Applying Modified Minimum Moment Method to Multiple Resource Leveling

Hiyassat, Mohammed

doi:10.1061/(asce)0733-9364(2001)127:3(192)

Cited by 49 publications

(19 citation statements)

References 10 publications

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“…As explained earlier, the priority in acceleration is for the activity that is least aligned with its successor. Identifying the least aligned activity is done using a technique similar to minimum moment algorithm used for resource leveling 9 . It operates by calculating the areas trapped between lines representing successive activities, then calculating the moment these areas cause around a centerline.…”

Section: Proposed Methodsmentioning

confidence: 99%

Optimized Acceleration of Repetitive Construction Projects

Bakry¹,

Zayed²,

Moselhi³

2012

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC)

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Purpose The purpose of this paper is to present an improved algorithm for optimized acceleration of repetitive construction projects. Method Through a set of iterative steps this algorithm identifies the least costly method that would put a project back on track, while maintaining crew work continuity. The algorithm divides each activity into segments and identifies the segments that would shorten project duration if accelerated. For these identified segments, the ones with the lowest cost slope are selected and cued for acceleration. Through the proposed segmentation of activities this algorithm provides better focusing of allocated additional resources, thus resulting in more cost-efficient acceleration plans. The algorithm is implemented in a spreadsheet application, which helps automate calculations, yet allows users to fine-tune the algorithm to fit the project conditions at hand. The algorithm allows users to select among different acceleration strategies such as working overtime, working double shifts, working weekends, employing more productive crews, work stoppage for converging activities and intentional work breaks. Results & Discussion The developed algorithm is applied to a case study drawn from literature in order to illustrate its basic features and demonstrate its accuracy. The results obtained, when compared to those reported for the case considered, demonstrate the ability to accelerate this project in while utilising fewer resources.

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Section: Proposed Methodsmentioning

confidence: 99%

Optimized Acceleration of Repetitive Construction Projects

Bakry¹,

Zayed²,

Moselhi³

2012

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC)

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“…Crew work continuity is enforced to maximize the benefits of the learning curve effect and minimize work disruptions and cost (El-Rayes and Moselhi, 1998). The proposed method is analogous to the minimum moment algorithm proposed by Hiyassat (2001), which performs resource levelling through minimizing the total energy expended to complete a project. A numerical example, drawn from the literature, is analysed to highlight the basic features of the proposed method and demonstrate its capabilities.…”

Section: Proposed Methodsmentioning

confidence: 99%

“…If liquidated damages and incentives are contractually applicable, the method incorporates them when computing project total cost associated with the accelerated schedule. As mentioned earlier, the method proposed to reduce project duration is analogous to the minimum moment algorithm employed to level resources (Hiyassat, 2001), and is best illustrated through an example. Consider the linear schedule shown in Figure 6, showing the progress of three activities.…”

Section: Expediting Methodsmentioning

confidence: 99%

Accelerating linear projects

Hassanein

2005

Construction Management and Economics

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Scheduling linear repetitive construction projects, such as highways and pipelines, poses unique challenges due to maintaining crew work continuity. An efficient method is presented, developed to accelerate the delivery of this class of projects so as to meet a specified deadline with least associated cost. The method is simple and ensures crew work continuity. An iterative approach is employed, where, in each iteration, the project schedule is analysed and an activity is identified as the controlling activity. A controlling activity is an activity that if accelerated, would reduce project duration at least additional cost. Upon its identification, the method selects an expediting strategy that would reduce project duration, and the project is rescheduled. Several expediting strategies are considered, including working overtime, double shifts and weekends. The method is implemented in a prototype software that operates in a Windows� environment, providing a user-friendly graphical interface. It has an open architecture, enabling the user to actively participate in tailoring the generated schedule to suit the requirements of the project at hand. The proposed method accounts for incentives and liquidated damages to aid users in identifying the most cost-efficient schedule. A relational database model is implemented in Microsoft Access� to store typical crews and their associated productivity, as well as their availability dates. A project, drawn from the literature, is analysed to demonstrate the basic features of the proposed method and highlight its capabilities.Repetitive construction, acceleration, crew productivity, time-cost trade-off,

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“…Later Hiyassat (2000) develops Harris' method by considering the value of activity's free float time and its resource rate for how to select the activity that will be shifted to the new position. Hiyassat (2001) extends the modification of the previous method (Hiyassat 2000) and applies to network with multi resources under the same conditions. However, in some cases, the results are better than those traditional methods.…”

Section: Literature Reviewmentioning

confidence: 96%

Integrated multi-resource planning and scheduling in engineering project

Issa¹,

Tu²

2017

10.5267/j.jpm

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Planning and scheduling processes in project management are carried out sequentially in practice, i.e. planning project activities first without visibility of resource limitation, and then scheduling the project according to these pre-planned activities. This is a need to integrate these two processes. In this paper, we use Branch and Bound approach for generating all the feasible and non-feasible project schedules with/without activity splitting, and with a new criterion called "the Minimum Moments of Resources Required around X-Y axes (MMORR)", we select the best feasible project schedule to integrate plan processing and schedule processing for engineering projects. The results illustrate that this integrated approach can effectively select the best feasible project schedule among alternatives, improves the resource utilization, and shortens the project lead time.

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Applying Modified Minimum Moment Method to Multiple Resource Leveling

Cited by 49 publications

References 10 publications

Optimized Acceleration of Repetitive Construction Projects

Optimized Acceleration of Repetitive Construction Projects

Accelerating linear projects

Integrated multi-resource planning and scheduling in engineering project

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