Implementation of Visualization and Modeling Technologies for Transportation Construction

State departments of transportation (DOTs) increasingly use visualization and modeling technologies for delivering transportation projects across the United States. Advanced and innovative technologies have the ability to improve various construction processes and tasks while making the construction process more efficient and productive. Visualization and modeling technologies, which include building information modeling for infrastructure, light detection and ranging, virtual reality, and augmented reality, are becoming more commonplace in transportation construction. Yet, the use of these technologies varies among state DOTs. The intent of this study is to investigate the use of visualization and modeling technologies for transportation construction. This study employed a triangulation research methodology including an extensive literature review, survey questionnaire of DOTs, and seven case studies. Results of the study show that 92% of state DOTs use visualization and modeling technologies for construction. Then, 81% of DOTs use visualization and modeling technologies for constructability reviews, 38% use them for documentation of as-builts and simulating bridge and structure construction, and 35% use them for quality management, inspections, and monitoring progress of work. The main barriers to using visualization and modeling technologies include legal concerns with using digital models as contract documents, incompatibilities in software and hardware between the DOTs and contracted parties, and the appropriate knowledge, skills, and abilities required to use visualization and modeling technologies for construction. The findings from this study provides valuable information for state DOTs to approach their implementation and use of visualization and modeling technologies for transportation construction delivery.

PROJECT BUNDLING IN TRANSPORTATION CONSTRUCTION

Project bundling is a process through which a single contract is awarded for the continued development of multiple bridges or roadways, i.e., their preservation, rehabilitation, or replacement. One question that past studies on project bundling have not answered is that of how to quantify its benefits on engineering projects. This paper shows the extent to which project bundling enables optimal use of resources and promotes quicker project completion. It also explains how project bundling effectively leverages these efficiencies by simplifying project delivery and exploiting alternative and traditional contracting approaches. Indeed, because the process of bundling individual projects into larger “umbrella” contracts simplifies design, contracting, and construction, it enables organizations to leverage economies of scale for significantly increased efficiency. This process also encourages more partnering during project delivery, execution, and project completion. In addition to discussing the efficiency of bundling, this paper also identifies implementation strategies and scenarios for project bundling that can be applied by counties, municipalities, districts, or states. These implementation practices can also be layered to allow any combination of project types, beyond the combinations most common to current bundling contracts. Ultimately, this research shows that overall contract cost can be significantly reduced through carefully designed strategic project bundling.

Ship Building Construction Systems

The need for sea transportation, which includes ships, is increasing – driven by the growing competition in the economic, social, political, and defense and security sectors. This, in turn, is driving advances in ship construction techniques in Indonesia. In building a ship, several factors must be considered. In addition to planning the shape and characteristics of the hull, as well as planning the strength and arrangement of the ship itself. Ship construction in general consists of two main parts, namely the hull and the building on the ship or deck house. Keywords: Transportation, Construction System, Ship

Analysis of The Impact of Highway Construction Related to Social and Environment

According to the development practice of transportation construction in my country and related literature records, the existing domestic and foreign research on the promotion of transportation construction on the social and economic development and the negative impact on the ecological environment is analyzed, and it is provided a valid reference to exploring the ideas of green transportation construction and establishing a green road evaluation index system.

Responses and Thoughts of Transportation Construction Projects in the Reform of Environmental Review and Approval System in the New Situation

The Ministry of Ecology and Environment has promoted the reform of the environmental impact assessment approval system for construction projects. It has formulated and implemented a positive list of environmental assessment approvals, simplified and optimized the environmental assessment approval process, improved approval efficiency, and effectively guaranteed the smooth development of various construction projects. The long-term implementation mechanism in the future points out the direction; through the study of the reform of the environmental review and approval system under the new situation, the corresponding suggestions for the construction unit and technical unit of the transportation construction project are put forward.