Gateway to Columbus
The Columbus Gateway Arch Bridge is an innovative twin ribbed steel arch structure with a post-tensioned composite concrete deck, transverse post-tensioned composite steel box girders...
Alternative Habitat Concepts for the First Lunar Outpost
The First Lunar Outpost (FLO) Study was a NASA-wide effort to define systems for a near-term, low cost return to the Moon. The FLO habitat must support four crew on the lunar surface for...
Standard Practice for Concrete for Civil Works Structures
Technical Engineering and Design Guides, as adapted from the U.S. Army Corps of Engineers, No. 8 This manual provides guidance for the investigation...
Improving Development Characteristics of Reinforcing Bars
Prepared by the Civil Engineering Research Foundation. Sponsored by CERF, This report describes the development and implications of a new concrete...
Bridge to the Future
The experimental Roize Bridge, near Grenoble, France, features an innovative composite space truss and unique modular construction methods for efficiency and economy. The Roize Bridge...
Pittsburgh Goes International
The size of the new $785 million Pittsburgh International Airport�900 developed acres�is twice the size of the city's Golden Triangle business district but occupies only a...
Concrete over the Connecticut
The existing Baldwin Bridge carrying I-95 across the Connecticut River between Old Lyme and Old Saybrook, Connecticut, constructed in 1948, is functioning at maximum capacity with modern...
Questioning Composites
Steel, concrete and timber are, of course, the most commonly used construction materials. Composites, or fiber reinforced plastics, have been used in specialty applications in construction...
Small Dam Rehabs
The nation's 95,000 small dams face many of the same problems as the rest of its infrastructure, but with less money available for repair. In response, the owners of small...
Building Code Requirements for Masonry Structures (ACI 530-92/ ASCE 5-92/TMS 402-92); Specifications for Masonry Structures (ACI 530.1-92/ ASCE 6-92/TMS 602-92); Commentary on Building Code Requirements for Masonry Structures (ACI 530-92/ ASCE 5-92/TMS 402-92); Commentary on Specifications for Masonry Structures (ACI 530.1-92/ ASCE 6-92/TMS 602-92)
Copublished with American Concrete Institute (ACI) and The Masonry Society (TMS)
Specifications for Masonry Structures (ACI 530.1-92/ ASCE 6-92/TMS 602-92)
Specifications for Masonry Structures (ACE 530.1-92/ASCE 6-92/TMS 602-92) is a joint effort of the American Concrete Institute, the American Society of Civil Engineers, and The Masonry...
Seismic Retrofitting: Spending to Save
Seismic retrofitting work is most often concerned with saving lives. But in cases of infrastructure, or historic structures, saving the structure, and making sure that it can operate after...
Fast-Track Stadium
The project team selected to design and construct Egypt's cable-supported Cairo Stadium Indoor Sports Complex in late 1989 faced a hard-and-fast deadline. Just 18 months later,...
Taming the Urban Underground
When designing and installing excavation support systems at a city construction site, be prepared to deal with the urban jungle. Tunnels and utility cables and pipes clog the underground,...
Masonry Carries the Load
Engineers frequently have preconceived notions about building materials. Masonry, for example, is commonly selected by architects for its color and texture, rather than by engineers for...
Design and Uses of Reinforced Shotcrete in Underground Projects in Canada
The first use of steel fibre reinforced shotcrete (SFRS) in Canada was using the wet-mix process in the support of deteriorated ground in 80 year old railway tunnels in the Fraser Canyon,...
High-Grade Concrete for the Single Permanent Shotcrete Lining Method
With the single permanent shotcrete lining method in underground construction in rock, a shotcrete layer placed subsequently to the application of the supporting shotcrete replaces the...
Design and Application of Integrated Shotcrete Linings for Underground Openings in Weak Rock Masses
Tunnels and caverns excavated in weak rock masses require special consideration in terms of shotcrete lining design. Shotcrete as a support medium for weak rock provides major benefits...
Guidelines for Shotcrete Support in Hard Rock
The writer is working on a handbook on shotcrete in hard rock. The work is sponsored by the Swedish Power Board, Development Division. The main contents are: Choice of shotcrete support...
Technical Note: STC-40 Shotcrete Adhesion In Situ Tester
It is essential that the shotcrete when reinforcing the rock mass achieves a good adhesive bond to the rock surface. The strength of that bond can be controlled by pull out testing either...
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