Awal (iv,v,vi,vii,viii).docx

LEMBAR PENGESAHAN

Yang bertanda tangan di bawah ini, dosen pembimbing PKL, pembimbing PKL, Kepala Program Studi dan Ketua Jurusan Teknik Sipil Politeknik Negeri Medan, menyatakan bahwa Laporan Praktik Kerja Lapangan dari Mahasiswa: Rikki Hermanto siregar

Marudur Sinaga

Nim : 1605022015

Nim : 1605022030

Dengan judul : PRAKTIK KERJA LAPANGAN PADA PEMBANGUNAN MASJID AGUNG MEDAN. TOPIK PKL : METODE PELAKSANAAN PILE CAP, BALOK SLOOF, Dan PLAT LANTAI GEDUNG PARKIR MASJID AGUNG MEDAN Telah selesai diperiksa dan dinilai oleh Dosen Pembimbing dan Pembimbing PKL. Medan ,

Desember 2018

Dosen Pembimbing

Pembimbing PKL

Ir. Syarifuddin H, Drs M.T.

Murdi

NIP : 19601231198903 1252

NRP : 1592063

Ketua Jurusan Teknik Sipil,

Kepala Program Studi,

Ir. Samsudin silaen, M.T.

Drs. H. Syarifuddin, M.T.

NIP :19620204 198903 1 002

NIP : 19581018 1986031 006

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DAFTAR ISI hal

KATA PENGANTAR ..............................................................................................i DAFTAR ISI ............................................................................................................. ii DAFTAR GAMBAR ................................................................................................ iii DAFTAR TABEL .................................................................................................... iv BAB I PENDAHULUAN ......................................................................................... v A. Tinjauan Umum PT Pembangunan (PERSERO) Tbk ..........................1 1. Sejarah Singkat Perusahaan/Tempat Praktik Kerja Lapangan .........1 2. Visi dan Misi PT Pembangunan Perumahan (PERSERO) Tbk .......1 3. Nilai-Nilai Perusahaan (Coorporate Values) ...................................2 4. Data Umum Proyek .......................................................................... 4 5. Lokasi proyek... ................................................................................ 5 6. Struktur organasi.. ............................................................................ 7 B. Tujuan Praktik Kerja Lapangan ............................................................ 8 C. Manfaat Praktik Kerja Lapangan .......................................................... 9 D. Ruang Lingkup ..................................................................................... 10 E. Jadwal Pelaksanaan Praktik Kerja Lapangan ....................................... 10 BAB II PELAKSANAAN PKL ............................................................................... 11 A. PELAKSANAAN PILE CAP ............................................................... 13 1. Pekerjaan persiapan .......................................................................... 13 2. Pemancangan tiang pancang dan bore pile ......................................13 3. Penggalian ....................................................................................... 15 4. Pembobokan tiang pancang dan bore pile. .......................................16 5. Dewatering (pengeringan area pile cap ............................................17 6. Pekerjaan survey ..............................................................................18 7. Pekerjaan bekisting .......................................................................... 20 8. Pabrikasi tulangan ............................................................................ 21 9. Penulangan pile cap.......................................................................... 25 10. Marking letak kolom...................................................................... 27 11. Pengecoran ..................................................................................... 28 a. Uji slump ................................................................................... 29

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b. Penuangan beton menggunakan dump concrete ....................... 30 c. Hasil pengecoran ....................................................................... 31 B. PELAKSANAAN BALOK SLOOF .................................................... 32 1.

Penentuan as balok dan penggalian ............................................... 33

2.

Pabrikasi tulangan balok sloof ....................................................... 34

3.

Pekerjaan bakisting ........................................................................ 35

4.

Pekerjaan penulangan .................................................................... 36 a. Penulangan balok sloof antar kolom dalam satu pile cap ......... 36 b. Penulangan balok sloof antar kolom pada pile cap yang berbeda ...................................................................................... 36

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Pengecoran ..................................................................................... 37 a. Balok sloof sebelum pengecoran .............................................. 37 b. Hasil pengecoran ....................................................................... 38

C. PELAKSANAAN PELAT LANTAI.................................................... 39 1.

Pekerjaan Persiapan ....................................................................... 40

2.

Pembuatan Lantai Kerja ................................................................ 40

3.

Pabrikasi Tulangan ........................................................................ 41

4.

Pekerjaan penulangan .................................................................... 42 a. Penulangan bawah..................................................................... 43 b. Penulangan cakar ayam ............................................................. 43 c. Penulangan atas ......................................................................... 44

5.

Pekerjaan pengecoran .................................................................... 45 a. Pengecoran dengan dump concrete ........................................... 45 b. Finishing dan pemeliharaan ...................................................... 45

BAB III PENUTUP ................................................................................................ 47 A. Simpulan ............................................................................................... 47 B. Saran ..................................................................................................... 47 C. Kesesuaian dan ketidaksesuaian dengan teori dikampus ...................... 48 1.

Kesesuaian dengan toeri kampus ................................................... 48

2.

Ketidaksesuaian dengan teori kampus ........................................... 48

D. Kelemahan yang ditemui ...................................................................... 49 E. Kelebihan yang ditemui ........................................................................ 49

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DAFTAR GAMBAR Gambar II.1 Penggalian pile cap P16 ......................................................................15 Gambar II.2 Pembobokan pile cap P16 ....................................................................16 Gambar II.3 Dewatering pile cap P16 .....................................................................17 Gambar II.4 Pompa submersible 3 Inchi..................................................................18 Gambar II.5 pengukuran kedalaman galian pile cap P20-P24.................................19 Gambar II.6 Marking batas pile cap P20-P24 ..........................................................20 Gambar II.7 Pekerjaan bekisting pile cap P16 ..........................................................21 Gambar II.8 Tulangan utuh .......................................................................................22 Gambar II.9 Pabrikasi tulangan pile cap ...................................................................24 Gambar II.10 Hasil pabrikasi tulangan ......................................................................25 Gambar II.11 Penulangan bawah pile cap P16 .........................................................26 Gambar II.12 penulangan atas pile cap P16..............................................................26 Gambar II.13 Marking kolom pile cap P16 ...............................................................27 Gambar II.14 Penulangan stek kolom .......................................................................28 Gambar II.15 sketsa tinggi slump .............................................................................29 Gambar II.16 uji slump beton readymix ..................................................................30 Gambar II.17 proses pengecoran pile cap P16..........................................................30 Gambar II.18 hasil pengecoran pile cap P16 ............................................................31 Gambar II.19 penggalian dan penentuan As balok ...................................................33 Gambar II.20 pabrikasi tulangan balok sloof ............................................................34 Gambar II.21 pemasangan bekisting balok sloof ......................................................35 Gambar II.22 tulangan balok sloof dalam satu pile cap...........................................36

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Gambar II.23 penulangan balok sloof antar pile cap .................................................37 Gambar II.24 balok sloof sebelum pengecoran..........................................................37 Gambar II.25 hasil pengecoran balok sloof dan pelat lantai .....................................38 Gambar II.26 perataan dan pemdatran pada daerah pelat lantai ................................40 Gambar II.27 pembuatan lantai kerja ........................................................................41 Gambar II.28 pabrikasi tulangaan plat lantai ............................................................41 Gambar II.29 susunan tulangan bagian bawah pelat .................................................43 Gambar II.30 pemasangan tulangan cakar ayam .......................................................44 Gambar II.31 tulangan bagian atas pelat ...................................................................44 Gambar II.32 pengecoran pelat lantai dengan dump concrete ...................................45 Gambar II.33 hasil penngecoran pelat lantai..............................................................6

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DAFTAR TABEL

Tabel I.1 Tabel Jadwal Kegiatan Praktik Kerja Lapangan .......................................10 Tabel II.1 kebutuhan tulangan pile cap ......................................................................23 Tabel II.2 spesifikasi berat tulangan ulir ...................................................................24

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DAFTAR GAMBAR

Gambar 1.1 Struktur Organisasi Proyek.................................................................6 Gambar 1.2 Peta Lokasi Proyek...............................................................................7 Gambar 2.1 Air........................................................................................................9 Gambar 2.2 Semen.................................................................................................10 Gambar 2.3 Pasir....................................................................................................11 Gambar 2.4 Batu Split...........................................................................................11 Gambar 2.5 Plastik Geomembran..........................................................................12 Gambar 2.6 Tulangan Wiremesh M8 Ulir............................................................13 Gambar 2.7 Truk molen........................................................................................17 Gambar 2.8 Alat Sipat Datar................................................................................14 Gambar 2.9 Alat Vibrator.....................................................................................15 Gambar 2.10 Alat Wastewater...............................................................................15 Gambar 2.11 Concrete Bucket..............................................................................16 Gambar 2.12 Sipatan............................................................................................16 Gambar 2.13 Molen ............................................................................................17 Gambar 2.14 Dumptruck pasir..............................................................................17 Gambar 2.15 Kompressor ...................................................................................18 Gambar 2.16 Keadaan Jalan Yang Belum Di Perbaiki.........................................19

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Gambar 2.17 pengukuran beda tinggi....................................................................20 Gambar 2.18 Penyedotan air.................................................................................21 Gambar 2.19 Pekerjaan timbunan.........................................................................21 Gambar 2.20 Pekerjaan galian..............................................................................22 Gambar 2.21 Pemasangan mal bekisting...............................................................23 Gambar 2.22 Pemasangan geotextil membran dan tulangan................................23 Gambar 2.23 Pengikatan tulangan dengan kawat.................................................24 Gambar 2.24 Pengecoran tahap 1.........................................................................24 Gambar 2.25 Pengecoran tahap 2.........................................................................25 Gambar 2.26 Pemadatan dengan alat vibrator......................................................25 Gambar 2.27 Perataan dengan roskam besar.........................................................26 Gambar 2.28 Perataan dengan roskam kecil.........................................................26 Gambar 2.29 Perm.jalan yang disirami air...........................................................27 Gambar 2.30 Sketsa marka saluran.......................................................................28 Gambar 2.31 Pekerjaan galian saluran..................................................................29 Gambar 2.32 Pemasangan bekisting dan tulangan................................................30 Gambar 2.33 Pengecoran dengan alat concrete bucket ........................................31 Gambar 2.34 Pemadatan dan perataan.................................................................31 Gambar 2.35 Pengecoran atas saluran.................................................................32 Gambar 2.36 Tutupan saluran.............................................................................32 Gambar 2.37 Plat beton atas saluran ...................................................................33 Gambar 2.38 Kanstin.............................................................................................34

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DAFTAR TABEL

Tabel 1.1 Jadwal Kegiatan PKL..............................................................................4 Tabel 2.1 jenis-jenis portland cement dan penggunaannya.....................................9

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DAFTAR LAMPIRAN

Lampiran 1 bukti tanda mahasiswa PKL Lampiran 2 formulir asistensi bimbingan PKL Lampiran 3 shop drawing siteplan (batas perbaikan jalan rigid) Lampiran 4 shop drawing layout perbaikan jalan Lampiran 4 shop drawing saluran Lampiran 4 shop drawing elevasi saluran Lampiran 4 shop drawing detail kanstin Lampiran 4 shop drawing bekisting saluran

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