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Dian Sestining Ayu
DIV TPPIS/Departemen Teknik Sipil, Sekolah Vokasi, Universitas Gadjah Mada, Indonesia
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering

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Analisis Volume Limpasan dengan Metode Green-Ampt Rena Sempana Wahyu Putri; Dian Sestining Ayu
Jurnal Nasional Teknologi Terapan (JNTT) Vol 2, No 2 (2018): JULI
Publisher : Penelitian dan Pengabdian Kepada Masyarakat Sekolah Vokasi Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (354.396 KB) | DOI: 10.22146/jntt.42774

Abstract

The development of modern era involves the economic, industrial and population growth and also increase of the social needs which cause the increase of the land needs. Land conversion which happens today has a negative impact on the environment and can damage the potency of the land use itself. One of the negative impacts of the land use conversion which are unwell planned, unwell patterned and not aware with the environment is the increased of the run-off volume due to the decrease the ability of the soil infiltration. If there is no further management of the land conversion, it will cause the increase of the annual peak discharge and has the potential to cause the flood. Green-Ampt is one of the method that can be used to analyze run-off volume by estimating capacity and infiltration rate. In Green-Ampt Method there are some parameters that affect the result of the analysis which are related to vegetal cover and soil parameters such as suction head, hydraulic conductivity, initial moisture, and saturated moisture condition of the soil. The aims of this study are to give the additional information and knowledge related to the run-off volume potency in the study area which has been conducted using Green-Ampt Method for the analysis. Hope the result can be used as the reference in management of water resources potency especially in study area, there are Sub Watershed Pogung, Kaloran and Papringan. From the analysis it is known that there is a different result between observed run-off volume and run-off volume by GreenAmpt Method. The difference of the result can occur because of the different intepretation data on both methods. Analysis by observed run-off volume shows that there are run-off for all of the flood event, while the analysis by Green-Ampt Method shows that run-off only occured in one flood event.
Ketahanan Papan Partikel Terhadap Suhu Tinggi, Serapan Air dan Perilaku Patah Dian Sestining Ayu; Edi Kurniadi
Jurnal Nasional Teknologi Terapan (JNTT) Vol 2, No 3 (2018): NOVEMBER
Publisher : Penelitian dan Pengabdian Kepada Masyarakat Sekolah Vokasi Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (304.92 KB) | DOI: 10.22146/jntt.44941

Abstract

Wood is widely used for structural and non-structural purposes. In non-structural purpose, wood is used, among others, as furniture, parquet (wood floor), partitions and so on. In line with the decreasing availability of wood, the price of wood is becoming increasingly expensive. In certain uses, substitute materials such as particle boards have been started to use. Particle boards are generally composed of certain wood powder wastes. This study aimed to look for alternative materials for building particle boards from coconut shells. The particle boards to be tested were composed of coconut shells with the addition of certain wood powder which is added with certain percentage. Particle boards were printed with a certain size, given certain pressure and tested for their physical properties. The physical properties of the particle boards tested included particle density, water absorption, dry flexural modulus, and dry bending fracture modulus. The results showed that the best mixture composition capable of producing density values, water absorption, fracture modulus and optimum modulus of elasticity were found in the proportion of mixtures of 70-90% coconut shell particles and 30-10% wood particles.
Co-Authors Edi Kurniadi Rena Sempana Wahyu Putri