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Published by Institut Teknologi Perusahaan Listrik Negara

ISSN : 23561491 EISSN : - DOI : -

Civil Engineering, Building, Construction & Architecture Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

FORUM MEKANIKA Journal, especially for Civil Engineering Lecturers and generally for all Practitioners to be able to contribute in the form of scientific writing that will be useful for the application of science and technology, especially in the field of Civil Engineering.

Arjuna Subject : -

Articles 85 Documents

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TINJAUAN KEKUATAN RANTING BAMBU ORI SEBAGAI KONEKTOR PADA SAMBUNGAN STRUKTUR KUDA-KUDA BAMBU Desi Putri; Astuti Masdar
FORUM MEKANIKA Vol 5 No 2 (2016): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Bamboo as construction materials can be used in house building, including columns, beams, partitions, horses, bridges as well as a buffer. The strength of a bamboo construction is influenced by the strength of the connections. At the assembly the construction of bamboo as construction of the horses, the connection with the bolt connector and plate make the horses construction of bamboo less economical because the cost of a bamboo construction will be expensive on the connection.The research is conducted experimentally in two phases of testing. In the early phase of research it is conducted preliminary testing which includes physical and mechanical properties testing of bamboo. The second phase at connection do testing compressive strength with a variety of angles namely 00, 450, and 900. The test results show the value of bamboo moisture content and density of each amount of 12.90% and 0.58 g/cm3. The Connection strength of obtained values theoretically are the lowest strength at 900 angle direction of the strength of 769 kg and the highest on the strength direction with angle of 00 amounting to 1732 kg while the value of the connection strength on the direction angle of 450 amounted to 889 kg. The greater the angle of direction of the force then minimize the connection strength.

PERBAIKAN TANAH PADA TANAH GRANULAR DENGAN VIBROCOMPACTION Dyah Pratiwi Kusumastuti
FORUM MEKANIKA Vol 5 No 2 (2016): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Land requirements in big cities like Jakarta continues to increase with the growth in infrastructure development. Often the development and utilization of such land should be carried out on land that does not in accordance with the requirements. For example construction on the ground that is less stable during vibration or earthquake as granular soils. Compaction method is generally preferred in granular soil improvement because the method is suitable for use in soil layers not berkohesi that is not solid enough. Land improvements made to the land that has a fairly low technical characteristics become viable material used as a construction material. Benefits of using the technique of vibro compaction, among other things increase the weight of the volume of soil, reducing the decline foundation and reduce the impact of liquefaction.

PERENCANAAN PENGELOLAAN DAS TERPADU DALAM MENGATASI KETIDAKSEIMBANGAN KEBUTUHAN AIR BERSIH DAN PERMASALAHAN BANJIR (KAJIAN DAERAH ALIRAN SUNGAI CISADANE) Endah Lestari; Ranti Hidayawanti
FORUM MEKANIKA Vol 5 No 2 (2016): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

The imbalance between supply and demand of water needed to do assessment of water availability and needs good water for balance. Development of the region in certain areas led to increased water demand due to population growth. Watershed Development seeks to manage the relationship hydrology to optimize use of natural resources for conservation, productivity, and poverty reduction. To achieve this requires a coordinated management of the various resources in the watershed, including forests, farms, agricultural land, surface and underground water through the hydrologic processes (Kerr, 2007). Cisadane River is the largest contributor to the water source for the residents of Tangerang City and surrounding areas. With the increasing development of all aspects of life, as the impact of population growth and development in an area, it also increases the needs and demands of water services that require water allocation management. Planning for Watershed Management Cisadane divided into three parts, the first watershed upstream side based on the functions of conservation managed to maintain the environmental conditions of the watershed that is not degraded, which among other things can be indicated on the condition of vegetation cover land watersheds, water quality, the ability to store water (discharge), and rainfall. Both DAS middle part is based on the function of the utilization of river water that managed to provide benefits to the social and economic interests, which among other things can be indicated from water quantity, water quality, the ability to deliver water, and the height of the ground water level, as well as related to the maintenance of water infrastructure such as management of rivers, reservoirs and lakes. The third watershed downstream part is based on the function of the utilization of river water that managed to provide benefits to the social and economic interests, as indicated by the quantity and quality of water, the ability to deliver water, height of rainfall, and related to the needs of agriculture, clean water, and water management wast

PENGGUNAAN LIMBAH KERAMIK DAN SERBUK KACA SEBAGAI BAHAN STABILISASI TANAH RAWA Irma Sepriyanna; Fitri Khairani
FORUM MEKANIKA Vol 5 No 2 (2016): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Marshland is soft soils containing clay, silt and peat. Clay / silt are cohesive plastic which has the properties coherency between the grains and capable of continuously formed permanently with a relatively moderate pressure without rupturing. However, clay or silt becomes inconsistent / unstable to loading, resulting in a high settlement when loaded (instability). Marshland has unstable behavior which is necessary to improve. One of chemically improvement can be done by recovering waste glass bottles and ceramic shards waste as a stabilizing agent. Waste glass bottles and ceramic shards of waste recycled in a crushed glass powder and ceramic powder which serves as a filler and a binder. Based on test results obtained optimum value percentage value addition of powdered glass and ceramic powder is on the ground with a mixture of 10% and 10% glass powder with a ceramic powder curing 7 days . The soil with a mixture of 10% and 10% glass powder with a ceramic powder curing 7 days has a value of water content of 44.81%, 1.40 specific gravity, liquid limit of 56.92%, 30.36% plastic limit, shrinkage limit 26 , 49%, 26.56% plasticity index, CBR 36.33%. This shows that the soil with the CBR value (CBR 3% - 7%) can be used as a subgrade layer for local residential streets or roads with low traffic

STABILISASI TANAH MENGGUNAKAN KAOLIN DAN KAPUR (STUDI KASUS TANAH RESIDUAL DI AREA STT-PLN DURI KOSAMBI JAKARTA BARAT) Indah Handayasari
FORUM MEKANIKA Vol 5 No 2 (2016): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

The topography of West Jakarta area categorized as flat and sloping areas with characteristics of the soil and rock is generally a silty sand, sandy loam, silt loam and sandy silt. Soil conditions in this category have a relatively low carrying capacity and the potential development of a large shrinkage. Carrying capacity of the land itself is one of the parameters on both the construction work under the structure and the upper structure. If the soil does not have a good carrying capacity it will be very dangerous constructions built upon. One improvement to get the soil bearing capacity to be expected that the chemical soil stabilization methods. One chemical soil remediation efforts can be done by adding a siliceous material such as kaolin and limestone soil residual material in West Jakarta area. The research sample was made with kaolin and limestone composition ratio of the residual soil with a treatment that is 0%, 5%, 10%, and 15% of the dry weight of residual soil. Ripening soil mix made for 1 day, 7 days and 14 days. From the test results obtained optimum value on the ground with a mixture of 10% lime and 10% kaolin with a long ripening 14 days. Where the soil with a mixture of 10% lime and 10% kaolin with a long ripening 14 days had a specific gravity is 1.8944, 53.7865% liquid limit, plastic limit 0.4856% 23.3009% plasticity index, shrinkage limit 38.92321% , CBR value of 195.6898%, the cohesion of 0,6767 kg/cm2, and the value of the friction angle of 39°52'44''.

ANALISA PENGARUH LAMPU JALAN TERHADAP INDEKS TINGKAT PELAYANAN JALAN DENGAN PERBANDINGAN METODE GREENSHIELD DAN METODE GREENBERG Muklis Muklis; Revianty Nurmeyliandari
FORUM MEKANIKA Vol 5 No 2 (2016): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

This study aims to analyze the index level of service during the day and evening using street lights. Index level of service is analized with Greenshield method and Greenberg method, implemented in good condition or smooth road pavement, freeway, a few turn, and has a street light which function optimally. Thus do the analysis of vehicle speed in the afternoon and evening, and by using both methods can be analyzed index level of service

PEMANFAATAN SUMBER DAYA ALAM DENGAN MENGGUNAKAN BATANG ROTAN SEBAGAI PENGGANTI TULANGAN BETON Irma Wirantina Kustantrika
FORUM MEKANIKA Vol 5 No 2 (2016): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Iron ore as a raw material of steel reinforcement in concrete can not endeavor to increase production because it is a natural resource that is not renewable. To overcome dependence consumption of reinforcing steel in the concrete is then used altrenatif other material as the reinforcing steel that is easy, inexpensive to obtain and resistant to corrosion, namely in the form of reinforcement of rattan sticks. It is intended that the natural resources we have can be reused to the maximum. This study uses a cane kind seel as reinforcement concrete beams. Tests conducted by the method of loading one point, cracks are expected in this test is failed bending. Reinforcement made from 1 piece of iron reinforcement and 2 rattan wrapped reinforcement wire reinforcement bendrat round face, it is expected that the adhesion reinforcement with concrete stronger. Testing was done by testing reinforced concrete beam flexural capacity using a type of reinforcement rattan cane plain size OD OD 20 mm and 30 mm. With the quality of the concrete used for fc '= 18.675 MPa. The test specimen concrete beam flexural capacity was only 28 days with the test method fourth point loading system.

ANALISIS FAKTOR PENYEBAB KECELAKAAN LALULINTAS SEBAGAI ACUAN PERENCANAAN JALAN UNTUK MENINGKATKAN KESELAMATAN Gita Puspa Artiani
FORUM MEKANIKA Vol 5 No 2 (2016): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

The highway where the planning and manufacturing, to provide safety, comfort, safety and efficiency, but there's also the incidence of traffic accidents on the highway. By looking at the large number of accidents in Indonesia's road safety must be viewed comprehensively on all aspects of planning, the work of making a road which is the design direction and visualization of trace roads for the road meet the requirements of safe, secure, comfortable, efficient. The purpose of this study was to determine the factors that cause potential traffic accidents linked to road planning so as to provide proposals and suggestions relating to the improvement of traffic safety in order to reduce the accident rate in terms of planning the road. This study begins with identifying the causes of traffic accidents with survey method / descriptive. Were analyzed with SPSS version 21 to find a relationship between a number of variables of the potential causes of traffic accidents were originally mutually independent of each other, namely human variables (the driver), vehicle, road and environment, so that it can be made one or more sets of variables are dominant of the number of initial variables. As a case study, a study conducted diruas road Ciasem - Pamanukan Subang Regency, West Java. Results of the study are three major types of cross-sectional ranking of frequent road accidents by type of vehicle and the factors that cause accidents often occur, as follows: 1) .Types sectional intersection cornering, 2) .Types cross section of straight road intersection and 3 ) .Jalan straight amid residential or public facilities.

STUDI PENGGUNAAN LIMBAH SERBUK KACA SEBAGAI BAHAN SUBSTITUSI SEMEN PADA PEMBUATAN BATA BETON PEJAL Indah Handayasari; Gita Puspa Artiani; Desi Putri
FORUM MEKANIKA Vol 5 No 1 (2016): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Waste glass is often the trash unused and potentially damaging to the environment because it is difficultto decompose. Though glass waste has the potential to be used, one of them as a substitute for cement inconcrete solid brick. The purpose of this study was to determine how much influence the addition of glasspowder waste of compressive strength of concrete solid brick. Manufacture of solid concrete brick made fromwaste fine aggregate, cement PC type I, and glass powder from waste glass bottles. Test object of research ismade with a composition ratio of cement, fine aggregate and water with glass powder 4 substitution treatmentwere 0%, 10%, 20%, and 30% by weight of cement. Compressive strength testing is done on day 7,14, 21 and28. From the test results obtained optimum compressive strength value contained in glass powder ratiovariation of 10% of the cement with the compressive strength obtained at 73.33 Kg / cm2 and included intothe Tertiary quality II. This shows the glass powder can be used as an additive in the manufacture of solidconcrete brick so that it can be used as an alternative to environmentally friendly construction materials.

TINJAUAN KUAT TEKAN BETON MUTU TINGGI DENGAN PENAMBAHAN TALI TAMBANG PLASTIK Abdul Rokhman; Dyah Pratiwi Kusumastuti
FORUM MEKANIKA Vol 5 No 1 (2016): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

High quality concrete as a construction material more widely used, but the higher of the concrete qualitywill cause ductility properties of concrete decreases. One way to decimate the mechanical properties of highstrength concrete is to provide additional materials in the concrete mix. This study aimed to determine theeffect of plastic rope in the concrete mixture. Technical properties of concrete under review due to theaddition of plastic rope to concrete is compressive strength. The method used in this research is to make a testpiece for later testing compressive strength. The test object is created by the addition of plastic rope along the5 cm, 7 cm and 10 cm as much as 0.5% by weight of coarse aggregate. Specimens were made for eachvariation is 3 pieces and will be tested on the concrete age 7 and 28 days. The planned results in this study isthe high quality concrete compressive strength of 55 MPa at the age of concrete 28 days. From the researchthat at the age of concrete 28 days minimum compressive strength of concrete specimen contained in theconcrete with the addition of 5 cm plastic ropes of 11.75 MPa or 21.36% of the compressive strength ofconcrete plans. The maximum concrete compressive strength at 28 days there on the concrete specimen withthe addition of plastic rope 7 and 10 cm at 12.14 MPa or 22.07% of the compressive strength of concreteplans.

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Riki Ruli A. Siregar

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riki.ruli@sttpln.ac.id

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riki.ruli@sttpln.ac.id

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Kota adm. jakarta barat,

Dki jakarta

INDONESIA