Yurisman Yurisman
Program Doktor Bidang Keahlian Rekayasa Struktur, Fakultas Teknik Sipil dan Lingkungan Institut Teknologi Bandung / Staf Pengajar Politeknik Negeri Padang, Kampus Politeknik Limau Manis Padang

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Kriteria Daktilitas Untuk Struktur Baja Yurisman, Yurisman; Novrial, Novrial
JURNAL R & B Vol 1, No 2 (2001)
Publisher : JURNAL R & B

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Abstract

The Aplication of capacity design principles in seismic analysis is based on occurrence of global plastic mechanismi, characterized by the presence sufficient number of plastic hinges. The assurance of a good structural behaviour requires the verification of rotation capacity of these plastic hinges, which must be greater than the requered rotation. The puepose Of this paper is to review the factor influencing the avaible and required ductilities. The main conclusion of paper is the necessity of some urgent changing in code provisions conceming ductility checking.
Rencana Anggaran Biaya Dengan Menggunakan Software Syofyan, Elvi Roza; Yurisman, Yurisman
JURNAL R & B Vol 4, No 1 (2004)
Publisher : JURNAL R & B

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Abstract

This paper explained about using winest in cost estimate a project construction. Cost estimate is a process to estimate cost, material, worker, and make time schedule. There are many software can be used for cost estimate a project construction like : Microsoft project, primavera, etc. But base on experience many engineer more prefer to use winest than other software because of easy, simple and familiar.
Analisa Perbandingan Antara Peraturan Perencaan Bangunan Baja Indonesia (PPBBI) 1987 dengan Konsep Load And Resistance Factor Design (LRFD) untuk Desain Portal Baja Sederhana Yurisman, Yurisman
JURNAL R & B Vol 3, No 2 (2003)
Publisher : JURNAL R & B

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This paper presents two basic concept in design of steel structure, they are allowabie stress design (ASD) and load and Resistance Factor Design (LRFD). These concept has been applied in simple frame analysis. Allowable stress design used to Indonesian steel code that is PPBBI 1987, while LRFD will use in new Indonesian steel code : Result of analysis indicate that there are some difference between allowable stress concept especially in the case of loading. In LRFD concept there are a lot of load factor while in ASD concept only recognized safety factor. But LRFD concept more rational than ASD concept.
Gerusan Kaki Akibat Gelombang Pecah Pada Struktur Impermeable Sloping Wall Dalrino, Dalrino; Yurisman, Yurisman; Syofyan, Elvi Roza
REKAYASA SIPIL Vol 7, No 2 (2011)
Publisher : REKAYASA SIPIL

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Toe scour is one of phenomenon that frequently experienced by coastal structures and was realized as the causative factor to structure failure. When the structure was placed at coastal environment, existence of that structure will affecting flow pattern at area, one of them is the breaking wave event at around toe area. When breaking wave happened, energy dissipation caused by breaking process compensated in the form of vortex and improvement of flow intensity that have ability to moving bed material from its origin position of rest around the toe. This Research was focused for the breaking wave condition that producing local scouring at toe structure. Testing variable consists of wave height (H ), wave period (T) and water depth at toe (ds). The characteristic of structure was impermeable sloping wall. Physical Modeling was conducted at wave flume with 40 m length, 0.6 m width and 1.1 m height in Balai Hidraulika and Geoteknik Keairan (BHGK) PUSAIR, Bandung. Analysis of the result showed that improvement of toe scour was affected by breaking wave improvement, bed agitation caused by breaking process, down rush flow velocity, decreasing of water depth at toe and increasing of wave length
Tinjauan Kelayakan Gedung Pasar Inpres IV Kodya Padang Pasca Gempa Yurisman, Yurisman; Syofyan, Elvi Roza
POLI REKAYASA Vol 8, No 1 (2012)
Publisher : POLI REKAYASA

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This paper contains the results of an examination of the feasibility of building Inpres IV Market post earthquake in Padang on September 30, 2009.Based on data BMG, the earthquake occurred at 5:16:23 pm , the depth of 776 km with a magnitude of 7.9 Richter scale, positioned at 57 km southwest of Pariaman accompanied several aftershocks which also has a large enough magnitude scale. The Building of Inpres IV market is located in the city of Padang, West Sumatra Province was built in 1979.The upper structure of building Inpres IV Market is an open two-story frame structure made ​​of reinforced concrete. At this time, the building suffered damage caused by the earthquake. The purpose of the inspection is to obtain field data such as building configuration, structural elements that were damaged after the earthquake and material data and sampling for laboratory testing. in addition to the purpose of this inspection is also to provide technical advice on the level of reliability of the present building structure (existing) and provide recommendations for improvement and strengthening of the structure of the building is required to be able to function again. The analysis showed unsafe structures to withstand seismic forces (2nd floor structure), while in terms of the feasibility function is also not feasible. Suggested should Inpres market structure IV rebuilt in accordance with the conditions of necessity now.
Analisis Variabel-Variabel Risiko pada Pelaksanaan Proyek Konstruksi Jalan Hidayati, Rahmi; Natalia, Monika; Adibroto, Fauna; Mafriyal, Mafriyal; yurisman, yurisman; Saskia, Rizkina
Jurnal Ilmiah Rekayasa Sipil Vol 14 No 2 (2017): Edisi Oktober 2017
Publisher : Politeknik Negeri Padang

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This research aims to identify the risk variables that ever occurred while executing of road construction project. In addition, it is to identify how significant and how big the influence of risk variables to the articulation of project execution processes of a road construction project, based on questionnaire that distributed to 30 questionnaires who are project managers and site managers on contractors of road construction project.  From the research data, there were identified 14 risk variables with 84 risk sub-variables on execution of road construction project. Those 14 risk variables were natural, social, politic, economic, law, occupational safety and health, managerial, technical, cultural, logistic, condition around construction site, design and technology, labor, and contractual variables. From the data analysis by using SPSS version 16, obtained there were 14 risk sub-variables which became the most influential sub-variables (indicators) to the road construction project. All sub-variables on the questionnaire are valid and reliable. The results of this research is expected to be considered for all parties involved in the construction project to pay more attention to risk variables during the execution of road construction project.
DOMESTIKASI DAN PEMATANGAN GONAD IKAN TAPAH (Wallago sp) DARI PERAIRAN SUNGAI KAMPAR, RIAU Yurisman, Yurisman; Sukendi, Sukendi; Putra, Ridwan Manda
126-4265 Vol 38, No 01 (2010)
Publisher : Jurnal Terubuk

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A study aims to find out a domestication and gonad maturationtechnique of Wallago sp captured in the Kampar River, Riau has benn conductedon May to Nopember 2009. Fish samples were kept in 1 x 2 x 1.5 m cages, 6fishes/cages. The fishes were treated with three types of food. Results shown thatWallago domestication can be conducted by rearing the fish for 4 weeks. Theproper food for the fishes are sinking pellet 888-S (4) (P3), floating pellet CPPP781 (P2), and floating pellet T 79 – 3P (PI). The total growth rate , total lengthand daily growth rate of treated fish are 647.77 gr; 9.3933 cm and 0.320 % for P3;426.67 gr; 6.8367 cm and 0.226 % for P2 and 353.34 gr; 6.00 cm and 0.1911 %for P1. However, there are only 1st and 2nd gonad maturity level obtained in thetreated fishes. Survival rate of the fishes in 100 %.
PENGARUH KOMBINASI PENYUNTIKAN OVAPRIM DAN PROSTAGLANDIN F2 α (PGF2 α) TERHADAP DAYA RANGSANG OVULASI DAN KUALITAS TELUR IKAN MOTAN (Thynnicthys thynnoides Blkr) Sukendi, Sukendi; Putra, Ridwan Manda; Yurisman, Yurisman
126-4265 Vol 38, No 02 (2010)
Publisher : Jurnal Terubuk

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Abstract

The experiment were conducted to study the effect of ovaprim danprostaglandin F2α (PGF2α) combination on inducing ovulation and egg quality ofThynnicthys thynnoides Blkr. The experiment used five treatments as following :A1 = 50 % ovaprim + 50 % PGF2 α (0.35 ml/kg of body weight + 1500 μg/kg ofbody weight), A2 = 75 % ovaprim + 25 % PGF2 α (0.525 ml/kg of body weight +750 μg/kg of body weight), A3 = 25 % ovaprim + 75 % PGF2 α (0.175 ml/kg ofbody weight + 2250 μg/kg of body weight, A4 = 100 % ovaprim (0.7 ml/kg ofbody weight) and A5 = 100 % PGF2 α (3000 μg/kg of body weight). Thetreatments affected on inducing ovulation and egg quality. The best results wereabtimes from treatment A1 (0.35 ml/kg of body weight + 1500 μg/kg of bodyweight) with average values : latent period of 6.08 hours, number of ovulated eggswere 16308, egg diameter defference of 0.23 mm and gonad maturationdefference of 20 %.
PENGARUH KOMBINASI PENYUNTIKAN OVAPRIM DAN PGF2 α TERHADAP VOLUME SEMEN DAN KUALITAS SPERMA IKAN SELAIS (Ompok hypophthalmus) Putra, Ridwan Manda; Sukendi, Sukendi; Yurisman, Yurisman
126-4265 Vol 39, No 02 (2011)
Publisher : Jurnal Terubuk

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Abstract

This research aims to understand the effect of dosages combination ofmixed ovaprim and PGF2 α injection toward volume and quality of semen ofOmpok hypophthalmus. There were 5 treatments applied, namely A1 = 50 %ovaprim + 50 % PGF2 α/kg body weight (BW), A2 = 75 % ovaprim + 25 % PGF2α/kg BW, A3 = 25 % ovaprim + 75 % PGF2 α/kg BW, A4 = 100 % ovaprim /kgBW and A5 = 100 % PGF2 α / BW. The best combination of ovaprim and PGF2α for male fish was the A4= 100 % ovaprim (0,9 ml ovaprim/kg BW). Theaverage of semen volume produced was 0,87 ml, sperm concentration was 18,43x 10 9/ml, sperm viability was 88,67 % and sperm motility was 86,0 %.
KEBERHASILAN PEMIJAHAN SEMI ALAMI IKAN SEPAT MUTIARA (Trichogaster leeri Blkr) DALAM MEMPRODUKSI BENIH Sukendi, Sukendi; Putra, Ridwan Manda; Yurisman, Yurisman
126-4265 Vol 40, No 2 (2012)
Publisher : Jurnal Terubuk

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Abstract

This Research aims to determine the success of the semi-natural spawningin mosaic gouramy (Trichogaster leeri Blkr) by giving different substrates on thecontainer spawning. a pair of mosaic gouramy that have matured gonadscombined at the aquarium spawning that has been equiped with running watersystems. Treatments given were different substrates at the aquarium, P1 = thewater hyacinth substrate, P2 = hydrilla substrate, P3 = the smoothed rafia ropesubstrate. Each treatment carried out repeated three times to obtain 9 units trial.Parameters measured were spawning time, amount of eggs spawned, the value offertilization and egg hatchability values. The results showed that the besttreatment is the treatment P2 (hydrilla substrate) produces the shortest duringspawning time 49.33 hours, amount of eggs spawned 195 eggs, fertility value of71.93% and 60.09% egg hatchability.Keywords: Trichogaster leeri, spawning time, amount of eggs spawned, valueof fertilization and egg hatchability values