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ANALISIS KAPASITAS PROFIL BAJA WIDE FLANGE YANG EFISIEN SEBAGAI ELEMEN BALOK, KOLOM, DAN BALOK-KOLOM PADA STRUKTUR GEDUNG (Analisis Terhadap Profil IWF dan HCS Berdasarkan SNI 1729:2015) Anggara, Jeirry; Wahyuni, Ade Sri; Islam, Mukhlis
Inersia: Jurnal Teknik Sipil Vol. 16 No. 2 (2024)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/ijts.16.2.80-88

The design of the steel frame structure for beam, column and beam-column elements which takes quite a lot of time makes engineers it difficult forin the field of building construction. Engineers have to do several experiments to findsteel profiles IWF and HCS that are safe, efficient and economical. The problems that arise due to the length of the design process are the basis for this research. The research was conducted on 100 profiles IWF and HCS which consisted of 81 profiles IWF and 19 profiles HCS. The analysis was carried out with reference to SNI 1729:2015. The results of this study are in the form of moment capacity graphs and tables of axial capacity of steel profiles as well as coefficients of m and U. Moment capacity graphs and tables of axial capacity of IWF and HCS profiles produced can assist in designing safe and efficient steel profiles as beam, column and column elements. column beam. Efficiency testing of steel profiles used as beam-column elements proves that the safety profile of the axial resisting profile and ultimate moment is close to the value 1.

PENGARUH METODE PERLAKUAN DALAM PERAWATAN BETON TERHADAP KUAT TEKAN DAN DURABILITAS BETON Supriani, Fepy; Islam, Mukhlis
Inersia: Jurnal Teknik Sipil Vol. 9 No. 2 (2017)
Publisher : Universitas Bengkulu

Concrete strength is influenced by several variables, among others by its constituent material, mix design, workmanship, and curing. The objective of concrete curing is to maintain the concrete in certain conditions after the dismantling of the formwork hence the optimization of concrete strength can be achieved close to the designed strength. This study aims to determine the effect of concrete curing on its compressive strength. Designed concrete compressivestrength of 20 MPa with slump values of 60-100 mm to be used. The specimens are cube-shaped with 15 cm dimension. Concrete compressive strength tests were conducted at 28 days and 56 days of concrete age. The types of concrete curing consist of 9 variations, i.e., not treated, water immersed and water sprinkling. Optimum 28 days age of compressive strength of concrete obtained from specimens that immersed in fresh water, which was 31,3 MPa. The concretespecimens that were put outdoor without any curing and treatment generates second highest compressive strength value of 28.6 MPa. The 28 days age of concrete compressive strength values cured with water sprinkling with addition of burlap wrapping are still under the compressive strength of uncured concrete. Significant changes to the strength of cured concrete occurred at age of 56 days and uncured concrete strength decreased up to 19%. The optimum increase occurred in concrete cured with burlap sack wrapping and water sprinkling that was conducted routinely for 3 days by 27,84%. With increasing age (durability) the treated concrete has better strength.

ANALISIS KOLOM BETON BERTULANG PADA PENAMPANG PERSEGI BERLUBANG Nasution, Amrun; Islam, Mukhlis
Inersia: Jurnal Teknik Sipil Vol. 11 No. 1 (2019)
Publisher : Universitas Bengkulu

Installation of the pipe in the column (conduit) such as electrical and sanitary plumbing installations are found in the structure of reinforced concrete columns. This causes it to be a hollow column. The existence of holes cause a reduction in cross sectional area of the column and can result in reduced strength of a column. The purpose of this study was to know the power difference hollow concrete columns with concrete columns are not hollow and produce an analysis of the interaction in the form graphics axial force (Pn) and nominal torque (Mn). The analytical method developed by using square column spread sheet applications and use the stress-strain relationship hognestad. Analysis of the hollow square column in this study as many as 720 samples. This study used 300x300-600x600 mm dimensions with an increase of 100 mm. Quality concrete (f'c) used was 25-30 MPa to 2.5 MPa rise. Quality reinforcement (fy) used was 400 MPa and the ratio of the reinforcement taken from 1% -8% with an increase of 2% of the cross sectional area of the column, with the amount of reinforcement as much as 12-20 pieces of reinforcement to rise 4 pieces. Widely used hole that is 3% -7%, with an increase of 1%. The analysis showed a decrease in Pn-Mn hollow column to column was not perforated. The decrease Pn maximum of 7.20% in the area of hole 7% by eccentricity to d amounting to 8.01% and the maximum Mn decrease of 10.91% in the area of hole 7% by eccentricity to d amounting to 20.51%.

PENGARUH PEMANFAATAN ABU PECAHAN TERUMBU KARANG DAN ABU SEKAM PADI SEBAGAI PENGGANTI SEMEN TERHADAP KUAT TEKAN BETON Afrizal, Yuzuar; Ramahayati, Nuzhi; Islam, Mukhlis
Inersia: Jurnal Teknik Sipil Vol. 11 No. 2 (2019)
Publisher : Universitas Bengkulu

Portland cement is a relatively expensive type of cement when used on constructions requiring simple requirements. Local material utilization using ash fragments of coral reefs and rice husk ash is one of the solutions. The objectives of this study is to determine the value of concrete compressive strength in each variation of cement replacement used were 2.5%, 5%, 7.5% and 10%, each variation consists of 70% ash fragment of coral reefs and 30% rice husk ash from the volume of cement used. The cube specimen with a size of (15x15x15) cm as many as 20 specimen were prepared. Concrete mixture according to SNI 03-2834-2000 used 0.5 cement water ratio and 60-100 mm of slump. The result of the compressive strength of concrete variation every percentage increase has increased and decreased from the result of the normal concrete compressive strength of 368.24 kg/cm2. Maximum increase occurred in the concrete compressive strength variation 7.5% of 384.76 kg/cm2 and decreased on the concrete compressive strength variation 10% of 367.40 kg/cm2.

ANALISIS FAKTOR–FAKTOR YANG MEMPENGARUHI MASYARAKAT DALAM PENGEMBANGAN BANGUNAN RUMAH TIPE 36 (Studi Kasus Perumahan Surabaya Permai 4) Ugizaqiah, Olyvia; Supriani, Fepy; Islam, Mukhlis
Inersia: Jurnal Teknik Sipil Vol. 12 No. 2 (2020)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/ijts.12.2.75-82

Abstract The increase of population caused the needed of home provider service. Mostly the housing already has it’s own type of house. As time goes by home developing happened in order to fullfill people needs. This study aimed to examine the factors that effect home development and find out the dominant factor for T36 h0use. The study uses descriptive survey methods and use multiple linear regression analysis to analyzed. Questionnaire were distributes to 41 respondents who lived in Surabaya Permai 4 Housing with 90% trust level. Processing questionnaire data using SPSS 25 with test requirements analysis, namely the validity and reliability test. The results of this research indicate that money, structural security, safety and comfort, social and culture, resident conditions, building condition effect 90.4% for home development. The most dominant factor affecting home development is the money factor with a percentage of 27.3%. The other factors are structural security 17.7%, safety and comfort 14.1%, social and culture 12.6%, resident condition 12.2% and building condition 6.5%. Keywords: house, home development, dominant factor

PENGARUH PENAMBAHAN ABU SEKAM PADI TERHADAP KUAT TEKAN MORTAR Pascasari, Auliarizky; Wahyuni, Ade Sri; Islam, Mukhlis; Gunawan, Agustin; Afrizal, Yuzuar
Inersia: Jurnal Teknik Sipil Vol. 13 No. 2 (2021)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/ijts.13.2.84-88

The purpose of this research is to know the comparison of compressive strength mortar with additional material rice husk ash to normal mortar. Rice husk ash used has been burned at high temperatures above 400°C. The percentages of rice husk ash used are 6%, 9%, 12%, and 15% with 7 samples in each variations. The total of mortar cubes are 105 pieces sized 50mm x 50mm x 50mm. The range of initial flow values are used 105%-115% (SNI 03-6882-2002). The test specimen was immersed for 13, 20, and 27 days and mortar compressive strength test was conducted at the age of 14, 21, and 28 days. The highest compressive strength occurred at 9% variation with an average compressive strength value of 13,24 MPa, with a percentage increase of 10,15% from normal mortar. The lowest compressive strength occurred at 6% variation with an average compressive strength value of 11,22 MPa, with percentage decrease of 6,66% from normal mortar. The result shows that the use of rice husk ash with variation 9% and 12% produce higher compressive strength than normal mortar.

PENGARUH PENGGUNAAN ABU TERBANG (FLY ASH) SEBAGAI BAHAN TAMBAH TERHADAP KUAT TEKAN MORTAR Azizah, Titanya; Wahyuni, Ade Sri; Islam, Mukhlis; Gunawan, Agustin; Afrizal, Yuzuar
Inersia: Jurnal Teknik Sipil Vol. 14 No. 1 (2022)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/ijts.14.1.28-34

Mortar is material used in non-structural elements. The increasing of quality of the mortar can be obtained by adding other alternative materials to its constituent materials. The materials that have pozzolan characteristic can increase the compressive strength of the mortar. Fly ash has a pozzolan characteristic and contains silica so that it can be used as an additive to cement. This study aims to know the compressive strength of mortar by using fly ash as the additional material of cement with the ratio of cement to fine agregate were 1pc : 3ps on 14, 21, and 28 days. The sample of the mortar is a cuboid sized 50mm x 50mm x 50mm. The variations of fly ash used were 5%, 10%, 15%, and 20% with 7 samples in each variations. The range of initial flow values was between 105%-115% (SNI 03-6882-2002). The biggest compressive strength value for normal mortar is 11.15 MPa and the biggest compressive strength for the variation of mortar is 14.43 MPa at 15% variation at 28 days. The percentage increase in the compressive strength of the mortar is 29,48% from normal mortar.

PERILAKU DAN KETAHANAN STRUKTUR RUMAH VERNAKULAR DESA GUNUNG ALAM LEBONG TERHADAP GEMPA BUMI Bahri, Samsul; Hanif, muhammad Fauzan; Islam, Mukhlis; Prihatiningrum, atik
Inersia: Jurnal Teknik Sipil Vol. 14 No. 1 (2022)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/ijts.14.1.1-10

Lebong Regency is an earthquake-prone area in Bengkulu Province. This is because Lebong Regency is located adjacent to the Bukit Barisan Mountains which are included in the earthquake-prone zone and in the line of active faults. This research was conducted at Mr. Sonid’s vernacular house in Gunung Alam Village, Pelabai District, Lebong Regency to determine the behavior and the resistance of its structure.The behavior and resilience of the vernacular house structure against earthquakes is analyzed based on SNI 1726:2019. The analysis was carried out using SAP 2000 software to obtain the actual internal forces in the form of bending moment (M), shear force (V), and compressive force (P).The capacity of the wood structure was analyzed using the Load and Resistance Factor Design (LRFD) method which refers to SNI 7973:2013 to obtain adjusted moment capacity values (M'), adjusted compression capacity (P'), and adjusted shear capacity (V').The results of structural analysis of earthquakes produce the same actual internal forces in medium and soft soil conditions so that all structural elements of the vernacular house have the same structural behavior.Analysis of the capacity of the wooden structure results the adjusted internal forces of some structural elements which are smaller than the actual internal forces, so that the vernacular house structure is unable to withstand the forces that occur. However, based on the earthquake and its impact until this research was conducted, the condition of the vernacular house still stands strong without any damage to its structural elements.

FEASIBILITY STUDY PADA KANTOR BPJS KETENAGAKERJAAN CABANG BENGKULU Islam, Mukhlis
Inersia: Jurnal Teknik Sipil Vol. 14 No. 2 (2022)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/ijts.14.2.87-101

Abstrak Kantor BPJS Ketenagakerjaan Cabang Bengkulu dibangun pada tahun 2004 dengan luas tanah 1.847 m2 dan luas gedung 578 m2. Dalam eksistensinya, Kantor Cabang Bengkulu telah mengalami gempa bumi pada tanggal 12 september 2007 dengan kekuatan mencapai 7,9 skala richter yang mengakibatkan dinding kantor dan tembok samping pagar mengalami keretakan sehingga dilakukan rehabilitas bangunan Gedung Kantor Cabang Bengkulu pada tahun 2008. Sejak dibangun, telah terjadi beberapa kali pemutakhiran standar dan peraturan mengenai persyaratan ketahanan gempa untuk gedung serta struktur beton yang cenderung menjadi lebih ketat. Untuk itu pihak PBJS TK merasa perlu untuk melakukan evaluasi kelayakan bangunan kantor BPJS TK cabang Bengkulu untuk memastikan bangunan masih layak dan tindakan yang perlu dilakukan jika ternyata tidak layak. Hasil evaluasi menunjukkan beberapa aspek bangunan dalam kondisi tidak layak yaitu kondisi eksisting dinding penahan tanah di belakang gedung, mutu beton yang tidak konsisten, kuat tekan beton eksisting tidak memenuhi persyaratan beton terakhir, penulangan tidak memenuhi persyaratan beton terakhir, beberapa elemen struktur dalam kondisi tidak aman dibawah pengaruh beban gempa maksimum, serta di beberapa aspek belum memenuhi persyaratan K3 dan proteksi kebakaran. Kata kunci: Evaluasi Kelayakan Bangunan, Bangunan Tahan Gempa, K3 pada Bangunan, Proteksi Kebakaran.

ANALISIS STRUKTUR DENGAN DINDING PENGISI DAN TANPA DINDING PENGISI PADA GEDUNG BERTINGKAT TERHADAP PERILAKU DINAMIK DENGAN METODE TIME HISTORY CAHAYA, TIARA; Islam, Mukhlis; Afrizal, Yuzuar; Wahyuni, Ade Sri; Gunawan, Agustin
Inersia: Jurnal Teknik Sipil Vol. 15 No. 1 (2023)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/ijts.15.1.77-84

This study aims to compare structural modeling with the addition of wall elements and without walls with the help of SAP2000 software. The method used in this study is time history analysis using the San Fernando groundmotion data. Based on the modeling that has been done, the participation of the variance mass has reached 90% for structures with walls in mode 278 while without walls in mode 243. The addition of walls in this study resulted in a decrease in the drift value. The average percentage of settlement of each floor is 40.12% for the X direction and 30.26% for the Y direction. The addition of walls can also reduce the period value of the structure, where the structure with walls has a period value of 1.0804 seconds while the structure without walls is 1 ,2016 sec. Keywords: Building Structure, Infill Wall, Drift, Time History Analysis

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