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Triwardaya
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Humanities Civil Engineering, Building, Construction & Architecture Education Engineering Other

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PEMANFAATAN POLYURETHANE DENGAN VARIASI VOLUME SEBAGAI PERKUATAN STRUKTUR DINDING BATA RINGAN RUMAH PENDUDUK DI KECAMATAN MIJEN KOTA SEMARANG: PEMANFAATAN POLYURETHANE DENGAN VARIASI VOLUME SEBAGAI PERKUATAN STRUKTUR DINDING BATA RINGAN RUMAH PENDUDUK DI KECAMATAN MIJEN KOTA SEMARANG Widoanindyawati, Vemi; Triwardaya; Harprastanti, Primasiwi; Setiawan, Dedi Budi; Sismedi, Gud
Bangun Rekaprima Vol. 11 No. 1 (2025): April 2025
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v11i1.6504

Abstract

The vulnerability to earthquake hazards in Semarang City is still quite low. Many people have houses that are not yet standardized to the Indonesian National Standards (SNI). Mijen District, Semarang City, is one of the districts that is quite prone to earthquake hazards because of its location close to the source of the Kaligarang fault. Therefore, it is necessary to provide preventive measures and measures for community housing buildings. The house is an earthquake-resistant building and is able to withstand sudden ground movements. By building houses that comply with Indonesian National Standards, it is hoped that damage to the building will be minimized and there will be no loss of life. By using light building materials and strong adhesive between joints, it will increase the ability to withstand seismic loads in a building. In wall construction, you can apply light bricks with polyurethane adhesive because the load caused is relatively light. Apart from being able to strengthen the bond between each layer of brick properly, this adhesive is easy to apply. It is hoped that this adhesive material will be capable of gluing and creating a strong bond in the lightweight brick layers. Varying polyurethane volume is needed to determine the effective and efficient quantity of polyurethane to produce a strong bond. For this reason, "Using Polyurethane with Varying Volumes to Strengthen the Structure of Light Brick Walls of Residents' Houses in Mijen District, Semarang City" is very important as a community service step in presenting innovations that are easy to implement independently by residents in earthquake-prone areas.
PENGARUH PRELOADING TERHADAP LAMA WAKTU KONSOLIDASI PADA TAHAP PRECONSTRUCTION STUDI KASUS PESISIR KOTA SEMARANG: PENGARUH PRELOADING TERHADAP LAMA WAKTU KONSOLIDASI PADA TAHAP PRECONSTRUCTION STUDI KASUS PESISIR KOTA SEMARANG Widoanindyawati, Vemi; Lestari, Nor Puji; Triwardaya; Kusumastuti, Dianita Ratna; Marsudi; Amal, Andi Syaiful; Sulistiawati, Baiq Heny
Bangun Rekaprima Vol. 11 No. 1 (2025): April 2025
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v11i1.6532

Abstract

The problem of soft clay soil is currently one of the most worrying soil problems due to the increasing use of soft soil areas for construction needs. The main problem with soft clay soil is its nature which easily absorbs water but is difficult to release the water. The large amount of soft soil in the coastal area of Semarang City implies that in the construction process in the area, it is necessary to consider consolidation reduction. Soft clay soil takes a long time to reach 90% consolidation. This is because the permeability of soft clay soil is very small so that the process of dissipating water out is quite long. This dissipation process can be accelerated using engineering techniques, one of which is preloading. This process will further accelerate the consolidation process. This study was conducted to obtain the optimization of the embankment area against land subsidence on the coast of Semarang City using the numerical analysis method. From the research results, various variations were obtained for the area of embankment for a soil depth of 20 meters with a size of 30 x 30, the decline that occurred was 1.37 cm, a size of 40 x 40, the decline that occurred was 1.552 cm, a size of 50 x 50, the decline that occurred was 1.772 cm. While for the sea decline according to Steinbener
Co-Authors Andi Syaiful Amal Dianita Ratna Kusumastuti Harprastanti, Primasiwi Lestari, Nor Puji MARSUDI S.T., M.T., DEDI BUDI SETIAWAN Sismedi, Gud Sulistiawati, Baiq Heny Vemi Widoanindyawati