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All Journal NEUTRON : Research from all areas of the Civil Engineering Narotama Jurnal Teknik Sipil
Diah Ayu Restuti Wulandari
Universitas Narotama
Civil Engineering, Building, Construction & Architecture Engineering Materials Science & Nanotechnology Transportation

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OPTIMIZATION OF PROJECT DURATION USING CPM METHOD AND MONTE CARLO CRYSTAL BALL SIMULATION Muhammad Chilmi; Diah Ayu Restuti Wulandari
Neutron Vol 19 No 2 (2020): JANUARI 2020
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

There are many aspects of uncertainty on the project that affect accuracy in the process of the making project schedule, so it needs analysis of the probability of the scheduling and sensitivity of work that affects to completion total duration of the project. The existing schedule of the project Laves Mall proved was late because ignored the uncertainty aspects, by using monte Carlo crystal ball simulation will help to find completion duration of the project with the most efficiency duration, Existing completion duration project is 500 days started on 6 July 2018 to 1 December 2019, after simulation change into 604 days and the project started same as existing duration which is on 6 July 2018 to 15 March 2020 by the deviation of the duration is 104 days or about 3 months. And the highest sensitivity work activity that affects the entire duration completion of projects is cutting off of head pile cap work with sensitivity percentage is 18,8%.
THE EFFECT OF ADDITIVE WITH FOAM AGENT AND COCONUT SHELL ON LIGHTWEIGHT CONCRETE Fikki Efendi; Fredy Kurniawan; Diah Ayu Restuti Wulandari
Neutron Vol 19 No 1 (2019): JULY 2019
Publisher : NAROTAMA UNIVERSITY, Indonesia

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Abstract

Concrete houses have a higher social and economic status. This study provides another consideration for the selection of building materials (Wonorahardjo, 2008). There are several ways that can be used to make concrete lighter, including using lightweight aggregates, substituting coarse aggregates with foam agents, adding coconut shells and additives where coconut shell waste has not been used optimally. In this research, a lightweight concrete mixture made from additives 5M additive, foam agent and coconut shell using 3 kg cement composition. While the 5M additives variation of 3%, 5%, 10%, 15% of cement, 15 milliliters of foam agent and coconut shell of 1%, with consideration of the specimens for 28 days not soaked non-curing. The test specimen is made with a size of 15x30 cm. This study is to determine the weight, compressive strength of the lightweight concrete produced. The results of research on the use of additional 5M additives, foam agents and coconut shells cause concrete to be lighter and compressive strength decreases. The weight of light concrete at 28 days not soaked is 775 kg / cm3, while the quality of concrete is 22 kg / cm2.
TINGKAT PEMAHAMAN PELAKSANAAN PEKERJAAN KONTRUKSI PRESERVASI JALAN BERBASIS KONTRAK LONG SEGMENT PADA BALAI BESAR PELAKSANAAN JALAN NASIONAL VIII SURABAYA MOCHAMMAD FAISOL AKBAR KHAQIQI; Diah Ayu Restuti Wulandari
NAROTAMA JURNAL TEKNIK SIPIL Vol 3 No 2 (2019): Narotama Jurnal Teknik Sipil (NOPEMBER, 2019)
Publisher : Program Studi Teknik Sipil Universitas Narotama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31090/njts.v3i2.927

Abstract

Penerapan kontrak berbasis long segment yang dinilai baru untuk penguna jasa dan kontraktor di Balai Besar Pelaksanaan Jalan Nasional VIII. Sehingga di butuhkan pemahaman mengenai sistem tersebut. Para pihak mengalami kesulitan untuk menerapkan standar – standar yang sudah di tentukan serta pemahaman lingkup pekerjaan yang dilaksanakan, sehingga menyebabkan pelaksanaan pekerjaan berbasis long segment tidak efektif terlaksana dengan baik hingga saat ini. Melihat permasalahan di atas maka, Penelitian ini dilakukan untuk mengidentifikasi faktor – faktor pemahaman dari pihak – pihak penguna jasa dan kontraktor dalam pelaksanaan preservasi jalan berbasis kontrak Long Segment pada Balai Besar Pelaksanaan Jalan Nasional VIII Surabaya, sehingga dapat diketahui faktor – faktor pemahaman penguna jasa dan kontraktor. Diharapakan penelitian ini berguna untuk menunjang pelaksanaan pekerjaan Long Segment kedepan bisa lebih efektif dalam pelaksanaanya. Metode yang digunakan dalam penelitian ini menggunakan Analytical Hirarchy Process (AHP).Sesuai dengan batasan penelitian ini, jumlah responden yang di gunakan yaitu 15 penguna jasa dan 15 penyedia jasa pada Balai Besar Pelaksanaan Jalan Nasional VIII Surabaya. Faktor – faktor pemahaman dari Pejabat Pembuat Komitmen (PPK) sebagai pengguna jasa menempatkan pemahaman dalam hukum kontrak sebagi faktor yang dominan dengan bobot (0.195), sedangkan penyedia jasa/ kontraktor menempatkan kemampuan dalam memahami hukum kontrak sebagi faktor yang dominan dengan bobot (0.206).
Co-Authors Fikki Efendi Fredy Kurniawan Mochammad Faisol Akbar Khaqiqi Muhammad Chilmi