Scheduled Departure
A busy, growing international airport constructs a new international terminal with upper and lower level access roads and expands its parking garage without interrupting services. The...
Crane Safety on Construction Sites
Selecting Tower Cranes
Looming over the skyline like steel dinosaurs, tower cranes can look deceptively similar. But these beasts of burden are not a homogenous species, and selecting and positioning the right...
Bechtel Automated Lift Planning System
This paper describes the Automated Lift Planning System (ALPS) software developed by Bechtel Corporation. The software was developed to assist the construction engineer with planning and...
3D CAD Modeling and Graphical Simulation of Mobile Cranes
This paper describes the research performed to lay a foundation for developing a graphical simulation system which can be used in the planning of heavy lifts using mobile cranes. Mobile...
SELECTCRANE: An Expert System for Optimum Crane Selection
Every major project undertaken today requires the services of a crane(s) to ensure that all materials and equipment hoisting and placement are performed in the most efficient manner. The...
CAD Applications for Material Handling in the Construction Environment
Research at Va. Tech in the area of dynamic behavior modeling and crane damping have been undertaken. The dynamic behavior modeling capability has been designed to us 3-D CAD models and...
Tripod Crane Concept for Lunar Surface Construction
A construction scheme using three integrated cranes is proposed. Mikulas proposed a lunar crane concept which introduces a set of three cables in order to stabilize the payload. This paper...
Cables and Cranes for a Flexible Lunar Transportation System
This paper will discuss the results of preliminary research on a cable-based transportation system for the moon. The paper will address the principles of cableway design and will present...
Analysis of Space Crane Articulated-Truss Joints
Three articulated-truss joint concepts for the space crane are studied to evaluate their static structural performance over a range of geometric design parameters. Emphasis is placed on...
Uses for Lunar Crawler Transporters
This article discusses state-of-the-art crawler transporters and expresses the need for additional research and development for lunar crawlers. The thrust of the paper illustrates how...
Cranes, Concrete, Construction...and Computers
Computers are already firmly entrenched in the design process. Now, they're touching all corners of construction. Applications range from traditional project management tasks...
Deep Water Container Wharf & Crane Foundation
A deep water anchored steel bulkhead and a parallel-independent low-profile, pile supported crane rail foundation with special stowage areas are discussed from soils investigation, through...
Crane Rebuilding vs. New Purchase
The dimensional and operational features of a container crane which are deemed desirable, if not necessary, in a modern port terminal are discussed and quantified. Some reasons why a crane...
Crane Raise with Zero Downtime
Massachusetts Fort Authority (MPA) was faced with a dilemma. Its Conley Terminal tenants needed higher cranes but could not relinquish the cranes for more than a few days at a time. No...
Modern Crane Control Enhancements
Terminal operators are continually looking for innovative ways to enhance the productivity and safety of their container cranes. This paper discusses examples of control enhancements that...
Upgrading Today's Terminals for Tomorrow's Needs
This paper describes how a 1940's vintage, timber pile supported wharf is being modernized to serve post-Panamax ships: how the Massachusetts Port Authority (MASSPORT) is rebuilding their...
Uncertainty Analysis of Preclosure Accident Doses for the Yucca Mountain Repository
This study presents a generic methodology that can be used to evaluate the uncertainty in the calculated accidental offsite doses at the Yucca Mountain repository during the preclosure...
Sand Bypassing at Indian River Inlet, Delaware
To solve a beach erosion problem north of Indian River Inlet, Delaware, the US Army Corps of Engineers Philadelphia District and the State of Delaware have constructed a fixed plant sand...
The CRANIUM: A Case Study of Sensory Improvement for Construction Equipment Operators
Machines excel at physical processes such as generating large forces and performing repetitive motions, but humans are still better at information intensive processes such as planning,...
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