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The city of Medan is famous for its many historical buildings scattered throughout the city. The building has a magnificent colonial architectural design. The building's character and unique architectural details make this building different from the others. But it is a shame that these buildings cannot enjoy their beauty at night. Lack of artificial lighting received by the building. This research aims to obtain an overview of people's visual comfort, especially at night. The method used is a qualitative method to understand phenomena experienced by research subjects such as perceptionand by means of descriptions in the form of words and language, in a special natural context. Perceptions regarding the quality of a building's lighting are largely determined by the impression a person has when they see it, either directly orindirectly (using image media or a computer screen). To facilitate the visual description of building lighting at night, modeling was carried out using Enscape software. The results of this research are that the London Sumatra (Lonsum) building has a Dutch colonial architectural style. Some of the characteristics of Dutch colonial architecture found in Lonsum buildings include: verandas that protrude into the street corners, stained glass with geometric motifs on the verandas, marble ceiling and floor tiles, cast iron balustrades on balconies and stairs, art ornaments deco in the interior, such as geometric hanging lamps and beautiful doors. Lonsum is a plantation company founded in 1906 by Harrisons & Crosfield Plc, a general trading and plantation management services company from London, England.

A reliable, efficient and high quality electrical energy supply is certainly very necessary. Frequent damage to electronic equipment and practical equipment in Building A, Faculty of Science and Technology (FST), Jambi University, prompted the author to conduct research on analyzing the quality of electrical power in this building. The research aims to analyze the quality of electrical power in building A FST. The research method used is the observation method which cannot influence the variables studied but can only record and observe the data that has been measured. The power quality quantities measured are voltage, current, active power, reactive power, power factor, voltage harmonics and current harmonics in each main panel. Based on the research results, the problem that occurs in the main panel of transformer A is load imbalance, namely at a percentage of 5.56% to 6%, the standard set by the IEC is only 5%. and the occurrence of current harmonic distortion (THDi) at a percentage of between 24%, the standard set by IEEE is 12%. The problem that occurs in the main panel of transformer B is that it has a low power factor value in the R and T phases, namely below 0.85. The occurrence of load imbalance is at a percentage of 10.9% to 12%, the standard set by the IEC is only 5%. The occurrence of voltage fluctuations is +7.4%, the standard according to PUIL 2011 is +5% with a value of 231 Volts and -10% with a value of 198 Volts and the occurrence of current harmonic distortion (THDi) is very high at a percentage of 29.83% to 58.419%, the value permitted by the IEEE standard is 15%.

Yogyakarta Special Region is widely known as a student, tourist, and cultural city. These conditions triggered Yogyakarta's development and growth to be very rapid. So environmental problems arise, which, if not immediately addressed, will worsen environmental conditions. The type of research carried out was descriptive-qualitative through observation and interviews. The research results showed that many developments violated legal and environmental rules. The environmental impacts that occur include a reduction in the amount of green open land, a reduction in water catchment areas, sanitation problems, groundwater availability, and river pollution. Disaster risks arising from development include landslides on river borders due to development, flooding, and land shifts. Efforts that need to be implemented to manage and prevent environmental damage include the implementation of environmental and social management systems, the implementation of institutional functions, and efforts to develop community capacity through training and community education. Meanwhile, efforts are being made to reduce disaster risk through physical mitigation, biological mitigation, and the mitigation of social, economic, and cultural impacts.

Beton merupakan bahan yang paling banyak digunakan dalam pembangunan gedung, jembatan, jalan dan lain-lain. Beton termasuk bahan yang mempunyai kuat tekan tinggi, tahan terhadap api dan keausan, tahan cuaca, dan harganya relatif murah, karena menggunakan bahan-bahan dasar dan lokal, dapat diangkut maupun dicetak sesuai keinginan, biaya perawatan relatif murah, serta mutu betonnya dapat disesuaikan dengan kebutuhan. Pada penelitian ini,  penulis hanya membuat beton normal dengan tujuan untuk mengetahui nilai slump setiap variasi umur dan berapa faktor pengali pada nilai kuat tekan beton dengan variasi umur 3 hari, 4 hari, 7 hari, 14 hari dan 28 hari. Benda uji  yang digunakan yaitu berberntuk slinder berdiameter 15 cm dan tinggi 30 cm sebanyak 3 benda uji setiap variasi umur, perhitungan perencanaan campuran beton menggunakan SNI 03-2834-2000 dengan kuat tekan rencana 32 Mpa. Hasil penelitian pada nilai slump mendapatkan nilai yang berbeda dan ada yang sama dengan nilai berturut-turut 16 cm, 15 cm, 17 cm, 16 cm, dan 17 cm penyebab dari nilai slump yang berbeda adalah pada saat pembuatan benda uji dengan waktu yang berbeda. Kuat tekan beton berturut-turut 7,92 MPa, 8,01 MPa, 12, 07 MPa, 15,8 MPa dan 21,12 MPa. Adapun nilai faktor pengali berdasarkan persamaan y = 0,0007x2 + 0,0047x2 + 0,343 R2 = 0,9909 berturut-turut sebesar 0.60; 070; 082; 0,90; dan 1.

Crowd has been a normal thing particularly in big cities. This could lead to negative causes such as slower mobilization or social anxiety towards individuals. Ever since the pandemic of Covid-19 lands all over the world, the application of thermal censoring devices has been commonly encountered in public places. The most common use of thermal censors is to detect human body temperature. Therefore, this research is done to analyze the effectivity of thermal cameras on detecting crowd inside a building. By using surveys and literature reviews as our methods, the result of this research shows that from 30 survey respondents, with the average age of 17-25 years old that tends to do indoor activities, 55.6% of them find that crowd is affecting their efficiency during activities. Besides that, 66.7% respondents struggle to measure the crowd level inside a building, also 87.3% of them feels like there should be a solution to this problem. Thus, this research proves that the use of thermal censors on camera for crowd detection is very effective with the accuracy rate of 99%. In conclusion, thermal censor devices are effective to be used as crowd detection devices.

In the Development of Building Activity Budgeting in the Central Government, the construction world has been marked by the construction of increasingly large and complex buildings and other facilities. This is a business opportunity as well as a challenge for the business community, especially the construction services business. The Mojokerto City Government, in this case the Public Works and Spatial Planning Service of Mojokerto City, can be said to be a construction service business actor because the Public Works and Spatial Planning Service is the owner of a project, one of which is the Mojokerto City DPRD Building Construction Project. Where the project is funded by the APBD for one budget year, namely 2020 for the implementation of the work, with an estimated budget of one year. The location for the construction of the building is former agricultural land and with the results of soil tests through sondir boring, there is soft soil with an average thickness of 1.5 m on the surface of the ground. The use of Floating floors can be used as an alternative in the construction of the lower structure of the Mojokerto City DPRD Building. By using the analysis with the Value Engineering method, the results of the initial design Budget Details obtained a total work price of Rp. 10,043,070,000.00 with 28,984 m3 of gravel fill at a cost of Rp. 6,750,501,695.00, with a time required of 99 days, while the alternative Budget Cost produces a total work price of Rp. 9,389,702,000.00 with the soil fill reduced by the concrete slab as wide as the building so that the gravel fill becomes 22,382 m3 at a cost of Rp. 5,212,802,735.00. Thus there is a cost difference of Rp. 1,537,698,960.00 or 21.8% with an implementation time of 77 calendar days and speeding up the work by 22 calendar days. The use of the Floating Floor Structure can be a substitute for soil fill in the construction of the lower structure of the Mojokerto City DPRD building which is more profitable in terms of both cost and time.

To support green energy and reduce the effects of greenhouse gases, it is necessary to conceptualize and explore the use of renewable energy. In this research, the use of new renewable energy, especially photovoltaics (PV), will be applied to educational buildings, especially at ITS PKU Muhammadiyah Surakarta. This system is intended to reduce the use of conventional electrical energy. This system will be installed on the roofs of campus buildings with installation plans to meet the power requirement of 4.8 kW. This photovoltaic (PV) system will be modeled to determine the number of PV panels needed. Based on the simulation results, the number of panels required is 36 panels (2 series, 18 parallel) to produce 4.85kWh of power. Modeling and analysis of this system was carried out using RETScreen and MATLAB SIMULINK software.

Regional government assets are one of the pillars of revenue generation for the Regional Government. In managing regional assets, regional governments must consider various aspects ranging from needs planning, procurement, administration, utilization, maintenance and security to supervision so that regional assets are able to provide optimal contributions to the regional government concerned. Regional assets are a resource and a potential that is absolutely necessary in the administration of Regional Government, because if assets are managed well they can provide benefits to the Regional Government and the community as a source of income as well as supporting the role and function of the Regional Government as a provider of regional services to the community.

Clean water is a basic human need. Company activities, especially in office areas, require the availability of water that is large enough to move during the work period. One of them is an office area in one of the Fertilizer Industries. The purpose of this research is to identify efforts to save clean water in the office area of one of the fertilizer industries to increase awareness of environmental conditions. This study was conducted by calculating the efficiency of water saving after water-saving efforts were made. Efforts made include monitoring water meters, using water-saving taps, using flushes in toilets, and using sprinklers in plants sprinklers. The use of water-saving faucets uses push taps where the faucet will close automatically when turned on after a while. And for the flush system used, namely dual flush toilets. The The dual flush system has two types of watering.    

Kebakaran menjadi masalah yang serius di Indonesia dikarenakan potensi tingkat kebakaran di Indonesian cukup tinggi. Tidak ada tempat kerja yang dapat dijamin bebas dari bahaya kebakaran, contohnya seperti pada bangunan gedung di galangan Tanjung Perak. gedung perkantoran dilengkapi dengan sekat dan furniture yang memenuhi seluruh lantai dan di dalam gedung perkantoran terdapat komputer dan arsip-arsip data perusahaan. Sehingga, jumlah dan jenis bahan mudah terbakar sangat tinggi intensitasnya yang berakibat rawan penjalaran api. Upaya pemadaman akan mengalami kesulitan termasuk upaya penyelamatan korban dikarenakan terbatasnya akses untuk masuk maupun keluar bangunan jika terjadi kebakaran. Tujuan dari penelitian ini untuk mengetahui, memahami, dan mengevaluasi sistem pencegahan dan penanggulangan kebakaran pada bangunan gedung galangan di Tanjung Perak. Pada penelitian ini pendekatan yang dilakukan adalah melalui pendekatan kualitatif. Dalam hal ini peneliti bertindak sebagai pengumpul data dan sebagai instrument aktif dalam upaya mengumpulkan data-data di lapangan. Sedangkan instrument pengumpulan data yang lain selain manusia adalah berbagai bentuk alat-alat bantu dan berupa dokumen-dokumen lainnya. Hasil penelitian menunjukkan gedung ini diidentifikasi termasuk pada bahaya kebakaran sedang tingkat II berdasarkan klasifikasi tingkat potensi kebakaran sesuai KEP.186/MEN/1999.

An investigation into the building is carried out to determine the suitability and safety of the building and the strength of the structure. The investigations to be carried out include field and laboratory investigations. This is done to determine the feasibility and safety of existing structures. Apart from that, it is also hoped that this investigation can provide recommendations regarding repair or strengthening methods if necessary, referring to the requirements for Structural Concrete for Buildings SNI 2847:2019 and Procedures for Earthquake Resistance Planning for Building and Non-Building Structures SNI 2847:2019. From the results of structural testing using UPV and Hammer Test, it was found that the structural system is an open frame consisting of plates, beams and columns using concrete material, while the joists use steel plinths. The reinforcing steel used uses plain iron U40 as flexible reinforcement with shear reinforcement with U24. The quality of concrete obtained respectively for column f'c 25 MPa, beam f'c 22 MPa and floor slab f'c 22 MPa. Based on the results of the floor leveling survey to record the potential for building subsidence or floor sagging using a water level, it was concluded that there was no slope found in the building as a whole. The deflection that occurs is local and relatively flat. To meet the requirements, strengthening was carried out by increasing the dimensions of the columns and beams, adding plates to the steel profiles on the flange and web.

Dalam keadaan Indonesia yang terus kehilangan lahan kosong, bangunan gedung bertingkat menjadi salah satu jalan keluar untuk memperluas area beraktivitas. Namun perlu digarisbawahi bahwa gedung bertingkat juga memiliki risiko terbakar sehingga dapat menyebabkan kerugian materi maupun korban jiwa yang lebih besar. Penelitian ini bertujuan untuk menyusun perencanaan Emergency Response Plan (ERP) pada gedung bertingkat yang memiliki tujuh lantai. Perencanaan ini diharapkan dapat memenuhi standar yang ditetapkan oleh pemerintah melalui undang-undang maupun peraturan lain agar suatu gedung memiliki prosedur tanggap darurat. Penelitian ini diawali dengan pendataan dimensi dari bangunan gedung dan fungsi setiap lantai pada bangunan. Dari data tersebut kemudian didapatkan estimasi kapasitas bangunan yang selanjutnya dapat dihitung kebutuhan pintu darurat, tangga darurat, dan waktu yang diperlukan untuk dapat menyelamatkan diri dari gedung. Setelah dilakukan perhitungan dan analisis, bangunan gedung yang diteliti membutuhkan dua unit pintu darurat masing-masing untuk seriap lantai. Pintu darurat yang dibutuhkan dengan ukuran paling lebar adalah pada lantai 5 karena banyaknya orang yang berada di tempat tersebut. Ukuran lebar tangga yang diperhitungkan adalah satu meter yang mana sudah sesuai dengan rancangan bangunan. Selanjutnya waktu perhitungan matematis total untuk waktu evakuasi yang paling besar adalah lantai 5 pada koridor I, yaitu selama 3,13 menit. Hal tersebut karena kecilnya ukuran lebar dari koridor.

High-rise office building adalah gedung dengan jumlah lantai paling sedikit 16 lantai yang difungsikan sebagai area kantor. Dengan ketinggian gedung yang cukup tinggi dan jumlah penghuni yang lebih dari 100 orang maka dapat dikategorikan sebagai bangunan dengan potensi bahaya tinggi. Salah satu bahaya yang mengintai adalah kebakaran yang dapat membahayakan penghuni gedung. Dengan pelatihan evakuasi yang tepat saat keadaan darurat kebakaran, diharapkan dapat meminimalisir kerugian yang dapat terjadi. Evaluasi dalam pelaksanaan simulasi evakuasi kebakaran diperlukan untuk mengoptimalkan simulasi yang dilakukan. Melalui penelitian dengan metode deskriptif kualitatif ini, peneliti akan membahas penerapan sistem tanggap darurat kebakaran mulai dari sarana dan prasarana yang diperlukan dalam menghadapi situasi darurat kebakaran pada gedung bertingkat. Penelitian ini menghasilkan beberapa kesimpulan yang akan membantu pembaca dalam mengoptimalisasi sistem tanggap darurat yang ada pada gedung bertingkat.

The Revitalization Development of the Leles People's Market Building Phase III is a government development project overseen by the Garut Regency DISPERINDAG. The construction of this market building began in mid-2021 and was planned to be completed within 120 days of the project plan, however, there were obstacles that resulted in the realization of the construction process requiring additional time to complete the construction. The method used in this study is the Fault Tree Analysis (FTA) method, the purpose of which is to find the fault tree of various errors that will result in the occurrence of unwanted events and the Event Tree Analysis (ETA) method is used to estimate and assess the probability of each consequence. can arise from an event in anticipation of its various consequences. This research methodology uses the concepts used in the survey using questionnaires and interviews with informants/respondents involved in the Catfish Market Revitalization project. There are two main intermediate events that cause delays in the development of the Revitalization of the Leles Garut People's Market, namely structural work / architectural work and work on the completion of side buildings. The result of identifying the total value of the minimum cut set combination probability for the Top Event of 0.9998 is the overall result of the total combination calculation of the minimum cut set. The results of the Initiating scenario impact analysis which has a "High" risk level caused by the Owner due to Rework work in the field, Changes to work plans, Delays in project work targets, There is some work that requires additional working hours.

Indonesia merupakan daerah yang sering mengalami gempa bumi karena itu, konstruksi bangunan harus didesain sesuai dengan standar peraturan yang berlaku. Penelitian ini bertujuan untuk mengetahui perilaku struktur dan skema terjadinya plastifikasi pada elemen struktur, serta menentukan level kinerja struktur gedung agar tetap kokoh saat terjadi gempa. Analisis pushover dengan displacement coefficient methode FEMA 440 (2005) yang berbasis statik nonlinier digunakan untuk mengetahui level kinerja struktur bangunan. Studi kasus dilakukan pada gedung beton bertulang RND PT Bernofarm Sidoarjo yang berfungsi sebagai kantor dan laboratorium di bidang farmasi. Gedung tersebut dibangun pada tahun 2015 dengan 6 lantai dan tinggi 28 meter. Sendi plastis baru dapat diketahui dengan melakukan analisis pushover. Digunakan program ETABS v.19 dan SAP2000 v.22 untuk analisis pushover sehingga diperoleh nilai perpindahan untuk arah X dan Y sebesar 0,311 m sehingga level kinerja struktur gedung ialah Damage Control. Pada kategori ini, bila terjadi gempa, elemen struktural gedung mengalami kerusakan minimal sehingga gedung masih dapat digunakan setelah terjadi gempa, namun fasilitas atau kelengkapan operasional gedung mungkin ada yang tidak dapat digunakan sehingga diperlukan perbaikan sebelum digunakan kembali. Ancaman terhadap korban jiwa sangat kecil.

Indonesia is a country that is vulnerable to natural disasters, one of which is an earthquake. Because Indonesia is at the meeting point of the 3 most important major plates in the world, one of the effects of the earthquake is damage to building structures. Structural planning is needed for buildings with earthquake resistance from the many occurrences of earthquakes seen in recent times and the losses incurred.Pushover analysis is a non-linear static analysis. The static load captured at the center of mass of each floor is taken into account in this pushover analysis as the effect of the design earthquake on the building structure, the aim of which is to find out how the building structure will collapse during an earthquake so that you can know which parts of the structure are in critical condition and what to do if they do not meet the requirements.The results of the analysis show that the maximum base shear force for the x direction capacity curve is 484.6749 tons with a displacement of 0.095228 m occurring in the 6th step, while the y direction of the maximum base shear force is 555.339 tons and displacement of 0.152807 m occurs in the 14th step. The performance point value is also obtained from the analysis pushover in the x direction with  = 475.025 tons and D = 0.087 m yield Sa = 0.205 g and Sd = 0.072 m, while for the y direction with  = 499.168 tons and D = 0.086 m yield Sa= 0.225 g and Sd = 0.067 m. Then at the level of building performance in the x and y direction parametersMaximum Total Drift Ratio included in the category Immediate Occupancy (IO), it can be concluded that the building did not suffer significant damage, the building is safe when an earthquake occurs, the risk of loss of life and structural failure is not too significant and can be used again immediately.

The Borepile Foundation and the Implementation Method for the Madrasah Aliyah Madrasatul Qur’an Tebuireng Jombang Building Project, is one of the deep foundation. The use of borepile foundation is an alternative to minipile foundation. Calculation of building weight using the SAP2000 program. The points reviewed are points S-1 and points S-2. Pile bearing capacity analysis using the Mayerhoff method. By using sondir soil evidence (CPT). The construction of the Madrasah Aliyah Madrasatul Qur’an Tebuireng uses a diameter of 80 cm for borepiles with a depth of 11 m and has 23 D22 reinforcement. There are 4 types of pile caps in the borepile. The dimensions of each pile cap, namely PC-1, PC-2, and PC-4, are 150 cm x 150 cm, while PC-3 is 150 cm x 100 cm. For reinforcement in the x-axis direction of 22 D22 – 150 mm, reinforcement in the y-axis direction of 24 D22 – 160 mm. In the implementation method using a mini borepile because it considers aspect of heavy equipment mobilization. Some of the work in progress includes measuring, making reinforcement, drilling, installing reinforcement, casting, and making pile caps.

Precast concrete is a concrete structure construction technology with more printed components in the factory. Here the researcher takes into account to determine the planning of structural elements using precast concrete and its connections. The Madrasatul Qur'an MA Building in Nanggungan Village was used as the object of research to take into account floor plates, beams and columns, with reference to SNI 2847 – 2019, aspects of repetition, connections on beams, columns (Crobel) and floor plates. The calculation results on a 20 cm thick plate + overtoping with repeating plates of dimensions of 15 cm and 5 cm, overtoping using pedestal reinforcement D8 – 135 mm in the X direction, using wermesh D8 – 135 mm on the pedestal in the Y direction. planned 2 models of beam dimensions of 40 cm x 60 cm, upper reinforcement 5 D16 pedestal, 4 D16 field, lower reinforcement 4 D16 pedestal, 5 D16 pitch, Ø 10 – 150 fulcrum, Ø 10 – 150 pitch, waist reinforcement 2 D13 fulcrum, 2 D13. Beam model 2 upper reinforcement 3 D16 pedestal, 3 D16 pitch, rebar Ø 10 – 150 fulcrum, Ø 10 – 150 pitch, waist reinforcement 2 Ø 13 fulcrum, 2 Ø 13 pitch. The connection between the beam and the plate relies on a pedestal mounted lengthwise, the connection of the column beam uses a short console.

Pondok pesantren Bustanul Makmur II yang berada di Kecamatan Genteng Kabupaten Banyuwangi mempunyai asrama putra dan asrampa putri. Asrama putri merupakan bangunan bertingkat 4 lantai serta terdapat permasalahan pada distribusi air bersih yaitu suplai air yang belum bisa mencukupi penggunanya yang diduga bermasalah pada ground tank. Tujuan studi ini untuk mengetahui serta menghitung debit puncak dan kehilangan tekanan pada instalasi jaringan pipa air bersihnya. Studi ini menggunakan acuan SNI 0140:2007 terkait cara perhitungan debit air dan SNI 8153:2015 tentang sistem pipa pada bangunan gedung, serta menggunakan metode perhitungan Hazen William tentang kehilangan tekanan pada instalasi jaringan pipa. Metode pengumpulan data dilakukan dengan survei lokasi, wawancara dengan pihak asrama, serta observasi. Hasil studi menunjukkan bahwa debit puncak air bersih dilapangan tidak bisa memenuhi penggunanya dikarenakan nilai debit puncak air bersih dilapangan sebesar 9,22 m 3 /jam, seharusnya nilai debit puncak air bersihnya sebesar 12,76 m 3 /jam dan kapasitas graound tank dilapangan hanya sebesar 27,7 m 3 /hari yang seharusnya berkapasitas 38,28 m3 /hari. Nilai kehilangan tekanan yang terjadi pada Asrama Putri Pondok Pesantren Bustanul Makmur II sebesar 1,259171061 m.

The pile foundation is a deep foundation that is often used in the construction of high-rise buildings and small-scale buildings. The foundation is required to have a greater bearing capacity than the load on it. This study aims to determine the maximum bearing capacity of the foundation against the work load including the additional load from the 15-story Lamongan Muhammadiyah University building which was found to be cracked. Calculation of the bearing capacity of a single pile is carried out to determine the bearing capacity of a single pile using the Mayerhoff, Reese O'neil, and Reese and Wright method. Calculation of the bearing capacity of group piles is carried out to determine the bearing capacity of piles in one group using the Converse-Labarre, Los Angle Group, and Seiler-Keeney methods. Controlling the bearing capacity of single and group pile foundations, whether they are able to withstand the load on them using the axial loads and moments obtained. The results of the calculation of the bearing capacity of a single pile foundation at a depth of 30 m using the Meyerhoff calculation method obtained the carrying capacity of a single pile permit (Q_a) at point DB-1 of 916,80 tons and DB-2 of 916,80 tons, Reese and O' neil obtained Power single pile permit bearing (Q_a) at point DB-1 of 668,67 tons and DB-2 of 668,67 tons, Reese and Wright obtained single pile permit bearing capacity (Q_a) at point DB-1 of 1.070,08 tons and a DB-2 of 1.070,08 tons, while the shamanic strength of the largest pile group foundation was obtained using the Converse-Labarre method with ultimate bearing capacity using the Reese anad Wright method, bearing configuration from the pile group capacity (Q_g) (2 x 2) obtained at point DB -1 of 9.733,45 tons and DB-2 of 9.733,45 tons, configuration (2 x 3) at point DB-1 of 13.810,45 tons and DB-2 of 13.810,45 tons, configuration (3 x 2 ) at point DB-1 of 13.810,45 tons and DB-2 of 13.810,45 tons. The results of controlling the bearing capacity of the foundation by looking at the value of the allowable bearing capacity is greater than the value of the axial load (P ≤ Q_g). From the calculation of the bearing capacity of the piles it can be concluded that the pile foundations at points DB-1 and DB-2 are safe.