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All Journal Jurnal Rekayasa Jurnal Rekayasa Sipil dan Desain Teras Jurnal Nemui Nyimah
Laksmi Irianti
Universitas Lampung
Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Other

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PEMBINAAN KWT MAKMUR JAYA MELALUI PELATIHAN PEMBUATAN BERBAGAI JENIS KOPIAH LAMPUNG UNTUK MEMOTVASI DALAM BERWIRAUSAHA Irianti, Laksmi; Werena, Rosalia Dwi; Putra, Andius Dasa; Tiara, Tiara
Nemui Nyimah Vol. 3 No. 2 (2023): Nemui Nyimah Vol.3 No.2 2023
Publisher : FT Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/nm.v3i2.110

Abstract

The Women's Farmers Group serves as a platform for the community, particularly women,to manage and express various ideas in the field of agriculture as well as a way for group members tolearn and gain perspective. As a result, group activities are expected to be imaginative and up-to-date.The Makmur Jaya Women's Farmers Group has performed a number of functions that have benefitedthe community, including serving as a venue for learning through ordinary activities, training suppliedas a discourse of cooperation in welfare efforts for the community, and fostering creativity to increaseincome. Producing several types of traditional Lampung skullcaps as part of this activity would helpmembers of the Makmur Jaya women's farmer group to promote and enhance their creativity. Bycreating several styles of traditional Lampung skullcaps, this project intends to encourage and enhancethe creativity of the Makmur Jaya women's farmer group members. This would enable them to becomeentrepreneurs and boost the local economy by selling their handmade skullcaps as souvenirs. Trainingin the creation of skullcaps of various sorts and shapes will be conducted, with the assistance ofartisans from the Adian Tapis Lampung Foundation. Caps with Lampung-themed designs are thefinished product of this training and are ready for sale
Pengaruh Penambahan Fiber Baja Seling dengan Volume Fraction 0,4%, 0,6% dan 0,8% terhadap Kuat Tekan dan Kuat Tarik Lentur pada Beton Mutu Normal. Marvin, Tiffany; Purwanto, Eddy; Irianti, Laksmi
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.v4i3.402

Abstract

This research was conducted to study and determine the influence of steel sling fiber 0,4%, 0,6% and 0,8% volume fraction of compressive strength and flexural strength on normal quality concrete. This study used an experimental method in the Laboratory of Material and Construction Engineering Faculty, University of Lampung. The compressive strength test specimen is a 30 cm height and 15 cm diameter cylinder and the flexural strength test specimen is a 40 cm length, 10 cm width and 10 cm height beam. The compressive strength and flexural strength test of  normal quality concrete with 0,4%, 0,6% and 0,8% volume fraction held after 14 and 28 days. The maximum compressive strength and flexural strength value are at 0,6% volume fraction and decrease at 0,8% volume fraction. The maximum compressive strength is 27,5537 MPa at 0,6% volume fraction and the optimum value  from polynomial trendline chart is 27,6028 MPa at 0,5754% volume fraction. The maximum flexural strength is 5,6899 MPa at 0,6% volume fraction and the optimum value from polynomial trendline chart is 5,7163 MPa at 0,5687% volume fraction. The steel sling fiber didn’t affect a high increase of the compressive strength, but this steel sling fiber had a high flexural strength which is 1733,46 MPa, so it affected a significant increase of the flexural strength test.Keywords : compressive strength, flexural strength, fiber concrete, steel sling fiber
Analisis Joint Balok Kolom dengan Metode SNI 2847-2013 dan ACI 352R-2002 pada Hotel Serela Lampung Ristanto, Eddy; Suyadi, Suyadi; Irianti, Laksmi
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.v3i3.481

Abstract

This study aimed to analyze the relationship beam-column design at Building Serela LampungHotel, which refers to SNI 2847-2013 and Methods ACI 352R-2002. In the analysis, the existingshear force on beam-column joint relationship is greater than the shear forces that are on thebeams and columns. Therefore it is necessary that the relationship between the shearreinforcement. From a review of existing columns and beam size is sufficient to carry the shearforces that occur. There are differences between the results of the review of planning method SNI2847-2013 and methods ACI 352R-2002. From the results obtained with SNI 2847-2013 shearforce to review the interior, roof interior, exterior, roof exterior, corner, and roof cornersequentially as follows: 1682.544 KN; 1380.365 KN; 607.759 KN; 364.932 KN; 607.759 KN;364.932 KN. While the method of ACI 352R-2002 as follows: 1712.750 KN; 1440.799 KN;632.642 KN; 413.498 KN; 632.642 KN; 413.498 KN. Although both methods are considered safein the planning of the object of study Serela Lampung Hotel but in general planning methods ACI352R-2002 a higher level of safety and efficiency in terms of planning method SNI 2847-2013 evengreater levels of efficiency.Keywords: SNI 2847-2013, ACI 352R-2002, joint, beams, columns, seismic load, shear force,inelastic.
Pengaruh Penambahan Fiber Baja Seling Dengan Volume Fraction 0,4% Terhadap Kuat Tekan dan Kuat Tarik Lentur dengan Tinggi Beton Serat 0; 0,25; 0,50; 0,75 dan 1 Pada Beton Mutu Normal bimantara, bagus; Purwanto, Eddy; Irianti, Laksmi
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 4 No. 4 (2016): Edisi Desember 2016
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v4i4.501

Abstract

AbstractConcrete is one of the important parts in the development of infrastructure building. Many advantages obtained from the use of concrete, nevertheless there is a shortage which is weak against tensile and ductile. The weakness of concrete can be improved by adding fiber into the concrete mix evenly with random orientation. This study was conducted to determine the effect of addition of wire rope fiber on compressive strength and flexural tensile strength with the height of fiber-reinforced concrete 0; 0.25; 0.50; 0.75 and 1 on normal strength concrete. This study used an experimental method which is conducted at the Laboratory of Materials and Construction Faculty of Engineering, University of Lampung. The sample for compressive strength test is a cylinder with a diameter of 15 cm and 30 cm in height, while the sample for flexural tensile strength test is a block with a length of 40 cm, 10 cm in width and 10 cm in height. The testing for the compressive strength and flexural tensilestrength of normal concrete with high-quality fiber-reinforced concrete 0; 0.25; 0.50; 0.75 and 1 performed after 14 and 28 days. Maximum compressive strength and flexural strength occurs at a height of 0,75 fiber-reinforced concrete. The maximum compressive strength is 27.3649 MPa, increasedby 3.5714%. The maximum flexural strength is 5.4880 MPa, increasedby 18.9475%. The addition of wire rope fiber does not make a major contribution to the increase of compressive strength, but the flexural tensile strength. The wire rope fiber in this study has high tensile strength, i.e. 1733.46 MPa so it can provide a significant increase in the flexural strength. Keywords : compressive strength, flexural strength, fiber concrete, wire rope fiber  AbstrakBeton merupakan salah satu bagian penting dalam perkembangan infrastruktur bangunan. Banyak kelebihan yang didapatkan dari penggunaan beton, meskipun demikian terdapat kekurangan yaitu lemah terhadap tarik dan bersifat getas. Kelemahan beton dapat diperbaiki dengan menambah serat kedalam adukan beton secara merata dengan orientasi acak. Penelitian ini dilakukan untuk mengetahui pengaruh penambahan serat baja seling terhadap kuat tekan dan kuat tarik lentur dengan tinggi beton serat 0; 0,25; 0,50; 0,75 dan 1 pada beton mutu normal. Studi ini menggunakan metode eksperimen yang dilakukan di Laboratorium Bahan dan Konstruksi Fakultas Teknik Universitas Lampung. Benda uji kuat tekan berupa silinder dengan diameter 15 cm dan tinggi 30 cm, benda uji kuat lentur berupa balok dengan panjang 40 cm, lebar 10 cm dan tinggi 10 cm. Pengujian kuat tekan dan kuat lentur beton mutu normal dengan tinggi beton serat 0; 0,25; 0,50; 0,75 dan 1 dilakukan setelah 14 dan 28 hari. Kuat tekan dan kuat lentur maksimal terjadi pada ketinggian beton serat 0,75. Kuat tekan maksimal sebesar 27,3649 MPa, meningkat sebesar 3,5714%. Kuat lentur maksimal sebesar 5,4880 MPa, meningkat sebesar 18,9475%. Penambahan serat baja seling tidak memberikan kontribusi yang besar dalam peningkatan kuat tekan, akan tetapi pada kuat tarik lentur. Serat baja seling pada penelitian ini mempunyai kuat tarik yang tinggi, yaitu 1733,46 MPa sehingga dapat memberikan peningkatan kuat lentur yang signifikan. Kata kunci : kuat tekan, kuat lentur, beton serat, serat baja seling.
Pengaruh Bottom Ash sebagai Bahan Pengganti Sejumlah Pasir Terhadap Kuat Tekan, Kuat Lentur dan Modulus Elastistas Beton Mutu Tinggi Triwidinata, Sholahuddin; Sebayang, Surya; Irianti, Laksmi
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.v5i2.625

Abstract

AbstractOver time the production of high strength concrete it will increse more and more and otherwise it will decrease the natural resources. One of them is sand as concrete material. Based on the problem, it will be required another material, that can replace a number of the sand. Bottom ash is one of material from waste coal plant, generally have particle size or fine granule like as sand. This research is used to determine the variation of sand and bottom ash for high strength concrete. The testing are compressive strength with cylinder concrete 10x20 cm, flexural strength with beam concrete 10x10x40 cm, and modulus of elasticity concrete with cylinder concrete 15x30 cm. The compositions of the bottom ash for substitution the sand are 0%, 20%, 40%, 60%, 80% and 100%. The results of the compressive strength and flexural strength optimum testing are showed on variation 80% of bottom ash. Compressive strength values are 39,68 MPa (7 days age) and 45,41 MPa (28 days age). Flexural strength values are 4,62 MPa (7 days age) and 5,53 MPa (28 days age). Modulus of elasticity concrete optimum are showed on variation 20% and 80% of bottom ash with 60625,67 MPa and 59441,67 MPa (28 days age).  Keywords : high strength concrete, bottom ash, compressive strength, flexural strength, modulus of elasticity concrete.   AbstrakSeiring berjalannya waktu produksi beton mutu tinggi semakin lama akan semakin meningkat dan sebaliknya akan mengakibatkan berkurangnya sumber daya alam. Salah satunya ialah pasir sebagai bahan baku beton. Berdasarkan permasalahan tersebut, maka diperlukan suatu material lain yang dapat menggantikan sebagian sumber daya alam tersebut. Bottom ash merupakan salah satu material dari limbah hasil proses pembakaran batubara pada sektor pembangkit listrik, umumnya memiliki ukuran partikel atau butiran yang halus seperti pasir. Penelitian ini dilakukan untuk menentukan penggunaan variasi pasir dan bottom ash yang baik bagi beton mutu tinggi. Pengujian berupa uji kuat tekan dengan silinder beton 10x20 cm, uji kuat lentur dengan balok 10x10x40 cm dan modulus elastisitas beton dengan silinder beton 15x30 cm. Komposisi penggantian pasir dengan bottom ash sebanyak 0%, 20%, 40%, 60%, 80% dan 100%. Hasil pengujian kuat tekan dan kuat lentur optimum diperoleh pada variasi 80%bottom ash. Nilai kuat tekan sebesar 39,68 MPa (umur 7 hari) dan 45,41 MPa (umur 28 hari). Nilai kuat lentur sebesar 4,62 MPa (umur 7 hari) dan 5,53 MPa (umur 28 hari). Nilai modulus elastisitas beton optimum diperoleh pada variasi 20% dan 80% bottom ashyaitu sebesar 60625,67 MPa dan 59441,67 MPa (umur 28 hari). Kata kunci : beton mutu tinggi, bottom ash, kuat tekan, kuat tarik lentur, modulus elastisitas beton  
PERBANDINGAN PENGARUH PENAMBAHAN SERAT BENDRAT LURUS (STRAIGHT) DENGAN SERAT BENDRAT BERKAIT (HOOKED) TERHADAP PERILAKU BETON DENGAN BEBAN TEKAN BERULANG Faizah, Poppy Nitiranda; Purwanto, Eddy; Irianti, Laksmi
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.v5i2.735

Abstract

In this research, the concrete mixture is added by the material of straight and hooked wire bendrat fibers. This addition aimed to study and compare the effect of adding bendrat fiber straight and hooked to the compressive strength, tensile strength and flexural strength in normal quality concrete with 0.75% fiber concentration and aspect ratio 60 with repeated press load. The test specimen compressive and  tensile strength in the form of cylinders with a diameter of 15 cm and height 30 cm and the flexural strength test specimen in the form of beam with a length of 60 cm, width 15 cm and height 15 cm. Testing is done after 28 days. Concrete with additional hooked bendrat fiber is more able to withstand fatigue due to repeated load that generates more experienced loading intervals until concrete destroyed, the compressive strength at the 13th interval, 14th tensile and 6th flexural. The compressive strength, tensile and flexural maximum split value occurred in the concrete with the addition of hooked bendrat fiber. However, the value did not increase significantly between the variations of straight bendrat fiber with hooked bendrat fiber. The maximum compressive strength in the hooked bendrat fiber of 34.5189 MPa, tensile strength of 3.2067 MPa and flexural strength of 8.9380 MPa.______ Key words:   bendrat fiber, repeated press load, compressive strength, tensile strength, flexural strength.
Studi Eksperimental Pengujian Kuat Tekan, Kuat Tarik Belah dan Kuat Lentur pada Campuran Beton dengan Penambahan Serat Kawat Bendrat Berkait Zhafiira, Atika Ulima; Purwanto, Eddy; Irianti, Laksmi
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 5 No. 4 (2017): Edisi Desember 2017
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v5i4.760

Abstract

Abstrak Beton adalah bahan konstruksi yang paling banyak digunakan untuk bangunan sipil dikarenakan memiliki beberapa kelebihan. Kelemahan pada struktur beton yaitu mempunyai kuat tarik yang rendah dan bersifat getas (brittle) sehingga beton diberi tulangan baja sebagai bahan alternatifnya. Pada penelitian ini, campuran beton diberi bahan tambah serat bendrat berkait.  Penambahan ini dilakukan untuk mengetahui pengaruh serat bendrat berkait terhadap kuat tekan, tarik belah dan kuat lentur pada beton mutu normal dengan variasi kadar serat 0%, 0,75%, 1,0% dan 1,25% dengan panjang serat 60 mm dan diameter 1 mm. Benda uji kuat tekan dan tarik belah berupa silinder dengan diameter 15 cm dan tinggi 30 cm berjumlah 24 buah dan benda uji kuat lentur berupa balok dengan panjang 60 cm, lebar 15 cm dan tinggi 15 cm sebanyak 12 buah. Pengujian dilakukan setelah 28 hari. Kuat tekan, tarik belah dan kuat lentur pada beton meningkat setelah diberi penambahan serat kawat bendrat berkait. Peningkatan optimum terjadi pada variasi kadar serat 0,75% dengan hasil berturut-turut sebesar 35,9336 MPa, 3,9848 MPa, dan 8,9380 MPa. Semakin banyak variasi kadar serat akan menyebabkan sulitnya pergerakan agregat sehingga semakin besar kemungkinan terjadi balling effect pada saat pengerjaan beton. Kata kunci : kawat bendrat, kuat tekan, tarik belah, kuat lentur.
Perencanaan Struktur Gedung 5 Lantai Menggunakan Balok dan Pelat Prategang Sesuai SNI 2847 2013 Pratama, Deska Adi; Sebayang, Surya; Irianti, Laksmi
Jurnal Rekayasa Sipil dan Desain (JRSDD) Vol. 6 No. 4 (2018): Edisi Desember 2018
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jrsdd.v6i4.992

Abstract

In multistorey building construction there are many types structural system that are being used such as reinforced concrete system, prestressed concrete system and composite system with its advantages in disadvantages. The purpose of this research was for designing 5 storey building using prestressed concrete for beams and slabs with SNI 2847-2013.  From analysis results, the dimension of hollow core slab is 1200 x 7500 x 250 mm with Ø12,7-300 strands. The reinforcement of non prestressed HCS are Ø16-250 for main reinforcement and Ø13-300 for cross reinforcement. The 15 m span prestressed beam has dimension 800 x 500 mm with 24-Ø12,7 strands. Shear and torsion design with Ø16-140 as stirrups and 8D19 as longitudinal reinforcement. The 7,5 m span prestressed beam has dimension 600 x 425 mm with 4-Ø12,7 strands. Shear and torsion design with Ø16-100 as stirrups and 10D19 as longitudinal reinforcement. The dimension of column is 600 x 600 mm with 26-D22 as main reinforcement and Ø16-175 for shear reinforcement on maximum load. In prestressed system design that applied for beam and slab based on SNI 2847-2013 on 5 storeys building has much smaller rebar percentage than normal reinforced system.
Co-Authors Abdullah, Habib Ilham Agustriana, Vera Amilia, Rahma Andius Dasa Putra Anggraeni, Sylvia Dewi bimantara, bagus Eddy Purwanto Faizah, Poppy Nitiranda Fikri Alami Gatot Eko Susilo Gusti, Melinda Hadi, Ayatullah Hasti Riakara Husni Isneini, Mohd Iswan Iswan karami, muhammad Malau, Joses Aristo Marvin, Tiffany Masdar Helmi Mohd. Isneini Nasution, Ali Napiah Niken, Chatarina Philipus, Philipus Prameswari Tw, Aqilla Regita Pratama, Deska Adi Puja, Novia Putra, Rivaldo Hartono Putri, Nur Mila Putri, Yoleta Tri Ramadhan, Vernady Napatino Ratna Widyawati Riana, Netta Ristanto, Eddy Rivan Adlia Wibowo, Rivan Adlia Safari, Azka Muhammad Sahast, Corry Jayaputri Surya Sebayang Suyadi Suyadi Tiara, Tiara Triwidinata, Sholahuddin Ulini'am, Adipati Syahidullah Vera Agustriana Noorhidana Werena, Rosalia Dwi Zahra, Ainaya Maudia Zhafiira, Atika Ulima