Jurnal Sipil Terapan

Penanganan Rembesan dan Perkuatan Tanah Menggunakan Metode Insitu Test (Pressure Meter Test) Studi Kasus : Proyek Bendungan Margatiga

Nora Anggraini, Endro Prasetyo Wahono, Dyah Indriana Kusumastuti — Fri, 19 Jul 2024 00:00:00 +0800

The bearing capacity of the soil is the support of the foundation, where the foundation transmits the loads derived from the weight of the building itself and the loads acting on the building to the surrounding soil. The purpose of this paper is to determine the handling of seepage and soil reinforcement needed in the case study of the Margatiga Dam Project, East Lampung. Based on the results of geological investigations, the Margatiga Dam is composed of a quarter-aged rock layer with a fragment composition of fine sand - gravel, with a soft - hard hardness level and the need for foundation repair. Based on the lithological conditions of the Margatiga Dam Extraction Gate foundation and the Spillway building which are composed of relatively deep and quite porous alluvial sand deposits, this causes the curtain grouting results to be ineffective, therefore it is necessary to change the seepage control design from the Grouting Curtain to the boundary wall. Based on the simulation check in Plaxis Software for Seepage and Excavation Staging, processing was carried out using Secant Pile and Soldier Pile with a depth of 30 meters with a stretch of 140 m and overlapping with Curtain Grouting of Embankment Dam on the left side and 5 m right side. Field PMT results showed that the maximum stress of the rock layer under the spillway foundation was 0.016 MPa and 0.630 MPa.

Identifikasi Kedalaman Muka Air Tanah dan Posisi Akuifer di Kabupaten Tolikara

Frans Polangco Wambena, Alfian Adie Chandra, Dewi Ana Rusim — Tue, 30 Jul 2024 00:00:00 +0800

Groundwater is dynamic and influenced by a number of natural factors. Geology and geomorphology greatly determine the condition of the soil in an area. The geological structure influences the direction of groundwater movement, the type and thickness of the aquifer. The Karubaga District in Tolikara Regency is an area with a morphology of mountains, hills and valleys so it has the potential for rivers and streams that can be used as a source of raw water. Identification of the depth of the groundwater level in the Karubaga District is carried out using tools in the form of the AIDU Golden Rod (AGR), which is a special geophysical study instrument that provides a detailed vertical picture 300 m into the ground surface to read the resistivity values of rocks and aquifers by measuring the natural electric field

Analisa Efektivitas Penggunaan Jembatan Penyeberangan Orang di Depan Mall Kota Jayapura

Penias Lepki, Irja Tobawan Simbiak, Monita Yessy Beatrick — Mon, 05 Aug 2024 00:00:00 +0800

The People Crossing Bridge (JPO) is one of the important infrastructures in the urban transportation system. JPO is designed to facilitate pedestrians to cross the highway safely without being disturbed by vehicle traffic. This infrastructure not only serves to improve safety but also supports mobility efficiency in dense urban areas. On Jalan Dr. Sam Ratulangi, Jayapura City, a pedestrian bridge infrastructure was built, which is located in front of Jayapura Mall, Jayapura City. According to its purpose, the pedestrian bridge was built to reduce the occurrence of traffic accidents in locations with heavy activities, including city centers with shopping that certainly has high mobility. The data collection method in this study uses the survey method. In this study, the researcher conducted a survey of JPO facilities at pedestrian trap sites. This research is the output of the stages that have been carried out by the author. Based on the results of observations that have been carried out on July 8 and 13, 2024, at 07.00 – 17.00 WIP, the results were found that more pedestrians chose to cross using the available JPO with a total of 147 people (65%), compared to 92 people (35%) who did not use the JPO. Meanwhile, using JPO can help and facilitate and shorten the travel time of the crossing, by climbing and descending stairs you can enjoy the atmosphere around. In the condition of the JPO floor, this is due to the presence of mischievous individuals so that public facilities are starting to be unattractive to see. For this reason, public facilities are assets that we need to take care of together so that they are suitable for use. Factors that affect the effectiveness of the JPO located on jl. Dr. Sam Ratulangi in front of the Jayapura City Mall that needs to be concerned is the cleanliness at the location is the top priority.