scholarly journals Rancang Bangun Grade Monitoring Assist pada D3K Caterpillar Berbasis Mikrokontroler sebagai Akurasi pada Pekerjaan Operator Dozer

2021 ◽  
Vol 6 (4) ◽  
Author(s):  
Abdul Halim ◽  
Mangkona Mangkona ◽  
Abdul Muis ◽  
Irfan Andika Sakti
Keyword(s):  
Land Reclamation ◽  
Average Error ◽  
Construction Work ◽  
Blade Angle ◽  
Heavy Equipment ◽  
Land Leveling ◽  
Equipment Unit ◽  
Increase Productivity ◽  
Finishing Tool ◽  
Movement Angle

In the process of construction work, operators need accuracy in the process of finishing land leveling works such as road highway building, land reclamation, large commercial, landfill installation, so as to increase productivity. Therefore, the purpose of this research is to manufacture and implement a ground leveling finishing tool using Arduino IDE software and Atmega 328 microcontroller on the Dozer D3K Caterpillar heavy equipment unit. The placement of a series of components from the Grade Monitoring Assist includes the ultrasonic sensor on the lift cylinder, gyro and accelerometer at the top center of the blade, as well as a display that displays the results of parameter readings. Connections between components in Grade Monitoring Assist are cables that integrate all installed components. The results of testing the movement of the blade up and down position to get an accuracy value of 97.30% and an error of 2.70%. While the movement of the blade down position has an accuracy value of 96.50% and an error of 2.50%. And Tests by moving the blade according to the implement movement angle at the maximum blade angle position (either side) with an average error value of 1.48o, cutting ditches (angle V) an average error value of 0.676o

scholarly journals MODEL RANCANGAN PENGELOLAAN MANAJEMEN RISIKO PADA PT. XYZ MENGGUNAKAN ISO 31000

2017 ◽  
Vol 14 (2) ◽  
pp. 206-218
Author(s):  
M. Rezky Iqbal P.
Keyword(s):  
Risk Management ◽  
High Risk ◽  
Mining Industry ◽  
Heavy Equipment ◽  
Iso 31000 ◽  
Forestry Industry ◽  
Equipment Unit ◽  
High Level ◽  
The Impact ◽  
Level Of Risk

Heavy equipment trading industry is an industry that has a high level of risk. The heavy equipment trading industry is influenced by several factors that determine the condition of the mining industry, the condition of the property industry, the forestry industry and the price of the world's coal commodities. Segmentation to heavy equipment unit is very focused on the company because the heavy equipment unit has a high risk. When viewed from the impact of the impact of the industry is highly a requirement of risk. In accepting and managing these risks, it is necessary to apply risk management with the objective to minimize the risk of loss to the company.

scholarly journals Expanding walls and shrinking beaches: loss of natural coastline in Okinawa Island, Japan

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7520 ◽  
Author(s):  
Giovanni Diego Masucci ◽  
James D. Reimer
Keyword(s):  
East Coast ◽  
Land Reclamation ◽  
Sandy Beaches ◽  
Vector Data ◽  
Construction Work ◽  
Okinawa Island ◽  
Island Habitat ◽  
Reference Map ◽  
Post War ◽  
Land Filling

Okinawa is the largest and most populated island of the Ryukyu Archipelago in southern Japan and is renowned for its natural resources and beauty. Similar as to what has been happening in the rest of the country, Okinawa Island has been affected by an increasing amount of development and construction work. The trend has been particularly acute after reversion to Japanese sovereignty in 1972, following 27 years of post-war American administration. A coastline once characterized by extended sandy beaches surrounded by coral reefs now includes tracts delimited by seawalls, revetments, and other human-made hardening structures. Additionally, part of coastal Okinawa Island was obtained by land-filling shallow ocean areas (land reclamation). Nevertheless, the current extension of the artificial coastline, as well as the level of fragmentation of the natural coastline are unclear, due to the lack of both published studies and easily accessible and updated datasets. The aims of this research were to quantify the extension of coastline alterations in Okinawa Island, including the amount of land-filling performed over the last 41 years, and to describe the coastlines that have been altered the most as well as those that are still relatively pristine. The analyses were performed using a reference map of Okinawa Island based on GIS vector data extracted from the OpenStreetMap (OSM) coastline dataset (average node distance for Okinawa Island = 24 m), in addition to satellite and aerial photography from multiple providers. We measured 431.8 km of altered coastline, equal to about 63% of the total length of coastline in Okinawa Island. Habitat fragmentation is also an issue as the remaining natural coastline was broken into 239 distinct tracts (mean length = 1.05 km). Finally, 21.03 km2 of the island’s surface were of land reclaimed over the last 41 years. The west coast has been altered the most, while the east coast is in relatively more natural conditions, particularly the northern part, which has the largest amount of uninterrupted natural coastline. Given the importance of the ecosystem services that coastal and marine ecosystems provide to local populations of subtropical islands, including significant economic income from tourism, conservation of remaining natural coastlines should be given high priority.

scholarly journals The Impact of Vibration on the Accuracy of Digital Surveying Instruments

2019 ◽  
Vol 5 (3) ◽  
pp. 515 ◽  
Author(s):  
Hossam El-Din Fawzy
Keyword(s):  
Standard Deviation ◽  
Average Error ◽  
Construction Sites ◽  
Digital Devices ◽  
Maximum Standard Deviation ◽  
Heavy Equipment ◽  
Observation Process ◽  
Effective Role ◽  
The Impact ◽  
Observation Results

A digital surveying instrument has a crucial and effective role in civil engineering. These digital surveying instruments have contributed to providing quick and simplified solutions to solve many surveying problems: particularly accuracy, saving time, and effort .Therefore, the main objective of this research is the study of the vibrations effect on digital devices efficiency during the observation process, which occur frequently especially when the devices occupy the bridges during observation or when the occupation of the device is set nearby the railways, as well as in construction sites with heavy equipment movement. Although most digital surveying instruments contain a compensator device, this research find out through the experimental test that the effect of vibration on the accuracy of observation results and the noticed errors may extend to many centimeters. In case of using the digital level devices (SOKKIA SDL-30) under exposure to vibration (up to 20 KHZ/Sec), the average error of elevation was 36.9 mm in 80 m distance and the maximum standard deviation elevation error was 18.26 mm. But in the case of using the reflector-less total station (SOKKIA SET330RK) under exposure to vibration (from 7.5 to 15 KHZ/Sec), the average error of positioning was 79.95 mm in 85 m distance and the maximum standard deviation positioning error was 43.41 mm.

OPTIMIZATION OF THE HYDRAULIC SYSTEM IN THE EXCAVATOR ARM SIMULATOR

2021 ◽  
Vol 20 (2) ◽  
pp. 145-151
Author(s):  
Abdul Azis Abdillah
Keyword(s):  
Power Unit ◽  
Hydraulic System ◽  
Control Valve ◽  
Control Unit ◽  
Repair Process ◽  
Steering System ◽  
Heavy Equipment ◽  
Long Time ◽  
Equipment Unit ◽  
Working Principle

Most of the heavy equipment units use a hydraulic system, even including systems that are essential for working with a heavy equipment unit. The hydraulic system is a system that utilizes a liquid medium in the form of fluid or oil to generate pressure, which is used to implement, the power train system, the disconnection system, the steering system. The working principle of hydraulics is to utilize the pressure exerted on the tool (which is used for this actuator / cylinder / tube) so that the pressure pushes the piston which is connected to the rod. The hydraulic system in this study is an arm excavator. This simulator is like a hydraulic system in general which consists of a power unit, in this simulator the power unit used is a type of electric motor that is connected to a hydraulic pump. The control unit is in the form of a control valve. The drive unit is an actuator / cylinder / tube. This simulator has been disabled for a long time due to a malfunction. Then the authors performed a simple analysis and improvements to the excavator arm simulator. So the research that is done is to do the 8 step troubleshooting method on the simulator. This step aims to facilitate the repair process in the simulator.

Beijing will race to catch up in South Sea dispute

2015 ◽  
Keyword(s):  
South China Sea ◽  
South China ◽  
Land Reclamation ◽  
The South China Sea ◽  
Rapid Progress ◽  
Construction Work ◽  
Content Type ◽  
China Sea ◽  
South Sea ◽  
Catch Up

Subject Chinese construction work on South China Sea reefs. Significance The latest aerial and satellite photography shows rapid progress in China's expansion of its outposts in the disputed Spratly islands of the South China Sea through land reclamation, creating artificial islands. US and Philippine officials have criticised these activities as "aggressive" and "destabilising", and much commentary has cast them as alarming and expansionary. However, they are only the latest development in a programme of Chinese consolidation dating back to the 1980s. Impacts Rival claimants will upgrade their military capabilities and facilities in the area. Hanoi, Manila and Washington will seek ways of credibly imposing costs on China for its island-building. Manila's and Hanoi's efforts to upgrade bilateral ties will be boosted. Chinese fishing activities will increase, potentially resulting in volatile on-water situations.

Reducing the effects of heavy equipment compaction through in situ archaeological site preservation

Antiquity ◽  
1994 ◽  
Vol 68 (261) ◽  
pp. 816-820 ◽  
Author(s):  
Anthony J. Ardito
Keyword(s):  
Archaeological Site ◽  
Construction Work ◽  
Heavy Equipment ◽  
Pipe Line ◽  
Salvage Archaeology ◽  
A Site ◽  
The Way

Salvage archaeology in anticipation of destruction is an accepted response to a site in the way of a pipe-line or other development. But is it right in principle? — a ‘full and fair’ record is not quite the same as survival of the actual site. And if techniques to protect a site during construction work are well designed, may they not also be cheaper?

scholarly journals Evaluasi Produktivitas Bongkar Muat Petikemas pada PT. Berlian Jasa Terminal Indonesia (BJTI Port) di Tanjung Perak-Surabaya

2021 ◽  
Vol 1 ◽  
pp. 171-179
Author(s):  
Reny Rochmawati ◽  
Ari Widayanti
Keyword(s):  
Time Series ◽  
Technological Innovation ◽  
Series Method ◽  
Heavy Equipment ◽  
Increase Productivity ◽  
Related Science ◽  
Time Series Method ◽  
Total Productivity ◽  
Loading And Unloading ◽  
The Right

Evaluation of loading and unloading productivity is an important thing that must be done because it minimizes the occurrence of obstacles in loading and unloading and helps determine the right steps to increase productivity in the following year. The purpose of this study is to determine the factors that affect the productivity of loading and unloading, calculate the percentage of productivity and determine the forecasting value of loading and unloading productivity for the next 10 years. This is expected to improve services with technological innovation and the development of related science. The method used was the time series method. The results were obtained from PT. BJTI in 2017 – 2020, the obstacles that occurred tended to decrease, so the percentage of productivity increased every year. Based on the forecasting results with the time series method, loading and unloading productivity in 2021 - 2030 showed a significant increase. In 2030 the total productivity of loading and unloading was obtained at 1,397,463 boxes. This showed that the total loading and unloading in 2030 did not affect the equipment's ability in the loading and unloading process because the equipment capacity was still sufficient to accommodate up to 2,242,560 boxes per year. Therefore, it was not necessary to add more HMC tools at Berlian Terminal. This was inversely proportional to the loading and unloading stack obstacles whose solution must be to add RTG heavy equipment so that the loading and unloading process would be faster.

scholarly journals PROGRAM EXCELLENCE SOLUTION UNTUK MENURUNKAN WAKTU PENGERJAAN REMANUFACTURING UNIT KOMATSU PC2000-8 DI PT UT SITE KALIMANTAN SELATAN

2019 ◽  
Vol 4 (2) ◽  
pp. 96
Author(s):  
Vuko A.T. Manurung ◽  
Lukyawan Pama Deprian ◽  
Yohanes Tri Joko Wibowo
Keyword(s):  
Manufacturing Process ◽  
Work Process ◽  
Heavy Equipment ◽  
Equipment Unit

<p><em>With the passage of time the heavy equipment unit will experience a decrease. In order to return the unit to its initial performance, the Reman manufacturing process is abbreviated as Reman. Reman is an activity carried out to keep heavy equipment units close to performance when first created.</em></p><p><em>PT UT site Adaro is trusted by its customers to do Reman specifically for Komatsu PC 2000-8 type excavators. In the implementation there was a delay in the implementation of the work process to 80 days. Therefore, a program was created to reduce the total leadtime to 45 days or down by 44%.</em></p>

scholarly journals Analisis Produktivitas Waktu Kerja Alat Berat Pada Pembangunan Lanjutan Reklamasi Dan Jalan Kawasan Kayu Merah-Kalumata

2021 ◽  
Vol 4 (1) ◽  
pp. 59
Author(s):  
M. Irsan Sangadji ◽  
Edward Rizki Ahadian ◽  
M Darwis
Keyword(s):  
Construction Project ◽  
Work Productivity ◽  
Dump Truck ◽  
Construction Work ◽  
Time Efficiency ◽  
Wheel Loader ◽  
Expected Time ◽  
Heavy Equipment ◽  
Work Item ◽  
Vital Resource

The development of the construction world has resulted in the increasing need for heavy equipment for each project. Heavy equipment is a vital resource in a construction project. However, the costs required to procure heavy equipment are not cheap. Therefore, the choice of heavy equipment has a big influence on the efficiency and profitability of construction work. Productivity is used as a guide in determining the duration of each job and the number of heavy equipment to be treated. This research was conducted by observing the field to obtain the time needed by each heavy equipment in the reclamation work which then carried out the calculation of productivity. The results of the research are that the trailer/trailer truck has a productivity of 60.614 minutes, the excavator has a productivity of 21 m³/hour, the roller vibrator has a productivity of 155.625 m³/hour, the wheel loader has a productivity of 91.098 m³ hour, the water tanker has a productivity of 14.229 m³/hour, the motor grader has a productivity is 942,880 m²/hour, and the dump truck has a productivity of 26,981 m³/hour, then after analyzing the productivity of heavy equipment the next stage is calculating the time efficiency that occurs in each work item, and the mobilization work takes 17 days or less than the expected time. it has been planned in the contract document that is 28 days, in the usual piling work from the excavation source it will take 247 days or less than the time planned in the contract document which is 287 days.

A fuzzy neural network approach for modeling the growth kinetics of FeB and Fe2B layers during the boronizing process

2018 ◽  
Vol 106 (6) ◽  
pp. 603 ◽  
Author(s):  
Bendaoud Mebarek ◽  
Mourad Keddam
Keyword(s):  
Neural Network ◽  
Experimental Data ◽  
Fuzzy Neural Network ◽  
Treatment Time ◽  
Calculation Model ◽  
Average Error ◽  
Network Approach ◽  
Neural Network Approach ◽  
Fuzzy Neural ◽  
Kinetics Of

In this paper, we develop a boronizing process simulation model based on fuzzy neural network (FNN) approach for estimating the thickness of the FeB and Fe2B layers. The model represents a synthesis of two artificial intelligence techniques; the fuzzy logic and the neural network. Characteristics of the fuzzy neural network approach for the modelling of boronizing process are presented in this study. In order to validate the results of our calculation model, we have used the learning base of experimental data of the powder-pack boronizing of Fe-15Cr alloy in the temperature range from 800 to 1050 °C and for a treatment time ranging from 0.5 to 12 h. The obtained results show that it is possible to estimate the influence of different process parameters. Comparing the results obtained by the artificial neural network to experimental data, the average error generated from the fuzzy neural network was 3% for the FeB layer and 3.5% for the Fe2B layer. The results obtained from the fuzzy neural network approach are in agreement with the experimental data. Finally, the utilization of fuzzy neural network approach is well adapted for the boronizing kinetics of Fe-15Cr alloy.

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