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All Journal Jurnal Rekayasa Jurnal Rekayasa Sipil dan Desain Teras Jurnal Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung
Hasti Riakara Husni
UNIVERSITAS LAMPUNG
Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Other

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Analisis Perhitungan Gaya Internal Rangka Ruang dengan Menggunakan Metode Elemen Hingga Widyawaty, Oktaviany; Husni, Hasti Riakara; Suyadi, Suyadi
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 4 No. 1 (2016): Edisi Maret 2016
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v4i1.346

Abstract

The finite element method is a method of modelling of an object to divide into smaller parts as awhole still has the same properties as the whole thing before it was divides into smaller sections(discretization). The finite element method can be used to analyse various types of structures, suchas plane truss, space truss, plane frame, space frame, beam, and grid.The main difference space truss and space truss are the number of degrees of freedom at eachnode. Each bar in order to space has six degrees of freedom. A space truss structure formed by thecombination of elements order in XYZ space. Variations of incorporation requires thetransformation of the characteristic elements of the local coordinate system to the globalcoordinate system.In this study, analysis of space truss using the finite element method will be assisted with thesoftware Matlab. Where the result of Matlab will be compared with result from the SAP2000. Theresults of this analysis are joint displacement, joint reaction, and element forces.Keywords : Finite Element Method, Space Truss, Matlab
Analisis Layout Shearwall Terhadap Perilaku Struktur Gedung Andalas, George; Suyadi, Suyadi; Husni, Hasti Riakara
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 4 No. 3 (2016): Edisi September 2016
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v4i3.453

Abstract

 Shearwall is one of alternative solution in planning of building structure for earthquake-resistant. Shearwall is able to affect stiffness of the building structure and provide a structure with good ductility, so as to minimize the damaged caused by earthquake shaking. This study aimed  to analyze the positioning of shearwall on a building structure models using non-linear static analysis (Pushover)   In the analisys, shearwalls on each models are placed at different position. The performance of the building structure was analyzed using SAP2000 program. The result of the analysis is a form of drift ratio on each model of the buliding structure. From the result obtained drift value ratio on  without shearwall model, model 1, model 2, model 3, model 4, model 5, model 6 in the X direction in sequences as follows: 54 x 10-8; 48 x 10-8; 42 x 10-8; 30 x 10-8; 28 x 10-8; 8 x 10-9; 8 x 10-9 . While in the Y direction as follows: 77 x 10-5; 66 x 10-5; 62 x 10-5; 51 x 10-5; 23 x 10-5; 15 x 10-5; 14 x 10-5. So we can conclude that model 6 has better performance compared to other models. Then, the optimum model of positioning ot the shearwalls is model 6.    keywords: SAP2000, pushover analysis, shearwall, erathquake load. 
Perancangan Struktur Apartement 20 Lantai Bandar Lampung Alim, Fauzil; Bayzoni, Bayzoni; Husni, Hasti Riakara
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 3 No. 2 (2015): Edisi Juni 2015
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v3i2.464

Abstract

Bandar Lampung is one of the cities in Indonesia, which is being developed at this time. Thesedevelopments will affect population and workforce. The flurry will make the work of the public donot have much free time to prepare for daily needs. Condition, situation, and the state of society asthis causes them to prefer a place that provides various kinds of necessities of life (one stopservice).This apartment structure design project at the Teluk Betung which consists of 20 floors has 620rooms with various types and consists of Type A (230 m2), Type B (152 m 2 ), Type C (135 m 2 ), TypeD (120 m 2 ), Type E (98 m 2 ), Type F (73 m 2 ) and Type G (54 m 2 ). The apartment is also equippedwith various facilities such as a cafeteria, mini market, restaurant, fitness room, a mosque and amultipurpose hall.To analyze the structure, ETABS Non Linear version 9.7.4 software are used to get internal forcesand will be used in manually design of reinforce concrete refer to Concrete SNI code 03-2847-2002 and Earthquake code SNI 03-1726-2002. To compare the result Sp Coloum v. 4.81. and RC.Beam Design V.1.0. are used. The calculation obtained 80 x 80 cm coloum with 24 D 25reinforcement, 35 x 60 cm primary beam and 15 x 30 cm secondary beam. The pile pondation areused for pondation with 9 pile pondation, 60 cm diameter and 18 m depth.Key words: Structure, ETABS, Pile Pondation
Pengaruh Resin Epoksi Terhadap Mortar Polimer Ditinjau dari Kuat Tekan, Kuat Tarik Belah, Daya Serap Air dan Scanning Electron Microscope Arif, Joksan; Husni, Hasti Riakara; Sebayang, Surya
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 3 No. 3 (2015): Edisi September 2015
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v3i3.469

Abstract

Polymer mortar is a material formed through the process of building a composite concrete andbuilding polymers. Polymer mortar development efforts have been conducted in developedcountries. Until now the development of polymer mortar is still underway to reduce the use of thesemen, in order to anticipate the global warming. One of them is by using a polymer adhesivecement replacement material so produced a powerful mortal in a shorter time.On research was created mortal polymers without cement, fine aggregate and epoxy resin as thebinder of concrete. The composition of the raw materials of polymer mortar made with acomparison between aggregate and epoxy resins, with her blend of 20%, 25% .30%, 35%, 40% (%of the total weight of the aggregate). Mortar has been mold then dried in an oven at a temperatureof 600 C for 24 hours. Parameters measured include: water absorption, compressian strength,tensile strength, and microstructure analysis using a Scanning Electron Microscope (SEM). Theobservations suggest that the optimum condition of polymer mortar obtained on composition: 65%of the aggregate (aggregate) and 35% epoxy resin (% of weight of fine aggregate). In this state ofpolymer mortar characteristics obtained as follows: water absorption = 3,57%, compressianstrength = 6.80 MPa, and tensile strength = 1.75 Mpa. The microstructure of the polymer concreteanalyzed using SEM. Result showed that pore size distribution was uneven, and wisps of epoxyresin ≤ 30 μm.Keywords: compressian strength, tensile strength, water absorption, Scanning ElectronMicroscopy (SEM), polymer mortal.
ANALISIS PERBANDINGAN KEHILANGAN PRATEGANG AKIBAT METODE STRESSING SATU ARAH DAN DUA ARAH PADA JEMBATAN BETON PRATEGANG Rizkia, Selvia Rahma; Suyadi, Suyadi; Husni, Hasti Riakara
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 5 No. 2 (2017): Edisi Juni 2017
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v5i2.668

Abstract

A prestressed concrete bridge is a construction structure bridging one location to another location and this is made by stressing strands with opposite force caused by the external loading. The stressing process can be done before the concrete is molded (pre-tensioning) and after the concrete is molded (post-tensioning). The stressing in the prestressed post-tensioning concrete can be done with two methods; the one way and two ways stressing. Stressing by using these two stressing methods may cause different prestress force loss in the concrete. The objective of this research was to find out the influence of one way and two ways stressing methods to the prestress force loss, analysis was conducted by estimating prestress forces, determining amounts and lines of stranded-wire tendons, estimating pre-stress force loss because of one way and two ways stressing methods and force controlling and deflection in the girder. This research used PC I girder, PC U girder, and box girder types. The analysis results showed that the prestress force loss in the one way stressing method in PC I girder was 30.826%, 30.3401% in PC U girder, and 31.885% in box girder. The prestress force loss in two ways stressing method was 29.8397% in PC I girder, 29.3169% in PC U girder, and 31.4955% in box girder. The conclusion was that the prestress force loss in the girder by using one way stressing method was bigger than in two ways stressing method.Keywords: prestress concrete, stressing method, one way, two ways.
Perbandingan Volume Kebutuhan Baja pada Pembuatan Struktur Rangka Atap Bentang 30 m Berdasarkan SNI 1729-2015 Anggraini, Sella; Bayzoni, Bayzoni; Husni, Hasti Riakara
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 5 No. 2 (2017): Edisi Juni 2017
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v5i2.679

Abstract

The use of steel as a framework for the roof of the warehouse building requires research on the efficiency of its volume according to the form of the frame designed by considering the strength and the economical of the building materials. In the implementation of this research the calculation of structural analysis using method of joint. The outline of the implementation step is to determine the profile data (quality and dimensions) and various controls on Gording, calculate the loading using SNI 1727-2013, calculate the structure analysis of each roof frame using Microsoft Excel, calculate the analysis of truss frame design (Tensile and press memberss), weld joint planning using SNI 1729-2015 and calculate the steel requirement volume ratio of the four types of roof truss structure. The result of the research shows that the volume of steel used in Type 1 roof truss construction is 0,2046 m3 with weight 1571,4287 kg; In Type 2 roof truss construction is 0,1862 m3 with weight 1461,5889 kg; In Type 3 roof truss construction is 0,1499 m3 with weight 1176,0578 kg; In Type 4 roof truss construction is 0,1488 m3 with weight 1167,4652 kg. Based on these results, the Type 4 is the most optimal type of roof truss construction, because the lowest volume and weight of steel was obtained. Keywords: Roof frame, SNI 1729-2015, steel, tensile member, press member
Perbandingan Volume Rangka Kayu Pada Pembuatan Rangka Atap Kuda-Kuda Bentang 8 (Delapan) Meter Berdasarkan SNI 7973-2013 Darmawan, Rizqi; Husni, Hasti Riakara; Widyawati, Ratna
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 6 No. 2 (2018): Edisi Juni 2018
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v6i2.823

Abstract

AbstractThe roof frame is a building structure that is above ringbalk. The roof frame serves as a retaining roof from pressure provided by the roof . Constructs of trusses are generally made of the same type and dimensions of wood use for short, medium, or long spans. Therefore, it needs analysis wood requirement of truss. This study aims to determine the dimensions and volumes of truss and compare volume of efficient timber requirements of the planned. In this research,volume requirement analysis of truss.The first, selection of wood used in the span of 8 meters. Then make 4 types of truss. Then, load analysis using SAP2000 to get the force. Having obtained value of force, then performed an analysis of the pull force and press so that the dimensions used are safe. Furthermore, the calculation of the volume of wood demand on each type of the planned, so that obtained efficient comparison volume of the 4 types.In the analysis, the dimensions of each type are type 1 (6/6 cm, 6/8 cm, 8/8 cm and 8/10 cm), type 2 (4/6 cm, 6/8 cm, and 8/8 cm), type 3 (4/6 cm and 6/8 cm) and type 4 (4/6 cm, 6/8 cm, and 8/10 cm). Then the volume of wood demand on type 1 (0,2038 m3), type 2 (0,1383 m3), type 3 (0,1229 m3), and type 4 (0,1797 m3). Based on the stem rod analysis, it was concluded that the most efficient roof truss type of the 4 types, namely the 3rd type.Keywords: Roof frames, truss, volume of wood
Pengaruh Penambahan styrofoam Pada Kubus Bata Ringan CLC Terhadap Kuat Tekan Dan Daya Apung Solikhin, Ridho Solikhin; Helmi, Masdar; Husni, Hasti Riakara; Suyadi
REKAYASA: Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol. 29 No. 3 (2025): Desember 2025
Publisher : Jurusan Teknik Sipil Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/rekrjits.v29i3.129

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh penambahan styrofoam terhadap sifat fisik dan mekanik pada bata ringan tipe cellular lightweight concrete. Penelitian ini dilatarbelakangi oleh kebutuhan akan material bangunan yang ringan, ramah lingkungan, dan memiliki daya apung tinggi, khususnya untuk konstruksi seperti dermaga apung. Metode yang digunakan adalah eksperimen laboratorium dengan variasi volume styrofoam berbentuk kubus berukuran 5x5x5 cm, 7,5x7,5x7,5 cm, dan 10x10x10 cm, yang setara dengan persentase 0%, 3,70%, 12,5%, dan 29,62% dari total volume bata ringan. Setiap variasi diuji untuk mengetahui kuat tekan serta daya apungnya. Hasil penelitian menunjukkan bahwa semakin tinggi persentase styrofoam, berat jenis bata ringan menurun, yaitu dari 928,19 kg/m³ menjadi 551,11 kg/m³. Daya apung meningkat dari 13,5 N menjadi 18,0 N. Namun, kuat tekan mengalami penurunan signifikan dari 3,71 MPa menjadi 0,95 MPa. Berdasarkan hasil tersebut, penambahan styrofoam terbukti mampu mengurangi berat dan meningkatkan daya apung bata ringan, namun menurunkan kekuatan tekan. Komposisi optimal terdapat pada penambahan 12,5%, karena mampu memberikan keseimbangan antara bobot ringan, kemampuan mengapung, dan kekuatan struktural yang masih dapat diterima.
Co-Authors ., Bayzoni Adha, Emil Surya Alim, Fauzil Amanda, Oktary Putri Ammaliya Anjani Amril Ma'ruf Siregar Amril Maruf Siregar Andalas, George Andi Kusnadi Andi Setiawan Anggraini, Sella Anjani, Ammaliya Ardo Saputra Arif, Joksan Ashruri Ashruri, Ashruri Asih, Windi Retno Atullah, Rafif Ansori Bastari, Muh Alieftama Dytam Bayzoni . Bayzoni Bayzoni Bayzoni Bayzoni, Bayzoni Chandra, Nanang Aldika Chatarina Niken Darmawan, Rizqi Dwi wahyuni Setia Budi Utami, Chatarina Niken Dzakiroh, Alda Alfiah Eddy Purwanto Fadzilah, Masrifatun Farabi, Muhammad Al Fernanda, Raka Aditya Fikri Alami Fikri Alami Firdha, Risty Amelia Halawa, Vince Nukrisman Hania Cipta, Ade Permata Hilmi, Zihan Ramdan Ilham Fajar Khairi Isneini, Mohd Khairi, Ilham Fajar Khasanah, Felin Khotimah, Siti Usnul Kurniawati, Risa Laily, Fasya Noor Laksmi Irianti Masdar Helmi Mohd. Isneini Mudia, Tutia Rahmayani Mustofa, Ragat Aji Niken, Chatarina Nopendrianto, Antok Nurvireza, Daffa Oktaviany Widyawaty, Oktaviany Prameswari, Sabrina Cintia Prihandoyo, Rizky Putra Sianipar, Michael Yuda Cen Ratna Widyawati Restiawan, Arie Dwie Reviana Reviana Rizkia, Selvia Rahma Rizky Prihandoyo Rizqi Darmawan Sabila, Widya Lulu Amalia Safari, Azka Muhammad Saputra, Ardo Saputri, Mellynia Siregar, Amril Ma'ruf siregar, amril maruf Solikhin, Ridho Solikhin Sungkai, Chindrika Kumara Surya Sebayang Susanto Susanto Suyadi Suyadi Suyadi Tiara Anggraini Vera Agustriana Noorhidana Wafi, Alvino Wati, Reni Anjar Zulva, Indana