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All Journal Jurnal Ilmiah MITSU (Media Informasi Teknik Sipil Universitas Wiraraja) JOURNAL OF CIVIL ENGINEERING, BUILDING AND TRANSPORTATION Publikasi Riset Orientasi Teknik Sipil (Proteksi) Jurnal Rekayasa Infrastruktur Sipil Matriks Teknik Sipil Paulus Civil Engineering Journal Abdimas Indonesian Journal JURNAL ILMIAH TEKNIK INDUSTRI DAN INOVASI (JISI) Jurnal Teknik Sipil dan Perencanaan
Lalu Samsul Aswadi
Universitas Tidar
Religion Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Social Sciences Transportation

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STUDI EKSPERIMENTAL MODULUS OF RUPTURE DAN MODULUS OF ELASTICITY LAMINATED VENEER LUMBER KAYU SENGON Aswadi, Lalu Samsul; Yuwana, Dwi Sat Agus; Prawenti, Herlita
Jurnal Rekayasa Infrastruktur Sipil Vol 1, No 2 (2020): Jurnal Rekayasa Infrastruktur Sipil
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (28.273 KB) | DOI: 10.31002/.v1i2.3396

Abstract

Kayu sengon dengan nama ilmiah Paraserianthes falcataria yaitu suatu jenis kayu yang pertumbuhannya cepat tetapi kekuatannya kecil sehingga kayu jenis ini biasanya jarang digunakan untuk bahan struktur bangunan.. Salah satu cara untuk meningkatkan kekuatan kayu sengon yaitu dengan teknologi LVL (Laminated Veneer Lumber).Penelitian ini bertujuan untuk mendapatkan nilaiModulus of Rupture(MOR) dan Modulus of Elasticity(MOE) LVL kayu Sengon dari pengujian lentur secara eksperimental.Hasil penelitian ini diharapkan dapat memberikan sumbangan ilmiah untuk basis data sifat mekanika kayu Indonesia dan khususnya untuk perencanaan komponen struktur tekan dan lentur. Benda uji LVL kayu Sengon sebanyak 8 buah dengan dimensi 480 mm x 80 mm x 40 mm ditumpu di kedua ujungnya. Benda uji kemudian diberi beban lentur ditengah-tengah secara beangsur-angsur sampai benda uji runtuh. Kemudian dicatat berapa beban yang mampu ditahan oleh masing-masing benda uji. Dari hasil pengujian kuat lentur tersebut kemudian dihitung Modulus of Rupture(MOR) dan Modulus of Elasticity(MOE) LVL kayuSengon dari masing-masing benda uji.Dari pengujian didapatkan hasil MOR dari 8 benda uji berturut-turut yaitu 30,08 Mpa, 39,14 Mpa, 39,14 Mpa,33,96 Mpa, 35,90 Mpa, 38,17 Mpa, 39,78 Mpa dan 31,70 Mpa dengan nilai rata-rata MOR dari 8 bendauji adalah 35,98 Mpa. Hasil dari nilai MOE untuk 8 bendauji berturut-turut adalah 3436,36 Mpa, 3306,12 Mpa, 3306,12 Mpa, 3497,14 Mpa, 3469,88 Mpa, 3888 Mpa, 3353.23 Mpa dan 3351,72 Mpa dengan nilai rata-rata MOE dari 8 benda uji adalah3451,07 Mpa.
ANALISIS PERBEDAAN SIGNIFIKANSI PENGARUH INDIKATOR-INDIKATOR KUALITAS LAYANAN TERHADAP KEPERCAYAAN PENGGUNA JASA KONSTRUKSI Herlita Prawenti; Achmad Rafi’ud Darajat; Lalu Samsul Aswadi
Jurnal Rekayasa Infrastruktur Sipil Vol 1, No 2 (2020): Jurnal Rekayasa Infrastruktur Sipil
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (535.346 KB) | DOI: 10.31002/.v1i2.3390

Abstract

Adanya suatu pemahaman bahwa semakin banyaknya pesaing, semakin kritisnya rekanan/klien, semakin tipisnya prospek profit, dan perusahaan konstruksi semakin dituntut untuk dapat menjaga dan mempertahankan keberlangsungan perusahaannya. Indikator-indikator utama yang digunakan pada penelitian ini yaitu  dimensi dari Kualitas Layanan dan indikator tambahan lainnya yang diperoleh dari pengembangan penelitian yang telah dilakukan diIndonesia, sehingga mendapatkan indikator yang lebih komperhensif. Dari indikator tersebut dilakukan survei kepada sejumlah responden. Instrumen penilaian dalam penelitian ini menggunakan kuesioner tertutup dan terbuka yang memberikan  indikator-indikator Kualitas Layanan dalam skala tingkat signifikansi (skala 1-5) yang mempengaruhi kepercayaan Pengguna Jasa. Dari hasil survei tersebut, dilakukan pengolahan data dengan menggunakan analisis statistik deskriptif untuk dianalisis mengenai perbedaan yang signifikan antara persepsi Pemilik dan konsultan MK sebagai Pengguna Jasa Konstruksi.
STUDI EKSPERIMENTAL MODULUS OF RUPTURE DAN MODULUS OF ELASTICITY LAMINATED VENEER LUMBER KAYU SENGON Lalu samsul Aswadi; Dwi Sat Agus Yuwana; Herlita Prawenti
Jurnal Rekayasa Infrastruktur Sipil Vol 2, No 1 (2021): Jurnal Rekayasa Infrastruktur Sipil
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (602.829 KB) | DOI: 10.31002/.v1i2.3392

Abstract

Paraserianthes falcataria atau dikenal dengan kayu sengon merupakan spesies kayu yang cepat tumbuh tetapi memiliki kekuatan yang rendah sehingga penggunaannya dibatasi hanya untuk elemen non-struktural saja. Salah satu cara untuk meningkatkan kekuatan kayu sengon yaitu dengan teknologi LVL (Laminated Veneer Lumber).Penelitian ini bertujuan untuk mendapatkan nilai Modulus of Rupture (MOR) dan Modulus of Elasticity (MOE) LVL kayu Sengon dari pengujian lentur secara eksperimental. Hasil penelitian ini diharapkan dapat memberikan sumbangan ilmiah untuk basis data sifat mekanika kayu Indonesia dan khususnya untuk perencanaan komponen struktur tekan dan lentur. Benda uji LVL kayu Sengon sebanyak 8 buah dengan dimensi 480 mm x 80 mm x 40 mm ditumpu di kedua ujungnya. Benda uji kemudian diberi beban lentur ditengah-tengah secara beangsur-angsur sampai benda uji runtuh. Kemudian dicatat berapa beban yang mampu ditahan oleh masing-masing benda uji. Dari hasil pengujian kuat lentur tersebut kemudian dihitung Modulus of Rupture (MOR) dan Modulus of Elasticity (MOE) LVL kayuSengon dari masing-masing benda uji.Dari pengujian didapatkan hasil MOR dari 8 benda uji berturut-turut yaitu 30,08 Mpa, 39,14 Mpa, 39,14 Mpa, 33,96 Mpa,  35,90 Mpa, 38,17 Mpa, 39,78 Mpa dan 31,70 Mpa dengan nilai rata-rata MOR dari 8 benda uji adalah 35,98 Mpa.  Hasil dari nilai MOE untuk 8 benda uji berturut-turut adalah 3436,36 Mpa, 3306,12 Mpa, 3306,12 Mpa, 3497,14 Mpa, 3469,88 Mpa, 3888 Mpa, 3353.23 Mpa dan 3351,72 Mpa dengan nilai rata-rata MOE dari 8 benda uji adalah 3451,07 Mpa.
ANALISIS KEKUATAN LENTUR KAYU SENGON AKIBAT KONDISI TERENDAM AIR SUNGAI Naeni, Heni Faidatul; Arnandha, Yudhi; Aswadi, Lalu Samsul
Jurnal Ilmiah MITSU (Media Informasi Teknik Sipil Universitas Wiraraja) Vol 12 No 2 (2024): Jurnal Ilmiah MITSU
Publisher : Fakultas Teknik, Universitas Wiraraja

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24929/ft.v12i2.3471

Abstract

Soaking wood is often done by traditional communities, including the people of Jogotamu Hamlet, Loano Village, Purworejo Regency, to preserve wood to be used as construction materials such as battens and formwork. Testing the flexural strength of sengon wood beams, which are low grade wood, were immersed in river water to see the effect of the bending strength of sengon wood due to being submerged in river water. The main objective of this research is to determine the physical properties (water content, density, and specific gravity), Modulus of Rupture (MoR), and Modulus of Elasticity (MoE). Flexural strength testing of sengon beams measuring 760 mm x 50 mm x 50 mm with guidelines based on SNI-03-3959-1995 with variations without soaking, 7 days soaking, 14 days soaking, 21 days soaking, 28 days soaking, and 35 days soaking Flexural strength testing was carried out at the Structure Laboratory of the Civil Engineering Department, Faculty of Engineering, Tidar University, Magelang. The test results produced an average value of water content without soaking, soaking for 7 days, 14 days, 21 days, 28 days and 35 days respectively, namely 14.65%, 31.85%, 36.21%, 31.85%, 33.37%, and 32.84%. The average density values are respectively 0.40 gr/cm3, 0.57 gr/cm3, 0.66 gr/cm3, 0.60 gr/cm3, 0.64 gr/cm3, and 0.61 gr/ cm3. The average values of specific gravity are 0.35, 0.43, 0.48, 0.46, 0.48, and 0.46, respectively. The average Modulus of Rupture (MoR) values were 24.77 MPa, 23.82 MPa, 22.75 MPa, 23.86 MPa, 23.73 MPa, and 25.47 MPa, respectively. Meanwhile, the average Modulus of Elasticity (MoE) values are 3,495.20 MPa, 3,382.14 MPa, 3,893.05 MPa, 4,316.36 MPa, 1,689.34 MPa, 2,899.42 MPa. Based on Anova analysis, soaking sengon wood during this period resulted in the conclusion that there was no significant difference or no effect.
Pengaruh FAS Terhadap Kuat Tekan Beton Dari Agregat Sungai Krasak Aswadi, Lalu Samsul; Yuwana, Dwi Sat Agus
Abdimas Indonesian Journal Vol. 5 No. 1 (2025)
Publisher : Civiliza Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59525/aij.v5i1.633

Abstract

Concrete construction is widely used by the community, for example, building construction, bridge construction, port construction, girder construction, and others that require determining the quality of concrete. The use of concrete for protected and unprotected areas differs. In general, the community uses concrete construction for road hardening and for building their homes. In general, when mixing concrete, the water used during mixing tends to be free, without important rules, making it easy to work. This will affect the quality or grade of concrete. The research on the effect of water-cement ratio (W/C) on the compressive strength of concrete from Krasak river aggregates, as the main material that is currently widely available in the Krasak River, Pabelan River, and Kali Putih River. In these places, sand with various sizes and split or crushed stone from various stone crusher companies are available. This research follows the Indonesian National Standard (SNI) on the Selection of Concrete Mixtures for Normal Concrete, Heavy Concrete, and Mass Concrete. The concrete mixing is done with a volume ratio of 1pc:2ps:2split with six variations of W/C, namely 0.37, 0.46, 0.55, 0.61, 0.64, and 0.73. The sand and split materials are tested according to SNI, namely the testing of fine aggregate and coarse aggregate materials. Mix design is performed based on the data of fine and coarse aggregates. The test objects are made by mixing materials such as cement, sand, gravel, and water. The mixing is carried out by testing the fresh concrete or slump and making cylindrical test objects and soaking them for 28 days. Then, the compressive strength of the concrete is tested. The compressive strength test results show that the W/C ratios of 0.37, 0.46, 0.55, 0.61, 0.64, and 0.73 with slump values of 0, 3, 5, 8, 14, and 18 cm produce compressive strengths of 9.90, 13.75, 14.62, 20.18, 13.50, and 6.97 kg/cm2, respectively. From the test results, it can be seen that the best W/C ratio is 0.61 with a compressive strength of 20.18 kg/cm2.
The Effect of Compressive Strength of Concrete with Styrofoam Waste Cement Coating on Acid Solution and Water Permeability: Pengaruh Kuat Tekan Beton Dengan Coating Cement Limbah Styrofoam Terhadap Larutan Asam Dan Permeabilitas Air Sarjano, Belany Try Aji; Aswadi, Lalu Samsul; Yuwana, Dwi Sat Agus
PUBLIKASI RISET ORIENTASI TEKNIK SIPIL (PROTEKSI) Vol 7 No 1 (2025): Vol 7 No 1 (2025)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/proteksi.v7n1.p8-16

Abstract

This research analyze the effect of styrofoam cement coating as a protective layer on normal concrete in terms of physical quality and compressive strength when exposed to Natrium Sulfat acidic solution. Styrofoam-based cement coating is chosen due to water-resistant physical properties and its ability to reduce difficult-to-decompose waste. The method related to the effect of cement styrofoam coating as a liner with cylindrical concrete test objects measuring 15 cm in diameter and 30 cm in height and a quality of fc' 20 MPa, where its implementation is based on SNI 7656-2012. The cement coating used utilizes various mixture ratios of 0%, 40%, 50%, and 60% of the solvent weight in the form of Pertalite. The process of immersion in sodium sulfate acid solution, compressive strength testing, and permeability testing were conducted in the Laboratory, Universitas Tidar. The results indicate that the addition of styrofoam cement coating can reduce the corrosive impact of Natrium Sulfat acidic solution. The 60% styrofoam mixture variation showed the best results in three testing aspects: a post-curing compressive strength test value of 21.3621 MPa, a post-immersion in Natrium Sulfat acidic solution compressive strength test value of 20.7680 MPa, and a permeability test value of 7.03x10-9.
Evaluation of Parking Characteristics and Parking Demand with PTV Vissim 8.0 at Rejowinangun Market, Magelang: Evaluasi Karakteristik dan Kebutuhan Parkir Menggunakan PTV Vissim 8.0 di Pasar Rejowinangun Magelang Soebari, Hashifah Putri; Woro Partini Maryunani; Lalu Samsul Aswadi
PUBLIKASI RISET ORIENTASI TEKNIK SIPIL (PROTEKSI) Vol 7 No 1 (2025): Vol 7 No 1 (2025)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/proteksi.v7n1.p41-46

Abstract

Rejowinangun Market is  traditional market in Magelang City.  Volume of vehicles in the parking area is also expected to increase. Therefore, this study aims to evaluate the characteristics, layout arrangement, and parking needs in the Rejowinangun market to better understand the current situation in the parking area. Research was conducted using the cordon survey method and direct observation at 06.00-08.00 and 12.00-14.00 on three days.  The results indicate that the highest occupation of the parking area occurred of 1,468 motorcycles and 40 cars parked during the observation period. The number of parked vehicles at 489 motorcycles and 23 cars. The parking turnover rate at 3.231 and 3.778 for motorcycles and cars. Importantly, the parking index that the current parking area is overloaded with cars (index value of 115%), which is not the case for motorcycles (index value of 46%). Parking model with PTV Vissim shows the highest occupancy on the second floor, with values of 54.63% and 52.35% for motorcycles and cars. The highest level of parking block space (0.04%) was found in the motorcycle parking area on the second floor. The validity further shows that the parking model is valid and therefore the results of this study are reliable.
Pengaruh Fluktuasi Muka Air Tanah terhadap Parameter CPT ternormalisasi dan Klasifikasi Soil Behavior Type (SBT) Wahyu, Aswin; Kurniawan, Aswin Wahyu; Istiqomah, Hulfa; Aswadi, Lalu Samsul; Yuwana, Dwi Sat Agus
Paulus Civil Engineering Journal Vol. 8 No. 2 (2026): Paulus Civil Engineering Journal, Juni 2026
Publisher : Universitas Kristen Indonesia Paulus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/699t5t53

Abstract

Fluktuasi muka air tanah merupakan salah satu faktor yang mempengaruhi kondisi tegangan efektif tanah dan berpotensi memengaruhi interpretasi parameter geoteknik berbasis Cone Penetration Test (CPT). Penelitian ini bertujuan untuk menganalisis pengaruh fluktuasi muka air tanah terhadap nilai stress-normalized cone resistance ( ) serta implikasinya terhadap klasifikasi Soil Behavior Type (SBT). Data yang digunakan berasal dari tiga titik CPT (S-05, S-10, dan S-11) di Kota Magelang, dengan simulasi variasi muka air tanah pada kedalaman 1 m, 2 m, 3 m, dan 4 m. Analisis dilakukan melalui perhitungan tegangan vertikal efektif, normalisasi parameter CPT, serta evaluasi perubahan nilai dan klasifikasi SBT. Hasil penelitian menunjukkan bahwa fluktuasi muka air tanah berpengaruh signifikan terhadap nilai , dimana kondisi muka air tanah yang lebih dangkal menghasilkan nilai yang lebih besar akibat penurunan tegangan efektif. Persentase perubahan  mencapai hingga 181,56% pada kedalaman tertentu dan menunjukkan pola yang konsisten pada seluruh titik CPT. Meskipun demikian, perubahan nilai  tidak selalu diikuti oleh perubahan klasifikasi SBT yang signifikan pada seluruh kedalaman. Penelitian ini menegaskan pentingnya mempertimbangkan kondisi muka air tanah dalam interpretasi parameter CPT ternormalisasi dan analisis geoteknik.
Studi Perilaku Dinding Geser Pelat Baja Bergelombang dengan Penambahan Wall Opening akibat Beban Siklik Alif Agtif Riyanto; Lalu Samsul Aswadi; Dwi Sat Agus Yuwana
JOURNAL OF CIVIL ENGINEERING BUILDING AND TRANSPORTATION Vol. 9 No. 1 (2025): JCEBT MARET
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jcebt.v9i1.14250

Abstract

Corrugated Steel Plate Shear Wall (CSSW) is an effective solution to enhance the seismic resistance of steel building structures. The design and specification of CSSW need careful optimization to maximize its performance, particularly in reducing lateral forces during an earthquake. This study utilizes the Finite Element Method (FEM) with Abaqus software to assess the ductility and energy dissipation values of various CSSW specimens. The variations tested include plate thickness, plate width, and wave inclination angle, with each variation involving three specimens. A 10% wall opening area is added to evaluate its impact on structural performance. Cyclic loading is applied following the ATC-24 protocol (ATC, 1992). The results indicate that specimens CSSW 2, CSSW 5, and CSSW 8 show the highest ductility values, 29.15, with specifications of 10 mm plate thickness, 3 m plate width, and 45° wave inclination angle. The largest energy dissipation value was observed in CSSW-4, at 6101 kNm, with a 10 mm plate thickness, 1.5 m plate width, and 45° wave inclination angle. This study provides valuable insights for designing more efficient and optimized CSSW for earthquake-resistant steel building structures.
ANALISIS KINERJA STRUKTUR GEDUNG FT E.03 UNIVERSITAS TIDAR TERHADAP GAYA GESER DASAR SEISMIK DENGAN METODE DINAMIK RESPONS SPEKTRUM Fajar Setianto; Yudhi Arnandha; Lalu Samsul Aswadi
Matriks Teknik Sipil Vol 13, No 1 (2025): Juni
Publisher : Program Studi Teknik Sipil FT UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mateksi.v13i1.98923

Abstract

According to BMKG earthquakes that occurred in Indonesia in 2023 with a minimum magnitude of 5.0 with various depths of 243 times. This condition is due to the geographical location of Indonesia is located between three tectonic plates so prone to earthquakes. Therefore, preventive measures are needed to reduce the impact of earthquakes on the failure of building structures. Faculty Of Engineering Building E.03 Tidar University is planned for 2015 with earthquake resistance Planning Standards in accordance with SNI 1726:2012. The planning standard has been revised to SNI 1726: 2019. Therefore, re-analysis according to the latest standards is required to determine the safety of the structure. Analysis using dynamic spectral response method. The maximum deviation of the roof ring beam in the x direction is 49.52 mm and the y direction is 61.25 mm. The largest shear force in the x direction is 7113.99 kN and the y direction is 6971.90 kN. The structural performance level is immediate occupancy with a roof drift ratio in the x direction of 0.0024 and y direction of 0.0030. Faculty of Engineering Building E.03 Tidar University has the ability to withstand earthquake forces with no damage to the structure. Keywords: dynamic response spectrum; seismic base shear force; structural performance level
Co-Authors Achmad Rafi’ud Darajat Aisya Bhanuwati Alif Agtif Riyanto Anis Rakhmawati Bina Arumbinang Wajdi dwi sat agus yuwana Fajar Setianto Istiqomah, Hulfa Julian Putra Rukmana Kurniawan, Aswin Wahyu Muhammad Ilham Hafidhuddin Naeni, Heni Faidatul Reyhan Daffa Sarjano, Belany Try Aji Soebari, Hashifah Putri Wahyu, Aswin Woro Partini Maryunani Yudhi Arnandha yuwana, dwi sat agus