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All Journal JURNAL KARYA TEKNIK SIPIL
Siti Hardiyati
Jurusan Teknik Sipil FT. UNDIP Jl. Prof. H. Soedarto SH., Tembalang, Semarang 50275
Civil Engineering, Building, Construction & Architecture

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PERENCANAAN PENGGANTIAN JEMBATAN JUWET KABUPATEN PEMALANG Andhy Satriya Wardhana; Mohamad Irzam Hasani; Moga Narayudha; Siti Hardiyati
Jurnal Karya Teknik Sipil Volume 4, Nomor 4, Tahun 2015
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Juwet Bridge is located approximately one kilometer to the south of Comal Bridge Pemalang District is one of the alternative bridges used when the Comal Bridge collapsed. In this final Juwet Bridge which has a width of only 3 meters is designed with a larger capacity and functioned as an alternative pathway Comal Bridge. Planning on aspects of traffic using a design life of 20 years with the growth of the vehicle based on a linear regression of 642 veh / year and using two scenarios, there are normal conditions (2 Comal Bridge function) and incidental conditions (only 1 Comal Bridge functioning). Initial planning, the alternative pathway using a type 2/2 UD. In normal conditions, the distribution of traffic flow 70% for Comal Bridge and 30% for Juwet Bridge produce a degree of saturation (DS) under 0.75 over the life of the plan. In the incidental conditions, the distribution of traffic flow 60% for Comal Bridge and 40% for Juwet Bridge, DS value is 0.81. Assuming then use 2/2 type UD with 8 meters wide still used. New Juwet Bridge continue to use steel as the structure and the upper structure of reinforced concrete for the structure underneath. Planned implementation within 8 months at a cost of Rp. 36.4 billion. In this final project scope of the planned bridge elements include work for the overall structure of the bridge and approach bridge. Given this new Juwet Bridge when congestion occurs on the Pantura line around Comal Bridge, the bridge is able to be an alternative pathway in servicing and reducing the burden of most of the traffic flow on the Pantura line.
KAJIAN STRUKTUR PENGAMAN PANTAI SIGANDU, BATANG Sidiq Leonanda Widhianto; Dicki Kharisma; Suharyanto Suharyanto; Siti Hardiyati
Jurnal Karya Teknik Sipil Volume 3, Nomor 4, Tahun 2014
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Generally, the problems that occur in Sigandu Beach - Batang is abrasion, resulting in damage to the beach. This has an impact on the coastal areas along the coast of Sigandu, among others land that has been covered with sea water exceeds 2 m within 5 months, trees and houses around the beach collapsed due to erosion beach by sea water. The information and supporting data are collected from several literatures, interview, laboratory research, and a collection of documents from several institutions, including the Department of Marine and Fishery of Batang, BPDP and BPPT of Yogyakarta in 2013, BMKG Climatology Station in Semarang, Soil Mechanics Laboratory of Diponegoro University and several other institutions. The dominant wind direction effect used in the calculations come from the Northwest and North. Wave height representative used a H33% at 2,94 m and a representative period T33% 8,82 seconds. Sea level caused of tide by the calculation of admiralty generating value HWL =+0.49 m; MSL = ± 0.00 m; LWL = -0.49 m. The tide of Sigandu Beach included in mixed tide prevailing semidiurnal. In the calculation, the wave breaking occurs at a depth of 4.22 m at a distance of ± 787.09 meters from the shoreline. Based on studies of the selection safety structure from some aspects of the Sigandu Beach, the elected lower threshold breakwater structure (Pegar) Geotube. Because a bad soil conditions in Sigandu Beach, then there needs to be retaining structures on Geotube is by giving it a pile of bamboo and bamboo mattresses that had been assembled under the structure of Geotube. Geotube structure is composed of Giant Sand Bag with dimension length 20 m, width 2 m and 1,5 m high with a weight of 6 tons/m' and Sand Bag with dimension length 2,2 m, width 1,4 m, and height 0,4 m with a weight of 1,12 tons/m'. To be expected to form the salient, the structure compiled in series with spacing distance of 10 m with a 100 m length of the building and placed 75 m from the shoreline.
ANALISIS STABILITAS LERENG DAN ALTERNATIF PENANGANANNYA (STUDI KASUS LONGSORAN JALAN ALTERNATIF TAWANGMANGU STA 3+150 – STA 3+200, KARANGANYAR) Rahmawan Bagus Pratama; Imam Muslih Muhibbi; Indrastono Dwi Atmanto; Siti Hardiyati
Jurnal Karya Teknik Sipil Volume 3, Nomor 3, Tahun 2014
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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This final project provides soil stability and the handling on alternative roads between Tawangmangu-Plaosan STA 3+150-STA 3+200, Karanganyar. The landscape in this area is rather steep and unstable, making the soil here has a high potential landslides. Based on the results of the drill testing which has done manually in this area, the soil contains gravelly-silt, sandly-silt and silt-stone. The analysis was done with Fellenius method and Plaxis v.8.2. Based on Fellenius method calculation, the safety factor value of the slope is 1,4701, while with Plaxis software, the safety factor value is 1,3476. Those values above are less than minimal safety requirement value of slope  which is 1,5, so this landscape has a great potential of landslide. There are two alternative suggestions to handle this situation. The first one is adding 10 meters of Bored Piles into Counterfort wall. The other method is using 11 meters of Bored Piles. The choosen method for this project was using 11 meters of Bored piles. Bored Piles was choosen because it need lesser concrete volumes than Counterfort wall. Those bored piles has diameters of 0,8 meters. It was placed at the +1191,50 above the ground and 16 meters from the centerline. The results show that this alternative increase the value of safety factor up to 1,6383.
PERENCANAAN ALTERNATIF DESAIN JEMBATAN JURANG GEMPAL KABUPATEN WONOGIRI Rafika Sari Dewi; Rini Pratiwi Annur; Moga Narayudha; Siti Hardiyati
Jurnal Karya Teknik Sipil Volume 5, Nomor 1, Tahun 2016
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

Pokoh and Jurang Gempal bridge are the bridges that are located on Wonogiri – Ngadirojo roads crossing over Bengawan Solo river connecting Wonogiri Regency and Ponorogo Regency/Pacitan Regency. But in the past 10 years, only one bridge operates and that is Pokoh Bridge. This is caused by the condition of Jurang Gempal Bridge that is no longer adequate since it was built in the colonial era, some parts of the construction aren’t function properly. With only one bridge that is operating, it oftenly lead to a high traffic density on traffic hours. Thus, the re-operating of Jurang Gempal Bridge can be the solution of this traffic density problem that occurred. However, there is a need to do a total change on the bridge construction by seeing the existing condition and the age of the bridge that is already too old. Jurang Gempal Bridge was planned to be located in the existing location that is 2x60 meter in bridge length. The upper structure of this bridge is using steel frame that is 9.0 meter in width (2x3.5 meter vehicle floor and 2x1.0 meter sidewalk) and 6.0 meter in height. Meanwhile, the sub-structure of this bridge is using an abutment that the height is 7.0 meter and a pier that is 9.0 meter in height. The hard soil that is positioned in 10 meter depth is the kind of a sand soil so the Bored Pile is used as the foundation of this Jurang Gempal Bridge.
PERENCANAAN REHABILITASI KOLAM DETENSI MELATI JAKARTA PUSAT Undayani Cita Sari; Evi Mariana; Suseno Darsono; Siti Hardiyati
Jurnal Karya Teknik Sipil Volume 3, Nomor 4, Tahun 2014
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

ABSTRACTDrainage system with polder and pump is the most effective and efficient system for handling the floods that was occurred in the area which has a slooping topography such as Jakarta. As the state’s capital and metropolitan city, Jakarta has been developing rapidly, which made the existing green land as water infiltration area and settlement become unbalanced. This is a  major cause of flooding in Jakarta. From the result of rainfall data processing in Kemayoran station, rainfall intensity can be analyzed by using Jakarta’s hyetograph diagram approach for Ciliwung’s watershed based on analysis that was conducted by Netherland Engineering Consultant. Qplan is obtained by modeling it with additional program, the SWMM 5.0 for a period of 100 years, due to Jakarta as a business and government center. Large catchment area and downtown are the reason that SWMM 5.0 is suitable to use for modeling. Thus Qplan is obtained in the amount of 11 m3. Reservoir’s volume in the amount of 75888 m3 is obtained by using Qplan, at the existing condition detention pond area is 49000 m2, so depth of pond is 5 m with 8 pumps and 4 m3/sec capacity is obtained.
PERENCANAAN PENINGKATAN JALAN TEMBUS JL. AMBARAWA- JL. SOEKARNO HATTA, BAWEN, SEMARANG Aprilia Fitri Nuryati Ningrum; Karib Wicaksono; Moga Narayudha; Siti Hardiyati
Jurnal Karya Teknik Sipil Volume 4, Nomor 1, Tahun 2015
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Highway with it’s accessories are a mode of land transport infrastructure wich are essential to the flow of services and commodity that pass through the land. With the flow of commodity and services, it will affect the economic and social development around the existing road infrastructure. Semarang has a strategic location in the development of the Province of Central Java, because Semarang crossed by important lines that connect to the regional growth centers such as Semarang, Surakarta, and Yogyakarta and it’s location close to the capital city of Central Java Province, wich is the center of economic activity, governance, social and cultural areas in Central Java. However, various problems of traffic jam occurs in the area of Semarang, this requiring an improvement road planning that will be an alternative way into the city of Semarang. Passageway of Jl. Ambarawa- Jl. Soekarno Hatta located between Ambarawa and Bawen with land use as residential areas, schools, fields, and forests. The main problem that occurred in this passageway are a pretty damage road caused by overload traffic flow and also because of pavement over time factor and because of the road capacity doesn’t required yet to accommodate the current traffic load. The purpose and goal of this evaluation and improvement are to maximize road function as an alternative way, in the end it’ll support a movement that can achieve economic growth of the area as well as reduce the problem, with a longer design time. The results of evaluation for the existing roads are gives several factors to improvement road. Due to the improvement and widening of road, it is automaticaly should redesign the geometry. The entire analysis and engineering calculations are based on the Highways Regulations and Indonesian National Standard. The results of improvement design it is carried one step of planning to widen this road in 2016, for a Rengas-Bawen segment, Gembol-Doplang segment and Harjosari-Doplang segment now widened into 7 m, for Rengas – Bawen segment before was 5 m of lane, and was 3 m for Gembol-Doplang and Doplang-Harjosari, three of them are design with 2/2 undevided lane, with new shoulder width 1 m. Design pavement used flexible ones and for the existing pavement need overlay with thick layer of 7 cm using Laston MS 454. For widening used surface course with thick layer of 10 cm using Laston MS 454, for base course using a class A crushed stone with a thickness of 20 cm CBR 100% and the subbase course using class B gravel CBR 50% with thick layer of 12 cm and lied on subgrade form browny red silty clay with sand in CBR 6%. Hope that this evaluation and improvement design can provide comfort services to road users during the specified design time of 10 years with a plan of speed 50 km / hour and a maximum slope of 9%.
Co-Authors Andhy Satriya Wardhana Aprilia Fitri Nuryati Ningrum Dicki Kharisma Evi Mariana Imam Muslih Muhibbi Indrastono Dwi Atmanto Karib Wicaksono Moga Narayudha Mohamad Irzam Hasani Rafika Sari Dewi Rahmawan Bagus Pratama Rini Pratiwi Annur Sidiq Leonanda Widhianto Suharyanto Suharyanto Suseno Darsono Undayani Cita Sari