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Achmad Pahrul Rodji
Universitas Krisnadwipayana
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ANALISIS TEBAL PERKERASAN LENTUR PADA APRON PANGKALAN UDARA SAUMLAKI DI TANIMBAR MALUKU Muhammad Fahmi Tri Susilo; Achmad Pahrul Rodji; Lydia Darmiyanti
Jurnal Sipil Krisna Vol 8 No 1 (2022): JURNAL SIPILKRISNA
Publisher : Fakultas Teknik Universitas Krisnadwipayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61488/sipilkrisna.v8i1.154

Abstract

Currently, Maluku Province is one of the provinces in Indonesia that is experiencing significantdevelopment. This condition affects the number of use of commercial aviation services that will enter and leaveour area both now and in the future. The air base is one of the air bases in the Tanimbar Islands, Maluku Provincewhich currently serves domestic flights. This air base uses a single runway which is the simplest configurationwith a capacity of 7-12 movements per day in VFR (Visual Flight Rules) conditions and 7-10 movements per dayin IFR (Instrument Flight Rules) conditions. The analysis of the flexible pavement thickness of the apron at theSaumlaki Air Base aims to determine the thickness of the pavement layer at the Air Base. The planning methodused is the FAA (Federal Aviation Administration) method. The first step that needs to be considered is the CBR(California Bearing Ratio) value of the subgrade, the determination of the modulus of subgrade value, theselection of the plan plane, the MTOW of the aircraft, the load of one aircraft wheel (W2), corrected departure(R2), the load of one wheel of the aircraft plan (W1 ) and equivalent annual deparatures of the planned aircraft(R1). This pavement thickness analysis uses Boeing 737-900ER and C-130 plan aircraft. Based on the dataobtained, then the plan plane MTOW value, the modulus of subgrade and R1 values are plotted on the FAA curveso that the pavement thickness is obtained, the results of this study indicate that for the plan aircraft Boeing 737-900ER and C-130 required 9.22 cm thick surface coarse and 100 cm base coarse layer with a total pavementthickness of 109.22 cm. The results with this comparison COMFAA application required a surface coarsepavement thickness of 8.4 cm and a base coarse layer of 100 cm with a total pavement thickness of 108.
PERENCANAAN GEOMETRIK JALAN TOL CIBITUNG – CILINCING INTERCHANGE TAMBELANG KABUPATEN BEKASI Achmad Pahrul Rodji; Sahat Martua Sihombing; Qawi Ayadillah Hariyanto
Jurnal Sipil Krisna Vol 8 No 1 (2022): JURNAL SIPILKRISNA
Publisher : Fakultas Teknik Universitas Krisnadwipayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61488/sipilkrisna.v8i1.158

Abstract

The regencies of Bekasi, Karawang, and Purwakarta are experiencing rapid economic growth,because they are the center of the largest industrial area in West Java. This condition causes an increase intraffic on the Jakarta-Cikampek toll road to Jakarta or vice versa so that congestion often occurs. To overcomethese problems, it is necessary to build a toll road that can break down congestion on inner city toll roads, theCibitung - Cilincing toll road is made to reduce congestion on inner city toll roads because freight cars can godirectly to the port without having to go through the inner city toll road. . The purpose of this study is to planthe geometry of the toll road, especially in the access ramp section to and from the toll road. Geometricinterchange planning methodology by following the 2001 AASHTO standard, Procedures for GeometricPlanning for Inter-City Roads no. 038/TBM/1997, Geometric Planning Standards for Urban Roads 1992. Fromthese geometric plans selected 1 ramp located at the Tambelang interchange, the geometric planning analysisincludes vertical alignment, horizontal alignment the bend types used in the design include FC, SCS bends, andfor vertical alignments are concave and convex.
ANALISIS TEBAL PERKERASAN RUNWAY PADA BANDARA INTERNASIONAL OE-CUSSE, TIMOR LESTE Sahat Martua Sihombing; Achmad Pahrul Rodji; Al Muzamil
Jurnal Sipil Krisna Vol 8 No 1 (2022): JURNAL SIPILKRISNA
Publisher : Fakultas Teknik Universitas Krisnadwipayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61488/sipilkrisna.v8i1.159

Abstract

Oecusse-Ambeno is one of the districts in Timor Leste which is being developed by the government. Oneof the developments is through the implementation of an airport project called the "New Development of OecusseInternational Airport Project" which aims to increase access to Timor Leste and as an exclusive economicdevelopment zone for Timor Leste. Over time, the level of runway pavement can decrease. Therefore, the qualityof the pavement structure must be considered so that it is able to serve the planned traffic over the coming period.The author uses the standard rules of the Federation Aviation Administration (FAA) as the basis for planning theair side of the airport. This air side planning, adjusts to passenger growth for the next 20 years. Airside geometricrequirements are runway length 2200 m with a width of 45 m. In this analysis using the auxiliary program, namelythe manual method and FAARFIELD. Based on the results of calculations using FAARFIELD software andgraphics, the type of aircraft planned for the A330-330 within the next 20 years development period is the totalpavement thickness with FAARFIELD software is 658 mm, which consists of 120 mm surface course, 343 mmBase Course, and 195 mm Subbase Course while the graphical method obtained a total pavement thickness of730 mm, consisting of 102 mm Surface Course, 480 cm Base Course, and 152 mm Subbase Course. The differencein the calculation of the FAARFIELD software by graphical method is 10% or the difference is about 72 mm, sothe results of the calculation of the graphical method are thicker than FAARFIELD.
ANALISIS PENINGKATAN DERMAGA PADA PT BERLIAN MANYAR SEJAHTERA SURABAYA Ahmad Supriyatna; Sahat Martua Sihombing; Achmad Pahrul Rodji
Jurnal Sipil Krisna Vol 8 No 1 (2022): JURNAL SIPILKRISNA
Publisher : Fakultas Teknik Universitas Krisnadwipayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61488/sipilkrisna.v8i1.160

Abstract

The fender functions as a cushion that is placed in front of the pier, so that the fender can withstand the pierstructure from impact when the ship is maneuvering to lean on the pier. Ships docked at the pier still have speedeither driven by their own engines or pulled by tugboats. To avoid damage to ships and docks due to collisions, abearing or fender is installed in front of the dock which functions to absorb the impact energy. The amount ofimpact energy caused by the ship docking to the dock can be obtained by determining the block coefficient on theship, the ship mass coefficient, the ship's eccentricity coefficient to the dock, and the ship's docking speed in aperpendicular direction. The force transmitted to the pier depends on the type of fender and the allowabledeflection of the fender. When the ship hits the fender, the fender will deflect and transmit the impact force to thepier structure. Fender planning is determined based on the energy absorbed due to ship collision. The purpose ofthis study is to find out how to calculate the size of the pier required for one ship loading and unloading at thePort of PT. Berlian Manyar Sejahtear; knowing the size and strength of the required number of fenders at thePort of PT. Berlian Manyar Sejahtera; find out the number of fenders that will be used in upgrading the PT.Berlian Manyar Sejahtera. The research stages or steps of the research methodology begin with conducting a preliminary study or literature which includes literature study and data identification. The existing length of thepier is 200 meters, it will be increased by 50 meters so that the total length of the pier is 250 meters. The resultsof the analysis using 2 examples of ships docked at the PT. Berlian Manyar Sejahtera The length of the pier neededto serve the ships that dock is 226.8 meters. In the planning of PT. Berlian Manyar Sejahtera uses 1200 SCH or1200 SPC cone type fenders with an impact energy of 0.62 tm. The results of the analysis used a 1300 SPC conetype fender with an impact energy of 0.68 tm. Cone type fenders have a "Pad" which is a protector against thefender rubber itself, so in the event of a ship collision that is stronger than planned, the protector will protect thefender rubber and the dock structure. The results of the analysis using a ship weighing 56.545 tons can be usedwith a cell fender type with dimensions OD x ID = 380 x 190 which has an absorption energy of 1.20 tm. Theforce absorbed by the fender is 16.72 tons. For type V fenders, the KVF 200 HCA type is used which has anabsorbed energy value of 1.0 tm and a forward force of 15.35 tm with a deflection of 45%. The number of fendersused for ships weighing 33,193 tons is 19.3 units and for ships weighing 56,545 tons is 20.6 units, so for a totalpier length of 250 meters, the number of fenders used is 22.7 units rounded up to 23 units.
ANALISIS KUAT TEKAN BETON MENGGUNAKAN LIMBAH BOTOL KACA SEBAGAI PENGGANTI SENAGIAN AGREGAT HALUS DAN GULA MERAH SEBAGAI BAHAN TAMBAH / ADITIF BETON Achmad Pahrul Rodji; Sahat Martua Sihombing; Novrihan Tanjung
Jurnal Sipil Krisna Vol 8 No 2 (2022): JURNAL SIPILKRISNA
Publisher : Fakultas Teknik Universitas Krisnadwipayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61488/sipilkrisna.v8i2.162

Abstract

Various studies in the field of concrete were carried out in an effort to improve the quality of concrete, thetechnology of the research and experiment materials intended to answer the increasingly high demands on the useof concrete.One way to reduce excessive mining of natural materials is by utilizing waste glass bottles and brown sugar,especially glass bottles which area lot of waste and accumulate in the environment around the house.This study aims to analyze the compressive strength of concrete using wasteglass bottles and brown sugar as a substitute for fine aggregate and water. Mix Design in glass bottles and brownsugar as a substitute for fine aggregate and water. Mix Design in This study uses the SNI 2000 method. Thecomposition of glass bottle waste is 5% and 10% to fine aggregate while brown sugar is 0.25% and 0.50% againstwater. The specimens were cylindrical in shape with a diameter of 15 cm and a height of 30 cm as many as 24specimens aged 7, 14 and 28 days. The results of the average compressive strength using glass bottle waste and brown sugar with a composition of 5% and 10% for fine aggregate and 0.25% and 0.50% for water, namely for variation 1 of 8.98Mpa, 11.74 Mpa , 16.06 Mpa while for variation 2 it is 7.45 Mpa, 9.87 Mpa, 14.99 Mpa. then the percentagereduction of concrete variations 1 and 2 against normal concrete is 4.02%, 5.86%, 3.94% and 5.55%, 7.73%,5.01%.
Kajian Hasil Uji Mutu dan Rencana Biaya Penggunaan Sambungan Mechanical Coupler Gita Puspa Artiani; Achmad Pahrul Rodji; Ferry Anggriawan
Jurnal Sipil Krisna Vol 9 No 1 (2023): Jurnal Sipil Krisna
Publisher : Fakultas Teknik Universitas Krisnadwipayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61488/sipilkrisna.v9i1.251

Abstract

The construction of the Jakarta Kemayoran Tower was carried out using a mechanical coupler connection in the building column construction, because overlapping or conventional connections are not the right way to connect reinforcement. The main reinforcement in the column uses threaded iron with a diameter of 25. The mechanical coupler connection method used in this study is a coupler grip, with the planned tensile strength of the reinforcing steel being 525 N/mm². The column structure that is sampled is the main column with the size of the main steel reinforcement ≥ 32 mm. This study focuses on the analysis of quality tests and cost plans. The analytical approach used is descriptive analysis by looking for a comparison of the two variables. Testing the tensile strength of concrete reinforcement using a mechanical coupler connection showed successive results of 621.04 MPa, 624.86 MPa, 625.41 MPa, these results exceeded the minimum limit specified in SNI-2052-2017, namely 525 MPa. Meanwhile, the calculation of connection costs using the mechanical coupler method requires a total cost of Rp. 139,824,000, - while the cost of using a conventional connection is Rp. 191.161.127,-. From the calculation results, it is obtained that the difference is 37% cheaper than conventional reinforcement connections.This research can be used as a reference in alternative selection of reinforcement joints.
ANALISIS GEOMETRIK JALAN PADA ENAM RUAS JALAN TOL DALAM KOTA JAKARTA SEKSI A KELAPA GADING – PULO GEBANG Achmad Pahrul Rodji; Indriasari; Deby Marc Handoyo
Jurnal Sipil Krisna Vol 9 No 1 (2023): Jurnal Sipil Krisna
Publisher : Fakultas Teknik Universitas Krisnadwipayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61488/sipilkrisna.v9i1.255

Abstract

In terms of transportation, the service of toll road infrastructure is the main factor that must be considered, so it must meet the road geometric technical requirements, so that toll road users are safe and comfortable driving. The influence of centrifugal force that occurs in corners often results in less safety and comfort for toll road users, both drivers and passengers. The object of research is the Six Sections of the Jakarta City Inner Toll Road Section A, the Kelapa Gading – Pulo Gebang section because it is one of the toll roads that has good road geometry for horizontal and vertical alignments. The purpose of this study is to analyze the road geometry on the Six Sections of the Jakarta City Inner Toll Road Section A Kelapa Gading – Pulo Gebang Sta 24+850 – Sta 25+350. The method uses field research methods, analyzes and evaluates the data based on the 2009 Bina Marga. Data analysis is to determine the geometric design of a comfortable and safe toll road. The results showed that the results of the 2009 Bina Marga calculation analysis, obtained a design speed of 77 km/hour with R = 231 m and Ts = 287.51 m, while the actual field speed with a design speed of 77 km/hour R = 233.50 m and Ts = 247 m. So there are differences in the values of R and Ts due to limited land in the field and the maximum speed set is 70 km/hour. In this condition, the geometric design of the road must be in accordance with the conditions of the land in the field and conduct a preliminary survey using the Theodolit Station measuring instrument in order to obtain elevation data for different heights and contour conditions in the area to be built for a road.
UTILIZATION OF RUBBER SANDALS WASTE AS PARTIAL SUBSTITUTION MATERIAL FOR COARSE AGGREGATE IN CONCRETE MIXTURE PANDU ARIFIN; SAHAT MARTUA SIHOMBING; ACHMAD PAHRUL RODJI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 02 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2024
Publisher : CV KULTURA DIGITAL MEDIA

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

Abstract

In Indonesia, there is an increasing demand for building materials, especially concrete which is popularly used to construct bridges, houses, buildings, and highways because it is cheap and easy to form. However, concrete has weaknesses in resisting tensile loads and the repeated use of aggregates leads to a reduction in natural resources. This study investigates the use of waste rubber sandals as an alternative to coarse gravel in concrete to reduce environmental damage and add economic value to construction projects through experimental concrete strength testing. From the data analysis and discussion in the previous chapter regarding the use of rubber sandal waste with variations of 0%, 5%, and 10%, the results of compressive strength testing on normal concrete at the age of 28 days were 440 kN (f'c 24.91 MPa), while in variation 1 rubber sandal waste 5% was 297 kN (f'c 16.82 MPa) and in variation 2 rubber sandal waste 10% was 248 kN (f'c 14.04 MPa).
THE EFFECT OF GREEN SHELL POWDER WASTE AS A SUBSTITUTE FOR FINE AGGREGATE IN ASPHALT CONCRETE WEARING COURSE MIXTURE DANIEL SIMATUPANG; SAHAT MARTUA SIHOMBING; ACHMAD PAHRUL RODJI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 02 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2024
Publisher : CV KULTURA DIGITAL MEDIA

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

Abstract

Waste, the residue of production that has lost its primary purpose, including garbage and wastewater, is a global problem due to its potential for contamination and the spread of disease. In Indonesia, it is estimated that around 21.88 million tons of waste will be produced in 2021. To address this problem, it is important to find ways to reduce waste, such as using it in asphalt production. In an effort to create a more durable road pavement, researchers have experimented with mussel waste as an additive to improve asphalt quality. This study examined the use of mussel waste to replace fine aggregate in asphalt concrete layers, in the hope of extending the life of the road. When mussel waste powder was substituted for 25% filler in the Asphalt Concrete-Wearing Concrete mixture, Marshall characteristic analysis resulted in a stability value of 2487 kg, VMA 36.51%, flow 3.35 mm, VIM 26.19%, and MQ 742 kg/mm, all of which met the requirements. However, the VFB value of 28.27% does not meet the requirements of Bina Marga 2018. The combination produces a stability value of 2568 kg, VMA 37.31%, flow 3.4 mm, VIM 27.12%, and MQ 756 kg/mm ​​in the variation of green mussel powder waste 50%, all of which meet the requirements. However, the VFB value of 27.31% does not meet the requirements of Bina Marga 2018. The mixture design with the results of the cement filler presentation shows the following composition: 17% for hot bin I, 45% for hot bin II, 32% for hot bin III, 6% for cement filler, and 6% for asphalt.
ANALYSIS OF THE USE OF ACRYLIC WASTE AS A PARTIAL SUBSTITUTION OF COARSE AGGREGATE FOR CONCRETE COMPRESSIVE STRENGTH DEDY RAMADHAN; ACHMAD PAHRUL RODJI; INDRIASARI
INTERNATIONAL JOURNAL OF MULTI SCIENCE Vol. 4 No. 02 (2024): INTERNATIONAL JOURNAL OF MULTISCIENCE - MAY -AUGUST 2024
Publisher : CV KULTURA DIGITAL MEDIA

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Abstract

Acrylic, or polymethyl methacrylate, is a synthetic polymer that has superior properties compared to glass, such as flexibility, light weight, easy to process (cut, drill, polish), and can be formed into various complex shapes through thermal processes. This material has advantages in resistance to impact and weather conditions, and is environmentally friendly because it can be recycled. Acrylic is widely used in industries, including advertising, automotive, and interior design, due to its ease of processing and aesthetics. However, the production of acrylic products is still considered inefficient and expensive, triggering the need for new tools for the bending process to increase the efficiency of making acrylic-based products. Based on the results of the average concrete compressive strength test for normal concrete at the age of 28 days is 11.94 Mpa, the compressive strength results are less than the planned concrete quality of 25 Mpa; Based on the research results, it was found that concrete using acrylic waste as a partial replacement for coarse aggregate at the age of 28 days at a variation of 3% was 13.94 MPa, a variation of 5% was 24.87 MPa and a variation of 7% was 7.97 MPa, so it can be concluded that the more acrylic waste mixture for the compressive strength of concrete, the results will decrease.
Co-Authors Aditya Maulana Ahmad Supriyatna Al Muzamil Ali Khumaidi Asaddulah Mumtaz DANIEL SIMATUPANG Deby Marc Handoyo DEDY RAMADHAN FADLUL ADLI Ferry Anggriawan Gali Pribadi GEDE SUMANTRA Gita Puspa Artiani Hendi Suhendraya Muchtar Hudzaifah Al jihad Iim Wasliman Indriasari Indriasari Lydia Darmiyanti Mochammad Risky Ramadhan Muhammad Fahmi Tri Susilo Nandang Koswara Novi Ruhviyanti Novi Rukhviyanti Novrihan Tanjung PANDU ARIFIN Parlindungan Panjaitan Qawi Ayadillah Hariyanto Rifky Arrahman Sahat Martua Sihombing Sahat Martua Sihombing Sepryhatin Dioputra Sukadi Wargijono Utomo Yonas Prima Arga Rumbyarso