Effects of Railway Noise on Residents’ in A Residential Area

Population growth in Depok City is large and not in accordance with development land causes many residents’ to build houses with conditions <5 meters from the line of Electric Rail Train or Kereta Rel Listrik (KRL); this causes changes in the quality of the environment, including noise. The objective of this study is to determine the noise level, and the results will be compared with the standard noise level of the residential area; also, to find the influence of noise on residents’. This research was conducted in the area of ​​Rawa Geni Raya Street, 1st Neighborhood, Ratu Jaya Urban Village, Depok City. Noise measurements were carried out at 5-points using a simple method with a noise level measuring instrument (SLM). At one time, the measurement was taken for 10 minutes with a reading time of every 5 seconds. The questionnaire was measured using a Purposive Random Sampling technique, and the number of samples was calculated using the Slovin formula. The results of this study indicate that the 5-point noise level exceeds the recommended threshold according to KEPMEN LH 48 of 1996 and PERMENKES 718/1987 at 55 dB(A). The largest value for the 24-hour noise level (LSM) is at point 1, which is 5 m from the KRL line. The noise level on the weekday is 75.32 dB(A) and 74.24 dB(A) on weekends. According to PERMENKES No 718/1987, the location of point 1 should be included in Area D as an industrial zone, plant, railway station, and bus terminal. The results of questionnaires by 34 respondents showed that the noise generated by KRL was noisy and the majority of respondents agreed the noise affected the comfort level; in terms of health, respondents agreed KRL noise caused sleep disturbances and hearing loss.

Evaluation of WWTP with Activated Sludge Technology Combined with Microorganism Biofilters in IMERI Building

The regulations said that all domestic wastewater first should be treated before being discharged into public drainages. Therefore, IMERI building, as a research and education building located in the Faculty of Medicine, Universitas Indonesia, applies a wastewater management system using activated sludge technology combined with microorganism biofilters. This system is expected to treat the waste generated inside the building. It reprocesses become recycled water and partially discharged into city drainages based on the quality standard and maintenance applied during the operation. By collecting and evaluating primary and secondary data from system planning and routine maintenance results, we assess all performance of the WWTP system. Moreover, this system runs well and has all indicators of effluent categorizes safe. However, routine maintenance and the treatment process with chlorination and tighter monitoring should be taken seriously to keep the whole system's performance.

Effect of Dolomite Lime on Soil Matric Suction

The most fundamental of unsaturated soil is matric suction parameter. Matric suction in unsaturated soils plays an important role in controlling physical and mechanical properties. This parameter can influence some other important parameters of soil, such as effective stress, shear strength, swelling pressure, etc. Investigation of matric suction was performed on Ayer Hitam soil, at Batu Pahat District, Johor, Malaysia. Field monitoring works were conducted with and without dolomite treatment at the slopes of Ayer Hitam acidic soil. Field testing used some devices to find out the behavior of matric suction during the rainy session. The result shows that the soil matric suction with dolomite treatment is larger than without treatment and matric suction has a significant difference around 20 – 50 kPa. Enhancement of acidity from the dolomite treatment was not only decreasing pores size caused by the alternating of the microstructure of soil but also leading to increasing the matric suction. The treatment of dolomite material is able to control matric suction and increase the stability of slope acidic Ayer Hitam soil.

Noise Impact of Southgate Phase-2 Construction Project to the Settlement at Perumahan Tanjung Mas, Tanjung Barat

Construction activities can increase noise that gives an impact on the people who live nearby. The impact of noise can cause psychological and physiological disorders. The purpose of this research is to analyze the effects of the noise level of the Southgate Phase-2 project for citizen activities at PerumahanTanjung Mas, Tanjung Barat. It is based on regulatory standards in KEPMEN LH no. 48 of 1996, KEPGUB DKI Jakarta no. 551 of 2001, and the LNP standard according to the US Department of Housing and Urban Development. The methods are doing observation and survey by using a questionnaire to find out the project situation and the noise level produced by using a sound level meter measuring instrument. The result shows that people feel discomfort from the noise of the project, especially at night. Most of the noise measurement result exceeds the noise quality standard and its effects up to 50 meters away from the noise source. The point which is about 5 meters away from the noise source is 63.73 dB (A) and point which is about 50 meters away from the noise source is 59.89 dB (A). Based on the results of the regression equation shows that houses within 120 meters of the project impacted by the noise that exceeds the noise quality standards for the residential area. The most complaints given by people of PerumahanTanjung Mas were feeling discomfort in daily activities (79%), and sleeping trouble (60%).

Stakeholders Awareness of Safety Leadership Through Construction Safety Management System in Indonesia

Construction workplace safety has become serious issues among global companies. Improvement on occupational safety and health has been carried out. However, construction still becomes a sector with the highest accident rate. Particularly in Indonesia, construction contributes to 32% of accident rate followed by transportation, forestry, and mining. Main driver to improve safety performance is safety leadership as the frontline part of Construction Safety Management System (CSMS). Since it is a non-technical aspect, stakeholders’ awareness is doubtful. Therefore, this study aims to describe Indonesia construction stakeholders’ awareness of safety leadership as part of CSMS. Questionnaire was distributed to 693 respondents comprises of government, planners, consultants, private contractors, and State-Owned Enterprise (SOE) contractors. The result was analyzed with descriptive statistic to reveal the stakeholders’ level of awareness. SOE contractor has the highest awareness of safety leadership. It is considered as obvious finding since SOE contractor becomes dominant in Indonesia’s construction industry. The majority of big-classified contractors are SOE. Meanwhile, contractors’ BOD is the lowest. The BOD commonly uses managerial leadership to run the company rather than safety leadership. However, the safety leadership should be owned by every stakeholder in construction industry whether they are in high or low management level.

Assessment On Transit Oriented Development Pondok Cina According to GBCI

TOD is designed for public transport passengers and pedestrians to provide comfort and safety in creating a healthy lifestyle. Green Building Council Indonesia (GBCI) is needed as a reference and assessment to optimize building design. The purpose of this paper is to determine the extent of the green building concept applied, calculate the met and unmet Greenship criteria, also measure the GBCI Greenship predicate obtained. The data collection method used is project data and data analysis with the index scale method on Greenship New Building version 1.2. The results showed that in Appropriate Land Use categories credit are 11 points of 17 maximum points with percentage 64,71%, the Efficiency and Energy Conservation categories credit is 1 point of 26 maximum points with percentage 3,85%, the Water Conservation categories credit are 9 points of 21 maximum points with percentage 42,86%, the Source and Material Cycle categories credit are 2 points of 2 maximum points with percentage 100%, the Health and Safety Space categories credit are 4 points of 5 maximum points with percentage 80%, and the Building Environmental Management categories credit are 4 points of 6 maximum points with percentage 66,67%. The final results of TOD Pondok Cina Project are 31 points of 77 maximum points with percentage 40,26% which categorized as Building with Bronze predicate.

Identification of Precast Parapet Work Activities in Elevated Railway Construction

Railway infrastructure development is very massive in Indonesia. Many projects have been constructing since 2013, such as the Mass Rapid Transit (MRT), Light Rail Transit (LRT), Double-Double Track (DDT), and High-Speed Rail (HSR). And all of these projects were design with elevated structures. When applying precast parapet panel technology in the MRT project elevated section, the contractor didn’t have a reference for precast parapet work activities. Hence, it required new planning for its construction and took time. The project sample of this research was MRT Jakarta CP 103 Project. There were three stages in this research starting from documentation analysis, expert judgment, and respondent survey. There were 5 bridge construction experts and 30 respondents which were professional engineers asked for their recommendations and opinions. Descriptive analysis was applied to know the percentage of opinions. This research focuses on identifying precast parapet activities in elevated railway construction project. There are 14 activities that had been identified in this research, namely preparation, position survey, adjustment material installation, precast parapet panel shifting from trailer to the top of deck slab, precast parapet panel distribution, precast parapet panel installation, rebar parapet installation for concrete stitch, sealing work, concrete casting, formwork dismantling, and finishing. These activities will be very useful for similar precast parapet works in a future project.

Improving The Performance of Asphalt Concrete Mixtures With Polymer Asphalt in Submerged Floods

The road conditions which is always submerged can reduce the performance of the asphalt pavement. This research was conducted to obtain the characteristics of polymer asphalt concrete against flooding. Marshall testing was carried out on conventional and polymer asphalt concrete with optimum asphalt content treated with water immersion in variations of 0 days, 0.5 days, 1 day, 2 days, and 4 days. The results show polymer asphalt can improve the durability of asphalt concrete which is submerged in floodwater. This is indicated by the difference in the stability value of 113% in the variation of immersion for 4 days.

COMPARISON OF ANALYSIS BETWEEN RECTANGULAR AND CIRCULAR OVERHEAD WATER TANK

Water tank is a container used for the storing of liquids and they are classified based on shape and location. The overhead tank is an important and it is very common public utility structure. The study predicts the analysis and design of the rectangular and circular overhead water tank using ETABS software. The water tank is modeled and analyzed by using dynamic analysis to resist lateral loads and design is made using working stress method manually. Dead load, live load, wind load and seismic loads are applied based on IS codes. The behavior of structure for the parameters like Story drift, displacement, stiffness, deflection, storey shear, base shear, area of steel and hoop tension for circular and rectangular water tank are studied and then comparison of the results is made between circular and rectangular overhead water tank. By this study we say that the circular water tank is suitable for larger capacity and rectangular is suitable for smaller capacity and it is economical for larger capacity.

Database Development of Site Investigation Using GIS (A Case at Pulau Indah, Klang, Malaysia)

Site investigation works is very essential in every construction design work. Soil type and shear strength are the important parameter to design foundation system of insfrastructure project. Site investigations are not only costly, but also time consuming. There many geotechnical engineers tend to reduce site investigation works to decrease the construction cost. Based on these problems, the study was developed on site investigation database for Pulau Indah, Klang, Malaysia using Geographical Information System (GIS). Research study applied the Thiessen polygon method to obtain existing some informations type of soil and shear strength on this site. The research result was the database and map information. These data can be used for civil engineers to obtain site informations of soil type and shear strength parameter for future construction work related to the area.