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RISSynthesizing Ontology and Graph Neural Network to Unveil the Implicit Rules for US Bridge Preservation Decisions
Abstract: Bridges are essential portions of a nation’s infrastructure systems. Although general rules and guidelines are available for bridge preservation activity prediction, due to the intricate interdependencies among bridge ...
Task Variation and the Social Network of Construction Trades
Publisher: American Society of Civil Engineers
Abstract: Construction projects can be complex and managers are faced with the challenge of managing multiple trades working on a large number of interdependent tasks. When one trade or task experiences variation, defined as the ...
Causes and Penalties of Variation: Case Study of a Precast Concrete Slab Production Facility
Publisher: American Society of Civil Engineers
Abstract: Concrete precast plants require strict control over and adherence to the timing and sequence of operations. Variation for this research is divided into the variation in task starting time (the difference between the planned ...
Using Pajek and Centrality Analysis to Identify a Social Network of Construction Trades
Publisher: American Society of Civil Engineers
Abstract: Construction project managers are often faced with the challenge of managing a complex construction process consisting of multiple trades working on a large number of interdependent tasks. A social network is a pattern of ...
Effects of Production Control Strategy and Duration Variance on Productivity and Work in Process: Simulation-Based Investigation
Publisher: American Society of Civil Engineers
Abstract: Improving productivity and reducing work-in-process are two activities that can improve project performance, but are often difficult to accomplish. The construction process is complex and consists of a large number of ...
Causes of Variation in Construction Project Task Starting Times and Duration
Publisher: American Society of Civil Engineers
Abstract: In this research, variation is defined as the time difference between what was planned and what actually happened in terms of task starting times and duration. Variation in construction tasks is important as it can impact ...
Using Last Planner and a Risk Assessment Matrix to Reduce Variation in Mechanical Related Construction Tasks
Publisher: American Society of Civil Engineers
Abstract: Variation, defined for this research as the time difference between what was planned and what actually happened, is important as it can affect the productivity performance of construction tasks. The construction process ...
Application of Time Buffers to Construction Project Task Durations
Publisher: American Society of Civil Engineers
Abstract: For this research, a time buffer is defined as the extra time added during planning to individual task durations to compensate for uncertainty and protect against workflow variation to assure a predictable hand-off to ...
Case Studies of the Allocation and Reduction of Time Buffer through Use of the Last Planner System
Publisher: American Society of Civil Engineers
Abstract: Buffers are used in construction to absorb variation caused by the inherent complexity and uncertainty present in construction projects. The case studies presented here focus on time buffer added to construction task ...
Causes of Time Buffer and Duration Variation in Construction Project Tasks: Comparison of Perception to Reality
Publisher: American Society of Civil Engineers
Abstract: Due to the inherent nature of the construction industry, all construction projects have some amount and type of uncertainty. This uncertainty can lead to variation in project task durations from what was originally planned. ...