scholarly journals PERENCANAAN PONDASI TIANG PANCANG GEDUNG DINAS TENAGA KERJA DAN TRANSMIGRASI

2020 ◽  
Vol 3 (1) ◽  
pp. 23
Author(s):  
Ahmada Khotibul Umam ◽  
Sigit Winarto ◽  
Ahmad Ridwan ◽  
Agata Iwan Candra
Keyword(s):  
Standard Penetration Test ◽  
Building Construction ◽  
Penetration Test ◽  
Cross Sectional ◽  
Calculation Results ◽  
Building Load ◽  
Heavy Loads ◽  
Control Stability ◽  
The Stability ◽  
The Right

The foundation has an important role in the field of construction. The function of the foundation is to transport the building load to the subgrade, so the foundation must be planned with the right calculation so that the building is safe and stable. Pile foundation is one type of foundation used in building construction with heavy loads. In research, land investigations use SPT (Standard Penetration Test). The calculations include the carrying capacity of the soil, the loading of buildings, the dimensions and depth of the pile, and the stability of the controls. Calculation results obtained, loading on floors 1 to 3, totaling 4,463.5 Tons. The dimensions of the foundation are 0.6, with a cross-sectional area of 0.28274334 and a depth of 18 M. The need for strengthening the foundation is 600059.7 Kg. With bolt control stability 24,620 Tons / M2 > 1.5 Tons / M2 – >   Safe, shear  9,156 Tons / M2  > 0,156 Tons / M2 –  > Safe.Pondasi memiliki peranan penting dalam bidang konstruksi. Fungsi pondasi sendiri yaitu meneruskan beban bangunan ke tanah dibawah pondasi menjadikan pondasi harus direncanakan dan diperhitungkan dengan tepat agar bangunan yang didirikan aman dan stabil. Salah satu jenis pondasi yang banyak digunakan yaitu pondasi tiang pancang. Pondasi tiang pancang merupakan salah satu jenis pondasi dalam yang banyak digunakan pada konstruksi yang memiliki beban berat. Dalam penelitian, penyelidikan tanah menggunakan metode SPT (Standart Penetration Test). Perhitungan yang dilakukan meliputi perhitunagn daya dukung tanah, Pembebanan bangunan, dimensi dan kedalaman tiang pancang, serta stabilitas control. Hasil dari perhitungan didapat, pembebanan lantai 1 sampai 3 sebesar 4663,5 Ton. Dimensi pondasi sebesar 0,6 M dengan luas penampang 0,28274334 M dan kedalaman 18 M. Kebutuhan tulangan pondasi yaitu 600059,7 Kg. Dengan stabilitas kontrol terhadap guling 24,620 Ton / M2 > 1.5 Ton / M2 – >   Aman, Gaya terhadap geser 9,156 Ton / M2  > 0,156 Ton / M2 –  > Aman.

scholarly journals Analysis Of Geoelectrical And Soil Test Data To Determine Subsurface Conditions In Makassar City, South Sulawesi

Khazanah ◽  
2020 ◽  
Vol 12 (2) ◽  
Author(s):  
Jefri nainggolan ◽  
◽  
Muhammad Fajar ◽  
Keyword(s):  
Water Content ◽  
Sandy Loam ◽  
Standard Penetration Test ◽  
Special Treatment ◽  
Test Results ◽  
Penetration Test ◽  
Resistivity Tomography ◽  
South Sulawesi ◽  
Laboratory Test Results ◽  
The Stability

Research has been carried out to determine subsurface conditions. The research objective was to determine the physical properties of the soil in order to evaluate and provide recommendations for solving foundation problems. The methods are the resistivity geoelectric and IP geoelectric method (induced polarization) with ERT (Electrical Resistivity Tomography), SPT (Standard Penetration Test) and laboratory test results. The results of the resistivity values obtained varied in the range from 17.0 - 172.0 ohm m with a depth of 0 m - 2.87 m, most of which were interpreted as alluvium soil, namely sandy loam. This is reinforced by the results of the IP method where the low chargebility value is around 0.130 - 4.70 msec. In addition, it was found that from the SPT test, it was obtained that the variation of blows from 14 to 21 N at a depth of 0 - 5.50 meters and >60 N from a depth of 5.50 - 20 m which stated that most of them consisted of clay and sandstones. Then based on laboratory tests, it was found that at a depth of 3 - 3.5 meters it consisted of 86.47% clay with a plastic limit of 37.07% and the water content was 39.41%, while at a depth of 9 -9.5 meters it consisted of sandstones which the characteristic is non- plastic with a water content of up to 72.04%. It is concluded that the surface soil is conductive, it is necessary to hold special treatment for this type of soil in order to avoid erosion when it is saturated with water and it is hoped that the stability of the soil will be better. One of two ways is by mixing high density soil and making a "chicken claw" foundation to strengthen the foundation with a depth of more than 5.0 meters. Keywords: Geoelectric, Standard Penetration Test, Resistivity, Chargebility, Foundation.

Meningkatkan Daya Dukung Tiang Pondasi Minipile Persegi Pada Gedung Kantor Ngasem Kabupaten Kediri Menggunakan Metode Mayerhoff

2021 ◽  
Vol 4 (2) ◽  
pp. 41
Author(s):  
Erwin Dwi Laksana ◽  
Edy Gardjito ◽  
Suwarno Suwarno ◽  
Faiz Muhammad Azhari ◽  
Imam Mustofa
Keyword(s):  
Bearing Capacity ◽  
Soil Type ◽  
Building Construction ◽  
Office Building ◽  
Cross Sectional ◽  
Cross Sectional Dimension ◽  
Pile Cap ◽  
Calculation Results ◽  
Foundation Pile ◽  
Hard Soil

The foundation is one part under the building that has a very important role. The choice of the type of foundation is something that needs to be considered. One type of foundation that is widely used is the minipile foundation. Minipile foundation itself is a type of foundation that is used if the load received from the superstructure is not too heavy and the hard soil type is at a depth of between 5-10m. The purpose of this study was to plan the bearing capacity of the minipile foundation pile in the PT. BPJE in Ngasem, Kediri Regency. The building is planned to be used as an office building. The planned sub-building includes foundation planning with a mini-square building with a cross-sectional dimension of 20x20. The calculations carried out include the calculation of the bearing capacity of the foundation using the Mayerhoff method, the calculation of the flexural factor and the calculation of reinforcement. The calculation results (sigma Vertical Ultimate) Vu = 114.78 tons. With bending factor tk = 286.95 kg /. The reinforcement in the pile cap for the x direction of tensile reinforcement = D16–170 and compression reinforcement = D16–250 while for tensile reinforcement in the y direction = D16 - 170 and compressive reinforcement = D10 - 250. Thus, the results of the planning can be used as a reference for the implementation of building construction. office of PT. BPJE in Ngasem, Kediri Regency.

scholarly journals Assessment of Spinal Range of Motion and Musculoskeletal Discomfort in Forklift Drivers. A Cross-Sectional Study

2021 ◽  
Vol 18 (6) ◽  
pp. 2947
Author(s):  
Juan Rabal-Pelay ◽  
Cristina Cimarras-Otal ◽  
Noel Marcen-Cinca ◽  
Andrés Alcázar-Crevillén ◽  
Carmen Laguna-Miranda ◽  
...  
Keyword(s):  
Range Of Motion ◽  
Movement Pattern ◽  
Cross Sectional Study ◽  
Office Workers ◽  
Control Group ◽  
Lateral Bending ◽  
Musculoskeletal Discomfort ◽  
Cross Sectional ◽  
Heavy Loads ◽  
The Right

Forklifts are commonly used in industrial supply chains to transport heavy loads. Forklift drivers have the risk of developing musculoskeletal discomfort derived from the movement pattern required at work. This research aimed to investigate the spinal range of motion (ROM) and musculoskeletal discomfort of forklift drivers and compare it with a control group. Forklift drivers (39 males) and office workers (31 males) were recruited to assess cervical, thoracic, and lumbar ROM with an electronic double inclinometer. Additionally, musculoskeletal discomfort was registered with the Cornell Discomfort Musculoskeletal Questionnaire. Forklift drivers showed a higher cervical discomfort and ROM of lateral lumbar bending than office workers. Both groups reported lower ROM in cervical and lumbar lateral bending on the right side versus the left side. No differences of asymmetry were reported for any variable between groups. Specific exercise programs may correct these mobility imbalances.

scholarly journals Use of the bar chart/S-curve and computerized precedence diagram method on scheduling and controlling building construction projects by contractors: a cross-sectional study

F1000Research ◽  
2021 ◽  
Vol 10 ◽  
pp. 284
Author(s):  
Putri Lynna Adelinna Luthan ◽  
Nathanael Sitanggang ◽  
Abdul Hamid ◽  
Bambang Hadibroto
Keyword(s):  
Construction Projects ◽  
Critical Path ◽  
Cross Sectional Study ◽  
Building Construction ◽  
Project Work ◽  
Cross Sectional ◽  
Diagram Method ◽  
Study Programs ◽  
S Curve ◽  
The Right

Background: Building construction projects have very complex activities, so they require precise and accurate methods of scheduling and control. Using the right method, the project executor can carry out the project according to plan and any schedule deviations can be controlled effectively. This study aims to compare the effectiveness of using the bar chart/S-curve and computerized precedence diagram method (PDM) on scheduling and controlling building construction projects. Methods: The use of the two methods and their effectiveness during project work were analysed using a survey directed to building construction workers. Results: A total of 50 workers completed the survey. The use of PDM (using Microsoft Project) was significantly more effective than the bar chart/S-curve method in scheduling building construction projects (t count 15.516> t table 2.660) and controlling building construction projects (t count 17.233> t table 2.660). In addition, PDM was associated with allowing the project to find the critical path more quickly, overcoming project delays more effectively. Conclusions: By using PDM, a on a building construction project’s schedule for the implementation of the work can be changed immediately, if there is a delay or deviation of work. The findings of this study are useful for construction service companies and the development of construction management science in civil engineering study programs.

scholarly journals ANALISIS METODE PENGGALIAN PADA MATERIAL LUNAK DENGAN MENGGUNAKAN PC 2000 HINGGA PC 4000 DI TAMBANG LATI, PT BERAU COAL

2020 ◽  
Vol 1 (1) ◽  
pp. 103-112
Author(s):  
Welly Turupadang ◽  
Ichsan Sebastian ◽  
Nur Alim K ◽  
Bagus Rachmad ◽  
Komang Yogatama
Keyword(s):  
Soft Materials ◽  
Standard Penetration Test ◽  
Soft Material ◽  
Open Pit ◽  
Open Pit Mining ◽  
Penetration Test ◽  
Mining Operations ◽  
Cross Sectional ◽  
Production Target ◽  
Operational Aspects

ABSTRAK  Tambang Lati merupakan bukaan pit terbesar yang dioperasikan oleh PT Berau Coal (PT BC) dengan target produksi batubara pada tahun 2019 sebesar 14,2 juta Metrik Ton (M/T) dan Stripping Ratio (SR) 12,5. Untuk memenuhi target produksi tersebut, maka diperlukan pengembangan lokasi baru dengan total luas bukaan sekitar 187 ha. Distribusi luasan tersebut meliputi 61% atau sekitar 114 ha merupakan area pengembangan pit berupa material  lunak / rawa dengan estimasi volume yang harus dipindahkan sekitar 14 juta Bank Cubic Meter (BCM), sedangkan sisanya merupakan morfologi area perbukitan gelombang rendah – sedang, hal ini dicirikan adanya dataran luas dengan perbukitan di sekitarnya. Ketersediaan alat gali dan muat yang besar (PC 2000 – PC 4000) di Lati mengakibatkan jumlah material untuk kebutuhan timbunan perlapisan jalan maupun front loading di area rawa (layering) yang digunakan menjadi lebih besar dari perencanaan awal. Hal ini mempengaruhi Stripping Ratio  (SR) yang sangat signifikan dan tingkat keekonomisan Tambang Lati PT Berau Coal. Evaluasi dilakukan dengan menggunakan data material insitu (tanah lunak / rawa) yang diperoleh dari hasil pemboran Standard Penetration Test (SPT). Penampang atau profil material lunak/ rawa dapat dikelompokkan berdasarkan data hasil pemboran ini, sehingga diperoleh distribusi penyebarannya dan dapat ditentukan secara vertikal maupun horizontal. Distribusi data penampang atau profil material lunak/rawa digunakan pada analisis geoteknik yang dikombinasikan terhadap aspek keselamatan dan operasional dari unit yang digunakan serta dilakukan percobaan langsung di lapangan selama 2 bulan pada lokasi yang acak. Penelitian ini mengevaluasi tingkat kestabilan lereng material lunak/endapan rawa, optimalisasi metode penggalian serta  layering  sehingga dapat mengakomodasi berbagai kepentingan, khususnya aspek keselamatan dan keekonomisan tambang. Hasil penelitian menunjukkan bahwa loading material lunak / rawa yang mengkombinasikan hasil kajian geoteknik dan aspek operasional dapat bersinergi sehingga operasional penambangan dapat dilakukan secara aman, efisien dan ekonomis dengan menggunakan alat besar (PC2000 – PC4000) yang tersedia di Lati Mine Operation. Kata kunci : Tambang Lati, Tanah Lunak, Rawa, PT Berau Coal, Stripping Ratio, Standard Penetration Test, Loading rawa, PC 2000, PC 2500, PC 3600 dan PC 4000.  ABSTRACT Lati Mine Operation is the largest open-pit mining operated by PT Berau Coal (PT BC) with a coal production target in 2019 of 14.2 million Metric Tons (M / T) and Stripping Ratio (SR) 12.5. To meet the production target, it is necessary to develop a new location with a total open-pit area of around 187 ha. 61% or around 114 ha of the area are development zones consisting of 14 million Bank Cubic Meters (BCM) of soft materials, while the rest is the morphology of low-moderate hills, this is characterized by a vast plain surrounded by hills. The availability of large excavator and hauler equipment (PC 2000 - PC 4000) to move the overburden materials causes the amount of material for layering needs exceeds the initial plan. This condition will affect Stripping Ratio (SR), which has a significant effect on the economic level of Lati Mine. An evaluation is carried out using insitu data (soft materials) obtained from the results of the Standard Penetration Test (SPT) drilling. Cross section of the soft materials can be grouped by drilling data, so that distribution is obtained and can be vertically or horizontally determined at the Lati mine site. Cross-sectional or soft materials profiles data distribution are then used in the geotechnical analysis combined with the safety and operational aspects of the used-units which had field trial for 1 month at many random locations. This study evaluated the stability of soft materials and the optimization of digging and layering methods so that it can accommodate various interests, especially the mining safety and economic aspects. The results show that soft materials loading which combines the results of geotechnical studies and operational aspects can synergize so that mining operations can be carried out safely, efficiently and economically by large equipment available in Lati Mine Operation. Keywords : Lati Mine Operation, Soft Material, PT Berau Coal, Stripping Ratio, Standard Penetration Test, Soft Material Loading, PC 2000, PC 2500, PC 3600 and PC 4000.

Pengaruh konsep diri, self efficacy dan motivasi terhadap Learning outcome mata pelajaran Aqidah Akhlak di kelas XI MA Pacet Mojokerto

2017 ◽  
Vol 1 (1) ◽  
pp. 37
Author(s):  
Happy Ikmal
Keyword(s):  
Learning Outcomes ◽  
Significant Relationship ◽  
Self Efficacy ◽  
Teaching And Learning ◽  
Regression Coefficient ◽  
T Test ◽  
Self Concept ◽  
Working Hypothesis ◽  
Calculation Results ◽  
The Right

Teaching and learning activities is a conscious activity and aims. Therefore, for these activities can be run well and achieve the expected goals, it must be done with the strategy or the right learning approach .. The purpose of this study were: 1) to describe the influence of Self-Concept on the results of studying chemistry at Class XI MA Pacet Mojokerto. 2) Describe the effect of self-efficacy on Learning outcomes chemistry in Class XI MA Pacet Mojokerto 3) Describe the effect of motivation on Learning outcomes chemistry in Class XI MA Pacet Mojokerto 4) Describe the relationship Self-concept, self-efficacy and motivation to Results studied chemistry at Class XI MA Pacet Mojokerto. From the results of the analysis can be summarized as follows: 1) There is a significant relationship between self-concept of the Learning outcomes chemistry inquiry model. T test against self-concept variables (X1) obtained regression coefficient (B) 0.440 (44.0%), coefficient (Beta) 0.091, tcount of 0.378 with significance 0.006 t. Because of the significance of t less than 5% (0.007 <0.05), the Nil Hypothesis (H0) is rejected and working hypothesis (Hi) is received. 2) There is a significant relationship between self-efficacy toward chemistry Learning outcomes inquiry model. T test for Self-efficacy variable (X2) obtained regression coefficient (B) 0.329 (32.9%), coefficient (Beta) 0.124, tcount of 0.436 with a significance of 0.009 t. Because of the significance of t less than 5% (0.008 <0.05), the Nil Hypothesis (H0) is rejected and working hypothesis (Hi) is received. 3) There is a significant relationship between motivation to learn chemistry results inquiry model. T test for motivation variable (X3) obtained regression coefficient (B) 0.130 (13.0%), coefficient (Beta) 0.065, tcount of 0.230 with a significance of 0.001 t. Because of the significance of t less than 5% (0.001 <0.05), the Nil Hypothesis (H0) is rejected and working hypothesis (Hi) received 4) From the calculation results obtained Fhitung value 2,249 (significance F = 0.001). So Fhitung> F table (2,249> 2:03) or Sig F <5% (0.001 <0.05). It means that together independent variables consisting of variable self-concept (X1), Self-efficacy (X2), motivation (X3) simultaneously to variable results of studying chemistry (Y).

Symmetrizable Difference Dchemes

2005 ◽  
Vol 5 (1) ◽  
pp. 3-50 ◽  
Author(s):  
Alexei A. Gulin
Keyword(s):  
Initial Data ◽  
Difference Scheme ◽  
Difference Schemes ◽  
Time Dependent ◽  
Stability Boundaries ◽  
Typical Representative ◽  
Variable Weight ◽  
The Stability ◽  
Conditions Of Stability ◽  
The Right

AbstractA review of the stability theory of symmetrizable time-dependent difference schemes is represented. The notion of the operator-difference scheme is introduced and general ideas about stability in the sense of the initial data and in the sense of the right hand side are formulated. Further, the so-called symmetrizable difference schemes are considered in detail for which we manage to formulate the unimprovable necessary and su±cient conditions of stability in the sense of the initial data. The schemes with variable weight multipliers are a typical representative of symmetrizable difference schemes. For such schemes a numerical algorithm is proposed and realized for constructing stability boundaries.

Pemanfaatan Metil Ester Sulfonat pada Pembuatan Deterjen Cair

2016 ◽  
Vol 7 (14) ◽  
pp. 143-155
Author(s):  
Eldha Sampepana ◽  
Suroto Hadi Saputra
Keyword(s):  
Fatty Acids ◽  
Methyl Ester ◽  
Linear Alkylbenzene Sulfonate ◽  
Emulsion Stability ◽  
Alcohol Sulfate ◽  
Stable Emulsion ◽  
Linear Alkylbenzene ◽  
Alkylbenzene Sulfonate ◽  
The Stability ◽  
The Right

In the manufacture of detergents still using surfactants (which serves as an emulsifier) of crude oil in the form of the AS. (alcohol sulfate) and LAS (linear alkylbenzene sulfonate), where this type of surfactant cannot be degraded by microorganisms when discharged into the environment, causing environmental pollution. Methyl ester sulfonate surfactant is an anionic surfactant which has a composition of C16 - C18 fatty acids are capable of acting against nature deterjensinya, while the C12 - C14 fatty acids contribute to the foaming effect. The purpose of this study was to look for the formulation of methyl ester sulfonate (MES) the right to produce a good detergent by using materials such as methyl ester sulfonate surfactant self-made, methyl ester sulfonate and sodium lauryl market Ester Sulfate (SLS) with a concentration of 15 %, 20 % and 25 %. Detergent results of the study have high detergency ( net ) compared with the detergency of detergent commercial, have a stable emulsion stability, the stability of the foam/foam detergent power made from methyl ester sulfonate surfactant produces less foam, compared with a detergent made from SLS and surfactant SNI 06-4075-1996 standards.

UPAYA PENINGKATAN KINERJA PERAWAT GAWAT DARURAT MELALUI BERBAGAI GAYA KEPEMIMPINAN DI RSUD DAERAH ISTIMEWA YOGYAKARTA

2017 ◽  
Vol 6 (3) ◽  
pp. 186-194
Author(s):  
Deby Zulkarnain Rahadian Syah ◽  
Muhamat Nofiyanto
Keyword(s):  
Emergency Room ◽  
Leadership Style ◽  
Quantitative Research ◽  
Secondary Data ◽  
Cross Sectional ◽  
Organizational Goals ◽  
Democratic Leadership ◽  
The Right ◽  
Research Type ◽  
Special Region

Background: Nurses in charge of the Emergency Room are required to have more ability than nurses serving patients in other units. Emergency Room is an initial service in a hospital. One's leadership style will greatly affect the effectiveness of a leader. The selection of the right leadership style can lead to the achievement of individual or organizational goals. Objective: To know the various leadership style used by the head of room in improving the performance of nurses of Emergency Room RSUD in in Special Region of Yogyakarta. Method: This research includes quantitative research type, using cross sectional approach. The population of this study was the head of the treatment room. Secondary data of nurse's performance is taken from nursing care which is written in medical record file of Emergency Room of RSUD in Special Region of Yogyakarta. Results: The performance of nurses at Emergency Room RSUD A in the good category was 100%. The performance of nurses at Emergency Room RSUD B in the enough category was 45%. The performance of nurses at Emergency Room C in good category was 80%. The performance of nurses at Emergency Room RSUD D in good category was 55%. The performance of nurses at RSUD E in the good category was 95%. The result of cross tabulation between leadership style and nurse performance of RSUD in the whole DIY with good performance is leader who use democratic leadership style equal to 35%. Conclusion: Most of the nurse's good performance in Emergency Room is followed by democratic leadership style of head of space.  Keyword: leadership style, head of space, performance of nurses

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