Article Per Year (5 Year)
p-Index From 2021 - 2026
0.61
P-Index
This Author published in this journals
All Journal JST ( Jurnal Sains Terapan ) JTT (Jurnal Teknologi Terpadu)
Achmad, S.T., M.T, Karmila
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Analisa Kekuatan Profil Hexagonal Castellated dengan Variasi Sudut Bukaan Achmad, S.T., M.T, Karmila; Anggraini, Elok Delima; Wijadmoko, Wijadmoko; Huda, Masrul
Jurnal Teknologi Terpadu Vol 12, No 2 (2024): JTT (Jurnal Teknologi Terpadu)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jtt.v12i2.2213

Abstract

Profil Hexagonal Castellated adalah struktur dengan elemen berbentuk hexagonal yang saling terhubung untuk membentuk rangkaian yang optimal dan tepat. Dalam penelitian ini dilakukan analisa kekuatan pada profil WF yang dimodifikasi menjadi profil Hexagonal Castellated dengan variasi sudut bukaan yaitu 30°,45° dan 60°. Analisa dilakukan dengan metode LRFD dengan menggabungkan faktor beban dan faktor ketahanan untuk menentukan kekuatan struktur dengan lebih akurat. Faktor beban mencakup beban mati,beban hidup dan beban angina, sedangkan faktor ketahanan mencakup faktor keamanan terhadap kegagalan profil dan material. Kekuatan profil hexagonal castellated ditinjau dari kekuatan geser dan kekuatan lenturnya.Hasil dari analisa variasi sudut bukaan 30°,45° dan 60° didapatkan nilai teganagan geser terbesar pada sudut bukaan 30° yaitu 156,81 MPa  dan nilai tegangan lentur terbesar pada sudut bukaan 45° yaitu 102,21 MPa
Pemanfaatan Pasir Lokal Kecamatan Palaran Kota Samarinda Kalimantan Timur sebagai Material Pembuatan Beton Normal Achmad, S.T., M.T, Karmila
Jurnal Teknologi Terpadu Vol 13, No 2 (2025): JTT (Jurnal Terpadu Terpadu)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jtt.v13i2.2471

Abstract

The local sand utilization is expected as an alternative to achieve more efficient construction cost. The availability of adequate local sand in Samarinda is located in Palaran sub-district. Palaran sub-district is the third largest sub-district of 10 sub-districts in Samarinda. Geographically, the sub-district has 5 villages with a land area of 156.29 km2. Besides Palu sand, the local community generally uses two local sand types for construction, mountain sand in Bantuas village and river sand in Handil Bakti village. This study aims to obtain an alternative local sand material for forming concrete having good concrete compressive strength. For this reason, some sand material tests will be carried out: gradation tests, specific gravity and absorption, water content, mud content and unit weight. For the gravel test, the sand test is added with an abrasion test. The concrete compressive strength test result showed local sand from the mountain sand of Bantuas village has a higher compressive strength compared to other variations, concrete using Palu sand and concrete using Handil Bakti Village River sand. The results of the 14-day compression test obtained the concrete strength using mountain sand from Bantuas Village of K-304.60, river sand from Handil Bakti Village of K-240.27, and Palu sand of K-248.27. While,the 28-day compression test result obtained the concrete strength using mountain sand from Bantuas Village of K-337.68, river sand from Handil Bakti Village of K-247.06, and Palu sand of K-274.40.
Evaluasi Kekuatan Daya Dukung Pondasi Bored Pile Dengan Struktur Slab On Pile (Studi Kasus Pada Slab On Pile Sta 14+045 Jalan Tol IKN Paket 3a KKT Kariangau-Karang Joang) Achmad, S.T., M.T, Karmila; Cholick, Baby Febriyana
JST (Jurnal Sains Terapan) Vol 11, No 2 (2025)
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat, Politeknik Negeri Balikpapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jst.v11i2.2526

Abstract

This study aims to evaluate the load-bearing capacity and strength of the bored piles based on their dimensions and soil testing parameters. SOP 1 STA 14+065 is part of the IKN Toll Road Package 3A KKT Kariangau-Karangjoang, which uses pile slabs due to the soft soil conditions along the road's alignment. A PDA test was conducted to assess the load-bearing capacity of bored pile foundations with an 800 mm diameter with varying depths. Samples from Pile Points P4 B 131 and P4 B 152 were selected because they did not meet the minimum PDA target of 419.6 tons, raising concerns about potential settlement or even structural failure.The load analysis and calculations on the slab-on-pile structure were performed manually based on SNI 1725:2016 "Loading for Bridges" and SNI 2833:2016 "Bridge Design for Earthquake Loads". The slab-on-pile dimension analysis was assisted by the SAP2000 V.14.2.2 software.The study's results show that the static load-bearing capacity at Point P4 B 131 is 12.87% (36.085 tons) lower than the PDA test result. At Point P4 B 152, the static load-bearing capacity is 39.85% (108.67 tons) higher than the PDA test result. The analysis of the SOP 1 Segment 6 model using SAP2000 V.14.2.2 found that the vertical strength required for Piles P4 B 131 and P4 B 152 is 645.25 kN (65.8 tons) and 435.36 kN (44.4 tons), respectively. The allowable load-bearing capacity available in Piles P4 B 131 and P4 B 152 is 118 tons and 65 tons based on the PDA test, and 103.166 tons and 109.068 tons from static load calculation methods. Keywords : Slab on pile, PDA Test, Bearing capacity, Bored pile, SAP2000
Co-Authors Anggraini, Elok Delima Cholick, Baby Febriyana Huda, Masrul Wijadmoko, Wijadmoko