Search results

(1 - 4 of 4)
CONSTRUCTION MATERIAL TRACKING INVENTORY CONTROL SYSTEM USING SMART BLUETOOTH/NFC TRACKING DEVICES
Title
CONSTRUCTION MATERIAL TRACKING INVENTORY CONTROL SYSTEM USING SMART BLUETOOTH/NFC TRACKING DEVICES
Creator
Moiitat, Amir Ghasem
Date
2016, 2016-05
Description
Inventory control on a construction site is typically performed by an individual who regularly visits the storage area, directs personnel to...
Show moreInventory control on a construction site is typically performed by an individual who regularly visits the storage area, directs personnel to forward components to the construction area, and reports to the site office about the quantities remaining in the storage area. Automating this process is expected to reduce mistakes and save significant time. In this study, the potential use of Bluetooth technology is investigated in construction inventory control as a tracking device. Commercial Bluetooth tracking devices were examined to understand the different devices’ capabilities and to extract usable attributes and characteristics about each brand. After an extensive examination of several brands, one of the commercial Bluetooth tracking devices with the most suitable capabilities was chosen for this study. The Android smartphone was selected to act as a scanner in the storage area and a basic workflow was designed around the Android smartphone and the Bluetooth tracking device. In addition, to improve the performance of the Bluetooth tracking device, it was paired with Near Field Communication (NFC) tags that expedited the material tracking process. The “hybrid” tracking device is introduced as the key element of the inventory control system and an Android smartphone is used as an in-house scanner that captures the tracking device’s information and sends it to a server for analysis. An automated inventory control system that is designed to use the proposed tracking device can contribute greatly to construction site productivity.
M.S. in Civil Engineering, May 2016
Show less
DECISION SUPPORT SYSTEM FOR THE SELECTION OF BUILDING COMPONENTS USING MAINTAINABILITY PRINCIPLES
Title
DECISION SUPPORT SYSTEM FOR THE SELECTION OF BUILDING COMPONENTS USING MAINTAINABILITY PRINCIPLES
Creator
Liu, Xuanchang
Date
2019
Description
Maintainability of a building component refers to how easy it is to maintain the component with minimum cost and downtime. Unfortunately,...
Show moreMaintainability of a building component refers to how easy it is to maintain the component with minimum cost and downtime. Unfortunately, maintainability issues do not receive enough attention in the design stage and cause serious problems in the post-construction stage such as increasing the life cycle cost of the facility, wasting maintenance materials, and unsatisfactory user experience because of downtime. These problems can be prevented if a tool is available that can help designers make the selection for building components based on maintainability in the design stage. This study aims to develop such a tool that allows designers to evaluate a building’s components relative to maintainability and that helps designers to make a maintainability-based selection in the design stage. To achieve this purpose, this study first identifies a checklist of maintenance actions for components of building systems, in this study condensers. Then, a condenser selector system is developed by coding in Java language. Users can run this selector with any browser with or without a connection to the Internet. This condenser selector system relies on a database that is populated by data about maintenance actions obtained from condensers’ guidebooks or from manufacturers. When using the selector, designers can customize the tool according to their preferences or conditions. At the end, the selector ranks the condensers in the database and allows the designer to make an informed maintainability-based selection. The prototype component selection system is a prototype, but can be expanded by augmenting the system to include other components too. Ideally, a maintainability-based selection tool should include all models of all components in building systems. Such a system could be a significant improvement in the current design practice. Considering the maintainability of components in the design stage could enhance maintenance and facility management.
Show less
PROJECT SCHEDULING USING OPTIMIZED FINANCING
Title
PROJECT SCHEDULING USING OPTIMIZED FINANCING
Creator
Alavipour, Seyyed Mohammadreza
Date
2017, 2017-07
Description
Contractors need financing throughout a project, mainly due to retainage, which is the money that the owner withholds to make sure that the...
Show moreContractors need financing throughout a project, mainly due to retainage, which is the money that the owner withholds to make sure that the project is performed properly by the contractor. Even if an owner does not withhold retainage, financing is still necessary because the periodic payments made by the owner are usually delayed. All pertinent studies conducted so far have considered only one source of financing without any consideration of different sources and types of financing, times of cash provisions, interest rates, and repayment options. Actually, if one assumes a predetermined credit limit and one source of financing, as past researchers have done, the optimal financing cost and the schedule that satisfies all constraints may be different than when several sources of financing and undetermined credit limit are considered. The main objective of this research is to focus on the optimization of financing cost by developing a financing optimization model based on different financing alternatives. Far lower financing cost and higher profit are obtained by using the proposed model compared to all models developed in past research. The research is conducted in four stages of development. In Stage 1, a financing optimization model is developed for a schedule that uses normal (not accelerated) activities, and early activity start and finish times. This model can be used before the contract is signed to offer the lower bid or can be used after the contract is signed to obtain higher profit. In Stage 2, the time-cost tradeoff algorithm is added to the model developed in Stage 1, considering accelerated activities between the crash and normal durations. In Stage 3, the model developed in Stage 2 is augmented by considering variable activity start times. Finally, in Stage 4, the model developed in Stage 3 is further improved by expanding time-cost tradeoff to allow for time extensions beyond the contract duration. All models developed in these four stages provide not only minimum financing cost, but also the ideal work schedule that achieves minimum total cost and maximum profit. Moreover, these models provide specific timings for borrowing and repaying funds.
Ph.D. in Civil Engineering, July 2017
Show less
The Peter Principle and Career Development in Construction Management
Title
The Peter Principle and Career Development in Construction Management
Creator
Bolisetty, Lakshmi Satya Bavya
Date
2023
Description
The construction industry, like any other industry, may benefit from updating its working environment by adopting advances in technology,...
Show moreThe construction industry, like any other industry, may benefit from updating its working environment by adopting advances in technology, updating the qualifications of its workforce, and ensuring that the right professionals are employed at each level. Having effective career development programs, filling project management roles with competent professionals, and promoting competent professionals ensures a successful project delivery. Promotion typically ensures candidates are rewarded for their performance and motivates them towards achieving higher success. Promoting the wrong person or having an incompetent person at any management level has detrimental effects to the project’s success. However, according to the “Peter Principle” (Peter, 1969), incumbents in a hierarchy tend to rise to “a level of respective incompetence”. That is, they are promoted based on their success in their current role, rather than their ability to perform in the new one. Through a review of the literature and a critical analysis of the existing research, this study examines the strengths and weaknesses of the Peter Principle and its relevance to professionals employed by construction companies and construction management firms in contemporary management practice. It also explores the reasons why an incumbent is stuck in a position for a long time. The findings of this research suggest that while the Peter Principle may have some limitations, it remains an important concept for managers to consider when making decisions about employee promotion and development. It concludes that while the Peter Principle may have a significant effect in promotion decisions, there are also external circumstances unique to each individual that may affect their performance.
Show less