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Analisis Struktur Perbandingan Penggunaan Bekisting Konvensional dengan Bekisting Pelat Baja pada Kolom Kotak dan Kolom Bulat (Studi Kasus Pembangunan Cibinong City Mall 2) Azmarningrum, Elok Cantika; Azhar, Moh; Bangun, Sempurna
Jurnal Komposit: Jurnal Ilmu-ilmu Teknik Sipil Vol. 8 No. 1 (2024)
Publisher : Universitas Ibn Khaldun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/komposit.v8i1.14890

Dengan berkembangnya teknologi didalam dunia konstruksi khususnya di negara Indonesia semakin banyaknya inovasi yang digunakan dalam proses konstruksi. Salah satu nya yaitu dalam penggunaan cetakan beton (bekisting). Bekisting harus memenuhi syarat kekuatan, kekakuan, dan stabilitas. Syarat ini harus dipenuhi karena penggunaan bekisting digunakan secara berulang-ulang pada gedung bertingkat dan memerlukan biaya yang besar untuk menggunakannya. Posisi pemasangan bekisting harus berdiri tegak, kokoh dan kuat agar mampu menahan beban-beban yang terjadi seperti beban vertikal dan beban horizontal. Pemasangan bekisting kolom dapat dikerjakan setelah pemasangan tulangan kolom telah siap. Kolom adalah salah satu elemen struktur vertikal yang berfungsi meneruskan beban aksial lalu diteruskan ke pondasi. Pengerjaan tulangan kolom harus memerhatikan dimensi tulangan, jumlah tulangan utama dan tulangan sengkang, serta jarak antar tulangan utama dan tulangan sengkang. Tujuan dari penelitian ini adalah untuk mengetahui perbandingan pemasangan tulangan kolom kotak dan kolom bulat, mengetahui perbandingan penggunaan bekisting jenis konvensional dan bekisting jenis pelat baja serta mengetahui beban yang dipikul oleh kedua bekisting tersebut saat pengecoran. Metode yang digunakan dalam penelitian ini adalah deskriptif studi kasus. Pengumpulan data primer dilakukan dengan pengamatan secara langsung, wawancara kepada staff lalu menganalisis data. Sedangkan pengumpulan data sekunder diambil dari buku literatur, jurnal, dan internet. Hasil penelitian menunjukkan bahwa beban hidup merata yang didukung oleh tulangan kolom dimensi 80x80 lebih besar dibandingkan dengan tulangan kolom dimensi 60x60. Mu = 6.273.10-5 t.m 3.287.10-5 t.m. Sedangkan penggunaan bekisting jenis pelat baja lebih baik dari segi penggunaan, waktu dan biaya dibandingkan dengan penggunaan bekisting jenis konvensional serta untuk beban mati dan kombinasi beban yang dipikul oleh bekisting jenis pelat baja lebih besar dibandingkan dengan bekisting jenis konvensional sehingga bekisting jenis pelat baja lebih kuat memikul beban yang terjadi saat pengecoran.

RELATIONSHIP BETWEEN 35 MEGAPASCAL COMPRESSIVE STRENGTH AND FLEXURAL STRENGTH Permana, Oki; Naibaho, Pio Ranap Tua; Bangun, Sempurna
International Journal of Civil Engineering and Infrastructure Vol 3, No 2 (2023): IJCEI Volume 3 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.3.2.59-68

In the modern era like now in the construction sector, there are so many innovations in infrastructure along with the times. Concrete is an important factor in the construction sector with a function as one of the formers of the upper and lower structures. Concrete material is the result of a mixture of cement, coarse aggregate, fine aggregate, water and sometimes added materials with various kinds of innovations. The method used in this study is experimental, by making the test specimen laboratory samples by using two different specimens but with the same quality of concrete is fc'35 MPa. Based on the results of the values on the flexural and compressive test specimens in the laboratory, an unsuitable relationship between flexural strength (has been obtained fs) and compressive strength (fc ') according to SNI 2847: 2013. On formulas (fr = 0.62 √fc′) applis to the concrete test 28 day.

ANALYSIS OF STRENGTH OF LIFT FRAME STRUCTURE ON LIFT LOAD WEIGHT OF 320 KG AND LIFT LOAD WEIGHT OF 450 KG USING ETABS SOFTWARE (CASE STUDY: PONDOK INDAH TOWNHOUSE PROJECT) Tuheteru, Kadir; Azhar, Moh; Bangun, Sempurna; Naibaho, Pio Ranap Tua
International Journal of Civil Engineering and Infrastructure Vol 4, No 1 (2024): IJCEI Volume 4 No. 1
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.4.1.30-44

The lift frame is a system that provides physical support to the lift. The steel material used is hot rolled steel (WF and H-Beam). In this research, to prevent damage due to earthquakes, it is necessary to carry out earthquake analysis including structural irregularities, intersections between levels, and increased forces due to irregularities following SNI 1726-2019. This research aims to determine the specifications of an elevator frame that can withstand a load of 320 kg and analyze the axial force, moment, and shear in the elevator structure using ETABS Software. Apart from that, to find out the results of the strength of the lift frame on a floor building if a load force of 450 kg is applied. The results obtained in this research are as follows, the weight of the lift load of 320 kg working on the 200x100x5.5x8 WF support beam is 1726.6 kg, and the weight of The lift load of 450 Kg working on the 200x100x5.5x8 WF Support Beam of 1925 Kg. In earthquake load analysis in the South Jakarta area, deformation in building structures was 3,064 mm in the X direction and 1,722 mm in the Y direction, so the elevator frame structure is safe.

EFFECT OF THE USE OF WOOD CHARCOAL ASH ON THE COMPRESSIVE STRENGTH OF NORMAL CONCRETE William, Martin Richardo; Sembiring, Kristina; Bangun, Sempurna; Naibaho, Pio Ranap Tua
International Journal of Civil Engineering and Infrastructure Vol 3, No 2 (2023): IJCEI Volume 3 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.3.2.32-39

Wood charcoal ash is the result of chemical changes from the burning of wood. Wood charcoal contains silica which is a good binder aggregate for concrete mixtures, it is the same as the function of cement in a concrete mixture. Wood charcoal can also be used as a mixture or addition to the manufacture of reactive concrete. Concrete is a mixture of portland cement, fine aggregate, coarse aggregate and water, with or without additives that form a solid mass. Concrete is prepared from coarse aggregate and fine aggregate. Cement and water interact chemically to bind the aggregate particles into a solid mass (George Winter, 1993). Based on the results of research that has been done, the results obtained on normal concrete of 17.98 Mpa at the age of 7 days and increased at the age of 14 days of 20.73 Mpa, and 28 days of 22.94 Mpa. At the time of normal concrete mixed with wood charcoal ash 3% compressive strength of concrete again increased by 20.43 Mpa at the age of 7 days, but at the age of 14 days of concrete with a mixture of wood charcoal ash increased by 20.82 Mpa and again increased at the age of 28 days by 27.07 Mpa. The decrease continued to occur in concrete with a mixture of wood charcoal ash 8% and 13% at the age of 7 Days, 14 days, and 28 days, the increase in the compressive strength of the optimal concrete is in the concrete mixture of wood charcoal ash 3% at the age of 28 days.

TIME AND COST MANAGEMENT ANALYSIS OF THE FORMWORK AND REINFORCEMENT WORK (COLUMNS, BEAMS, AND SLABS) FOR THE 2ND FLOOR AMENITIES IN THE OFFICE BUILDING DEVELOPMENT PROJECT OF THE KNOWLEDGE HUB BSD CITY Nosi, Leonardus; Bangun, Sempurna; Sembiring, Kristina; Naibaho, Pio Ranap Tua
International Journal of Civil Engineering and Infrastructure Vol 4, No 2 (2024): IJCEI Volume 4 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.4.2.23-36

A project is a business activity that is complex, non-routine in nature, has limited time, budget and resources and has its own specifications for the product to be produced. With the existence of several limitations in working on a project, an organization in the project is needed to manage the resources (equipment, budget, and workforce) owned so that they can carry out synchronous activities so that the project objectives can be achieved. In construction projects every building material uses concrete material, which in practice, especially in the last 10-20 years, concrete has been increasingly used. To obtain the planned concrete shape and to harden it, we need formwork or moulds. The Knowledge Hub BSD City office building project is built on an area of 1.1 hectares covering a building area of 54,956 m2 consisting of 11 floors. This location is located on Jalan Raya BSD Barat, Sampora, Cisauk District, Tangerang Regency, Banten Province. The research objective for the analysis of these calculations starts from calculating the duration of each job based on cost and time calculations obtained from existing technical drawing data. The research method used is the calculation of formwork (columns, beams and slabs) through the Microsoft Excel application.

ANALYSIS OF THE RELATIONSHIP BETWEEN COMPRESSIVE STRENGTH AND BENDING STRENGTH OF CONCRETE WITH FC 30 MEGAPASCAL (MPA) Budiarto, Rika; Azhar, Moh; Bangun, Sempurna; Naibaho, Pio Ranap Tua
International Journal of Civil Engineering and Infrastructure Vol 4, No 2 (2024): IJCEI Volume 4 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.4.2.73-81

With the rapid development in the field of construction, various material innovations are increasingly emerging, especially in concrete. Concrete is in high demand for its durability, resistance to pressure, and low maintenance costs. Made from a growing mix of cement, coarse aggregate (split), fine aggregate (sand), water, and additives, concrete is becoming a top choice in modern infrastructure. This study aims to explore the relationship between compressive strength and flexural strength in 30 MPa quality concrete. The method used was a laboratory experiment with cylindrical and block-shaped test pieces, which were tested at the ages of 7, 14, and 28 days. The main materials used include coarse and fine aggregates, water, fly ash, and Portland type I cement. The study measured the compressive strength values of concreate, and evaluated the formula \(fs=0.62√(fc^' ) \) as stated in SNI 2847:2013 to test its relevance to this quality concrete. The results showed that the flexural strength increased with the age of the concrete, with the largest difference between compressive strength and flexural strength at 1.3%. These findings support a deeper understanding of the performance of concrete at a given age and the relevance of the standard formula for 30 MPa quality concrete.

ANALYSIS OF COST AND TIME CONTROL ON THE LIBRARY CONSTRUCTION PROJECT OF THE POLICE TRAINING INSTITUTE USING THE EARNED VALUE Xena S P, Canda; Bangun, Sempurna; Dewita, Hikma; Naibaho, Pio Ranap Tua
International Journal of Civil Engineering and Infrastructure Vol 4, No 2 (2024): IJCEI Volume 4 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.4.2.1-12

In a construction project, the factors that become indicators of the success of a project are that it must be cost, time and quality that can be achieved by planning, scheduling, and controlling its implementation properly. The method used to analyze data regarding cost control and project implementation time so that it can be effective and efficient is to use the concept of the value of the results (Earned Value Concept). From the data that has been obtained, the next step is to calculate the work weight for each item. Then an analysis of cost and time control is carried out using several approaches, namely: BCWS, BCWP and ACWP. The results of project data processing use the analysis calculation of the result value method. From the calculation of the Schadule Variance (SV) the work accelerates 1 week from the predetermined schedule. the total schedule/schedule 17 weeks of work and the results of the calculation on the 17th week is 2,710,716.28. Showing a positive number, this indicates that the implementation of the work is faster than the planned schedule. From the results of the calculation of Cost Variance (CV) the work has accelerated by 1 week from the predetermined schedule. week 17 is 2,011,321,591.90. Showing a positive number, this indicates that the cost to complete the project is less than the planned cost. The calculation result of the Schedule Performance Index (SPI) that the work has accelerated 1 week from the predetermined schedule. In week 1 to week 17 of 1.00, it shows that the project was carried out on time. The results of the calculation of the Cost Performance Index (CPI) of work accelerated by 1 week from the predetermined schedule. In the 1st week to the 17th week of 1.00 indicates that the work in the field costs in accordance with the planned budget

DOMESTIC WASTEWATER PLANNING STRATEGY WITH THE COMMUNAL SEPTIC TANK METHOD (TANJUNG PRIOK, NORTH JAKARTA) Romy Setiawan, Irvan; Sembiring, Kristiana; Bangun, Sempurna; Naibaho, Pio Ranap Tua
International Journal of Civil Engineering and Infrastructure Vol. 5 No. 1 (2025): IJCEI Volume 5 No. 1
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

A Communal Septic Tank is a domestic waste treatment system commonly used in densely populated areas, both in urban and rural areas. This system functions to process waste from households and commercial buildings to make it safer for the environment and human health. This research was conducted in the densely populated Sunter Agung settlement, Tanjung Priok, North Jakarta, with an area of 4.62 km², as a trial of domestic waste treatment to reduce environmental pollution and its impact on health. The process begins with community outreach, area observation, and preparation of technical documents such as working drawings and Budget Plans (RAB). Planning follows the provisions of SNI 2398:2022. The results of the data study showed that there were 85 families and 413 people. So that the need for a septic tank with a volume size of 16,000 liters / 16 cubic meters with a total of 7 tank units, each tank is equipped with 8 water absorption fields. The total budget that will be needed is IDR 991,000,000. The community will be given training in using the tank. The benefits of using communal septic tanks include improving groundwater quality, soil fertility, and preventing diseases, such as stunting. Keywords: Communal septic tanks, Domestic waste treatment, Environmental sanitation, Densely populated settlements.

RELATIONSHIP BETWEEN COMPRESSIVE STRENGTH AND FLEXURAL STRENGTH IN REACTIVE POWDER CONCRETE Girsang, Pije Saputra; Naibaho, Pio Ranap Tua; Bangun, Sempurna
INDONESIAN JOURNAL OF CONSTRUCTION ENGINEERING AND SUSTAINABLE DEVELOPMENT (CESD) Vol 6 No 2 (2023): INDONESIAN JOURNAL OF CONSTRUCTION ENGINEERING AND SUSTAINABLE DEVELOPMENT (CESD)
Publisher : Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/cesd.v6i2.18896

Reactive powdered concrete is a new type of concrete which has ultra high compressive strength. The constituent components are very fine powders which have a high silica content. This aims to improve the reaction that occurs in concrete and increase the homogeneity of the concrete. Reactive powder concrete consists of cement, silica fume, quartz with a maximum diameter of 300 μm, superplasticizer and steel fiber to increase ductility. Reactive powder concrete which has high compressive strength and high ductility has the potential to replace steel materials in construction work. Has a very big opportunity for construction materials in Indonesia considering the availability of the materials needed, especially quartz. This research is the first step towards the possibility of developing reactive powdered concrete in Indonesia, which is based on previous research. Experiments were carried out to obtain a reactive powdered concrete mixture with local materials. This experimental behavior serves to connect the compressive strength and bending with the formula 0.62fc '. The results showed that the compressive strength was 32.85 MPa and the flexural strength 3.25 MPa and the compressive strength produced by the reactive powder concrete was of medium quality concrete, this was due to differences in the composition and characteristics of the superplasticizer, silica fume, cement, or sika fiber used

ANALISIS KAPASITAS PROFIL GELAGAR MEMANJANG DAN GELAGAR MELINTANG TERHADAP GAYA-GAYA DALAM JEMBATAN RANGKA BAJA TIPE WARREN DENGAN MENGGUNAKAN SOFTWARE MIDAS CIVIL 2019 (Studi Kasus : Jembatan Penghubung Gedung RSCM Kencana – Gedung RSCM Kirana) Arif, Muhammad Andi; Azhar, Moh.; Bangun, Sempurna; Naibaho, Pio Ranap Tua
Jurnal Ilmiah Global Education Vol. 4 No. 4 (2023): JURNAL ILMIAH GLOBAL EDUCATION, Volume 4 Nomor 4, Desember 2023
Publisher : LPPM Institut Pendidikan Nusantara Global

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55681/jige.v4i4.1164

There are two access bridges that have different functions and to cross the Ciliwung river below as an access road from the RSCM Kencana building to RSCM Kirana. Where there is access to the bridge that is specifically for car/motorcycle riders and a special bridge for pedestrians. However, the density of motorists and pedestrians can hinder traffic access. Thus, supporting infrastructure was built, namely a vehicle bridge and connecting pedestrians from the Kencana RSCM building to the Kirana RSCM building. The type of bridge built is a concrete slab steel frame bridge. In this regard, this study aims to determine the values of the ultimate moment, shear, and axial forces that occur with the object viewed from the longitudinal and transverse girders whether they exceed the nominal profile value or not, and the deflections that occur on the behavior of the structure. on the bridge according to SNI 1725:2016 loading with the help of the MIDAS Civil 2019 software. From the results of the calculation and capital analysis on the MIDAS Civil 2019 software, the values of the internal forces on the object under review do not exceed the nominal strength value of the profile. First, the girder extends against ultimate moment of ϕMn ≥ Mu = 3.762,080 kNm ≥ 528,869 kNm, against shear force ϕVn ≥ Vu = 1.095,444 kN ≥ 909,282 kN, against axial compressive force ϕPn ≥ Pu = 8.532,876 k N ≥ 3.115,265 kN, to the axial tensile force ϕPn ≥ Pu 7.726,842 kN ≥ 2.434,744 kN. Second, the transverse girder with respect to the ultimate moment of ϕMn ≥ Mu = 1.242,046 kNm ≥ 53,723 kNm, against the shear force ϕVn ≥ Vu = 1.076,400 kN ≥ 81,513 kN, against the axial compressive force ϕPn ≥ Pu = 3.805,349 kN ≥ 255,812 kN. The deflection value that occurs at the ultimate state of the structural behavior of the bridge is 48.70 mm where this value is still smaller than the allowable deflection of 55 mm. So it can be concluded that the bridge structure is safe when it receives the ultimate load.

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