Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

p-Index From 2019 - 2024

1.244

P-Index

This Author published in this journals

All Journal Sprocket : Journal of Mechanical Engineering Jurnal Visi Eksakta

Yetty Riris Saragi

Universitas HKBP Nommensen

Author-ID : 3321406

Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Neuroscience Public Health

Published : 8 Documents Claim Missing Document

Claim Missing Document

Articles

ANALISIS DAN PERENCANAAN SISTEM DRAINASE JALAN PELITA 1 KECAMATAN MEDAN PERJUANGAN KOTA MEDAN Tiurma Elita Saragi; Yetty Riris Saragi; Eben Oktavianus Zai; Masati Harefa
Jurnal Visi Eksakta Vol. 2 No. 1 (2021): Jurnal Visi Eksakta : Edisi Januari
Publisher : LPPM Universitas HKBP Nommensen

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (720.994 KB)

The occurrence of flooding on Jln.Pelita 1, Medan Perjuangan District in Medan City was caused by the inability of the existing drainage channel to accommodate direct runoff and blockage of drainage channels by garbage.The hydrological analysis uses maximum rainfall data for the last 10 years, then calculations are carried out that aim to calculate the planned discharge using the rational method. The area of the Medan Perjuangan sub-district is 0.2475 Km2 with hydraulics analysis carried out to calculate the discharge capacity of the drainage channel using the Continuity formula and the Manning formula, after which the appropriate system and dimensions are planned. With a ketchment area of Medan Perjuangan sub-district 0.2475 km2, the calculation of drainage planning using the Gumbel Method of planned rainfall for a return period of ±10 years, with the largest discharge on the combined section of the primary canal and the Kemiling area. Then it was found that the flood height in the research area was as high as 10-20 cm and because of the existing dimensions it was not able to accommodate the design discharge. Thus, the appropriate channel dimensions are planned using a shaped cross section so that the design discharge (Qr) > channel discharge (Qs).

ANALISIS GEOGRID SEBAGAI TULANGAN PADA DINDING PENAHAN TANAH Johan Oberlyn Simanjuntak; Bartholomeus; Yetty Riris Saragi; Humisar Pasaribu; Arnita Silaban
Jurnal Visi Eksakta Vol. 2 No. 1 (2021): Jurnal Visi Eksakta : Edisi Januari
Publisher : LPPM Universitas HKBP Nommensen

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (474.129 KB)

The soil reinforcement system or reinforced earth was first introduced by Vidal in 1969. In addition, soil reinforcement has been applied in the construction of dams, embankments, raft foundations and supporting structures for ports and others. With the same concept as reinforced concrete, the reinforcement in the soil is in the form of sheet reinforcement, namely the geogrid relies on its high tensile strength. As concrete resists compression, reinforcement resists tension, so reinforcement in soil is useful for forming composite materials that work together to withstand the loads acting on construction, in this case the construction of retaining walls. In this study, a retaining wall will be analyzed in the form of an arrangement of concrete blocks as high as 6 meters with a foundation width of 2.5 meters and a thickness of 1 meter. On the soil side of the embankment, an analysis will be carried out with and without using a geogrid as reinforcement, where in the analysis of retaining walls with a geogrid several different configurations will be used for each layer thickness of the embankment (SV). The type of embankment soil used is granular soil (cohesiveless) with varying shear angles, f1 = 250, f2 = 300, f3 = 350, and f4 = 400. At the top of the embankment, there are pavement loads and traffic loads. of 15 kN/m. In this study, the retaining wall is planned to be able to withstand the loads acting on it, both from the outside and from the internal. Furthermore, as a comparison of results, to analyze or check the landslide field and stability for embankments using a geogrid and without geogrid, the Finite Element (OptumG2 for academics) method is used. Based on the analysis that has been done, it is found that the denser the geogrid reinforcement used in retaining walls, the higher the safety factor. The shear angle of a soil greatly affects the length of the geogrid. In addition, the smaller the shear angle, the higher the maximum stress value (Tmax) on the geogrid.

EVALUASI PERKERASAN JALAN KAKU (RIGID PAVEMENT) PADA JALAN SM RAJA MEDAN DENGAN METODE BINA MARGA Ros Anita Sidabutar; Yetty Riris Saragi; Humisar Pasaribu; Maruli Pardede; Torang Hutabarat
Jurnal Visi Eksakta Vol. 2 No. 2 (2021): Jurnal Visi Eksakta : Edisi Juli
Publisher : LPPM Universitas HKBP Nommensen

axle vehicles with the aim of shortening the distance and travel time from one place to another, as well as an infrastruture that is needed to support development. The design of the Sisingamangaraja – Lubuk Pakam road pavement consisting of a cement concrete slab as a foundation layer and a foundation laver above the subgrade. The purpose of this study was to evaluate the thickness of the pavement using the Highways Method. The research method used is the secondary data collection method. The data collected include traffic data, concrete data, soil data, vehicle axle free data, CBR modulus of subgrade. Plaanning the thickness of the road pavement concrete slab using the Highways Method obtained 300 mm. A planner is expected to have “felling engineering” supported by extensice knowledge and experience gained in the field.

PEMILIHAN ALTERNATIF SUMBER AIR BAKU DI KABUPATEN KARO Salomo Simanjuntak; Yetty Riris Saragi; Johan Oberlyn Simanjuntak; Humisar Pasaribu; Ricki A H Sianipar
Jurnal Visi Eksakta Vol. 2 No. 2 (2021): Jurnal Visi Eksakta : Edisi Juli
Publisher : LPPM Universitas HKBP Nommensen

Clean water is a primary need for humans in every country. The availability of clean water must be guaranteed in time, quantity and quality. The need for water for both domestic and non-domestic needs continues to increase from year to year. To meet the needs of clean water, the people of Karo Regency need clean water sources that are suitable for drinking. Water resources are water discharge and population for water distribution. In finding the amount of water demand, an analysis of the population and analysis of clean water production is carried out. Determining the need for clean water and the population in Karo Regency uses the Geometry method which this method shows the largest population growth so that it can be planned for clean water needs until 2027. Based on the results of the projected population plus the number of water needs in 2027 as many as 491,444 people, the required water discharge is 907,799 l/s while the current production capacity is 14,744.831 l/s, so the additional capacity needed is 0.01003 m3/s. Implementation in the construction of clean water facilities must be adjusted to the level of social, cultural, and economic conditions of the community.

SIFAT DAN KARAKTERISTIK CAMPURAN BETON MENGGUNAKAN BATU PECAH DAN BATU GULI DARI SUNGAI BINJAI Johan Oberlyn Simanjuntak; Ros Anita Sidabutar; Humisar Pasaribu; Yetty Riris R Saragi; Sriyanti Sitorus
Jurnal Visi Eksakta Vol. 2 No. 2 (2021): Jurnal Visi Eksakta : Edisi Juli
Publisher : LPPM Universitas HKBP Nommensen

Concrete is a construction material consisting of a mixture of cement, aggregate, water and with or without admixture if needed. Coarse aggregate and fine aggregate serve as the main filler of concrete as well as reinforcement, while the cement and water mixtured serves as a binder between materials. To find out and study the behavior of each of these concrete constituents, it is necessary to know the characteristics of the materials made as constituents of the concrete. This study was conducted with the aim of comparing the most optimum type of coarse aggregate used and the comparison of the use of cement for coarse aggregate of crushed stone and coarse aggregate of gully originating from North Sumatera area, namely from the Wampu River in Binjai City as a concrete mixture to see its effect on compressive strength of concrete at the same concrete characteristics namely f’c 25 MPa. The results of the normal concrete mix design are obtained by using coarse aggregate of crushed stone and coarse aggregate of boulder in different amounts of cement. The coarse aggregate of crushed stone requires more cement with the amount of cement 411.1 kg/m3 than the coarse aggregate of gum with the amount of cement 388.9 kg/cm3.

Pengamatan Atas Daerah Interface Pada Cladding Material Stainless Steel Terhadap Baja Karbon Rendah Secara Metalografi dan Uji Keras Yohanes Hutahaean; Sahat Mauli Lubis; Charles Manurung; Salomo Simanjuntak; Yetty R Saragi
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 2 No 2 (2021): Edisi Februari 2021
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Low carbon steel metal is a type of steel that has poor corrosion resistance. For that it is necessary to protect against corrosion through a coating process. In this case the coating is carried out using solid metal and is known as cladding. In this cladding process using another metal as a coating medium, namely stainless steel, the specimen will be given additional deformation from the outside in the form of pressure and the heating process is carried out above the recrystallization temperature (950oC) then cooled slowly in free air. The heating process of the specimens was carried out with three temperature variations, namely 750oC, 850oC and 950oC with a holding time of 60 minutes, from the research results obtained that the specimens and the highest temperature, 950 oC, had better metal bonds compared to specimens at temperatures of 750 and 850oC with hardness values. average 227.96 VHN.

Analisa Karakteristik Getaran Pada Mesin Asphalt Mixing Plant Tipe Apollo ANP- 1500 Berdasarkan Kapasitas Pembuatan Aspal Jalan Pada Daerah Horizontal, Vertikal Dan Longitudinal Berdasarkan Time Domain Suriady Sihombing; Wilson Nababan; Ros Anita Sidabutar; Yetty Riris Saragi; Partahi Lumbangaol; Salomo Simanjuntak
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 3 No 1 (2021): Edisi Agustus 2021
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Asphalt mixing plant machine is a tool used to process several materials into road asphalt, where it is necessary to know how to analyze the vibration characteristics of the asphalt mixing plant machine based on the capacity of making asphalt road in horizontal, vertical and longitudinal areas based on the time domain. The research method is carried out by collecting data on the amount of deviation, speed and acceleration that arise due to the processing of several materials so as to produce road asphalt based on differences in the capacity of different asphalt processed. Based on the measurement results, it is found that the highest vibration occurs at the asphalt mixing plant machine seat for a capacity of 60 tons/hour where the magnitude of the deviation is 0.222 mm in the horizontal direction at 100 seconds, the largest velocity is 11.99 mm/s horizontally in the second 40 mm/s and the largest acceleration is 369.7 mm/s2 in the horizontal direction of the 20th second. According to the ISO IS 2372 standard, the vibration of the Apollo ANP-1500 asphalt mixing plant machine enters class IV with a generator capacity above 75 KW, to be more precise (150KVA = 120KW). Then it can be analyzed that the generator vibration falls into the category of "vibration within tolerance limits and is only operated for a limited time" where the highest speed is 11.99 mm/s.

Korelasi Nilai Hambatan Konus Terhadap Parameter Rembesan Dalam Aplikasinya Pada Dinding Penahan Tanah Yetty Saragi; Riski Bernandus; Ros Anita Sidabutar
SPROCKET JOURNAL OF MECHANICAL ENGINEERING Vol 4 No 2 (2023): Edisi Februari 2023
Publisher : Program Studi Teknik Mesin, Universitas HKBP Nommensen, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36655/sprocket.v4i2.916

Retaining walls are one of the constructions that are often found as slope safety walls which function to withstand lateral forces from the soil behind them. Retaining walls must be able to withstand shear, overturn, bearing capacity and meet the provisions of SNI 8460 2017 Geotechnical Design Requirements. The retaining wall must also be able to withstand water seepage into the soil behind it so it is necessary to know the amount of the seepage coefficient (k). The value of the seepage coefficient (k) can be determined from the Constant Head and Falling Head laboratory tests as well as by using the correlation from the results of the CPT Cone Penetration Test (which was used in this study). The CPT test was carried out at 4 stations that had experienced slope failure. Furthermore, this study designed a retaining wall in the landslide area by taking into account the magnitude of the seepage coefficient (k). From the four CPT points, the seepage coefficient values were obtained k1 = 1.06E-05 cm/sec, k2 = 5.79E-06 cm/sec, k3 = 6.77E-06 cm/sec and k4 = 6.46E-06 cm/sec. Taking into account the presence of water seepage behind the retaining wall, it is obtained that FK 1.65 still does not meet FK under conditions of high levels of uncertainty and large repair costs (FK requirements > 2.0 according to SNI 8460 2017). From this study, it was found that by calculating the seepage coefficient (k), the FK value was not sufficient and it was suggested that in its implementation, efforts to compact the soil layer by layer behind the wall were needed so that the soil behind the wall was quite dense.

Co-Authors Arnita Silaban Bartholomeus Charles Manurung Eben Oktavianus Zai Humisar Pasaribu Johan Oberlyn Simanjuntak Lumbangaol, Partahi Maruli Pardede Masati Harefa Ricki A H Sianipar Riski Bernandus Ros Anita Sidabutar Ros Anita Sidabutar Ros Anita Sidabutar Sahat Mauli Lubis Salomo Simanjuntak Salomo Simanjuntak Sriyanti Sitorus Suriady Sihombing Tiurma Elita Saragi Torang Hutabarat Wilson Nababan Yohanes Hutahaean

Title

Found 8 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 8 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 8 Documents
Search