A Generic Inflatable Structure for a Lunar/Martian Base
The first steps in the human expansion into space, which inevitably will occur during the next century, consist of the establishment of a human-tended base on the Moon followed by human...

Transfer Vehicle Sizing for Missions to Mars
The purpose of this study is to analyze the interactions between mission and vehicle design parameters, and determine how the selection of a particular trajectory and transit time affects...

A Space Suit for Productive and Safe Extravehicular Activity (EVA)
An innovative space suit called the Command/Control Pressure Suit (CCPS) is described in terms of productivity and safety. Conceived as a cockpit for Extravehicular Activity (EVA), the...

Spacecab: A Concept for Commercial Human Spaceflight
This paper will describe the Spacecab conceptual design and operational scenario. Spacecab is not necessarily a unique design solution but it does illustrate a design philosophy that differs...

Synthetic Estimation of Development Cost of Satellite
An analysis and estimation of life cycle cost (LCC) is one of the important parts of a conceptual study or feasibility study on a satellite....

Safety Assessment of a Chemical Reactor Vessel
The potential explosion loadings on a chemical reactor vessel is described in this paper. The potential loads presented provide a basis for designing spherical storage vessels which will...

The Inelastic Response of an Offshore Platform in Hurricane Andrew
Amoco's Gulf of Mexico South Timbalier 161A platform took a direct hit from Hurricane Andrew in August of 1992, experiencing loads which far exceeded its design load. The platform had...

Load Duration Effects in an 85-Year-Old Timber Structure
Duration of load (DOL) effects are assessed in 85-year-old heavy timber trusses using five common DOL models. These models are based on the idea of static damage accumulation. Material...

U.S. / Japan Large Scale Cooperative Research Program for Steel Structures
The US/Japan Cooperative Research Program Utilizing Large Scale Test Facilities for Earthquake Resistant Design was initiated in 1980 using a combination of full-scale, small-scale, subassemblage...

First Bank Place: A Composite Cruciform Spine
The First Bank Place, designed by the internationally known architectural firm of Pei Cobb Freed and Partners, is a granite-clad, 56 stories tall building in downtown Minneapolis. Presented...

Composite Walls as Shear Elements in Tall Structures
This paper describes a system of composite walling that can be used as a lateral load resisting system in tall structures. The composite walling comprises two skins of profiled steel sheeting...

Talmadge Bridge Replacement
This paper discusses the design of the main spans and approach spans for the replacement of the Talmadge Bridge for the Georgia Department of Transportation. The design of the concrete...

Human Error Models for Structural Reliability
This paper presents models for human errors to be used along with reliability analyses. The models account for the occurrence of errors, their magnitude, and the detection of the errors....

Qualification System for Building Engineers in Korea
This paper introduces and discusses the qualification system for professional engineers in Korea which was first established thirty years ago under the Professional Engineers Act. This...

Behavior of RC Beams under Sustained Load
Experimental results of eight reinforced concrete beams under 3-month's sustained load, with the ratio of shear span to depth equal to 2.5, are reported. It is shown by tests that the...

Monitoring of Structures During Repair of Underground Utilities
A collapse of underground utilities at a power plant required the constant monitoring of the surrounding structures during excavation and replacement of the damaged pipes. A computer-based...

Overweight Trucks and Safety of Bridges
Most states face increasing pressure to issue more and heavier overweight truck permits. Current permit checking methods of many states adopt the AASHTO rating concept with or without...

Multimedia Technology and Structural Steel Design
A project is underway at The Pennsylvania State University to produce Steel Design Educational Module (SteelDEM) software. This intelligent tutor and teaching aid utilizes the state-of-the-art...

Seismic Performance of Railway Bridges
Historically, the seismic performance of railway bridges in the U.S.A. has been very satisfactory during earthquakes of this century. There are many possible factors contributing to this...

Seismic Study of Historic Bridges in Eastern United States
The main objective of this paper is to study the Barrackville bridge and its response in resisting static and seismic loads. Since the design was based on controlled deflections, the analyses...

 

 

 

 

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