total Kebutuhan Material Bulan Juni-Juli 2018 .......... 54 4.2 Kapasitas Produksi ............................................................................... 55 4.3 Analisis Biaya Satuan Persediaan......................................................... 55
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4.3.1 Biaya Pembelian ...................................................................... 55 4.3.2 Biaya Pemesanan ...................................................................... 56 4.3.3 Biaya Penyimpanan .................................................................. 56 4.4 Analisis Jumlah Pesanan Optimum dengan Metode EOQ ................... 57 4.5 Analisis Cadangan Pengaman (Safety Stock) ....................................... 58 4.6 Analisis Titik Pemesanan Kembali (Reorder Point) ............................ 71 4.7 Penentuan Siklus Pemesanan................................................................ 72 BAB V PENUTUP ............................................................................................... 82 5.1 Kesimpulan ........................................................................................... 82 5.2 Saran ..................................................................................................... 83 DAFTAR PUSTAKA .........................................................................................85
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DAFTAR TABEL
Halaman 2.1 Persyaratan Agregat Kasar .............................................................................26 2.2 Persyaratan Agregat Halus .............................................................................28 2.3 Persyaratan Aspal Keras ..................................................................................32 4.1 Data Kebutuhan Harian Material Proyek Bulan Juni-Juli 2018...................... 53 4.2 Data Stok Material untuk Proyek Bulan Juni-Juli 2018 ................................. 54 4.3 Jumlah Material AMP yang digunakan .......................................................... 54 4.4 Perhitungan Standar Deviasi Kebutuhan Material Aspal ............................... 59 4.5 Perhitungan Standar Deviasi Kebutuhan Material Abu Batu ......................... 62 4.6 Perhitungan Standar Deviasi Kebutuhan Material Coarse Aggregate ............ 64 4.7 Perhitungan Standar Deviasi Kebutuhan Material Medium Aggregate .......... 66 4.8 Perhitungan Standar Deviasi Kebutuhan Material Pasir ................................. 68 4.9 Rekapitulasi Hasil Perhitungan Safety Stock................................................... 70 4.10 Rekapitulasi Hasil Perhitungan Jumlah Pemesanan Optimum, Reorder Point dan siklus pemesanan ........................................................................... 73
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DAFTAR GAMBAR
Halaman 1.1
Peta Kabupaten Pulang Pisau .........................................................................5
1.2
Lokasi Penelitian ............................................................................................6
1.3
Denah Lokasi Penelitian .................................................................................6
2.1
Bagan Alir Pencampuran Beton Aspal Panas ...............................................8
2.2
Bagian-bagian Instalasi Pencampur Aspal Beton dengan Penakar (Batch Plant) ...........................................................................................................11
2.3
Bin Dingin ...................................................................................................12
2.4
Alat Pengering ............................................................................................13
2.5
Pengumpul Debu ........................................................................................14
2.6
Pengendali Gradasi dan Bin Panas .............................................................15
2.7
Bagian-bagian Instalasi Pencampur Aspal Beton dengan Sistem Menerus (Continouos Plant) ......................................................................................18
3.1
Bagan Alir Penelitian ..................................................................................48
4.1
Bagan HRS-Base Paket Peningkatan Jalan Dadahup - Simpang Alaska dalam Persen .................................................................................................50
4.2
Bagan HRS-Base Paket Peningkatan Jalan dadahup-Simpang Alaska dalam ton ...............................................................................................................50
4.3
Bagan HRS-Base Paket Peningkatan Jalan Kapuas-Palingkau dalam Persen ............................................................................................................51
4.4
Bagan HRS-Base Paket Peningkatan Jalan Kapuas-Palingkau dalam Satuan Ton ...............................................................................................................51
4.5
Bagan HRS-WC Paket Peningkatan Jalan Kapuas-Palingkau dalam Persen ............................................................................................................52
4.6
Bagan HRS-Base Paket Peningkatan Jalan Kapuas-Palingkau dalam Satuan Ton ................................................................................................................52
4.7
Diagram Rencana Pengelolaan Aspal ...........................................................74
4.8
Grafik Hubungan Jumlah Pesanan Optimum(EOQ), ROP dan SS Material Aspal .............................................................................................................74
4.9
Diagram Rencana Pengelolaan Material Abu Batu ......................................75
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4.10 Grafik Grafik Hubungan Jumlah Pesanan Optimum(EOQ), ROP dan SS Material Abu Batu ........................................................................................76 4.11 Diagram Rencana Pengelolaan Material Coarse Aggregate ........................77 4.12 Grafik Hubungan Jumlah Pesanan Optimum(EOQ), ROP dan SS Material Coarse Aggregate .........................................................................................77 4.13 Diagram Rencana Pengelolaan Material Medium Aggregate .......................78 4.14 Grafik Hubungan Jumlah Pesanan Optimum(EOQ), ROP dan SS Material Medium Aggregate........................................................................................79 4.15 Diagram Rencana Pengelolaan Material Pasir .............................................80 4.16 Grafik Hubungan Jumlah Pesanan Optimum(EOQ), ROP dan SS Material Pasir ..............................................................................................................80
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DAFTAR LAMPIRAN
Halaman Peningkatan Jalan Simpang Alaska-Dadahup ........................................................86 Peningkatan Jalan Kapuas-Palingkau ....................................................................92 Proporsi Peningkatan Jalan Kapuas-Palingkau (HRS WC) ...................................95 Proporsi Peningkatan Jalan Kapuas-Palingkau (HRS BASE) ...............................96 Proporsi Peningkatan Jalan Dadahup-Simpang Alaska (HRS BASE) ..................97 Tabel Kapasitas dan Waktu Produksi ....................................................................98 Mencari Nilai Z menggunakan Kurva Distribusi Normal....................................105 Foto Dokumentasi ................................................................................................110
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