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INDONESIA
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR
Published by Universitas Tadulako
ISSN : 20886004     EISSN : -     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Arjuna Subject : -
Articles 7 Documents
 1 
Search results for , issue "Vol 4, No 2 (2014)" : 7 Documents clear
PENGARUH LUBANG DAN EKSENTRISITAS TERHADAP KUAT TEKAN BETON Agustiar, Agustiar
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 2 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (236.574 KB)

Abstract

The use of hollow concrete in buildings is allowed. It is accordingly to SNI 03-2847-2002, which mentioned that pipeline with its holes that are embedded in column should not occupy more than 4% of cross-section area of the column. The use of holes in the column is used for plumbing or electrical installations. Reduction of cross-sectional area of concrete causes the concrete strength to bear axial load will also be reduced. Besides that, in the installation of pipes in a column, they could be in inclined position, which could result in an eccentricity to the gravity centre of column.  Based on the problem, this research aims to find out the effect of eccentricity on the concrete column with hole to its strength in supporting axial load.  There were 56 cylindrical specimens with 15 cm of diameter and 30 cm of high used in this research. The results showed that the hole in concrete resulted in reducing of the compressive strength of concrete. The reducing in strength is expected to be due to reducing in cross-section area of concrete. The use of holes up to 3.8% of the concrete cross-section area results in reducing the strength of concrete up to 16.86% (BN2) of the strength of concrete without holes. The reduction in strength due to the holes eccentricity of 2 and 3 cm to the eccentricity of concrete, were 24.64 and 25.36% respectively to the concrete strength without hole. Then the strength of concrete at 3.8% aperture area still meets the requirements. Based on that also why the hole bounded by SNI 03-2847-2002, pasal 8.3 (4) can still be used by 4%. Keywords: concrete, eccentricity, hole, compressive strength.
DESAIN FONDASI TELAPAK DENGAN MENGGUNAKAN BETON STYROFOAM RINGAN PADA TANAH LEMPUNG BERPASIR Irdhiani, Irdhiani; Ramadhani, Sriyati
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 2 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Recently, the price of construction material has gone up especially price of cement as the primary material for foundation construction. In the area which is consist of soft soil with higher water level, a higher foundation section area such as plate foundation or pile foundation is needed. It will be costly when pile foundation or plate foundation utilized in lightweight building. Therefore, lightweight concrete foundation might be useful as an alternative to reduce cement volume in concrete material which will reduce the cost of foundation construction. The research aims to determine the optimum percentage of lightweight Styrofoam concrete in plate foundation against bearing capacity, settlement, and uplift force in sandy clay.  Foundation were made of concrete mixed with Styrofoam with contents varied as 0%, 20%, 40%, 60% 80%  and 100%, then its pressure strength and volume weight at 28 days cure were tested. From physical properties tests such as sieve analysis and Atterberg limit test, the soil classified as CL or anorganic clay with low to medium plasticity, sandy clay with A(activity) of 0.87 which means it has illite clay mineral content in the soil with activity (A) medium.  Direct shear test shows that the soil have a friction angle (f) 24,25° and cohesion (c) 0,0197 kg/cm.  Concrete unit weight containing no Styrofoam is 2,222 gr/cm3. Average concrete unit weight will be reduced as 0,2726 gr/cm or 12% for each addition of 20% of Styrofoam. The percentage of concrete pressure strength reduction by addition of Styrofoam of 10%, 20%, 30%, and 40% compare to concrete pressure strength with no Styrofoam added are 24,470%, 44,453 %, 58,601 %, and 69,145 % respectively Reduction of  concrete pressure strength are due to Styrofoam particles that may act as air void, in which concrete with air void has lower pressure strength compare to concrete without air void. Kata Kunci : Plate Foundations, Lightweight Styrofoam Concrete, Sandy Clay
KAJIAN DAMPAK PERUBAHAN PENGGUNAAN LAHAN TERHADAP DEBIT ALIRAN DAS CIUJUNG Sulaeman, Dede; Hidayat, Yayat; Rachman, Latief Mahir; Tarigan, Suria Darma
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 2 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Ciujung Watershed is considered as one of major watershed in Banten Province related to floods that take place almost every year in the area. The study aims to assess landuse change and its influence on discharge. Watershed conditions such as precipitation, discharge, peak discharge, volume rate of discharge, and runoff were analyzed in two periods: 1999-2003 and 2004-2011. Landuse changes were analyzed in 8 years period (2003-2011) as well as its influence on discharge. Average annual precipitation in the period of 1999-2003 and 2004-2011 are 2370 and 2419 mm respectively. Average annual discharge in the period of 2004-2011 increased by 15% compared to the period of 1999-2003. Watershed conditions analysis indicates that Ciujung watershed quality decreased with increasing in surface runoff coefficient with values of 0.43 (period 1999-2003) and 0.48 (period 2004-2011). The study showed that there are several decreasing landuses during period 2003-2011 such as open land, natural forest, mixed dry land farming, secondary dry forest, primary dry forest, and dry land farming by 47.4; 14.3; 8.4; 2.9; 1.6 and 0.1% respectively. Several increasing land uses during the period including bush, plantations, settlements, and paddy field by 1,974.5; 5.5; 3.8 and 0.9% respectively. Keywords: discharge, land use change, peak discharge, runoff Ciujung Watershed is considered as one of major watershed in Banten Province related to floods that take place almost every year in the area. The study aims to assess landuse change and its influence on discharge. Watershed conditions such as precipitation, discharge, peak discharge, volume rate of discharge, and runoff were analyzed in two periods: 1999-2003 and 2004-2011. Landuse changes were analyzed in 8 years period (2003-2011) as well as its influence on discharge. Average annual precipitation in the period of 1999-2003 and 2004-2011 are 2370 and 2419 mm respectively. Average annual discharge in the period of 2004-2011 increased by 15% compared to the period of 1999-2003. Watershed conditions analysis indicates that Ciujung watershed quality decreased with increasing in surface runoff coefficient with values of 0.43 (period 1999-2003) and 0.48 (period 2004-2011). The study showed that there are several decreasing landuses during period 2003-2011 such as open land, natural forest, mixed dry land farming, secondary dry forest, primary dry forest, and dry land farming by 47.4; 14.3; 8.4; 2.9; 1.6 and 0.1% respectively. Several increasing land uses during the period including bush, plantations, settlements, and paddy field by 1,974.5; 5.5; 3.8 and 0.9% respectively. Keywords: discharge, land use change, peak discharge, runoff
PEMANFAATAN CAMPURAN MORTAR DAN PARTIKEL KAYU SEBAGAI ELEMEN INTI BALOK BETON KOMPOSIT Maricar, Shyama; Nirmalawati, Nirmalawati; Rivani, Agus
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 2 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Lightweight concrete has ability to increase workability and reduce structure load such as gravity and earthquake loads. Therefore lightweight and adequately rigid structural system is required.  Based on efficiency of material application and adaptation optimization to the stress distribution system, composite system become one alternative that can be utilize, especially on beam structure. In this case, collaboration between lightweight concrete and ordinary concrete will be the deciding factor to achieve the objectives mentioned above. To construct lightweight concrete, timber particles obtained from sawmill industrial waste with density of 0,35 – 0.65 gr/cm3 will be highly possibly to utilize. This research aims to obtain the composition of concrete and timber particles mix that its strength can be measured in order to get effective composite concrete beam. A number of tests to the mix of concrete and timber particles were conducted to find out its pressure strength, tensile strength and elasticity, in order to get the percentage of timber particles used in concrete that will be used to create composite concrete with ordinary concrete. Sawmill and furniture industrial waste in form of timber particles can be utilized as material to create lightweight concrete which was limited only to nonstructural element. Keyword  : Normal/Ordinary concrete,mortar concrete ,coconut timber particles
PEMODELAN BANGKITAN PERGERAKAN PADA PERUMAHAN CITRA PESONA INDAH DAN PERUMAHAN METRO PALU REGENCY DI KOTA PALU Rahman, Rahmatang
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 2 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Construction of residential area in Palu city increases along with the city development and population growth. It can raise or enlarge the trip generation both for medium residential (subsidized residential) and for middle to upper residential (the elite residential) and also affect the use of land as well as increased traffic. The purpose of this thesis is to determine the factors of affect trip generation and make the trip generation models at residential of Citra Pesona Indah and Metro Palu Regency. This research was conducted by studying literature that can support this research, gathering data using sampling techniques (stratified random sampling) with the formula of Slovin, conducting interviews and questionnaires to the respondents, analyzing the data results of the interview to describe the characteristics of the residence occupants and analyzing with the categories that will result in trip generation number on the residential area.  The number of trip generation obtained by conducting interviews through questionnaires was 1665 movements / day for Citra Pesona Indah and 222 movements / day for Metro Palu Regency. The number of trip generation resulted using category analysis method is 1669.4 movement / day for Citra Pesona Indah and 222.4 movements / day for Metro Palu RegencyKeywords : Trip generation, category analysis, sampling techniques
KAJIAN PENGARUH JUMLAH DAN LEBAR PERKUATAN GEOTEKSTIL TERHADAP DAYA DUKUNG TANAH GAMBUT Martini Martini; Fathuddin Al-Anshori
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 2 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Peat soils have a high compressibily and low bearing capacity. These unfavorable characteristics can cause differential settlement and the construction failure, so that the appropriate improvement methods are required to solve the problems. Peat soil improvement methods that commonly used are mechanical and chemical improvement methods. In this research, the peat soil reinforced with geotextile was conducted in order to find the influence of the reinforcement in increasing the bearing capacity. Reinforcement was applied to the construction model with variation in the number of reinforcement which were N=1, N=2, N=3, and reinforcement width which were 2B, 3B and 4B (B is foundation width in scale). The results show that the insertion of geotextile sheets in peat soil can increase the bearing capacity of the soil foundation. The increasing of the bearing capacity is proportional to the increasing of the number and width of the geotextile. Variation in reinforcement width is given more influence in increasing the ultimate bearing capacity (q) compare to variation in the number of reinforcement. Compare to the modeled construction without reinforcement, the maximum bearing capacity increase as much as 232.3 % and BCR as of 3.32 with reinforcement width of 4B and N=3.Key words: peat, reinforcement, bearing capacity
PENUAAN DINI DAN DURABILITAS PERKERASAN LAPIS TIPIS BETON ASPAL LAPIS AUS (HRS-WC) YANG MENGGUNAKAN ROADCEL-50 Mashuri, Mashuri; Astuti, Fira; Batti, Joy Fredi
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 2 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

RoadCel-50 is an added material that has been used in asphalt pavement such as HRS. Its purpose is to improve the stability of the asphalt pavement. However, the effect of the use RoadCel-50 on short term aging and durability of asphalt pavement is very important to understand. The objective of this study was to determine the effect of RoadCel-50 on short term aging and durability of the pavement Hot Rolled Sheet Wearing Course (HRS-WC). This research was conducted with the percentage of the RoadCel-50 are 0%, 0.1%, 0.2%, 0.3% and 0.4%. This research was done at the Laboratory of Transportation and Highways Department of Civil Engineering Faculty of Engineering, Tadulako University, Palu Central Sulawesi. The main equipment used in this study is Marshall testing machines. Manufacturing and testing of samples were conducted at STOA conditions. The results of this study on the the condition of short term aging (STOA) shows that the use of RoadCel-50 can increase the stability of the pavement on the the percentage RoadCel-50 of 0.30% and Asphalt content of 7.7% which is 2281.40 kg.  Stability in the condition STOA declined in the percentage RoadCel-50 of 0.40% and Asphalt content of 7.5% at 1178.87 kg. Applying RoadCel-50 on the HRS-WC can improve durability on the percentage RoadCel-50: 0.10% with 7.5% bitumen content. Keywords: Roadcel-50, Short term aging, HRS-WC, STOA.

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