scholarly journals Fabrication of Material Handling or Material Lifting Crane

2021 ◽  
pp. 481-484
Author(s):  
Aryan Ramteke ◽  
Mahesh Mahajan ◽  
Amaan Sheikh ◽  
Ayush Bhaisare ◽  
Karan Bharatkar ◽  
...  
Keyword(s):  
Service Life ◽  
Material Handling ◽  
Easy Access ◽  
Construction Sites ◽  
Safe Operation ◽  
Reliable Service ◽  
Lifting Capacity ◽  
Story Building

Our Monkey hoist / Crane is basically use full to construction of multi-story building for lifting of bricks cement bags and concrete etc. With the lifting capacity from 200kg to 700kg. For height of 10m to 150m. In the development of mini crane that are fabricated in tandem with the latest technological advancements. Owing to their design, these cranes allow easy access to sites, where another crane may fail. These cranes are basically used in construction sites for lifting of bricks, steel, concrete, sand, cement and tiles. Acknowledged for their reliable service life, safe operation and compact dimensions, these can be availed from us at aggressive prices.

scholarly journals An Upgraded Sine Cosine Algorithm for Tower Crane Selection and Layout Problem

2020 ◽  
Author(s):  
Ali Kaveh ◽  
Yasin Vazirinia
Keyword(s):  
Material Handling ◽  
Harmony Search ◽  
Building Construction ◽  
Construction Sites ◽  
Layout Problem ◽  
Tower Crane ◽  
Np Hard Problem ◽  
Sine Cosine Algorithm ◽  
Crane Selection ◽  
Construction Site Layout

Tower crane is the core construction facility in the high-rise building construction sites. Proper selection and location of construction tower cranes not only can affect the expenses but also it can have impact on the material handling process of building construction. Tower crane selection and layout problem (TCSLP) is a type of construction site layout problem, which is considered as an NP-hard problem. In consequence, researchers have extensively used metaheuristics for their solution. The Sine Cosine Algorithm (SCA) is a newly developed metaheuristic which performs well for TCSLP, however, efficient use of this algorithm requires additional considerations. For this purpose, the present paper studies an upgraded sine cosine algorithm (USCA) that employs a harmony search based operator to improve the exploration and deal with variable constraints simultaneously and uses an archive to save the best solutions. Subsequently, the upgraded sine cosine algorithm is employed to optimize the locations to find the best tower crane layout. Several benchmark functions are studied to evaluate the performance of the USCA. A comparative study indicates that the USCA performs quite well in comparison to other recently developed metaheuristic algorithms.

scholarly journals Methodological and computer-based support for choosing underground utility networks renovation method

2018 ◽  
Vol 230 ◽  
pp. 02010
Author(s):  
Dmitriy Goncharenko ◽  
Ihor Shumakov ◽  
Olha Starkova ◽  
Alevtyna Aleinikova ◽  
Revaz Mikautadze
Keyword(s):  
Service Life ◽  
Computer Models ◽  
Software Tools ◽  
Safe Operation ◽  
Multicriterion Optimization ◽  
Repair Method ◽  
The Status ◽  
Computer Based ◽  
Effective Organization

The article is devoted to the methodological and software tools for choosing organizational and technological solutions to maintain sewage collectors in an operable state to increase their service life. Such a tool must take into account a set of factors that affect the operation of sewer collectors and form a system, the implementation of which would improve the existing principles of monitoring the status of sewer collectors, identify effective organization and technological solutions of their renovation by taking into account factors that affect their safe operation, the facilities risk of accidents categories, conditions and parameters of works performance. For determining the optimal options for the renovation of the sewer collector using the developed mathematical and computer models, the results of problems solving were generalized: one-criterion optimization subject to the choice of one repair method; one-criterion optimization subject to the choice of different repair methods for the areas; multicriterion optimization.

Environmental index for Finnish construction sites

2014 ◽  
Vol 14 (2) ◽  
pp. 245-262 ◽  
Author(s):  
Olli Teriö ◽  
Jaakko Sorri ◽  
Kalle Kähkönen ◽  
Jukka Hämäläinen
Keyword(s):  
Environmental Management ◽  
Action Research ◽  
Material Handling ◽  
Energy Use ◽  
Construction Sites ◽  
Environmental Index ◽  
Index Method ◽  
Content Type ◽  
Simple Index ◽  
Starting Point

Purpose – The primary aim of this study was to better understand the grounds to develop a monitoring and performance measurement method to support the environmental management of construction operations. The practical purpose was to improve environmental activities in construction sites. This study helps to fill the gap between environmental needs and practices on construction sites. Design/methodology/approach – Action research was the principal research method. The research procedure was executed in collaboration with construction companies. The EICS meter was originally developed to create rules for environmental competition between construction sites. Since the time of this competition, the meter has been further improved in other studies. Findings – Based on the literature and feedback gained in the testing round of the EICS, five relevant categories were formulated to evaluate environmental operations: environmental information management, waste management, material handling and shielding, energy use and emissions. A simple index method was applied for these five categories. Furthermore, observation targets and acceptance criteria were defined for these categories. The meter supports environmental management in practise. The method can be used to analyse the starting point level when developing environmental processes. Originality/value – This study offers insights based on action research for both academics and practitioners. The meter is outlined for Nordic conditions, but the structure of the method is also suitable elsewhere. The national demands can be locally fine-tuned.

scholarly journals Analysis of Material Handling Safety in Construction Sites and Countermeasures for Effective Enhancement

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
C. N. Anil Kumar ◽  
M. Sakthivel ◽  
R. K. Elangovan ◽  
M. Arularasu
Keyword(s):  
Education Program ◽  
Material Handling ◽  
Safety Management ◽  
Worker Safety ◽  
Safety Education ◽  
Construction Sites ◽  
Test Analysis ◽  
Significance Level ◽  
Material Handling Equipment ◽  
Questionnaire Surveys

One of many hazardous workplaces includes the construction sites as they involve several dangerous tasks. Many studies have revealed that material handling equipment is a major cause of accidents at these sites. Though safety measures are being followed and monitored continuously, accident rates are still high as either workers are unaware of hazards or the safety regulations are not being strictly followed. This paper analyses the safety management systems at construction sites through means of questionnaire surveys with employees, specifically referring to safety of material handling equipment. Based on results of the questionnaire surveys, two construction sites were selected for a safety education program targeting worker safety related to material handling equipment. Knowledge levels of the workers were gathered before and after the program and results obtained were subjected to at-test analysis to mark significance level of the conducted safety education program.

MODELING MANUFACTURERS' AND CUSTOMERS' COSTS FOR COST SHARING LIFETIME WARRANTY

2012 ◽  
Vol 29 (04) ◽  
pp. 1250024
Author(s):  
ANISUR RAHMAN ◽  
GOPINATH CHATTOPADHYAY
Keyword(s):  
Service Life ◽  
Stochastic Models ◽  
Cost Sharing ◽  
Poor Quality ◽  
Time Dependent ◽  
Cost Models ◽  
Reliable Service ◽  
Dependent Failures ◽  
Warranty Policies

Lifetime warranties are becoming more popular as these types of warranties provide assurance for a longer reliable service life, protection of customers against poor quality and the potential high cost of failure occurring during the long uncertain life of products. Chattopadhyay and Rahman (2008) proposed taxonomy for Lifetime warranty policies and developed cost models for Free rectification lifetime warranty (FRLTW) policies. In line with Chattopadhyay and Rahman, in this paper, stochastic models for two most potential and currently practiced Cost sharing lifetime warranty (CSLTW) policies, Specific parts excluded lifetime warranty and Limit on individual cost lifetime warranty have been developed to estimate the customers' and manufacturers' costs. The developed models capture the uncertainties of lifetime warranty coverage period and implication in offering such warranties on both manufacturer and customers. The developed models are analyzed using illustrative examples considering products with time-dependent failures.

Obstacle clearance while performing manual material handling tasks in construction sites

2014 ◽  
Vol 62 ◽  
pp. 205-213 ◽  
Author(s):  
Rui Azevedo ◽  
Cristina Martins ◽  
José Cardoso Teixeira ◽  
Mónica Barroso
Keyword(s):  
Material Handling ◽  
Construction Sites ◽  
Manual Material Handling ◽  
Obstacle Clearance

scholarly journals RISK- ANALYSIS OF DIAGNOSTIC DIAGNOSIS DURING OPERATION OF SELF-PROPELLED LOADING CRANES OF THE ARROW TYPE

2020 ◽  
Vol 1 (154) ◽  
pp. 267-271
Author(s):  
О. Skrypnyk ◽  
V. Abrakitov ◽  
A. Stepanenko
Keyword(s):  
Service Life ◽  
Risk Analysis ◽  
Fatigue Cracks ◽  
Operating Conditions ◽  
Industrial Safety ◽  
Economic Damage ◽  
Safe Operation ◽  
Current Time ◽  
The Impact

The problem of managing the safe operation of hoisting machines with an expired service life is associated with solving extremely complex interrelated tasks through a set of organizational and technical measures aimed at establishing the actual risk and economic feasibility of further operation. The most important condition in this case is the conduct of an expert examination of industrial safety and technical diagnostics, the results of which make it possible to establish the real state of hoisting machines at the current time. The safety of hoisting machines, including after the expiration of the standard service life (assigned resource), is associated with design features, workmanship, installation quality, their operation modes and a number of other factors. However, for heavily loaded hoisting machines, the main technical obstacle to safe operation is metal fatigue The results of a statistical analysis of defects detected by expert diagnosis of self-propelled boom-type cranes that have fulfilled the standard operating period are presented. The largest number of defects is associated with the destruction and wear of structural elements, the occurrence of fatigue cracks and the violation of the operating conditions of the equipment. The greatest number of defects is found in the hydraulic system of cranes, elements of the cable-block system, less often in metal construction. To conduct a risk analysis of self-propelled jib cranes in conditions of insufficient information, a methodology for expert assessments is proposed. It allows you to evaluate the impact of potential defects of self-propelled jib cranes on the amount of economic damage to the crane itself and the transported load and on the magnitude of the traumatic impact on humans. Defects and damage to the metal structures of the cranes discovered during the examinations are the result of the following combination of reasons: low quality of the metal (mild steel); unsatisfactory design; unsatisfactory quality of manufacture and installation of individual elements; environmental aggressiveness; operation of cranes in an unintended mode, poor maintenance and repair Keywords: safety, propelled jib crane, defect, expert assessment, risk analysis, diagnosis.

Mathematical Theory of Processes of Concrete Corrosion

2019 ◽  
pp. 58-63
Keyword(s):  
Experimental Data ◽  
Service Life ◽  
Initial Data ◽  
Mathematical Theory ◽  
Dual Porosity ◽  
Safe Operation ◽  
National Importance ◽  
Concrete Corrosion ◽  
Binding Rate ◽  
Chemical Type

Forecasting the processes of degradation of structures that determine their safe operation (especially in aggressive environments) is a task of national importance, given the significant volumes of structures whose service life is exhausted. The main directions of improving the mathematical theory of concrete corrosion are formulated in the article. For corrosion of chemical type they include: the account of phase transformations, dual porosity system and the use of experimental data on distribution of aggressive components along the depth of a layer of concrete of the operated structures as initial data for forecasting of processes of degradation. The function of the binding rate of the aggressive component under this approach is theoretically justified. The development of general provisions of the principles of building of mathematical models, methods of predicting the processes of degradation of structures makes it possible to combine research in this area and present them as a mathematical theory of corrosion processes of concrete.

The Application of High Content SBS Modified Asphalt Waterproof Layer in the Project of Jing-Jin-Tang Highway's Bridge Deck Maintenance

2014 ◽  
Vol 919-921 ◽  
pp. 1178-1183
Author(s):  
Hai Feng Zhang ◽  
Lian Yu Wei ◽  
Nan An
Keyword(s):  
Service Life ◽  
Production Technology ◽  
Bridge Deck ◽  
Raw Material ◽  
Safe Operation ◽  
Modified Asphalt ◽  
Long Term Follow Up ◽  
Sbs Modified Asphalt

Based on the project of Jing-Jin-Tang Highways bridge deck maintenance, this paper will study the raw material, production technology and construction control of high content SBS modified asphalt waterproof layer. According to the long-term follow-up inspection and the test data to constructed project, we could conclude that high content SBS modified asphalt waterproof layer has a good waterproof performance. It prolongs the service life of the bridge deck greatly and ensures the safe operation of the bridge.

scholarly journals Preface-Special issue on “Analysis on structural performance”

2020 ◽  
Vol 3 (4) ◽  
Author(s):  
Huaping Wang
Keyword(s):  
Service Life ◽  
Large Scale ◽  
Performance Degradation ◽  
Scale Construction ◽  
Structural Performance ◽  
Special Issue ◽  
Safe Operation ◽  
Important Index ◽  
Practical Engineering ◽  
The Stability

Structural performance is the most important index to declare the stability, safety and durability of structures in practical engineering. The performance degradation of structures becomes more and more common with the increase of service life. To ensure the safe operation of structures, the hot research has gradually changed from large-scale construction to the detection, repair, reinforcement, renovation and maintenance.

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