scholarly journals ANALISA KOMPARATIF ANTARA ACUAN PERANCAH SEMI SISTEM DENGAN ACUAN PERANCAH ALUMINIUM. STUDI KASUS : PROYEK RANCANG BANGUN RUMAH SUSUN, PONDOK CINA, DEPOK

2021 ◽  
Vol 3 (1) ◽  
pp. 25-31
Author(s):  
Illona Fatikah Andriyono ◽  
Agung Budi Broto

In selecting the formwork work method, the things that need to be considered include cost, quality, and time. Comparison of several methods of formwork work is carried out to obtain the correct method. Comparisons were made to the Semi System formwork method and the Aluminum formwork method. To compare the two methods requires volume calculation, the multiplier coefficient referred to by the PUPR Regulation No. 28 / PRT / M / 2016, non-conformence data, and work duration. This data is processed into the need for the cost of formwork for the two methods based on the PUPR Ministerial Regulation Number 28 / PRT / 2016, the percentage of concrete defects due to formwork, and the scheduling duration presented in the bar chart. The two methods are compared based on the need for the cost of the work, the number of percent of quality, and the work duration. The comparison shows that the aluminum formwork method is superior in terms of cost (RAB). It is produced more efficiently by 3.4%. In terms of quality, this method results in less damage (concrete defects) to minimize repair costs later, and when the work reaches 43% more effective.

2019 ◽  
Vol 33 (4) ◽  
pp. 747-767 ◽  
Author(s):  
Jan Brusselaers ◽  
Ellen Bracquene ◽  
Jef Peeters ◽  
Yoko Dams

Purpose The purpose of this paper is to investigate to what extent a consumer’s repair strategy impacts the annual costs of ownership of a washing machine and two types of vacuum cleaner. Design/methodology/approach The annual cost of ownership is determined by calculating the annual life cycle cost (LCC) for the respective devices. The annual LCCs of the different scenarios allow a comparison of the different repair strategy options. A Monte Carlo simulation is run to introduce parameter variability. The device’s failure rate is estimated by a combination of data sets on the devices’ performance. Findings Results demonstrate that the repair of the devices considered is a more favourable option over replacement. A consumer who aims for the lowest annual LCC should allow for a high number of repairs per device, without putting a maximum on the cost per repair. However, the consumer should become more cautious when a device approaches the end of its expected lifetime. Finally, the purchase of warranty can be interesting when the warranty covers a sufficiently long proportion of the device’s (expected) lifetime and when its cost does not exceed a threshold proportion of the initial purchase price. Research limitations/implications The costs for repair might be overestimated. Future research can focus on the reduction of repair costs following self-repair. Practical implications The results provide strong arguments in favour of repair instead of replacement of broken devices. Originality/value This is the first research to quantify the influence of consumer behaviour in the context of repair of devices on the ownership costs of these devices.


2016 ◽  
Vol 22 (2) ◽  
pp. 164-179
Author(s):  
Sergey Golovin

Purpose – The purpose of this paper is to represent replacement policies (rules) in the form of a matrix. Visualization of replacement rules is useful for maintenance records. Matrix representation is more effective than the verbal description usually provided, as it allows better understanding of the specifics of the different replacement rules without careful research of their mathematical models. Design/methodology/approach – This approach employs mathematical models to investigate the simple conditions (requirements) for replacement of system component with illustrative examples. When comparing the different replacement rules a cost structure is applied to takes into account the nature and technology of disassembly assembly actions for the repair unit. Findings – Representation of replacement rules in the matrix form is useful when describing planned replacement models, opportunity replacement models, group replacement models and others, as well as computer modeling of the renewal process. Forming simple conditions for the replacement of system components ensures the total average repair cost is minimized. These conditions can be applied in the early stages of creating a maintenance program for the machine. Practical implications – Replacement matrices can be specified in a technical manual for maintenance of machines to achieve reliable operation and to reduce repair costs. Replacement matrices can be put into practical use for maintenance records and may be included in the maintenance procedures library of CMMSs. Developed in the paper, the replacement matrix, the conditions for replacement of system components and the cost structure will help engineers to make decisions at the time of repair for assembly units. Originality/value – Proposed in the paper is a new approach to the visualization of the replacement rules and cost structure which simplifies the analysis of options for repair actions. The proposed technique contributes to the record of maintenance actions and the decision making process for replacement.


1954 ◽  
Vol 17 (6) ◽  
pp. 190-193
Author(s):  
Carl W. Hall

To hold the cost of products sold at a competitive level in face of rising prices, it is necessary that production costs be held to a minimum. The first major field of reduction of production costs is in labor costs. In order to get the most out of dairy equipment labor must be properly used. When the time requirements of a job are reduced by improving the method, the worker must be gainfully employed at some other assignment. There are beneficial changes which provide leisure, add to the comfort of the worker, and reduce the hazards of his work. Changes in plant equipment arrangement may be made even though they are not justified on a purely economical analysis. The paper presents principles, with applications, which can be followed in each plant to improve the work method and decrease time requirements.


Author(s):  
D.F. GONCHARENKO ◽  
O.V. STARKOVA ◽  
R.I. GUDILIN ◽  
Yev.H. DEGTYAR

Raising of problem. A significant part of wastewater in Ukrainian cities is discharged using sewer collectors with a diameter of 300 to 1 400 mm, the depth of which is within 3…8 m. A significant part of them is destroyed due to corrosion processes that take place in the surface space. Today, the problem of repair and restoration of sewerage networks is becoming especially relevant in connection with the increased requirements for environmental protection. Failure in sewer lines usually results in wastewater infiltration into groundwater and soil. During the repair and restoration of sewage collectors, open and closed methods of work are used. Taking into account that a significant part of sewage collectors passes through areas where there are no transport arteries, through agricultural land and have an insignificant depth of occurrence, and also the fact that their trough part, as a rule, cannot be destroyed due to corrosion, it is advisable to carry out repair and restoration work on them in an open way. Analysis of accidents on sewage collectors, which took place in different cities of Ukraine, showed that, as a rule, due to corrosion, intensive destruction of the roof of the collectors occurs. At the same time, the trough part of the collectors remains intact due to the fact that it is constantly filled with waste water. When repairing such sections of sewerage networks in recent years, operating organizations have been using polyethylene and fiberglass pipes. These smaller pipes are installed in the retained trough part, thus reducing the network diameter. The cost of new pipes is quite high, which in turn increases operating costs. The use of pneumatic formwork allows you to create a new collector, and as the main bearing element, you can use the saved tray part. Purpose. Evaluation of the possibility of using known materials for the manufacture of pneumatic formwork, which will make it possible to carry out repair work to create a new vault using the trough part of the sewer collector as a supporting structure, which will significantly reduce repair costs compared to using pipes made of polymer materials. Conclusion. The investigated samples of materials – fabric Mare 1400 and Hypolon (ORCA 828) – can be used for the manufacture of pneumatic formwork, since laboratory tests made it possible to conclude that there was no adhesion between concrete and material samples.


2021 ◽  
Vol 1 (2) ◽  
pp. 113-122
Author(s):  
Sukemi Kamto Sudibyo ◽  
Fitri Puji Astuti

The Muji Jaya Workshop in determining the cost of body repair, it still uses a manual estimate model with paper media which will result in losses if the calculation of the cost of body repair that is informed to the customer is not enough so that the body repair costs received are not sufficient for the needs of raw material costs and labor costs in body work. The repair and preparation of financial statements will be disrupted and delayed for a long time if the note paper used is lost or damaged. This results in the owner not being able to make decisions quickly, precisely and accurately. From these various problems, Workshop Muji Jaya implements the use of the activity based costing method in the accounting information system for determining body repair costs in order to make it easier to determine the cost of body repairs to be more accurate and in presenting financial statements to be easier and more efficient because this method is guided by the assignment of costs to products. or services based on all required activities.   Keywords: estimation, cost, activity based costing


UKaRsT ◽  
2017 ◽  
Vol 1 (1) ◽  
pp. 6
Author(s):  
Hammam Rofiqi Agustapraja ◽  
Dwi Kartikasari

The bridge is a structure that serves to connect two parts of the road that are looked after by obstacles such as deep valley, river channel, irrigation, and disposal. The quality of bridge building is also influenced by the accuracy in selecting appropriate material. By minimizing errors that occur, to achieve efficient work in time, effort, and costs is required evaluation of the work Box Culvert on the project of Kucing bridge development Sukodadi-Sumberwudi road Lamngan Regency. In this research use survey method activity and reschedule in the project of Kucing bridge development Sukodadi-Sumberwudi. Work evaluation includes volume calculation, enumeration calculation, and job implementation method. The sequence of work start from the preparatory work, the ground work, the structure work Box Culvert. From the research was known the cost work of structure Box Culvert of Rp. 345.536.000,00 (Three Hundred forty five million five hundred thirty six thousand rupiah)  the implementation period is 8 weeks.Keywords: Volume Calculation, kucing bridge, Box culvert, and Implementation Method 


1970 ◽  
Vol 185 (1) ◽  
pp. 565-569 ◽  
Author(s):  
N. A. J. Hastings ◽  
D. W. Thomas

Repair costs for mechanical equipment tend to increase with age. A mathematical expression relating mean repair cost to age is developed and is shown to be valid in practical cases. The expression is used as a basis for determining the economic life of equipment for the situation where a number of overhauls may occur before replacement. It is shown how the optimal number of overhauls can be determined as a function of the cost and effectiveness of overhaul.


2020 ◽  
pp. 90-93
Author(s):  
М.М. Юрков ◽  
В.В. Жолудева ◽  
Е.В. Уткин

В статье проанализированы наиболее существенные факторы, влияющие на техническую готовность тракторов к работе, с помощью математико-статистического моделирования. Исследование проведено на одном из сельскохозяйственных предприятий Ярославской области. Техническая готовность техники зависит от множества субъективных и объективных факторов. В результате исследований авторами было выявлено восемь факторов, влияющих на техническую готовность тракторов (затраты на ремонт и техническое обслуживание (ТО) одного физического трактора за год, руб.; затраты на ТО на один эт. га в год, руб.; стоимость материально-технической базы (МТБ) по ремонту и ТО, приходящаяся на один эт. трактор, тыс. руб.; обеспеченность работающими механизаторами на 100 физических тракторов, чел.; наличие механизаторов, имеющих 1–3 классы квалификации, % к общему количеству; доля услуг предприятий сельхозтехники в затратах на ремонт и ТО, %; затраты на запасные части за один год на один эт. трактор, руб.; доля стоимости узлов и агрегатов при ремонте тракторов, %). Для описания процесса были использованы методы многофакторного корреляционного и регрессионного анализа. Выявлено, что наиболее существенное влияние на результативный признак (коэффициент технической готовности тракторов) оказывает величина затрат на ТО в расчёте на один эт. га в год и наличие механизаторов, имеющих 1–3 классы квалификации. Применение предложенной методики, по мнению авторов, обеспечит не только определение технического состояния агрегатов и механизмов, но и сократит время простоя техники, снизит затраты на ТО и технический ремонт, а также на расход запасных деталей и материалов и повысит производительность труда. The article analyzes the most significant factors affecting the technical readiness of tractors for work using mathematical and statistical modeling. The research was carried out at one of the agricultural enterprises of the Yaroslavl region. Technical readiness of machinery depends on many subjective and objective factors. As a result of the research the authors identified eight factors affecting the technical readiness of tractors (repair and maintenance costs (maintenance) of one physical tractor per year, Rub.; maintenance costs per reference unit ha per year, Rub.; the cost of the material and technical base (MTB) for repair and maintenance which is accounted for by reference tractor, RUB, in thousands; provision of working machine operators for 100 physical tractors, people; the presence of machine operators with 1–3 qualification classes, % of the total number; share of agricultural equipment services in repair and maintenance costs, %; service parts costs per year per reference tractor, Rub..; share of components and assemblies cost during tractor repair, %). Multifactor correlation and regression analysis techniques were used to describe the process. It was revealed that the most significant impact on the effective feature (tractor technical readiness factor) is the amount of maintenance costs calculated per reference ha per year and the presence of machine operators with 1–3 qualification classes. The application of the proposed technique according to the authors, will ensure not only the determination of the technical condition of units and mechanisms, but also reduce the out-of-service time of equipment, reduce maintenance and technical repair costs, as well as the consumption of spare parts and materials and increase labor productivity.


Author(s):  
Ayman M. Cheta ◽  
Richard Brodzinski

Weld repairs and alterations of pressure vessels and piping built to ASME codes may require pressure testing to prove the integrity of the weld and/or design. In recent years, several designs were developed to employ bolted devices when performing local pressure testing of flange-to-nozzle, flange-to-pipe and nozzle-to-shell attachment welds. Due to the cost and equipment down time associated with performing a full conventional pressure test and the desire to reduce repair costs, several petrochemical companies adopted the use of such devices. The purpose of this paper is to compare the stress values and stress distribution associated with both techniques. The advantages and disadvantages of both approaches are discussed and the conclusions are supported by a practical example.


1995 ◽  
Vol 10 (4) ◽  
pp. 350-351

AbstractIn a case brought before the A1 Ain Court against a local insurance company, the plaintiff claimed the cost of repairing the engine of her vehicle which was insured with the defendant insurance company. The plaintiff claimed that the engine of her vehicle had exploded accidentally and suddenly and without any apparent reason. She therefore claimed the cost of repairing the engine from the insurance company. The insurance company refused to pay on the ground that the explosion of the engine was a mechanical defect which was excluded from the terms of the insurance policy. Therefore, the insured was not entitled to be reimbursed for the repair of the engine of her own vehicle, because it was not involved in any accident with a third party. The Court of First Instance delivered a judgment in favour of the insured. This judgment was upheld by the Appeal Court and thereafter by the Abu Dhabi Supreme Court of Cassation who held that the explosion was accidental, sudden and for reasons unknown to the assured. This damage was covered by the insurance policy and the insurance company was therefore liable to compensate the insured for the repair costs even though the damage was not caused by an accident with a third party.


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