Browsing by Author "Harmiyati, Harmiyati"

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    PEMANFAATAN BENDUNGAN SEBAGAI PERENCANAAN PENYEDIAAN SUMBER AIR BERSIH (STUDI KASUS : BENDUNGAN SEI DORANAN, KEC. LOGAS TANAH DARAT, KAB. KUANTAN SINGINGI, PROVINSI RIAU)
    (2019-11) Harmiyati, Harmiyati; Saputra, Setia Edi
    Hulu Teso Village is a village that was awarded the construction of a dam in the past. In the management of dams in the past as empowering fisheries, but no longer functioned. Currently the dam is only used as a recreation area. Looking at the current condition of the Dorian Sei Dam, it can be used more effectively as a source of clean water or raw water reserves. This is because the village of Hulu Teso had experienced a long dry season which resulted in water drought in the village community dug wells. The purpose of this research is to plan the dimensions of water reservoirs from dam runoff so that they can be a source of clean water supply for the community in Hulu Teso Village. The research method used is qualitative and descriptive that is by collecting population data and observing research locations and calculations based on the 1996 Dirtjen PU Planning Planning Criteria. From the research results obtained water needs for domestic and non-domestic as much as 251,371.44 liters. To meet the water needs of the population, the volume of holding water must be greater than the water requirement (QV> QTair) with dimensions of 7m x 3m x 13m, the amount of 273 m3 or 273,000 liters / day is obtained, the reservoir capacity is able to meet the water needs of the population. To get clean water sources as raw water reserves, filtration is carried out on dam runoff by making water filter buildings, so that water that enters the reservoir can be used as a source of clean water.
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    Pengaruh Air Gambut Terhadap Kuat Tekan Beton
    (wahyu sari yeni, 2019-01-09) Harmiyati, Harmiyati
    Concrete is one of the most widely used components for construction of buildings, bridges and other constructions. The strength of concrete depends on the composition and strength of the concrete forming material. The curing method also affects the strength of concrete. Riau Province is one of the provinces that has the largest peatlands in Indonesia. Therefore, it cannot be denied that there are still people in the peat area who still use peat water for concrete mixes. Because the long distance between the source of clean water and the location of the work causes the work to utilize the water that is around the work site so that it can accelerate concrete work. This study uses the SNI 03-2834-2000 method with a cylindrical specimen with a diameter of 150 mm and a height of 300 mm, testing at 28 days, with each day 3 cylindrical test objects were made. The planned concrete quality is fc '25 MPa, with 30 - 60 mm cement water, using fresh water from the borehole of the Faculty of Engineering, Islamic University of Riau and peat water from Bagansiapi-api, Rokan Hilir Regency as water for mixed and concrete maintenance. From the compressive strength test of concrete, the highest value of concrete compressive strength was obtained when concrete used fresh water as a mixture and concrete treatment is at 28 days 35,670 MPa, while the concrete compressive strength using peat water as a mixture and the highest treatment at 28 days 26,632 MPa. Combined results with the use of fresh water as a mixture and peat water for maintenance obtained the highest concrete compressive strength at 28 days 29,132 Mpa. While the use of peat water as a mixture and fresh water as a treatment obtained the highest yield of 28 days 25,671 Mpa. It can be concluded that the use of peat water in this study can still be said to be feasible to use because it still meets the compressive strength of the plan