scholarly journals Construction Time Determination Model, Automatically Detected Resource Needs Using Programs

2020 ◽  
Vol 9 (9) ◽  
pp. 161-171
Keyword(s):  
Project Scheduling ◽  
Construction Project ◽  
Planning System ◽  
Time Schedule ◽  
Building Area ◽  
Implementation Time ◽  
Curve Method ◽  
S Curve ◽  
Integrated Program ◽  
Supply Schedule

This research is discussing about the construction project scheduling that is integrated between the implementation time with the resources needed periodically and in total. Because, determining the time of implementation of construction is very important as a basic reference, when the commencement of work and when the work must be completed. So far, the project scheduling method that is often used by engineers is the time schedule bar chart method, S curve method, Critical Path Method (CPM) method and other methods. After that, the time schedule is developed into scheduling material procurement and manpower, but the scheduling planning system is often out of sync with the implementation time schedule, material supply schedule and manpower supply schedule, therefore construction project delays often occur due to improper supply of material and manpower. That is part of the cause of the loss, therefore there needs to be an integrated scheduling program. How to produce an integrated program is, conducting research by combining methods namely, time schedule bar chart method, S curve method, CPM method, BOW analysis, SNI analysis, statistics, and supported by 60 random sampling data of project documents, consisting of, construction drawings, BOQ, and cost budget plan. Through the process according to these methods, an integrated program will be produced. Why is it necessary to use a program that results from this research, because this program is easy to use, simply enter the building area and planned implementation time at the input layer, the implementation schedule, and the required resources, will be detected automatically, both periodically and in total. This program uses Microsoft Excel applications and is very simple. This program can only be used for scheduling residential construction projects 1 level to 2 levels, with a building area between 36 m2 to 290 m2 . Cannot be used in other projects because each construction project has different characteristics.

scholarly journals Penerapan Manajemen Proyek Pada Tahap Pengendalian Waktu Pelaksanaan Proyek Soft Landscaping Jumeirah Resort Pecatu Graha Bali

2020 ◽  
Vol 3 (1) ◽  
pp. 01-05
Author(s):  
Ni Ketut Utami Nilawati ◽  
I Gde Eka Dharsika
Keyword(s):  
Project Management ◽  
Final Stage ◽  
Development Project ◽  
Limited Resources ◽  
Time Schedule ◽  
Financial Efficiency ◽  
Implementation Time ◽  
S Curve ◽  
Time Accuracy

Construction are increasingly needed in the implementation of projects, especially the existence of services that can control the main demands regarding the accuracy of quality, financial efficiency and time accuracy are very much needed. In implementing the Jumeirah Resort Pecatu Graha Bali Development Project, researchers focused their research on soft landscaping work. The role of project management in controlling the implementation time is to obtain a good way or technique to be applied so that limited resources can be managed so as to obtain effective and efficient results due to well-ordered arrangements.The "S" curve is one of the techniques for controlling project progress by using a combination of the "S" curve and the milestone. After looking at the schedule of plans and comparing with progress in the field, there are very significant delays in work on: (a) Groundcover work, when viewed from February 2019 time schedule groundcover work should have been completed, but progress data in the field in that month only reached 30.92%; (b) Shrubs work, if seen from March 2019 time schedule shrubs work should have been completed, but progress data in the field in that month only reached 35.86%; (c) Palms work, if seen from April 2019 time schedule palms work should have reached the final stage of work, but progress data in the field in that month only reached 43.69%. Factors causing the delay in work based on daily reports include: (a) Land not yet ready for planting because it is still waiting for civil works to be completed; (b) Delay in supply of types of plants: groundcover, shrubs and palms, because plants are imported from Java, especially in Malang areas.

scholarly journals Methodology of Planning the Course of the Cumulative Cost Curve in Construction Projects

2020 ◽  
Vol 12 (6) ◽  
pp. 2347
Author(s):  
Jarosław Konior ◽  
Mariusz Szóstak
Keyword(s):  
Construction Projects ◽  
Construction Project ◽  
Cost Curve ◽  
Cumulative Cost ◽  
Implementation Time ◽  
S Curve ◽  
Real Costs ◽  
Over Time ◽  
Construction Works

Appropriate planning and effective monitoring of the execution of construction projects is important with regard to their successful sustainment of implementation. Time and cost are key elements that determine the success or failure of construction projects. The obtaining of a rational S-curve course before the start of a construction project that reflects reality is important for all the participants involved in implementing an investment task. The article proposes an original methodology for planning the course of the cumulative cost curve in construction projects. It uses a method of shaping the S-curve, which is well-known in both literature and practical approaches. On the basis of the authors’ own research carried out in a homogeneous research group of hotel facilities, the areas of the curve for the correct planning of costs in construction projects were designated, which determine the boundaries of the predicted costs accumulated over time. The data for the development of the authors’ research methodology is the result of the authors’ own experience and professional work. The authors carried out Bank Investment Supervision in the years 2006–2019 on behalf of the banks that grant investment loans for non-public contracts. Knowing the total cost and duration of the planned construction project, which were determined on the basis of project documentation, cost estimates, and also their own database regarding planned and completed deadlines and budgets of similar investments, 6th degree polynomials of the real costs of the construction works were determined. This approach enabled the correct planning of costs over time and the determination of planned monthly amounts of construction works to be executed.

scholarly journals Scheduling Optimization of Prefabricated Construction Projects by Genetic Algorithm

2021 ◽  
Vol 11 (12) ◽  
pp. 5531
Author(s):  
Linlin Xie ◽  
Yajiao Chen ◽  
Ruidong Chang
Keyword(s):  
Project Scheduling ◽  
Construction Projects ◽  
Resource Constraints ◽  
Construction Project ◽  
Engineering Application ◽  
Project Schedule ◽  
Scheduling Optimization ◽  
Implementation Method ◽  
Traditional Construction ◽  
Construction Project Scheduling

Prefabricated buildings are the direction of the future development of the construction industry and have received widespread attention. The effective execution of prefabricated construction project scheduling should consider resource constraints and the supply arrangement of prefabricated components. However, the traditional construction resource-constrained project scheduling implementation method cannot simultaneously consider the characteristics of the linkage between component production and on-site assembly construction. It cannot also fully adapt to the scheduling implementation method of the prefabricated construction projects. It is difficult to work out a reasonable project schedule and resource allocation table. In order to determine the relevant schedule parameters that can reflect the actual construction situation of the prefabricated building and meet the scheduling requirements of the prefabricated project, this study proposes a prefabricated construction project scheduling model that considers project resource constraints and prefabricated component supply constraints. Additionally, it improves the design of traditional genetic algorithms (GAs). Research results of the experimental calculation and engineering application show that the proposed project scheduling optimization model and GA are effective and practical, which can help project managers in effectively formulating prefabricated construction project scheduling plans, reasonably allocating resources, reducing completion time, and improving project performance.

scholarly journals PERBANDINGAN ERECTION RANGKA BAJA JEMBATAN DENGAN MENGGUNAKAN MAST CRANE DAN TOWER CRANE PADA PROYEK JEMBATAN TRISULA BLITAR

2014 ◽  
Vol 8 (2) ◽  
pp. 146
Author(s):  
Singgih Fitra Utama, Agnes Hanna Patty, Armin Naibaho
Keyword(s):  
Steel Frame ◽  
Maximum Length ◽  
Implementation Cost ◽  
Monthly Report ◽  
Tower Crane ◽  
Implementation Time ◽  
S Curve

At Trisula bridge project Blitar, Mast Crane (MC)  was used for the erection of steel frame bridge while Tower Crane  (TC) was an alternative for the implementation of structure work. The purpose of the study is compare the two  cranes in terms of time and cost. The bridge is of 70 m span; the maximum length of MC can reach is of 3 m and TC is of 40 m. The data of daily, weekly, and monthly report and the 18-week planned S – Curve were needed to find out the implementation time. The implementation cost was calculated from the setting cost of S – Curve at IDR 739.883.800,00. Pylon method was ratio of maximum strand force 0,914 for MC and 0,924 for TC.The calculations result in 283,065 hours of MC use at IDR 739.883.800,00. And 161,219 hours of TC use at IDR 1.056.436.000,00.Keywords: comparison, erection, frame.

Modeling of the harmonization method for executing a multi-unit construction project

2019 ◽  
Vol 9 (1) ◽  
pp. 282-291 ◽  
Author(s):  
Michał Tomczak
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Construction Project ◽  
Optimization Method ◽  
Linear Processes ◽  
Project Duration ◽  
Construction Enterprises ◽  
Non Linear ◽  
Implementation Time ◽  
Selection Of

AbstractOne of the key problems in managing the realization of a construction project is the selection of appropriate working crews and coordinating their activities in a way that ensures the highest degree of implementation of defined goals (minimizing the project duration and/or reducing downtime and related costs). Most of the existing methods of work harmonization used in construction industry allow obtaining the desired results only in relation to the organization of the processes realization in repetitive linear projects. In case of realization of non-linear construction objects or construction units, it is usually necessary to choose between the reduction of the project implementation time and maintaining the continuity of crews work on the units. It was found that there is a lack in the literature of developed method enabling harmonization of crews’ work, while minimizing the downtime at work and the duration of the entire project taking into account additional constraints, e.g. the need to not exceed the deadlines for the realization of the project stages.The article presents the concept of a multi-criteria optimization method of harmonizing the execution of non-linear processes of a multi-unit construction project in deterministic conditions. It will enable the reduction of realization time and downtimes in work, taking into account the preferences of the decision maker regarding the relevance of the optimization criteria. A mathematical model for optimizing the selection of crews and order of completion of units in multi-unit construction projects was also developed. In order to present the possibility of usage of the developed concept, an example of the optimal selection of crews and their work schedule was solved and presented. The proposed method may allow for better use of the existing production potential of construction enterprises and ensure synchronization of the crews employed during the work, especially in the case of difficulties in acquiring qualified staff in construction industry.

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