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International Conference on Coastal and Delta Areas
Published by Universitas Islam Sultan Agung
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Core Subject : Science, Education,
Earth & Planetary Sciences Other
Arjuna Subject : Psikologi - Psikologi (Lain-Lain)
Articles 121 Documents
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The Causative Factors Of Tidal Land’s Utilization in the Border Area Gajahmungkur Resevoir Eppy Yuliani; Al’ Aswad; Izhati Qhoirina
International Conference on Coastal and Delta Areas Vol 1, No 1 (2015): Management and Engineering in the Sustainable Development on Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Abstract

One of the regional development manifestations in maximizing the field is a phenomenon of rise and subside field utilization in the border region of Gajahmungkur reservoir, Wuryantoro for citizen farming activity. The field which is being utilized is about 1.740.340 m2 or is about 174 acres. This utilization of the field is happening when the dam is subsided in the beginning of the dry season. There are many factors why the field in the border area is utilized. The aim of research is get to know the causative factors tidal land’s border area in Gajahmungkur reservoir, Wuryantoro, Wonogiri Regency is utilized. The research method that used in this research isrationalistic quantitative by collecting the data from the field survey and spreading questionnaire sheets. The analysis method which is used in this research is factor analysis and quantitative descriptive analysis. The result which is got from this research is the utilization of rise and subsided field in Wuryantoro was happening when the dam water is subsided in the dry season and was being utilized by the citizens for cultivation-farming activity. Several factors which become the cause of the rise and subsided field utilization are field-physical factor contains field measure, the price cost of rent and the field sale; government wisdom contains citizens understanding about the regulation of the rise and subsided field utilization and also the socialization of the field utilization toward the citizen; and economic factorcontains the gross level, citizen prosperity and the value of the field from the rise and subsided field, such as an easy access upon the location and the price of the ground sale. It has been being an expectation that there will be a good cooperation between Perum Jasa Tirta I and the citizen to keep the eternality and the function of Gajahmungkur reservoir.
Bending capacity of reinforced concrete beam with a rough aggregate of 2/3 teak pieces Purwanto Purwanto; Iman Satyarno; Andreas Triwiyono
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Abstract

The development of science, especially in civil engineering, demands a better concrete technology. Replacing the rough aggregate with teak pieces of length 2 cm, width 3 cm, and height 2 cm was tried to reduce the weight of the concrete. This wood was selected because of its light. The testing phases included: testing of concrete cylinders and testing of reinforced concrete beam bending. The bending beam test was done by making a specimen with dimension of beam: width 120 mm, height 150 mm, and length 1200 mm. The main reinforcements used were 2Ø10 mm and 3Ø10. For the chock, Ø6-50 reinforcement bar was used. On the test of concrete cylinder results with soaked rough aggregates, it was found that compressive strength at 28 days old was 5.09 MPa and 4.74 MPa for non-soaked aggregate. On the test of reinforced concrete beams with 2 pieces of tensile reinforcement, it was found the average maximum load of 26300 N and average deflection of 6.99 mm. The average of reinforced concrete beam with 3 pieces of tensile reinforcement was 30500 N and average deflection of 8.66 mm. The bending strength of reinforced beam with 3 pieces of tensile reinforcement average was 5.34.106 Nmm. The comparison of calculation result between experiment and theory was found that load and moment for 2 pieces of tensile reinforcement was 0,72%, while comparison between load and moment for 3 pieces of tensile reinforcement was 0,58%. Keywords: teak wood, lightweight concrete, load beam capacity.
Simulation of Coastal Erosion Model to Support Disaster Mitigation in Coastal Sayung, Demak District Ahsan Habib; Suripin Suripin; Denny Nugroho Sugianto
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Abstract

Coastal Sayung, Demak has occurred agricultural land and mangroves conversion for opening the ponds. Land use change inflict 2 small villages sink, namely Tambaksari (1997) and Rejosari (2004). The small villages are damaged by coastal erosion. This coast is an area affected by tides. The study aims to evaluate the erosion in coastal Sayung, by simulation model with mathematic model. The simulation results are calibrated with March and June 2016 bathymetry data. Bathymetry data is obtained by echosounder to acquiring contour depth. Wind data was obtained from NOAA for 10 years. Sediment sampling results indicate the type of silt (72%), clay (24%), and fine sand (4%), with specific gravity 1.51 – 1.85 tons/m3. The data used for hydrodynamics and erosion modeling with mathematic model. The simulation results indicate the greatest erosion value occurs in the transition season I, which is 94,000 m3. Patterns of erosion strongly influenced by the current patterns of a particular season. When the West, current and erosion patterns move towards northeast, and otherwise with the East. The most eroded villages are Sriwulan and Bedono, then Timbulsloko, and the smallest is Surodadi. The results of this study can be used to support disaster mitigation in the coastal Sayung, Demak. Keywords: bathymetry, coastal Sayung, erosion, mathematic model, sediment
CHARACTERISTIC OF EXPANSIVE CLAY SOIL (Case research at Bugel Village, Godong Subdistrict, Purwodadi Regency, Central Java Province) Soedarsono Soedarsono; Pratikso Pratikso
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Abstract

Almost all civil constructions were built on the ground. However, not all soil types can be used for construction due to the load supporting capacity of the soil and the soil deformation that occurs for each different soil type. One type of soil that has many problems on its supporting capacity is expansive clay soil. It is a type of soil that has a mineral content that easily absorbs water in wet conditions and also release water easily in dry conditions so that is soil can swell and shrink in a relatively short time. The purpose of this research is to know expansive soil characteristic in Bugel Village, Godong District, Purwodadi Regency, Central Java Province covering physical and mechanical properties. Based on laboratory tests, the soil in Bugel Village has Waverage = 60.90%. From result of atterberg limit test obtained result LL = 90,75%; PL = 24.138%; SL = 23.759%; And PI = 66.612%. According to Raman with a PI of 66.612% already shows the soil is expansive ground. For Gravity Specific the results is 2,782, indicating the soil contains Montmorillonite minerals that have high passivity properties. The AASTHO classification of soil is incorporated into groups A-7-6 whereas for USCS classification is incorporated into CH zones and for English classification is entered into the zone between CV and CE. Of the three classifications can be drawn the clay soil area has a high plasticity value. For standard compaction test result, the characteristic value for maximum γunsat = 1,389 gr / cm2, γsat maximum = 1.78 gr / cm2, Woptimum = 31,46%, and n = 58,92%. And for soil swelling test can be seen the percentage of swelling is very high that is about 274%. Keywords: Soil Charactreristic, Expansive Clay Soil, Montmorillonite, Bugel Village.
An Analysis Of Stability Slope By The Use Of Bamboo As An Alternative Bracing (A Case Study: Road Area Grogol Semarang City ) Bagus Ratna Saputra; Singgih Tri Hatmodjo
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Abstract

Landslides often occurs because caused by rain , earthquake , and the load that stands in an area of the slope . .then of it badly needed handling landslide effective and efficient , to danger due to landslide could be on tap . During this in handling landslide do with using a retaining wall of land, the plaster , and the installation of geotextile. In this research by the use of bamboo terucuk as bracing of slopes on urban Village Road Grogol Pudak Payung Semarang City it is hoped can increase the stability of a slope , the reeds are in use is bamboo a rope with a diameter of 15 cm and bamboo betung with a diameter of 25 cm. Analysis on the plaxis v.8.2 and geoslope. The results of the study showed that, 1) of a series of land test showed c = 37.265 kn/m2,  = 13º, γsat = 18.854 kn/m3, γunsat = 14.866 kn/m3. 2) bamboo data : ea bamboo petung = 7.31x105 kn/m, ei bamboo petung = 850.25 kn.m2, ea bamboo tali = 6.3x104, ei bamboo tali = 145.6 kn.m2. 3) the condition slope in the way of grogol unstable which the figures security the state of experience is sf = 1.4866, and after in give burden sf = 1.4856, after in give bracing of with the bamboo and analysis from safety factor is showed factors sf = 1,8339 where the was assumed safer if safety factor (sf) >1.5. Keywords: stability slope , bamboo petung , bamboo rope , security factor .
Feasibility Study And Investment Analysis Of Mix Use Sentraland Semarang Soedarsono Soedarsono; Kartono Wibowo; Pramodya Pramodya
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Abstract

The construction of high-rise buildings is being done in urban areas, especially vertical buildings due to the low availability of land. The longer development of the building leads to more complex functions resulting from the fulfillment of needs for the surrounding community so that the development of the building that can accommodate all the needs of the community is the mix use building. Building with this combined function certainly has a more complex influence both in terms of economic and environmental. Required detailed economic calculations in order to obtain maximum results from the building, especially for investors who have invested for the construction of the building, for that needed a feasibility study and investment analysis. So before the project is carried out can be taken whether the project is feasible to do or not according to the results obtained calculations. The results of this study show that the feasibility study and investment analysis of mix use building that has been done can give a clear picture about the profit or loss of the project implementation for the owner who will invest or the building manager later. Keyword: Feasibility study, Investment analysis, Mix use building, Economic engineering
THE EFFECCT OF PAVER JOINT WIDTH ON THE CONSTRUCTION OF CONCRETE BLOCK PAVEMENT ON SLOPING ROAD SECTION Rachmat Mudiyono
International Conference on Coastal and Delta Areas Vol 1, No 2 (2015): the 2th International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Abstract

This research presents the construction of concrete block pavement (CBP) on sloping road section that influences the joint width between blocks. The effect of load transfer on the CBP behavior is discussed. The results of a series of tests conducted in laboratory with horizontal force test. The horizontal force testing installation was constructed within the steel frame 2.00 x 2.00 meter and forced from the side until CBP failure (maximum horizontal creep). The optimum joint width between blocks is 3 mm. For joint widths less than the optimum, the jointing sand was unable to enter inside between blocks. A large amount of sand remained outside the joint showing sand heaps on the block surface. The effect of the degree of slope on concrete block pavements on sloping road section area is significant with friction between blocks and thrusting action between adjacent blocks at hinging points is more effective with thicker blocks. The spacing of anchor beam will be increases with decreasing joint width.Keywords: Optimum, Joint width and Horizontal Creep.
DETERMINATION OF THE CRITICAL INDICATORS OF RAOD PERFORMANCE FOR DISASTER EVACUATION ROUTE IN THE COASTAL AREA, PADANG CITY, INDONESIA Insannul Kamil; Difana Meilani; Nilda Tri Putri; Buang Alias; Mego Plamonia
International Conference on Coastal and Delta Areas Vol 1, No 2 (2015): the 2th International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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It is the time for road infrastructure management system to switch the perspective of life plan-based management to another approach which is more efficient in terms of budgeting and can optimize road performance. The use of performance indicators has been recommended for this. This study aims to formulate the performance indicators for Performance Based Contracting (PBC) method widely used now now. These performance indicators are formulated for West Sumatera Province, designated as disaster zones. The integration of the three qualitative methods, namely the Delphi method, AHP and method of Natural Cut-off Point has succeeded in formulating indicators. Delphi method is used to identify indicators, while the AHP is used to prioritize the indicators and the last, the method of Natural Cut-off Point is used to select the critical indicators. A total of six critical indicators are identified, namely damage at the end of pavement, drainage, culverts, Potholes, width of pavement and cracking.Keywords: Indicators, road performance, critical, disaster and coastal area.
Wind Power for Irrigation Water Pump a Case study in Gedangan village Benny Syahputra; Nafiah .
International Conference on Coastal and Delta Areas Vol 1, No 1 (2015): Management and Engineering in the Sustainable Development on Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Abstract

Water is a vital thing for the rice field. Field will never able to produce rice withoutsufficient water. Some methods are used to irrigate rice field, among others by using water pump, the method that also have been used in Gedangan village, Distric of Rembang, Nothern-East of Central Java Province. Based on data issued by Institute for Environment and Agricultural Research in 2010, the annual wind speed in the agricultural area of Gedangan village, minimum is 2.3 m/s and maximumis 9.2 m/s. This paper reported the study of using the prevailing wind speed to power the water pump for rice field irrigation purpose in Gedangan village. The combination between design and experimental were used in this study. In the experimental works were found that independent variable, such as wind speed and the revolution speed of the windmill, and dependent variable, such as amount of water flow out from the pump, have a relationship. The results show that wind power, with the above prevailing wind speed, only possible to power the water pump to irrigate the small-area of rice field.
Structure Design of Parking Building on Delta Areas Bambang Wuritno
International Conference on Coastal and Delta Areas Vol 1, No 1 (2015): Management and Engineering in the Sustainable Development on Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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The case study in this research is Parking building (Tower C), Project Sunter Park View Apartment is a public facility that serves as a parking garage. It located on the Yos Sudarso Street Kav 30A, Sunter Jaya – North Jakarta ( on Delta Areas ). This building consists of 4 floors including the roof plate with a typical floor plan for each level. Floor to floor elevation is 3 meters height, so the total height of the building reach 9 meters height (less than 40 meters height). Review Design Parkingbuilding structure (Tower C) Project Title: "Structure Design OfParking Building Sunter Park View Apartment With The Equivalent Static Analysis Method” , wherein the influence of earthquakes on structures analyzed by Equivalent Static method based on the Standard Provisions Design for Earthquake Resistance of Building Structures (SNI 03-1726-2002). Structural components of buildings designed by Special Moment Frame System Bearers (SRPMK) based on Procedure for Calculation of Concrete Structure for Buildings(SN03-2847-200). Foundations including the type of float because the soil under the foundation as a whole is a soft clay

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