265176810-perhitungan-Pondasi-Tiang-Pancang.pdf

PERENCANAAN PONDASI TIANG PANCANG PERHITUNGAN DAYA DUKUNG TIANG PANCANG Kedalaman tanah keras

= .............. m

Sketsa rencana pile cap

Data perencanaan: Lebar pile cap (B)

= .............. m

Panjang pile cap (L)

= .............. m

Tebal pile cap (h)

= .............. m

Mutu beton (fc’)

= .............. Mpa

Mutu baja tulangan (fy)

= .............. Mpa

A. Berdasarkan Mutu Bahan Tiang

Direncanakan menggunakan ................................................................. dengan spesifikasi bahan tiang sebagai berikut: Mutu beton (fc’)

= .............. Mpa

Berat tiang

= .............. Kg/ m

Luas penampang tiang

= .............. cm2

Daya dukung tiang tunggal  ton/ tiang ............................................................................................................................................... ...............................................................................................................................................

B. Berdasarkan Data Tanah (Hasil Uji Laboratorium) Berat volume tanah

= .............. ton/m3

Cohesi (c)

= .............. ton/m2

Sudut geser tanah (Ø)

= ..............

B.1. Daya dukung ujung tiang (Terzaghi Formula)

Dimana:

Dari Tabel Terzaghi untuk nilai sudut geser = .............. didapatkan nilai sebagai berikut: Nc

= ..............

Nq

= ..............

Nγ

= ..............

Daya dukung ujung tiang  ton ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ B.2. Daya dukung friksi tiang (Tomlinson Formula)

Dimana: As

= Luas selimut tiang pancang yang menerima geser

α

= Faktor adhesi  0,35 s/d 1,50

K

= Koefisien tekanan lateral, nilainya antara Ko s/d 1,75

............................................................................................................................................ δ

= Sudut geser efektif antara tanah dan material tiang

............................................................................................................................................

Daya dukung friksi tiang  ton ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ B.3. Daya dukung tiang tunggal

............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................

C. Berdasarkan Data Tanah (Hasil Uji Sondir)

Nilai conus rata-rata di ambil untuk kedalaman 4D ke atas s.d 8D ke bawah Nilai 8D ke atas

= ........................................................................

Nilai 4D ke bawah

= ........................................................................

Nilai conus rata-rata untuk 4D ke atas s.d 8D ke bawah ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ Daya dukung tiang  ton ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................

D. Resume Perhitungan Daya Dukung Tiang Tunggal 1.

Berdasarkan Mutu Bahan

= ........................ ton/ tiang

2.

Berdasarkan Hasil Uji Tanah di Laboratorium

= ........................ ton/ tiang

3.

Berdasarkan Hasil Uji Sondir

= ........................ ton/ tiang

4.

Diambil nilai yang terkecil sebagai daya dukung

= ........................ ton/ tiang

E. Beban Maximum Yang Diterima Tiang

Data Perhitungan: Mu SAP2000

=

= ........................ Kg-m

Pu SAP2000

=

= ........................ Kg

W pedestal

= ......................................... = ........................ Kg

W pile cap

= ......................................... = ........................ Kg + Pu (total)

= ........................ Kg

Beban maximum yang diterima tiang  ton ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ...............................................................................................................................................

PERHITUNGAN PENULANGAN PILE CAP

...................................................................................................................................................... ......................................................................................................................................................

...................................................................................................................................................... ...................................................................................................................................................... Asumsi tulangan pile cap:  Tulangan utama diameter

= ................... mm

 Selimut beton

= ................... mm

 Tinggi efektif (d)

= ................... mm

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...................................................................................................................................................... ......................................................................................................................................................

...................................................................................................................................................... ...................................................................................................................................................... ...................................................................................................................................................... ...................................................................................................................................................... Kontrol Rasio Penulangan dan rho pakai ...................................................................................................................................................... ...................................................................................................................................................... Luas Penampang Tulangan (As)

......................................................................................................................................................

Jumlah tulangan

...................................................................................................................................................... ...................................................................................................................................................... Spasi antar tulangan

...................................................................................................................................................... ...................................................................................................................................................... ...................................................................................................................................................... ......................................................................................................................................................

Dipasang tulangan utama ......................................... pada arah x maupun arah y