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This study analyzes noise levels caused by traffic activities and generator sets (genset) in the Semarang University environment. Measurements were conducted using descriptive analytical methods by comparing measurement results against noise quality standards according to KepmenLH No.48 of 1996. Data collection was carried out in November 2023 at three location points (in front of Building V, Sports Center, and USM gate) during morning (08.00-08.30), afternoon (12.30-13.00), and evening (17.30-18.00) on weekdays and weekends. Measurement results showed traffic noise levels on weekdays reached 88.3 dB in front of the Sports Center, 85.3 dB at Building V, and 82.1 dB at the USM gate. On weekends, the highest noise level reached 82 dB. Generator noise measurements in stationary conditions reached 108.4 dB and increased to 112.4 dB during loading. The highest vehicle volume occurred during weekday evenings, reaching 3,176 vehicles/hour. Research results indicate that noise levels in the campus environment are above the permitted threshold of 55 dB for educational areas. The study recommends the construction of noise barriers and evaluation of generator placement to reduce noise impact on campus activities.

Noise in educational environments can affect the effectiveness of teaching and learning processes. This study aims to analyze the impact of traffic noise on teaching and learning activities in Building V of Semarang University, located along the Soekarno-Hatta arterial road. The research method uses a qualitative descriptive approach by measuring noise levels using a Sound Level Meter on six floors of the building. Measurements were taken during active lecture hours with time intervals of 3 x 30 minutes. The results showed that noise levels on floors 1 to 3 were above the educational environment quality standard of 55 dB according to KepMenLH No. 48 of 1996. Meanwhile, on the 6th floor, the noise level averaged around 55 dB. Excessive noise makes it difficult for students to hear lecturers' explanations, reduces their ability to capture information, and decreases learning material retention. To address these issues, sound insulation installation, spatial planning improvements by designing room layouts farther from noise sources, vegetation planting, and lecture rescheduling to avoid peak traffic times are necessary.

Noise in libraries can disrupt the concentration and comfort of visitors who are reading or studying. Therefore, a tool is needed to detect noise and automatically issue warnings to maintain silence in the library environment. This research aims to design and develop a noise detection tool in libraries using Internet of Things (IoT) technology. The device consists of a sound sensor that detects noise levels and sends data to a cloud-based server for analysis. When the noise level exceeds a specified threshold, the tool provides warnings through visual indicators and notifications to the library staff. The prototype was tested in a library environment and was able to detect noise accurately and issue real-time alerts. The results showed that the device effectively reduced noise levels and improved the comfort of library visitors. With the implementation of IoT technology, this system can be accessed and monitored remotely, facilitating library management in maintaining a conducive environment.

The purpose of this service activity is to provide an increased understanding of the concept of noise and carbon emissions of motorized vehicles located on Golf Course Road. Traffic noise and carbon emissions are environmental problems that have an impact on public health. The method used is field observation by measuring the number of vehicles, types of vehicles, noise levels using a decibel meter, and estimating carbon emissions using an estimative approach based on the number of vehicles and the average carbon emissions of each type of vehicle. This service shows the importance of periodic monitoring of noise and air pollution as a basis for urban environmental policy making. This activity went well, so that it was able to provide an increase in the number of vehicles.

Noise can be defined as a sound or noise that can disturb comfort and health and can cause deafness. Noise that occurs continuously with high intensity can unconsciously affect the health of the Crew (ABK) who are on duty on the ship. Health problems can occur because the ABK are required to be in the ship's engine room which can last a very long time according to the route of the ship's voyage. This study aims to determine and analyze the noise in the engine room and accommodation room on the ferry. The data analysis technique used in this study is noise measurement and analysis of measurement data. The results of the study showed that there was 1 room on the MT. Suchaonugnum ship that did not meet the standards of the Indonesian Classification Bureau and MSC.337(91), including the engine control room. The highest noise source produced in the engine room is produced by the auxiliary engine. While in the lounge room, passenger accommodation room and VIP Room the highest sound source is produced by the sound system. The sound system that is always turned on when the ship is operating is one of the sources of noise that makes the noise level in the passenger accommodation room not in accordance with the MSC.337(91) standard because the sound pressure is too high. The noise level in the passenger accommodation space can be overcome by reducing the sound pressure on the sound system.

Construction work is one of the jobs that has various high risks for workers and people who are around it. These risks come from various sources, one of which is noise from various equipment and ongoing activities. One of the jobs that cause high noise in construction work is MEP (Mechanical Electrical Plumbing) work. Based on Permenaker Number 13 Year 2011, the Threshold Value (NAB) for noise that can be accepted by workers is 85 dBA for 8 hours a day. Based on the measurement of the construction of the flats, the MEP work in the form of Beam Separator Elevator Installation, Pipe Fabrication, Electrical Wiring Lighting Installation, as well as Welding and Grinding of Iron Pipe causes noise above the NAB. The highest noise comes from pipe fabrication in the form of iron pipe cutting activities using large grinding tools and bevel machines that produce noise of 107 dBA. From the Daily Noise Dose (DND) calculation, the noise generated from MEP work has a dangerous risk level for workers' hearing. Risk control efforts that can be done are preventive actions based on the K3 hierarchy in the form of administrative controls such as changing working hours or shifts and conducting safety talks before work is carried out. In addition, another preventive measure is the use of PPE such as ear plugs. Based on the calculation of the noise reduction level, the use of ear plugs has not reduced the noise level to reach the NAB, so it is recommended that workers in pipe fabrication work use ear muffs to reduce noise exposure.

This community service activity aims to increase public understanding of how to reduce the impact of noise and carbon emissions from motor vehicles. Noise and carbon emissions from motor vehicles are environmental problems that are increasing along with the growth in the number of vehicles in urban and rural areas. These impacts not only affect air quality, but also the physical and psychological health of the community. This community service activity aims to empower the community in reducing the impact of noise and carbon emissions from motor vehicles through education, training, and concrete actions based on community participation. The implementation methods include socialization of the impacts of noise and emissions, training on environmentally friendly vehicle maintenance, and campaigns promoting the use of alternative modes of transportation such as bicycles, walking, or public transportation. The results of the activity showed an increase in community knowledge and awareness of environmental issues and the formation of self-help groups that play an active role in campaigning for environmentally friendly behavior. With this program, the community is able to contribute to reducing noise and air pollution, while supporting the creation of a healthier and more sustainable environment.

Pelaksanaan proyek konstruksi ini pada Proyek Pembangunan Gedung Resto Cafe 5 Lantai akan membutuhkan pendekatan inovatif untuk menyelesaikan masalah konstruksi yang tidak sesuai. Oleh karena itu, penerapan mode konstruksi dapat membantu menyelesaikan konstruksi. Pondasi merupakan bagian bawah bangunan bangunan yang menahan dengan gaya-gaya beban atas. Pemilihan metode konstruksi pondasi mempunyai pengaruh yang signifikan terhadap keakuratan konstrusksi. Tanah juga memiliki perbedaan kondisi dengan rencana seperti, kelembaban tanah akibat hujan, tiang yang menimbulkan kebisingan, pencemaran udara, dan faktor lainnya. Pondasi harus diperhatikan untuk menjamin kestabilan terhadap gaya luar seperti berat bangunan sendiri, beban isi bangunan, tekanan angina, dan gempa bumi. Pondasi terdiri dua jenis yaitu pondasi dangkal dan pondasi dalam. Dalam proyek ini berdasarkan data yang diperoleh hasil sondir untuk struktur angunan 44 meter. Dan proyek ini menggunakan tiang pancang karena relatif, pengirimian yang signifikan. Dan pada proyek ini menggukan metode konstruksi tiang pancang yaitu metode jack-in-pile yang dapat mengurangi polusi suara lingkungan.