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Civil Engineering Forum Teknik Sipil
Published by Universitas Kristen Petra Surabaya
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Arjuna Subject : -
Articles 10 Documents
 1 
Search results for , issue "Vol 18, No 2 (2008): MEI 2008" : 10 Documents clear
SISTEM INFORMASI PENGAWASAN KENDARAAN ANGKUTAN BARANG PADA JEMBATAN TIMBANG UNTUK PENENTUAN PELANGGARAN MUATAN LEBIH DAN DAMAGE FACTOR (Studi Kasus Daerah Istimewa Yogyakarta) Simatupang, Rudy Handry Halomoan; Sartono, Wardhani; Christady H, Hary
Civil Engineering Forum Teknik Sipil Vol 18, No 2 (2008): MEI 2008
Publisher : Civil Engineering Forum Teknik Sipil

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Abstract

Government has determined maximum limit of axle pressure for vehicle passing in the road of MST (Heaviest Axle Load) < 8 ton, MST 8 ton and MST 10 ton. But, the problem is that there are many overloaded freight vehicles. The lack of control and law application causes the happening of case like overloaded resulting in faster damage than the planned duration and traffic accident involving freight truck. Daerah Istimewa Yogyakarta is a province connecting East java – Central Java – West Java. It has potential to serve traffic flow, either passenger or freight. Therefore it needs a system to control freight vehicle in measuring bridge. Information System of Freight vehicle control (SIWASAL) used reaction analysis of freight vehicle dimension and the calculation of damage factor. Axle configuration discussed based on field observation and load survey carried out by PUSTRANS JALAN in 2002 in Pantura, comprised of 1.1, 1.2, 1.22, 11.22, 1.2+22 (coupled freight vehicle), 1.22+22 (coupled freight vehicle), 1.2-2 (attached freight vehicle), 1.2-22 (attached freight vehicle), 1.22-22 (attached freight vehicle), 1.22-222 (attached freight vehicle). The result of this system helped the operator of measuring vehicle weight limit’s in applying the law and could be used by the government as the database in controlling, planning, maintaining and developing road pavement and give information, either to the employer of freight vehicle and society. The release of data process will present the number of the vehicle, trade mark/type, the name of the company, origin/destination, type of goods loaded, JBB, JBI, the weight of each vehicle axle, loading capacity, MST and vehicle damage factor. The recapitulation of freight vehicle control comprised of vehicle type, the name of the company, origin, destination, type of goods and axle configuration comprising of damage factor amount presented in the form of graphic periodically.
PEMANFAATAN BGA (BUTON GRANULAR ASPHALT) SEBAGAI BAHAN PENGGANTI AGREGAT HALUS PADA CAMPURAN HRS-WC SECARA LABORATORIUM Prawira, Abdi; Suparma, Latif Budi
Civil Engineering Forum Teknik Sipil Vol 18, No 2 (2008): MEI 2008
Publisher : Civil Engineering Forum Teknik Sipil

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Abstract

Along with the improvement and development for keeping the road infrastructure in Indonesia, it is important to be far more comprehends and does testing to exploite nature material. The development of the existing firm layer material technology is very fast, to create technological innovation to efecienti cost, optimalisation of material exploition, expansion of natural material, and environmental friendliness like BGA (Buton Granular Asphalt) in the place of smooth aggregate at mixture HRS-WC. Exploition of BGA for the subsitution of fine aggregates done at this research through volume equivalent, using various comparison of fine aggregates used by BGA are (0%:100%), (25%:75%), (50%:50%) and (100%:0%). Method applied is Marshall and immersion, and determines optimum asphalt content from each various specimen. Specimen at optimum asphalt content was immersed ½ hour (Marshall Standard) and 24 hours, then Marshall test is done. Marshall test and immersion are done to study the influence of various usage of BGA based on its stability values and indexs of retained strength. The result of this research shows optimum asphalt grade of specimen with various BGA of 0%, 25%, 50%, 75% and 100% is 6.37%; 4.85%; 4.49%; 4.15% and 4.55%. At Marshall standard various BGA 0%, 25%, 50%, 75% and 100% stability value of 1340 kgs, 1700 kgs, 1765 kgs, 1589 kgs and 1520 kgs is obtained while index of retained strength is 99.57%; 75.63%; 70.02%; 94.12% and 72.87%. These results show that utilization of BGA can reduce optimum asphalt grade, increase stability values and durability indexes on the HRS-WC mixture. Keywords : HRS-WC, BGA (Buton Granular Asphalt), Marshall.
PEMANFAATAN BATU “APE“ DARI SUNGAI LUA KABUPATEN KEPULAUAN TALAUD SEBAGAI ALTERNATIF BAHAN BANGUNAN Pongajow, Gerson; Satyarno, Iman; Tjokrodimuljo, Kardiyono
Civil Engineering Forum Teknik Sipil Vol 18, No 2 (2008): MEI 2008
Publisher : Civil Engineering Forum Teknik Sipil

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Abstract

Talaud Archipelago Sub-Province is one of the Sub-Provinces in North Sulawesi Province, the growing result of Sangihe and Talaud Archipelago Sub-Province in 2002. This growth followed by the development in all fields, including the infrastructure development which is based stone from outside of the island. This research is done to explore the local potential and also to test laboratory that the local stone can be used as alternative construction materials. In this study, there are 85 stone cube which are used to test it’s strength. Each variant of test is 5 stone and the factor will be given to the stone is the temperature which is 200oC, 400oC, 600oC and 800oC in 15, 30, 60 and 120 minutes. And then follow by checking the rout aggregate nature. Next step is to make concrete which is made by the mix of the aggregate of “Ape” stone and the sand from River Lua Talaud Archipelago and also concrete which is used the mix of the “Ape” stone aggregate and the sand from mount Merapi in Yogjakarta. The result shows that the heat of “Ape” stone can increase the strength of the stone. In the beginning, the strngth is 6,052 MPa., and then maximum increase until 37,43 MPa., after been heated in 400oC temperature for 120 minutes. The aggregate of the“Ape” stone which is been heated includes the lightweight aggregate which can be used directly as an alternative of Red Stone. Concrete as the mix of the “Ape” stone which is heated before, and the sand from Lua River with fas of value 0,5 and 410 kg/m3 cement weight. the weight of ratio concrete 2, 04 kg/dm3 and strength 12, 88 MPa, and also concrete which is mix by the “Ape” stone and the merapi mount sand with fas of value 0,5 and 410 kg/m3 cement weight, the weight of ratio concrete 2,12 kg/dm3 and strength 15,79 MPa. Result, the concrete is the lightweight concrete with the B0 and B1 class. So the conclusion is the “Ape” stone, can be use as an alternative of construction material.
BATAKO STYROFOAM KOMPOSIT MORTAR SEMEN Wancik, Ahmad; Satyarno, Iman; Tjokrodimuljo, Kardiyono
Civil Engineering Forum Teknik Sipil Vol 18, No 2 (2008): MEI 2008
Publisher : Civil Engineering Forum Teknik Sipil

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Abstract

Research in construction material by exploiting styrofoam as lightweight concrete, gives result that a construction material will have a lighter weight if it is mixed with styrofoam, and achieve a lower strength. This research were try to improve the strength of styrofoam concrete block composite by giving cement mortar mixture as an outer layer. The specimen of concrete block composite will be made with concrete method of preplaced concrete, where initially by putting down the concrete block composite with styrofoam into a mold according to various thickness of outer layer required, and mortar mixture as outer layer around it. It was found that the compressive strength of concrete block with various outer layer thickness of 5, 10, and 15 mm without cord net were reached at 2.52 MPa, 5.44 MPa and 7.49 Mpa respectively with weight per piece were 7.60 kgs, 9.06 kgs, and 10.23 kgs. The compressive strength of concrete block with cord net size 100 mm² were reached 3.27 MPa, 5.75 MPa and 8.58 MPa respectively with same various outer layer thickness and weigh per piece reached at 8.06 kgs, 9.15 kgs, and 10.28 kgs. Water absorption of outer layer were achieved 2,01 % and 7,06 % for soaking during 10 minutes and 24 hours respectively. Generally, the composite styrofoam concrete block with cement mortar outer layer thickness of 5 mm, 10 mm and 15 mm has meet a clauses of SNI requirements to solid concrete block for concrete block quality IV, quality III and quality II.
PENGELOLAAN SEDIMEN KALI GENDOL PASCA ERUPSI MERAPI JUNI 2006 Rahmat, Ali; Legono, Djoko; Kusumosubroto, Haryono
Civil Engineering Forum Teknik Sipil Vol 18, No 2 (2008): MEI 2008
Publisher : Civil Engineering Forum Teknik Sipil

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Abstract

The Gendol River, with its catchment area of 66 km2 and the river length of about 22 km, originates from the south east of Mount Merapi. Nineteen sabo dams have been built in order to anticipate and control sediment disaster. The most upstream dam is Kaliadem (+1.100 msl) and the most downstream dam is consolidation dam of GE-C0 (+163 msl). Sand mining occurs at several points along the river and cause environmental damage. In order to conserve environment and to maintain sediment balance a proper sediment management is required. The research is conducted based on sediment balance. The analysis of transportable sediment volume (VS) is conducted using empirical formula of Takahashi (1991) and Mizuyama (1977). Over flow sediment volume (VE) was analyzed using empirical equation of Shimoda (1995). Sediment balance was analyzed based on maximum daily rainfall (R24) with 25 years return period. The result of the study shows that the sabo system in Gendol River effectively works to control lahar flow. As a conclusion, the existing sabo dams are able to maintain sediment balance in Gendol River. The possible amount of sand mining is estimated about 1.253.422 m3 and the allowable daily sand mining volume is estimated about 836 m3 per day.
PEMANFAATAN LIMBAH KERTAS KORAN UNTUK PEMBUATAN PANEL PAPERCRETE Gunarto, Arief; Satyarno, Iman; Tjokrodimuljo, Kardiyono
Civil Engineering Forum Teknik Sipil Vol 18, No 2 (2008): MEI 2008
Publisher : Civil Engineering Forum Teknik Sipil

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Abstract

The availability of natured material for construction is so limited and in the other hand it’s demand increase. The consequence is try to explore alternative materials such as waste material which has not been explored as construction material. The recycled paper were chosen to be used as a filler component and mixed with cements as a bonding agent. Hence paper fiber include other paper ingredients will become construction material and at the same time to minimized the impact of waste paper to environment. One of the way to enhanced the paper and cements mixture quality as a component of concrete panel were by adding an admixture. Cements and water mixture are the bonding agent, while the filler material are paper and sugar cane admixture as the retarder. This mixture can be categorized as a light concrete. If it used as a papercrete panel will be the alternative building element to reduc dead load for the main structures. A light concrete panel from a mixture of news paper powder and white cement as a bonding agent, forms panel through cold pressed process. Papercrete panel and cube are made for sample with size 420 x 420 x 7 mm³ and 50 x 50 x 50 mm³ respectively. The volume ratio of paper - cements mixture were 2, 3, 4, are made of two condition i.e. without admixtures and with 0,2% sugar cane admixtures concentration by cement weight. The research will find out papercrete unit weight, flexural strength panel, cubical compressive strength, modulus of elasticity, water absorption and the price of concrete panel at every cubic and square meter. The result is concrete unit weight ranges from 840 - 933 kg/m³, the highest flexural strength papercrete panel reached at volume ratio of paper - cements mixture 2 with sugar admixture was 8,36 MPa. The highest the compressive strength reached at the volume ratio of paper – cements mixture 2 with sugar cane admixture was 2,48 MPa. The highest modulus of elasticity at the volume ratio of paper - cements mixture 3 with sugar admixture was 6,48 MPa with water absorption still above 50%. that is lower water absorption 56,93% at volume ratio of paper - cements mixture 2 with sugar cane admixture and the highest absorption at volume ratio of paper - cements mixture 4 was 84,23%. While the increasing of paper powder in mixture, concrete unit weight, flexural strenth, compressive strength and modulus of elasticity papercrete becoming lower with the increasing of water absorption. Addition of sugar cane 0,2% by cements weight haves an flexural strength improvement up to 7,66%, and enhanced compressive strength 50,24%, improvement concrete weight equal to 4,71% and reduced adsorption until 10,7%, but in papercrete product with sugar cane admixture doesn't have significant effect of production budget.
ANALISIS HIDRAULIKA BANJIR TUKAD BADUNG Wiarta, I Nyoman; Yulistiyanto, Bambang; Nizam, Nizam
Civil Engineering Forum Teknik Sipil Vol 18, No 2 (2008): MEI 2008
Publisher : Civil Engineering Forum Teknik Sipil

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Abstract

There is densely populated residence along Tukad Badung reach resulting in the misuse of stream for waste disposal outlet. This condition causes the stream becoming the disposal place of waste, household sewage, and industrial waste. Also, there is erosion and sliding of river bank in the upstream. This condition also causes river reaches to shallow due to sedimentation resulting in the decrease of stream capacity to carry off the flood discharge. During recent years, Tukad Badung has been degraded in its function due to various factors occurring from the upstream to downstream resulting in the stream incapable to carry off the flood discharge optimally. The change of land use occurred in the watershed causes the change in stream flow pattern that can be seen from the high discharge fluctuation during rainy and dry seasons. The objective of this study is to observe 50 year return period flood water surface profile and to determine the flood control alternatives. Hydrology and hydraulic analyses are carried out in the study. Hydraulic modeling of the river system is accomplished using the Hydrologic Engineering Center-River Analysis System (HECRAS) software of version 3.1.2. The stream is assumed to be a single reach using the upstream boundary at AWLR Wangaya and downstream boundary at Nusa Dua estuary dam. The geometric input is conducted for the existing, normalization, and dikes conditions, whereas the flow hydrograph and rating curve are using for upstream boundary and the downstream boundary respectively. Based on the result of hydraulic analysis, the overtopping is occurred at 27 River Stations at the left bank and 23 River Stations at the right bank. The flood controlling by normalization is capable of decreasing flood water surface with the non existence of overtopping both at the left and right banks. The flood controlling by dike is also capable of retaining the flood discharge without the overtopping at the left and right banks. That can be concluded, by normalization or by dike the Tukad Badung is capable of carrying off the 50 year return period flood discharge. Calculation results shows the flood controlling by dike requires cost of Rp 1.118.376.638,35,- and by normalization requires cost of Rp. 1.316.571.000,00,- .
UNJUK KERJA ALTERNATIF PENGENDALIAN BANJIR BATANG ANAI DAN BATANG KANDIS SUMATERA BARAT Eriza, Corri; Istiarto, Istiarto; Sujono, Joko
Civil Engineering Forum Teknik Sipil Vol 18, No 2 (2008): MEI 2008
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Abstract

Flood occurs almost every year due to the floatation of Batang Anai and Batang Kandis. In 2001, the local authority made a plan to control the flood in both rivers, which was implemented in Anai-Kandis River Improvement with the alternatives of controlling flood by handling the river courses, such as improving and widening the river channel, and decreasing the peak of discharges by making dams or retarding basin. Performance of flood control structures are made of three alternatives based on the information gathered. First alternatives suggest for repairing the river course and widening the river channel (with levee) in both rivers and floodway in Batang Kandis. Second alternative is similar with the first alternative except negation the leeve in Batang Anai and replenishment of floodgate in Batang Kandis. Third alternative for Batang Anai is identical to the second alternative and also widening the river channel throughout Batang Kandis. The analysis includes the analysis of sufficiency of channel to drain the design discharge and sediment transport analysis for the alternative with the best performance, which both could be doing with auxiliaries of Software HEC-RAS version 4.0 betas. As the result, controlling river by repairing the river course and widening the river channel throughout Batang Anai and Batang Kandis (3rd alternative) gives the best performance comparing to the others alternatives, due to the fact that it could be able to canalize the design discharge of Q50 (1417 m3/s) in Batang Anai and Q25 (293 m3/s) in Batang Kandis. The simulation of transport sediment in Batang Anai with the 3rd alternatives implementation shows the biggest trend of erosion and deposition in a row, located next to National bridge downstream (RS 108) and precisely in downstream of RS 108 i.e., RS 107.
KAJIAN FOCUS GROUP DISCUSSION (FGD) DALAM MITIGASI BENCANA TSUNAMI DI DESA PONCOSARI Dwiatno, Achjat; Triadmadja, Radianta; Darmanto, Darmanto
Civil Engineering Forum Teknik Sipil Vol 18, No 2 (2008): MEI 2008
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Abstract

Disaster mitigation require to be supported by information and data regarding the condition of local society characteristic and area. The available of correct information and data, expected can maximize usage of local resource, including labour, organization and material. One of the partisipative data collecting method able to be used to dig catastrophic society perception and understanding of tsunami is Focus Group Discussion ( FGD). Participant one of the important element in FGD, so that participant composition can influence attainment result of FGD. This research aim to know society characteristic and condition to formulate FGD participant criterion and composition in tsunami disaster mitigation. This Research type is descriptive research with approach qualitative, while primary data collecting use partisipative observation technique where researcher follow to involve and at the same time perceive FGD simulation execution. Discussant which uppermost enough is them owning catastrophic understanding and knowledge of tsunami nature, where this matter is influenced life experience or relate to its work responsibility. Several things which need to be paid attention in chosening and determining discussant: 1) education and age vary to start from student age until the old man with mean 35 year, 2) do not predominate by age, certain work or education, 3) if education of [him/ it] lower to be expected to have experience which enough or which is its old age, 4) entangling woman participant owning catastrophic understanding and knowledge of tsunami, 5) having work or got mixed up with interconnected activity or relate to natural disaster handling.
KAJIAN GENANGAN BANJIR SUNGAI MUKE DI KABUPATEN TIMOR TENGAH SELATAN PROVINSI NUSA TENGGARA TIMUR DAN UPAYA PENGENDALIANYA Nahak, Priska G.; Istiarto, Istiarto; Yulistyanto, Bambang
Civil Engineering Forum Teknik Sipil Vol 18, No 2 (2008): MEI 2008
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Abstract

Muke River is an ephemeral river located in District of Timor Tengah Selatan, Nusa Tenggara Timur Province. Flood occurs during rainy season inundating farm land and residensial area. Previous work has been done by Petrus G Bay (2007) indicated that flood levee and river normalization, could not purent flood from flowing into river bank around Oebelo and Toineke villages. Present work deals with flood prevention by the use of retention area to reduce peak discharge and/or flood water level. Flood simulation was performed by the aid of HEC-RAS mathematical model. The result of simulation show that the main cause of flood retention is the limited flow capacity of the river. Under existing condition and Q10=575 m3/s, river bank overflows occurs in 83.4% of entire river reach. Three retention areas of 3 x 50 ha are proposed along Muke River. These can reduce the peak flow by 73% and river bank overflow by 69%.

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