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Ros Anita Sidabutar
Universitas HKBP Nommensen
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Journal : Sprocket : Journal of Mechanical Engineering

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Alasan Penggunaan Material Bekas Pada Bangunan partahi lumbangaol; Ros Anita Sidabutar; Salomo Simanjuntak; Andre Damara Sinaga
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.v4i2.896

Abstract

This study aims to find out the reasons that encourage the reuse of used materials in buildings. The data collection method was carried out by means of a questionnaire survey and interviews with respondents involved in the use of used materials, especially used wood. Respondents consist of used material traders, used material users, building contractors, foremen and building construction contractors who are used material producers. The research was carried out at used building material sales centers in Medan City, which are usually located on Jalan Pahlawan, Medan Perjuangan District, Jalan BrigJen Katamso, Jalan Gagak Hitam, and Jalan Helvetia Raya. Overall there were 10 respondents who participated. This study concludes that the main reason for using used wood materials is related to the price difference between used materials and new materials. Even though the use of used goods has a positive impact on efforts to preserve the environment, environmental conservation considerations have not become an important consideration in the use of used materials in the city of Medan.
Korelasi Hambatan Konus Dengan California Bearing Ratio Lapangan Pada Tanah Lempung Ros Anita Sidabutar; Yetty Saragi; Jesika Situmorang
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.v4i2.917

Abstract

The bearing capacity of subgrade for pavement thickness planning needs is generally determined by carrying out CBR testing. The BCR test in this study will be carried out by field CBR tests (field CBR) using the results of the DCPT examination. Inspection with the DCPT tool produces soil bearing strength data to a depth of 90 cm below the subgrade. The results of this examination are expressed by the Penetrometer Scale Penetrability (SPP) and the Penetration Resistance Scale (SPR). Road construction, which is certain to continue, requires data on identification of soil types and CBR where such data is not always available. In fact, the correlation between CBR and conical tip resistance (qc) already exists. Rahardjo (1996) suggests that for clay, the correlation between qc and CBR is CBR = 0.5 qc. However, the correlation results come from an unknown area, which of course the soil structure and properties are likely to be different and therefore it is also common to find that the time available to design a road pavement layer foundation is very urgent. Meanwhile, to obtain more accurate design results, Qc and CBR data are needed. To provide this connection using Cone Penetration Test (CPT) data at 4 stations and using correlation from the initial soil state data, soil stratigraphy is needed from the segment that will receive the construction. In this study, the CBR value correlation from Rahardjo (1996) and the Novo SPT application was used to obtain the CBR value and then describe the stratigraphy of the soil in that segment. From the results of the CPT to the correlation and Novo SPT, the CBR value to a depth of 2.0 m has not reached 6%, meaning that in this segment, if road construction is to be carried out, it requires soil improvement to obtain a CBR of at least 6%.
Co-Authors Andre Damara Sinaga Humisar Pasaribu Jesika Situmorang Johan Oberlyn Simanjuntak Josua Marganda Simangunsong Lumbangaol, Partahi Maruli Pardede Resinanta Panjaitan Rido Parulian Simbolon Salomo Simanjuntak Sriyanti Sitorus Tiurma Elita Saragi Torang Hutabarat Yetty Riris Saragi Yetty Saragi