In response to the emergence of scandals involving many high-profile companies during the 1990s, corporate governance is considered as an area requiring immediate reform. The government of the United Kingdom has conducted a series of reviews on corporate governance and incorporated the recommendations of these reports into regulatory codes. Compliance with these codes can be considered to indicate the implementation of best corporate practice. A question of interest is how UK construction companies perform in corporate governance. The answer can be revealed by comparing construction companies with the top 50 companies listed in the UK, based on the provisions of corporate governance codes. Construction companies are found to (1) disclose less corporate governance information; (2) display lower levels of structural board independence in terms of separate roles of chairman and chief executive officer (CEO) and percentage of independent directors; (3) rely less on external consultant advice in assisting the decision making of three board committees. Research thus should be conducted on whether these disparities cause adverse effects on construction company performance.Corporate governance, best practice, performance, construction companies,
Steel bridge erection requires a series of processes in the construction site including shipping, sequentially lifting, and installing bridge components that are fabricated in the factory. Each process is critical and the risks are high due to the fact that conditions in the field are far more complex than in the factory. A detailed lifting plan is important to ensure the successful completion of steel bridge erection. In this particular study, Building Information Modeling (BIM) tools were used to precisely establish the 3D model of a π shape steel arch bridge following 2D detailed design drawings. Combined with the lifting and installation sequences described in the original lifting plan which were prepared by using 2D drawings and explanations, a 4D simulation for the steel bridge erection was produced and used to review and improve the lifting plan.A spatial conflict of steel component and concrete abutment was detected and corrected in time by postponing pouring of a part of the concrete. Three out of the four issues raised by using the 4D lifting plan were verified and the effectiveness of simulation was confirmed in the construction site.
Abstract-Within the scope of construction supply chain, various uncertainties arising in the processing procedure lead to difficulties and impracticality in structural planning. As a result, consistency in individual job function and standardization of components of the production process, which is also known as "industrialized construction," become the major topic for discussion in the last few years. In order to achieve this objective, prefabrication production adopts the production method used by factory, so as to reduce numerous uncertainties arising during the processing procedure. It also attempts to standardize as many components as possible during the design stage. Under such a production environment, the production speed would be surely increased. However, contractors have to face the discrepancies between the site installation priorities and the factory production priorities. Subsequently, the issue of adopting a quality storage and transportation mechanism to act as a buffer within these processes becomes an important and prominent topic of concern. This study considers the behavioral pattern of the storage and transportation of the prefabrication factory, and then constructs an optimized pattern of prefabrication storage and transportation. Firstly, it proposes a concept of storage zoning to undergo the storage and allocation of every component. It would also consider the storage spaces available in the prefabrication factory, storage area outside the factory and jobsite, as well as the transport relationship among these storage areas. Considering the cost issue, usage cost of respective storage sites and the cost of component transportation would be the primary objectives of planning. Under such circumstances, and together with the strategic application of storage classification and allocation, the influence of different storage zoning strategies towards the whole transportation process is assessed, ensuring the best construction planning for the decision maker.
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