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Tinjauan Proses Pengolahan Air Baku (Raw Water) Menjadi Air Bersih Pada Sarana Penyediaan Air Minum (Spam) Kecamatan Rangsang Kabupaten Kepulauan Meranti Harmiyati, Harmiyati
JURNAL SAINTIS Vol 18 No 1 (2018)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2005.vol8(2).2808

[ID] Di kabupaten Kepulauan Meranti khususnya Masyarakat Kecamatan Rangsang pada umumnya menggunakan air hujan dan air Sungai sebagai kebutuhan air bersih sehari-hari, jika pada musim kemarau masyarakat pada umumnya sulit mendapatkan air bersih. Dengan adanya Sarana penyediaan air bersih yang dibangun oleh pemerintahan Kabupaten Kepulauan Meranti yaitu Sarana Penyediaan Air Minum (SPAM) ini sangat membantu dalam memenuhi kebutuhan air bersih masyarakat. Dilihat secara warna, air bersih yang di produksi oleh SPAM Kecamatan Rangsang berwarna kecoklatan, dilihat dari segi warna hampir sama dengan air baku SPAM Kecamatan Rangsang tersebut. Pada SPAM Kecamatan Rangsang ini proses pengolahan air bersih menggunakan metode koagulasi, flokulasi, sedimentasi dan filtrasi. Peneliti mencoba meninjau apakah proses-proses pengolahannya telah sesuai dengan metode yang telah di terapkan, mengetahui kualitas air bersih yang dihasilkan serta mengetahui masalah-masalah yang terdapat pada SPAM Kecamatan Rangsang tersebut. Dari hasil penelitian yang dilakukan untuk pemprosesan air bersih adanya proses yang tidak dilakukan yaitu tidak dilakukan pembubuhan zat Koagulan,  hal tersebut dikarenakan zat-zat Koagulan yang ada di SPAM Kecamatan Rangsang tidak tersedia untuk saat ini. Untuk kualitas air bersih yang di produksi SPAM Kecamatan Rangsang tidak memenuhi standar kualitas air bersih berdasarkan peraturan menteri kesehatan nomor 416 tahun 1990 tentang “syarat-syarat dan pengawasan kualitas air” yaitu air bersih sesuai dengan hasil uji laboratorium dinas kesahatan kota pekanbaru pada tanggal 13 November 2017, serta terdapat beberapa alat yang tidak beroperasi, yaitu rusaknya 1 buah pompa Intake  dan 1 buah pompa distribusi [EN] In the Meranti Islands district, especially in the Subdistrict of Rangsang District, the people generally use rain water and river water as their daily clean water needs, if in the dry season the community in general is difficult to get clean water. With the availability of clean water facilities built by the government of the Meranti Islands Regency, the Drinking Water Supply Facility (SPAM) is very helpful in meeting the community's clean water needs. Viewed in color, the clean water produced by SPAM in the District of Rangsang is brownish in color, in terms of color it is almost the same as the SPAM raw water in the District of Rangsang. At SPAM in the District of Rangsang, the process of treating clean water uses the methods of coagulation, flocculation, sedimentation and filtration. Researchers try to review whether the treatment processes are in accordance with the methods that have been applied, find out the quality of clean water produced and find out the problems found in the SPB Subdistrict. From the results of research conducted for the processing of clean water there is a process that is not done that is not done by adding coagulant substances, it is because the coagulant substances in SPAM Subdistrict, Rangsang District are not available at this time. For the quality of clean water produced by SPAM in the Subdistrict of Rangsang District, it does not meet clean water quality standards based on the Minister of Health Regulation number 416 of 1990 concerning "requirements and quality control of water", which is clean water in accordance with the results of laboratory tests on the city health office Pekanbaru on November 13 2017, and there are some tools that are not operating, namely the damage of 1 Intake pump and 1 distribution pump.

Pengaruh Posisi Dinding Geser Terhadap Kinerja Struktur Pada Gedung Tidak Beraturan Dengan Menggunakan Metode Response Spectrum Kurnia, Arif; Dewi, Sri Hartati; Kurniawan, Mahadi
JURNAL SAINTIS Vol 18 No 1 (2018)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2018.vol18(1).2809

[ID] Dinding geser adalah slab beton bertulang yang dipasang dalam posisi vertikal pada sisi gedung. Dinding geser merupakan salah satu sistem yang berfungsi menjaga kekakuan struktur, maka posisi dinding geser ditempatkan pada lokasi-lokasi tertentu, dengan itu penggunaan dinding geser dapat digunakan secara efektif dalam menahan beban yang diterimanya. Pemodelan struktur gedung dilakukan dengan bantuan software ETABS. Analisis beban gempa menggunakan metode respons spektrum. Pemodelan struktur dibuat untuk gedung tanpa menggunakan dinding geser dan 3 model gedung menggunakan dinding geser dengan posisi yang berbeda. Penentuan posisi dinding geser dilakukan dengan cara uji coba sehingga didapat posisi yang paling efektif. Perhitungan beban gempa mengacu pada pedoman SNI 1726-2012, beban mati berpedoman pada PPURG-1987 dan untuk beban hidup berpedoman pada SNI 1727-2013. Dari hasil perhitungan pada gedung tidak beraturan dengan metode respons spektrum didapat nilai untuk kinerja simpangan maksimum dari 4 model gedung. Simpangan maksimum arah sumbu x pada Gedung tanpa dinding geser sebesar 157,57 mm, pada gedung dengan dinding geser model 1 sebesar 123,41 mm, pada gedung dengan dinding geser model 2 sebesar 125,30 mm, pada gedung dengan dinding geser model 3 sebesar 94,46 mm. Simpangan maksimum arah sumbu y pada gedung tanpa dinding geser sebesar 193,13 mm, pada gedung dengan dinding geser model 1 sebesar 143,79 mm, pada gedung dengan dinding geser model 2 sebesar 141,16 mm, pada gedung dengan dinding geser model 3 sebesar 119,24 mm.  Dari hasil kinerja simpangan maksimum pada Gedung tidak beraturan dengan metode respons spektrum didapat posisi dinding geser yang paling efektif adalah pada Gedung dengan dinding geser model 3 [EN] The Shear walls are reinforced concrete slabs that are installed vertically on the side of the building. Shear wall is one system that serves to maintain the rigidity of the structure, then the position of the shear wall is placed at certain locations, with the use of the shear wall can be used effectively in holding the load it receives. Building structure modeling is done with the help of ETABS software. Earthquake load analysis using the spectrum response method. Structural modeling is made for buildings without the use of shear walls and 3 building models use shear walls in different positions. Determination of the position of the shear wall is done by testing so that the most effective position is obtained. Calculation of earthquake load refers to the guideline of SNI 1726-2012, dead load is guided by PPURG-1987 and for live load is guided by SNI 1727-2013. From the results of calculations on irregular buildings with the spectrum response method obtained values for maximum deviation performance from 4 building models. The maximum deviation of the x-axis direction in Buildings without shear walls is 157.57 mm, in buildings with model 1 shear walls is 123.41 mm, in buildings with model 2 shear walls is 125.30 mm, in buildings with model 3 shear walls is 94.46 mm. The maximum deviation of the y axis direction in buildings without shear walls is 193.13 mm, in buildings with model 1 shear walls of 143.79 mm, in buildings with model 2 shear walls of 141.16 mm, in buildings with shear walls of model 3 of 119.24 mm. From the results of the maximum deviation performance in the irregular building with the spectrum response method obtained the most effective position of the shear wall is the Building with the shear wall model 3

Kajian Pusat-Pusat Pelayanan Di Kabupaten Kampar Muliana, Rona; Astuti, Puji; Fadli, Akmal
JURNAL SAINTIS Vol 18 No 1 (2018)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2018.vol18(1).2846

[ID] Pusat-pusat pelayanan merupakan suatu aglomerasi dari berbagai kegiatan atau aktivitas serta aglomerasi dari berbagai prasarana dan sarana yang dapat menunjang pertumbuhan dan perkembangan wilayah. Pembangunan pusat-pusat pelayanan selain untuk memenuhi kebutuhan masyarakat juga diharapkan mampu mendukung pengembangan wilayah. Adapun tujuan penelitian ini adalah: (1) mengidentifikasi struktur pusat-pusat pelayanan di Kabupaten Kampar berdasarkan RTRW Kabupaten Kampar; (2) mengidentifikasi struktur pusat-pusat pelayanan di Kabupaten Kampar berdasarkan analisis skalogram dan indeks sentralitas; (3) menyusun rekomendasi struktur pusat-pusat pelayanan di Kabupaten Kampar. Metode penelitian adalah deduktif kuantitatif dengan menggunakan analisis skalogram dan indeks sentralitas. Hasil penelitian menunjukkan Dari draft RTRW Kabupaten Kampar dengan hasil analisis skalogram dan indeks sentralitas terdapat perbedaan struktur pusat-pusat pelayanan. Dari analisis skalogram dan indeks sentralitas tidak terdapat hirarki II dan hirarki III sehingga terjadi pemusatan fasilitas pada hirarki 1 yakni Kota Bangkinang sebagai ibukota Kabupaten. Setelah dibandingkan struktur pusat-pusat pelayanan di Kabupaten Kampar berdasarkan draft RTRW dengan analisis skalogram dan indeks sentralitas, maka direkomendasikan struktur pusat-pusat pelayanan di Kabupaten Kampar terdiri dari 5 hirarki yaitu hirarki I berada di Kecamatan Bangkinang Kota, hirarki II berada di Kecamatan Tapung, Kampar Kiri, Siak Hulu, dan Tapung Hulu, hirarki III berada di Kecamatan Tapung Hilir, Kampar Kiri Hilir, dan XIII Koto Kampar, hirarki IV berada di Kecamatan Bangkinang, Gunung Sahilan, Perhentian Raja, Salo, dan Kampar, hirarki V berada di Kecamatan Kampar Kiri Tengah, Rumbio Jaya, Kuok, Kampar Timur, Koto Kampar Hulu, Tambang, Kampar Utara, dan Kampar Kiri Hulu. [EN] Service centers are an agglomeration of various activities or activities as well as agglomeration of various infrastructure and facilities that can support the growth and development of the region. The development of service centers in addition to meeting the needs of the community is also expected to be able to support regional development. The objectives of this study are: (1) to identify the structure of service centers in Kampar Regency based on the Kampar Regency RTRW; (2) identifying the structure of service centers in Kampar District based on a scalogram analysis and centrality index; (3) prepare recommendations for the structure of service centers in Kampar District. The research method is quantitative deductive using scalogram analysis and centrality index. The results showed that from the draft of the Kampar District RTRW with the results of the scalogram analysis and the centrality index there were differences in the structure of the service centers. From the scalogram analysis and the centrality index there is no hierarchy II and hierarchy III so that there is a centralization of facilities in hierarchy 1 namely the City of Bangkinang as the capital of the Regency. After comparing the structure of the service centers in Kampar Regency based on the draft RTRW with a scalogram analysis and centrality index, it is recommended that the structure of the service centers in Kampar Regency consist of 5 hierarchies namely hierarchy I is in Bangkinang Kota District, hierarchy II is in Tapung District, Kampar Kiri, Siak Hulu, and Tapung Hulu, hierarchy III is in Tapung Hilir District, Kampar Kiri Hilir, and XIII Koto Kampar, hierarchy IV is in Bangkinang District, Mount Sahilan, Perhentian Raja, Salo, and Kampar, hierarchy V is in Kecamatan Subdistrict Kampar Kiri Tengah, Rumbio Jaya, Kuok, Kampar Timur, Koto Kampar Hulu, Tambang, Kampar Utara, and Kampar Kiri Hulu.

Faktor yang Berhubungan dengan Penggunaan APD pada Pekerja Teknisi Mesin di PT PLN Rayon Tembilahan Edigan, Firman; Putra, Deny Pratama
JURNAL SAINTIS Vol 18 No 1 (2018)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2018.vol18(1).3196

[ID] PT PLN Rayon Tembilahan adalah perusahaan yang bergerak di bidang penyediaan tenaga listrik, pada penelitian awal terdapat pekerja pada shift siang masih banyak pekerja yang tidak menggunakan APD dengan lengkap sesuai dengan bagian pekerjaanya. Tujuan penelitian ini untuk mengetahui hubungan pengetahuan pekerja, kondisi lingkungan, ketersediaan sarana, pengawasan terhadap penggunaan APD pada pekerja teknisi mesin di PT PLN Rayon Tembilahan. Metode penelitian yang digunakan adalah penelitian kuantitatif dengan desain penelitian Cross Sectional. Sampel dalam penelitian ini menggunakan total sampling dimana pekerja teknisi mesin di PT PLN Rayon Tembilahan yang berjumlah 35 orang. Analisis data secara univariat dan bivariat dengan uji-square. Hasil penelitian yang diperoleh tidak ada hubungan pengetahuan dengan penggunaan APD dengan nilai p=0,899, adanya hubungan kondisi lingkungan dengan penggunaan APD dengan nilai p=0,022 dan diperoleh nilai OR=8,500, adanya hubungan sarana prasarana  dengan penggunaan APD dengan nilai p=0,031 dan diperoleh nilai OR=6,857, tidak ada hubungan pengawasan dengan penggunaan APD dengan nilai p=0,854 dan diperoleh nilai OR=1,429. Diharapkan kepada pihak PLN Rayon Tembilahan agar memperihatikan kondisi lingkungan kerja  dan bisa melengkapi sarana prasarana untuk pekerja agar dapat mengurangi resiko terhindar dari kecelakaan kerja. [EN] PT PLN Rayon Tembilahan is a company in the provision of electric power, In the initial study there are workers in the afternoon shift there are still many workers who do not use the complete PPE related with their work, the purpose of this study to determine the relationship of worker knowledge, environmental conditions, the availability of facilities, supervision of the use of PPE on workers in the engine technician PT PLN Rayon Tembilahan. The research method used is quantitative research with Cross Sectional research design. The sample in this research use total sampling where machine technician workers in PT PLN Rayon Tembilahan which amounted to 35 person. Univariate and bivariate data analysis with square test. The result of this research is no correlation with the use of PPE with p = 0,899, there is relation of environmental condition with PPE usage with p value = 0,022 and obtained value OR = 8,500, there is correlation of facility of infrastructure by using PPE with p value = 0,031 and Value OR = 6.857, there is no relationship of supervision with the use of PPE with the value p = 0.854 and obtained the value OR = 1.429. It is expected to PLN Rayon Tembilahan to envisage the condition of the work environment and can equip the infrastructure for workers to reduce the risk of avoidance of work accident.  

Optimalisasi Jasa Antar Koridor Pelayanan Trans Metro Pekanbaru Berbasis Persepsi Penumpang Muttaqin, Muchammad Zaenal
JURNAL SAINTIS Vol 18 No 1 (2018)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2018.vol18(1).3197

[ID] Dalam upaya menciptakan suatu system transportasi yang baik di kota Pekanbaru, keberadaan Trans Metro Pekanbaru sebagai moda transportasi utama amat perlu dikembangkan secara konsisten dan menerus. Setiap rute pelayanan tersebut memiliki karakteristik tersendiri terkait jenis pelayanan dan karakteristik rute yang dilayani. Tujuan dari penelitian ini adalah untuk mengetahui kualitas pelayanan dalam perbandingan rute pelayanan agar menjadi pertimbangan dalam perhitungan kualitas pelayanan angkutan umum Trans Metro Pekanbaru. Batasan dari penelitian ini adalah hanya membandingkan dua rute perjalanan, yakni rute 2 yang menghubungkan Terminal BRPS-Kulim (rute komersial) dan rute 3 yang menghubungkan Ramayana-UIN Suska Panam (Rute komersial dan pendidikan). Analisis IPA (Importance-Performance Analysis) digunakan untuk mengetahui kualitas pelayanan antar rute perjalanan Trans Metro Pekanbaru sehingga memudahkan dalam penentuan prioritas bagi Trans Metro dalam melakukan peningkatan pelayanannya untuk setiap rute pelayanan. Sampel penelitian ini adalah 279 orang untuk setiap rute perjalanan. Hasil penelitian menunjukkan bahwa terdapat perbedaan pada setiap rute perjalanan. Secara umum, Hal ini dikarenakan penumpang memberi alasan tentang ketertarikan untuk menggunakan Trans Metro Pekanbaru adalah lebih menarik dibanding moda yang lain. Sehingga, strategi peningkatan kualitas dari segi waktu pelayanan menjadi perhatian serius bagi Trans Metro Pekanbaru untuk mencapai sebuah system transportasi yang lebih baik dan menuju transportasi yang berkelanjutan di kota Pekanbaru. [EN] In an effort to create a good transportation system in the city of Pekanbaru, the existence of Trans Metro Pekanbaru as the main transportation mode is very necessary to be developed consistently and continuously. Each service route has its own characteristics related to the type of service and the characteristics of the routes served. The purpose of this research is to find out the quality of service in the comparison of service routes so that it becomes a consideration in calculating the quality of Trans Metro Pekanbaru public transportation services. The limitation of this study is to only compare two travel routes, namely route 2 which connects BRPS-Kulim Terminal (commercial route) and route 3 which connects Suska Panam Ramayana-UIN (commercial and educational routes). IPA analysis (Importance-Performance Analysis) is used to determine the quality of service between Trans Metro Pekanbaru travel routes so as to facilitate the prioritization of Trans Metro in improving its services for each service route. The study sample was 279 people for each route. The results of the study show that there are differences in each route. In general, this is because passengers giving reasons for their interest in using Trans Metro Pekanbaru are more attractive than other modes. Thus, the strategy of improving quality in terms of service time is a serious concern for Trans Metro Pekanbaru to achieve a better transportation system and towards sustainable transportation in the city of Pekanbaru.

Kajian Potensi Kerusakan Lingkungan Fisik Akibat Penambangan Breksi Batu Apung , Di Desa Segoroyoso, Kec. Pleret, Kab. Bantul, Provinsi DIY Candra, Agus
JURNAL SAINTIS Vol 18 No 1 (2018)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2018.vol18(1).3193

[ID] Sumber daya alam merupakan salah satu modal dasar dalam pembangunan nasional.  Oleh karena itu harus dimanfaatkan sebesar-besarnya untuk kepentingan rakyat dengan memperhatikan kelestarian lingkungan hidup sekitarnya. Sumber daya alam di Indonesia cukup banyak dan melimpah sehingga terkadang sebagian dieksploitasi secara besar-besaran untuk kebutuhan pembangunan. Penambangan breksi batuapung di Desa Segoroyoso, Kecamatan Pleret Kabupaten Bantul dilakukan secara tradisional. Penambangan dilakukan tanpa memperhatikan keselamatan dan kelestarian fungsi lingkungan sangat mengkhawatirkan disamping kondisi lahan yang semakin kritis dan berdampak terhadap kerusakan lahan disekitar penambangan. Kerusakan yang dapat ditimbulkan akibat dari kegiatan penambangan breksi batuapung adalah dapat merusak komponen-komponen lingkungan fisik yang ada, seperti tanah, batuan, vegetasi yang ada pada kawasan tersebut dan menimbulkan kerusakan terhadap kelestarian fungsi lingkungan. Metode yang digunakan dalam penelitian ini adalah metode survey, pemetaan, dan analisis dengan menggunakan pengharkatan (scoring) yang mengacu pada Kep. Gub. Prop. DIY No. 63 Tahun 2003. Parameter yang digunakan untuk menentukan tingkat kerusakan lingkungan fisik penambangan breksi batuapung adalah  Batas kedalaman lubang galian, Penyelamatan tanah pucuk, Relief dasar galian, Batas kemiringan tebing galian, tinggi dinding galian, upaya reklamasi, kondisi jalan, aksesibilitas. Tingkat kerusakan lingkungan fisik akibat penambangan breksi batuapung diperoleh dari hasil penjumlahan skor setiap parameter. Kriteria kerusakan dibagi menjadi 3 tingkat, yaitu: Tingkat I dengan kriteria rusak ringan, Tingkat II dengan kriteria rusak sedang, dan Tingkat III dengan kriteria rusak berat. Berdasarkan hasil scoring dari parameter yang tercantum di atas, penelitian ini menunjukan bahwa yang sangat mempengaruhi potensi kerusakan lahan akibat penambangan breksi batuapung di Desa Segoroyoso, Kec. Pleret, Kab. Bantul adalah tinggi dinding galian, kemiringan dinding galian, upaya reklamasi dan relief dasar galian, hampir disetiap lokasi penelitian (blok-1, blok-2, blok-3) mempunyai harkat 2 dan 3 dengan kriteria rusak ringan dan rusak berat, sedangkan untuk parameter pengelolaan tanah pucuk, kedalaman galian, kondisi jalan dan aksesibilitas mempunyai harkat 1 dengan kriteria baik. [EN] Natural resources are one of the basic capital in national development. Therefore it must be utilized as much as possible for the benefit of the people by paying attention to the preservation of the surrounding environment. Natural resources in Indonesia are quite large and abundant so that sometimes some are exploited on a large scale for development needs. The pumice breccia mining in Segoroyoso Village, Pleret District, Bantul Regency is done traditionally. Mining is carried out without regard to the safety and preservation of environmental functions which is very worrying in addition to the increasingly critical land conditions and the impact on land damage around the mine. The damage that can be caused due to mining activities of pumice breccia is that it can damage the components of the existing physical environment, such as soil, rocks, vegetation in the area and cause damage to the preservation of environmental functions. The method used in this study is the method of surveying, mapping, and analysis using scoring which refers to Kep. Gub. Prop. DIY No. 63 of 2003. Parameters used to determine the level of damage to the physical environment of mining of pumice breccia are the depth limit of excavation holes, Rescue of topsoil, Relief base of excavation, Slope limit of rock excavation, High wall excavation, Reclamation efforts, Road conditions, accessibility. The level of damage to the physical environment due to mining of pumice breccia is obtained from the sum of the scores of each parameter. Damage criteria are divided into 3 levels, namely: Level I with criteria for minor damage, Level II with criteria for moderate damage, and Level III with criteria for severe damage. Based on the scoring results of the parameters listed above, this study shows that it greatly affects the potential for land damage due to mining of pumice breccia in Segoroyoso Village, Kec. Pleret, Kab. Bantul is the height of the excavation wall, slope of the excavation wall, reclamation and relief baseline excavation, almost every study location (block-1, block-2, block-3) has a value of 2 and 3 with criteria of minor damage and severe damage, while for parameters management of topsoil, depth of excavation, road conditions and accessibility have a rating of 1 with good criteria.  

Penerapan Model Horton Untuk Kuantifikasi Laju Infiltrasi Annisa, Bismi
JURNAL SAINTIS Vol 18 No 1 (2018)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2018.vol18(1).3198

[ID] Kapasitas infiltrasi akan semakin menurun bila bidang resapan air semakin berkurang. Dampaknya limpasan air hujan yang menjadi aliran permukaan akan semakin meningkat. Konsep perencanaan yang memperbesar air hujan meresap ke dalam tanah akan mampu mengurangi aliran permukaan. Penelitian ini bertujuan untuk kuantifikasi laju infiltrasi air hujan dengan menerapkan model Horton. Metode yang dilakukan adalah uji sampel di lapangan terhadap laju infiltrasi pada bidang tanah yang tidak ada lubang resapan dan bidang tanah yang diberi lubang resapan. Dimensi lubang resapan adalah diameter (Ø) 3 inchi, 4 inchi, dan 8 inchi dengan kedalaman 1,1 m menggunakan alat ukur double ring infiltrometer. Metode perhitungan menggunakan rumus infiltrasi Horton. Dapat disimpulkan bahwa lubang resapan berpengaruh terhadap peningkatkan laju infiltrasi air hujan ke dalam tanah, sehingga dapat meningkatkan daya resap air ke tanah. Laju infitrasi model Horton pada lubang resapan Ø 3 inchi, Ø 4 inchi, Ø 8 inchi dan tanpa lubang resapan adalah  f (t) = 0,55+0,45e-14t ; f (t) = 0,4+1,5e-19,5 t ;  f (t) = 2,3+1,8e-46t ; dan f (t) = 0,28+0,72e-10,7t. Nilai laju infiltrasi yang paling besar hingga paling kecil adalah f (0) = 4,1 m/jam (pada Ø 8 inchi); f (0) = 1,9 m/jam (pada Ø 4 inchi); f (0) = 1 m/jam (pada Ø 3 inchi); dan f (0) = 1 m/jam (tanpa lubang resapan). Perbandingan akumulasi waktu laju infiltrasi terhadap lubang resapan Ø 8 inchi adalah 3,8 kali lebih lambat (pada Ø 3 inchi), 3,6 kali lebih lambat (pada Ø 4 inchi), dan 6,63 kali lebih lambat (tanpa lubang resapan). [EN] Infiltration capacity will decrease if the water absorption field decreases. The impact of rainwater runoff which becomes surface runoff will increase. The concept of planning that enlarges rainwater seeps into the ground will be able to reduce surface flow. This study aims to quantify the rate of infiltration of rainwater by applying the Horton model. The method used is a sample test in the field against the infiltration rate in the field of land where there are no infiltration holes and soils are given infiltration holes. The dimensions of infiltration holes are diameter (Ø) 3 inches, 4 inches, and 8 inches with a depth of 1.1 m using a double ring infiltrometer measuring instrument. Calculation method using Horton infiltration formula. It can be concluded that infiltration holes affect the rate of infiltration of rainwater into the soil, so that it can increase the absorption rate of water to the ground. Inflation rate of Horton model in infiltration hole Ø 3 inches, Ø 4 inches, Ø 8 inches and without infiltration hole is f (t) = 0.55 + 0.45e-14t; f (t) = 0.4 + 1.5e-19.5 t; f (t) = 2.3 + 1.8e-46t; and f (t) = 0.28 + 0.72e-10.7t. The value of the largest infiltration rate to the smallest is f (0) = 4.1 m / hour (at Ø 8 inches); f (0) = 1.9 m / hour (at Ø 4 inches); f (0) = 1 m / hour (at Ø 3 inches); and f (0) = 1 m / hour (without infiltration holes). Comparison of accumulated infiltration time to infiltration hole Ø 8 inches is 3.8 times slower (at Ø 3 inches), 3.6 times slower (at Ø 4 inches), and 6.63 times slower (without infiltration holes).

Analisa Penggunaan Sumber Daya Manusia Dengan Metode Resource Leveling Pada Pelaksanaan Proyek Konstruksi (Studi Kasus : Proyek Pembangunan Ruang Kelas Baru Ponpes Daarun Nahdah Thawalib Bangkinang) Retno, Deddy Purnomo; Astuti, Astuti; Tamimi, Zulfadli
JURNAL SAINTIS Vol 18 No 1 (2018)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2018.vol18(1).3194

[ID] Tenaga kerja merupakan salah satu sumber daya manusia yang penting, karena seringkali penyediaannya terbatas, baik karena faktor kualitas maupun hal-hal lain. Kemudian kelebihan tenaga keja akan mengakibatkan pemborosan biaya serta kekurangan tenaga kerja akan mengakibatkan keterlambatan pelaksanaan proyek yang telah dijadwalkan. Tujuan tugas akhir ini adalah untuk menentukan sumber daya manusia yang efektif dalam pelaksanaan proyek Pembangunan Ruang Kelas Baru Ponpes Daarun Nahdah Thawalib Bangkinang, dan untuk mengetahui berapa banyak biaya yang diperlukan untuk kebutuhan penggunaan sumber daya manusia. Metode Perataan Sumber Daya (Resource Leveling) dapat digunakan untuk mendapatkan histogram penggunaan tenaga kerja yang efektif dalam pelaksanaan proyek konstruksi sehingga tidak terjadi penurunan dan peningkatan penggunaan tenaga kerja diawal, ditengah dan diakhir jadwal pelaksanaan pekerjaan. Proses Resource Leveling dilakukan menggunakan bantuan aplikasi Microsoft Project 2013. Dari hasil penelitian diperoleh penggunaan tenaga kerja rencana dan tenaga keja setelah perataan (leveling) yaitu sebanyak 790 orang dengan biaya sebesar Rp. 375.270.000,00 yang terdiri dari 470 orang pekerja dengan biaya sebesar Rp. 207.270.000,00 dan 320 orang tukang dengan biaya sebesar Rp. 168.000.000,00. Sedangkan tenaga kerja realisasi atau lapangan sebanyak 831 orang dengan biaya sebesar Rp. 382.011.000,00 yang terdiri dari 646 orang pekerja dengan biaya sebesar Rp. 284.886.000,00  dan 185 orang tukang dengan biaya sebesar Rp. 97.125.000,00. Dengan demikian tenaga kerja rencana dan setelah perataan lebih hemat biaya sebesar Rp. 6.741.000,00 dibandingkan tenaga kerja realisasi. [EN] Labor is one of the most important human resources, because it is often limited in provision, both because of the quality factor and other things. Then the excess work force will lead to waste of costs and labor shortages will result in delays in the implementation of projects that have been scheduled. The purpose of this thesis is to determine the effective human resources in the implementation of the New Classroom Building Project Ponpes Daarun Nahdah Thawalib Bangkinang, and to find out how much cost is needed for the needs of human resource use. Resource Leveling Methods can be used to obtain an effective employment histogram in the implementation of a construction project so that there is no decrease and increased use of labor at the beginning, middle and end of the job execution schedule. The Resource Leveling process is done using Microsoft Project 2013 help. From the result of the research, it is found that the use of workforce of plan and work force after leveling is 790 people with the cost of Rp. 375,270,000.00, consisting of 470 workers at a cost of Rp. 207.270.000,00 and 320 craftsmen at a cost of Rp. 168,000,000.00. While the labor realization or field as many as 831 people with a fee of Rp. 382.011.000,00 consisting of 646 workers with a fee of Rp. 284,886,000,00 and 185 carpenters at a cost of Rp. 97.125.000,00. Thus the workforce of the plan and after smoothing is more cost effective at Rp. 6,741,000.00 compared to realization workforce.

Perbandingan Kuat Tekan Dan Kuat Lentur Beton Mutu Tinggi Dengan Menggunakan Berbagai Merk Semen Di Kota Pekanbaru Mildawati, Roza
JURNAL SAINTIS Vol 18 No 1 (2018)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2018.vol18(1).3195

[ID] Concrete is a very popular building material used in the world of construction services, consisting of a mixture of Portland Cement (PC) or other hydraulic cement, fine aggregates, coarse aggregates and water, with or without using additional materials. The quality of materials such as cement also greatly affects the strength of the concrete after hardening, so the selection of cement quality must be in accordance with the concrete planning regulations in order to obtain optimal results. In Indonesia there are many new cement factories that produce to meet the needs of the community, one of which is the Conch brand cement. So in connection with the above, Conch cement can be examined to compare the value of compressive strength and flexural strength with old cement, namely cement Padang, Tiga Roda, Holcim and Bosowa which are generally always used in concrete planning at this time.The purpose of this study was to determine the comparison of compressive strength and flexural strength of the concrete and the multiplier between cement Padang, Three Wheels and Conch at 28 days of age. In this study using the method SNI 03-2834-2000. With cylindrical test specimens (150 mm x 300 mm) and size beams (150 mm x 150 mm x 600 mm) three specimens were made for each cement.The maximum concrete compressive strength is found in Padang cement with a compressive strength of 45.86 Mpa, for the minimum compressive strength found in Tiga Roda cement with compressive strength value of 40.19 Mpa and for the compressive strength of cement Conch there is a second with compressive strength value 42.84 Mpa. From the explanation above, the results of 28 days of concrete compressive strength with each cement brand still not reached the planned concrete compressive strength of 38 MPa. The maximum concrete flexural strength is found in Padang cement with a flexural strength value of 5.03 Mpa, for a minimum flexural strength value found in Tiga Roda cement with a flexural strength value of 3.96 Mpa and for the value of Conch cement compressive strength there is a second with flexural strength 4.43 Mpa. From the explanation above, the results of 28 days of concrete flexural strength with each cement brand that has not reached the 4.4 Mpa plan, namely the three-wheeled cement brand. [EN] Concrete is a very popular building material used in the world of construction services, consisting of a mixture of Portland Cement (PC) or other hydraulic cement, fine aggregates, coarse aggregates and water, with or without using additional materials. The quality of materials such as cement also greatly affects the strength of the concrete after hardening, so the selection of cement quality must be in accordance with the concrete planning regulations in order to obtain optimal results. In Indonesia there are many new cement factories that produce to meet the needs of the community, one of which is the Conch brand cement. So in connection with the above, Conch cement can be examined to compare the value of compressive strength and flexural strength with old cement, namely cement Padang, Tiga Roda, Holcim and Bosowa which are generally always used in concrete planning at this time.The purpose of this study was to determine the comparison of compressive strength and flexural strength of the concrete and the multiplier between cement Padang, Three Wheels and Conch at 28 days of age. In this study using the method SNI 03-2834-2000. With cylindrical test specimens (150 mm x 300 mm) and size beams (150 mm x 150 mm x 600 mm) three specimens were made for each cement.The maximum concrete compressive strength is found in Padang cement with a compressive strength of 45.86 Mpa, for the minimum compressive strength found in Tiga Roda cement with compressive strength value of 40.19 Mpa and for the compressive strength of cement Conch there is a second with compressive strength value 42.84 Mpa. From the explanation above, the results of 28 days of concrete compressive strength with each cement brand still not reached the planned concrete compressive strength of 38 MPa. The maximum concrete flexural strength is found in Padang cement with a flexural strength value of 5.03 Mpa, for a minimum flexural strength value found in Tiga Roda cement with a flexural strength value of 3.96 Mpa and for the value of Conch cement compressive strength there is a second with flexural strength 4.43 Mpa. From the explanation above, the results of 28 days of concrete flexural strength with each cement brand that has not reached the 4.4 Mpa plan, namely the three-wheeled cement brand.

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Abstract

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Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Augusta Adha

Contact Email augusta.adha@eng.uir.ac.id

Phone -

Journal Mail Official saintis@journal.uir.ac.id

Editorial Address -

Location Kota pekanbaru, Riau INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Augusta Adha

Contact Email
augusta.adha@eng.uir.ac.id

Phone
-

Journal Mail Official
saintis@journal.uir.ac.id

Editorial Address
-

Location
Kota pekanbaru,

Riau

INDONESIA