Hari Nugroho
Jurusan Teknik Sipil FT. UNDIP Jl. Prof. Soedarto SH. Tembalang, Semarang 50275

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PERENCANAAN SISTEM JARINGAN TAMBAK GARAM DI PEMONGKONG KABUPATEN LOMBOK TIMUR Rano Adiyoso; Ricky Darmawan; Abdul Kadir; Hari Nugroho
Jurnal Karya Teknik Sipil Volume 3, Nomor 1, Tahun 2014
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Jerowaru Pemongkong village district of East Lombok, West Nusa Tenggara is one of the salt producing areas. Water systems that do not meet the technical standards causing the low production of salt. In efforts to increase production and quality, a need to increase salt production system by using a standard technical planning. In this plan, the planning standards used are salt production system in Korea is the ratio of the reservoir : evaporation area : crystallization area = 55 : 30 : 15, a water supply system with pumping and other buildings such as intake planning, channel and floodgates that refer to the Technical Irrigation Planning Standards. At the beginning of the planning is done making salt ponds plot layout, plan continued with dimensions and elevation intake structure, reservoir, evaporation area, crystallization area and the channel of a water carrier, so that the water supply can be guaranteed. From the study sites were sampled an area of 10.79 ha, gained 5.39 ha of reservoir, 3.24 ha of evaporation area and 1.62 ha of crystallization area. According to the criteria of the salt pond water depth according to the Ministry of Marine Affairs and Fisheries of the Republic of Indonesia, the water level in the reservoir is 50 cm, the water level in evaporation area is 30 cm, and the water level in crystallization area is 5 cm. The discharge of primary channel is 0,526 m3/sec, obtained from the analysis of the primary channel dimensions B = 1.50 m,  H = 0.75 m, while the discharge of secondary channel is 0.213 m3/sec, obtained from the analysis of channel dimensions secondary B = 1.00 m, H = 0.50 m. Discharge plan on the culvert at 0.669 m3/sec, obtained from the analysis of the culvert dimensions 1.50 m x 1.50 m. To maintain water supply continuity water pumps were used with capacity of 98.57 liters/sec. By using this system is expected to increase the productivity of salt + 90 tons/ha/year to + 150 tons/ha/year. The cost of manufacture new salt ponds in this area ranges from + Rp . 165,000,000.00 / ha.
KAJIAN METODE PELAKSANAAN SISTEM POLDER KALI BANGER dwi Subandriyani; Muchammad Lutfian Nabil; Suharyanto Suharyanto; Hari Nugroho
Jurnal Karya Teknik Sipil Volume 2, Nomor 4, Tahun 2013
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

Banger river polder system which has 524 ha area is a part of Semarang Centre region drainage system. Banger river polder system is located in East Semarang region and North Semarang region. It is a crowded area with many problems. This area which has low level at soil supporting capacity is flooded by rob almost everytime. So it causes land subsidence every year. On the other hand, land use is another serious problem there with many houses cover the area without proper access road. Construction method evaluation of procurement and pump installation and retention pond and closer dike construction in Banger river polder system need to adapt more further with the real condition on site. Procurement and pump installation works will not be affected significantly by Banger river polder system site location. So that, in retension pond and closer dike works need a construction method which uses dewatering work, temporary dike construction, and determining the hauling route. These works combination produce an effective construction method, construction method using dewatering and bailey bridge. This construction method is a combination between dewatering work and the use of bailey bridge which is based on workability, reducing cycle time, and the economical one. This combination is the most effective, based on work influence indicators which reach 27,05%
KAJIAN PELELANGAN KONSTRUKSI BERDASARKAN KEPPRES 80/2003 DAN PERPRES 54/2010 (Studi Kasus : LPSE Universitas Diponegoro) Nur Wakhid; Wahyu Kuncoro; M. Agung Wibowo; Hari Nugroho
Jurnal Karya Teknik Sipil Volume 2, Nomor 2, Tahun 2013
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Construction sector has an important role in increasing economic growth. To create a condition that all necessary infrastructure that can guarantee an increase in economic activity. Procurement of facilities and infrastructure as well as the government's infrastructure, using the budget of income and expenditure (APBN/APBD). To supervise the use of budget, procurement regulations are arranged Keppres 80/2003 and amended by Perpres 54/2010. The tender process is expected to use electronic media (e-procurement) to be more transparent, accountable, effective and efficient, in line with efforts to eradicate corruption, collusion and nepotism. The method of research used descriptive research. The sampling technique used purposive sampling with data taken from Diponegoro University 2 LPSE and questionnaires to the respondents as service providers, service users, and the auction committee. A descriptive analysis of data processing and data processing using a Likert scale questionnaire on the subject of the study variables. The results of comparative analysis based on the tender for the construction of Perpres 54/2010 is better than the Keppres 80/2003.In terms of the duration of the execution of the auction package is based on Perpres 54/2010 1.76 is faster, there was the time efficiency of 50%. The cost, Perpres 54/2010 is cheaper. In the case of list requirements, both rules have the same relative terms. In terms of accuracy in the selection of service providers in the Perpres 54/2010 be better. In terms of selection of participants is more stringent Perpres 54/2010 instead of Presidential Decree 80/2003. In terms of transparency in the determination of winners, that the new regulations more transparent. General opinion of the regulation services provider 54/2010 is better.