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ANALISA KINERJA PERSIMPANGAN BERSINYAL PADA PERSIMPANGAN ANGKATAN 66 DAN RUAS JALAN R. SOEKAMTO KOTA PALEMBANG Redaksi Tim Jurnal
FORUM MEKANIKA Vol 6 No 2 (2017): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1464.458 KB) | DOI: 10.33322/forummekanika.v6i2.116

Abstract

Transportation is a very important and strategic means to facilitate the movement in an effort to meet the needs of the community. Planning and construction of transportation facilities and infrastructure, greatly influence in determining the increase of economic growth in supporting the achievement of development targets. The real impact that occurs as a result of rapid economic growth, population growth, and changes in land use affects the performance of intersections and roads, especially the problem of congestion, delays, queues opportunities and other issues. Based on the result of calculation analysis which have been done by using Indonesian Highway Capacity Manual method (IHCM), capacity of intersection of Angkatan 66 Palembang on the condition of the morning peak was 3007 smp / hour at peak lunch was 2875 smp / hour and the afternoon peak is 2997 smp / hour. The high movement of vehicular traffic flow at the intersection of Angkatan 66 and the road R. Soekamto indicates that the level of service is not sufficient to meet traffic needs, this can be seen from the Lower level of service or performance (Level of Service / LOS) at the intersection Angkatan 66 and the road R. Soekamto C (0,7908) and D (0,889) are at the level where the current begins unstable operation speed relatively quick decline due to the obstacles that arise. So to overcome the problem of alternative road widening or construction of fly over (fly over) and traffic management in the form of traffic engineering management has to be implemented.
ANALISA PENGARUH ADMIXTURE TERHADAP ABU TERBANG (FLY ASH) DAN BOTTOM ASH Redaksi Tim Jurnal
FORUM MEKANIKA Vol 6 No 2 (2017): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1412.088 KB) | DOI: 10.33322/forummekanika.v6i2.117

Abstract

With improve the quality of concrete is by using the addition of admixture. By adding admixture Silica fume and superplasticizer is expected to improve concrete quality in concrete using fly ash and bottom ash. The main objective of this research is to know the value of concrete compressive strength, slump test value, fresh concrete temperature and setting time in concrete using fly ash and bottom ash by 0%, 5%, 10%, 15%, 20% and 25% by weight of cement, with variations of silica fume 0%, 2%, 4%, 6 %, 8%, 10% of the weight of cement that has been reduced by the weight of fly ash and bottom ash and added with superplasticizer of 2% of the water requirement. The planned concrete quality was 41.7 MPa at 28 days, with the sample tested at age 7, 14, 28 days. Based on the results of the highest concrete compressive strength test for fly ash concrete (fly ash) is found in FA mixture variation 10%, SP 4%, SF 2% that is equal to 56,16 MPa. And for mixed bottom ash the highest compressive strength on mixed variation of BA 5%, SF 2%, SP 2% is equal to 49,82 MPa. Fresh concrete temperature variation of FA mixture 5%, SF 2%, SP 2% and BA 5%, SF 2%, SP 2% rose one degree from normal concrete temperature. Setting time generated on mixed concrete FA 5%, SF 2%, SP 2% has the fastest initial time setting ie 251 minutes of all variations of concrete mix.
ANALISA STATISTIK DEBIT BANJIR DAN DEBIT ANDALAN SUNGAI KOMERING SUMATERA SELATAN Redaksi Tim Jurnal
FORUM MEKANIKA Vol 6 No 2 (2017): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1600.974 KB) | DOI: 10.33322/forummekanika.v6i2.118

Abstract

River flow discharge is one of the most important hydrological parameters for the management of water resources because river flow data is required for future pusposes assuming the process characteristics are unchanged. Komering River is one of the largest rivers in the Province South Sumatra which is quite a big role in the lives of people who are in the sub Komering watershed. The magnitude of the flood discharge and dependable flow Komering River is very important to to be taken into account, by analyzing the flood discharge can be done flood management, while by analyzing the dependable flow can be done planning river water utilization. The research based on the collection of secondary data obtained from Departemen Pekerjaan Umum Sumatera Selatan and Balai Besar Wilayah Sungai Sumatera VIII, discharge data from 2000 to 2010 and maps needed to know the study area. All the data are correlated where the analysis is intended to determine the statistics of flood discharge and dependable flow Komering River. From the results of analyzes obtained that the distribution can be used to predict flooding in the river discharge is Gumbel distribution with estimate the flood discharge for 2 years return period 1007.57 m³/dt, for 5 years return period 1459.79 m³/dt, for 10 years return period 1759.20 m³/dt, for 25 years return peiod 2137.50 m³/dt, for 50 years return period 2418.15 m³/dt, and for 100 years return period 2696.73 m³/dt. Based on analysis of dependable flow, Month Basic Plan Method, thatLog Pearson III distribution can be used to analyze River Komering dependable flow. The highest dependable flow of is 226.20 m³/dt and the lowest dependable flow is 62.08 m³/dt.
ANALISIS RUMAH KABEL BAWAH TANAH PADA PROYEK PEKERJAAN JARINGAN UTILITAS SKTT 150 KV PLUMPANG - GAMBIR Redaksi Tim Jurnal
FORUM MEKANIKA Vol 6 No 2 (2017): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1396.527 KB) | DOI: 10.33322/forummekanika.v6i2.119

Abstract

Underground cable distribution channels to be excellent especially in big cities like Jakarta. This is because the underground cable distribution is a solution to the difficulty of land acquisition that will be used for top cable networks. Nevertheless, there is an important factor to be considered in implementing the underground cable distribution channel that is the condition of the soil through which the cable. This study aims to determine the dimensions of the cable house was safe from the soil instability. The soil instability are the stability of bolsters and the shear stability and take into account the carrying capacity of the foundation used. The data used as a reference in the analysis using research data that has been done previously. In stability analysis and foundation bearing capacity used Geo5 software demo version aid. The results obtained from the analysis, with variations on the dimensions of the cable house used are 2 mx 2 m, 2.5 mx 2.5 m and 3 mx 3 m, it is seen that the greater the dimensions used then the security number of stability bolsters, soil shear stability and the carrying capacity of the foundation decreases. This is due to the greater the dimensions of the cable house used, the greater the burden borne by the soil.
PENGGUNAAN PASIR LAUT TERHADAP KUAT TEKAN BETON KOTA BENGKULU Redaksi Tim Jurnal
FORUM MEKANIKA Vol 6 No 2 (2017): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1119.93 KB) | DOI: 10.33322/forummekanika.v6i2.120

Abstract

This research was motivated by the use of sea sand to the availability of large amounts in Bengkulu city. The purpose of this study was to determine the quality of sea sand physically and to compare the compressive strength of concrete with the dunes and river sand. Sea Sand which were used in this study wereSelolongSea Sand, LakokSea Sand and Air Padang Sea Sand. The specimens were the cubical size 15 cm x 15 cm x15 cm of 40 samples with 2 types of treatment namely salt water and fresh water treatment. The planning of concrete used 0,5fasand 60-100 mmslump, The testing was done at 28 days. The result of this study showed that for doing the inspection of sand quality physically, all the tests fulfilled the requirement setexcept in the inception of sieve analysis for Air Padang sea sand, which has a very fine grain. The highestincreased of concrete compressive strength was atLakok Sea Sand, which was 3.86% of the dunes, and 4.77% for the treatment of river sand for freshwater. For the treatment of Lakoksalt water on the dunes increased to 2.22% and on the river sand increased 3.74%. Air Padang Sea Sand has the biggest reduction the compressive strength of concrete, most notably in the treatment of fresh water on the dunes of 10.33% and 9.54% of the river sand. For salt water treatment, Air Padang Sea Sand had a greater reduction which was 14.61% of the dunes and 13, 33% of the river sand.
SISTEM DRAINASE ALIRAN BAWAH TANAH UNTUK DAERAH RAWAN LONGSOR (STUDI KASUS SUB DAS SUNGAI CIKAPUNDUNG, BANDUNG) Redaksi Tim Jurnal
FORUM MEKANIKA Vol 6 No 2 (2017): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1295.511 KB) | DOI: 10.33322/forummekanika.v6i2.121

Abstract

Cikapundung River Restoration lies in a river border with a steep sloping slope and waves to the west - east which is formed from the flow of the river cikapundung. Generally, the soil structure of the Cikapundung River Basin slope is residual ground, corrosion stone and colluvial deposition,which caused vulnerable to landslides. It was also separate and able to keep water. Therefore, shear strength is weak, especially if water is saturated. In this case landslides always occur when it rains. In general, this is due to high rainfall with a certain duration, thus causing the stability of the slope is disrupted. Another cause is the non-functioning drainage system because it is covered by some material from the slopes submitted by water. Therefore, the water rubs the slope.
STUDI KOMPARASI ANTARA PRACETAK MASIF DAN FLY SLAB STUDI KASUS: STRUKTUR GEDUNG RUSUNAWA SURAKARTA Redaksi Tim Jurnal
FORUM MEKANIKA Vol 6 No 2 (2017): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1870.788 KB) | DOI: 10.33322/forummekanika.v6i2.123

Abstract

Fly slab is one of the precast concrete slab technological development that has been researched and patented by Ir . Sulistyana in 2011. The concept is how to reduce the mass of precast concrete slab with makes ribs on the concrete slab. To minimize the volume of concrete plate and while maintaining tensile area to makes the style transfer mechanism of concrete to reinforcement or otherwise, are expected to reduce the mass of the structure without reducing strength. Comparative study will be conducted in this research based on Planning of Building Construction Rusunawa in Surakarta, Central Java. This comparative study is done by compare the results of the structural design Rusunawa existing Surakarta and ready to build using conventional precast concrete massive, with a new structure plan Rusunawa Surakarta with using fly slab as material plate, beam and column structural elements using conventional concrete. Based on the analysis results, showed reduction in the volume of concrete and reinforcement elements beam and coloumn Rusunawa Surakarta structure is 20,25% and 6,3 %. Reduction reaction in the vertical structure of the Rusunawa Building in Surakarta is 16,93%.
PEMANFAATAN MATERIAL LOKAL DALAM PEMBUATAN ASPAL PORUS TIPE AC-WC YANG AMAN DAN RAMAH LINGKUNGAN Redaksi Tim Jurnal
FORUM MEKANIKA Vol 7 No 2 (2018): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (373.557 KB) | DOI: 10.33322/forummekanika.v7i2.199

Abstract

Surface of highway pavement is wet during rain and drowned by stormwater. This situation can makes slip of vehicle wheels and causes an accident. Porous asphalt is a new generation in flexible pavement. Porous charactheristic can be obtained by using less fine aggregates comparing the normal one so it has more voids. We can expect the pavement has higher skid resistance and its voids can be functioned as drainage in mix. This type of pavement developement also strongly depends on availability of the approriate local material for that we can produce a good performance porous asphalt which is described in this paper. Consideration of so many problems can be taken apart, the research is limited in modification design of asphalt concrete wearing course using porous asphalt mix exploits South Sumatera aggregates. After investigatives classification of aggragates, the fine aggregates (sand) can be reduced significantly to obtain a large amount of voids by 6.1% asphalt used. However, this porous structure also causes defect, mainly the stability degradation in mix. So the future research will continue to formularize a better stability performance from pavement variety expected
MODEL INDIKATOR KINERJA PROYEK PADA SEKTOR BANGUNAN PERUMAHAN BERTINGKAT TINGGI REGIONAL D.K.I. JAKARTA Redaksi Tim Jurnal
FORUM MEKANIKA Vol 7 No 2 (2018): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (724.32 KB) | DOI: 10.33322/forummekanika.v7i2.200

Abstract

Successful projects require an increase in project performance to maintain development aesthetics and productivity. Civil Engineer needs to know the indicators in improving project performance. The research aims to identify key performance indicators that include quality, cost, and time criteria in the contractor's perspective and models of indicators that have a significant influence on the project of regional high-rise residential using Structural Equation Modeling (SEM) - Partial Least methods Square (PLS). The study was used a questionnaire survey. Questionnaires containing performance indicators were developed using a fishbone diagram approach and verified through interviews with experts in construction projects. The result used to determine the level of importance of indicators with the SEM-PLS method. The results show 40 performance indicators identified in the study. All indicators are grouped in 5 criteria, namely: Human Resources, equipment, material, work methods, and finance. The results of the SmartPLS calculation show a model with 18 main indicators that have an influence on project performance on the criteria of cost, quality and time. Three indicators with the highest level of influence are Training of workers on a regular basis, Complying with K3 when working in the field, and Multi-level supervision according to the project organizational structure.
ANALISIS PENGARUH PENAMBAHAN LIMBAH KARET TERHADAP DURABILITAS DAN FLEXIBILITAS ASPAL BETON (AC-WC) Redaksi Tim Jurnal
FORUM MEKANIKA Vol 7 No 2 (2018): JURNAL FORUM MEKANIKA
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (192.788 KB) | DOI: 10.33322/forummekanika.v7i2.202

Abstract

Availability of roads is an absolute prerequisite for the entry of investment into a region, for this reason it is necessary to plan strong, durable and high durability pavement for plastic deformation. Damage in Indonesia is generally caused by excessive loading. The cause of damage to this pavement requires the use of material for higher quality road pavement in the form of aggregate material as a filler and asphalt as a binder. The addition of rubber waste to the concrete asphalt mixture is a solution for highway planning and reducing pollution of rubber waste produced by rubber factories. From the results of the addition of rubber waste mixture affect the flexibility and durability of asphalt, Marshall Quotien value and residual Marshall Stability that affect flexibility and durability when compared with normal mixtures decreased, the decrease in value was due to the number of cavities in the test object mixed with rubber waste. From the results of the mixture of rubber waste produced an optimization value on Marshall stability in the percentage of 6% rubber waste of 93.68% and Marshall Quotien in the percentage of 6% rubber waste of 272.20 kg / mm.
Co-Authors Abdul Haris Ahmad Yani Beni Saputra