Substitutes for leadership and unionized construction carpenters
Article Abstract:
The decreasing cost-effectiveness in the construction industry has been widely attributed to inadequate supervision of workers by construction foremen. However, it is also believed that substitutes for leadership exist to counteract whatever leadership qualities a foreman may lack. In a study of a unionized carpentry environment, two most powerful substitutes for leadership are revealed. These substitutes are ability, experience, training and knowledge (AETK) and closely knit, cohesive work crews (COHES). Results, thus, imply that AETK and COHES support the substitutes for leadership concept.
Publication Name: Journal of Construction Engineering and Management
Subject: Science and technology
ISSN: 0733-9364
Year: 1992
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Method proposed for construction of multispan cable-stayed bridges
Article Abstract:
Construction of a 13 km bridge across Northumberland Strait in Canada offereda challenging design problem. For such a bridge, 250 m long spans were used so that ice floes can be cleared immediately in spring. A cast-in-situ solution using a steel truss was chosen as the construction technique. Truss length was more than twice the span length between towers at 525 m. Hydraulic jacks were used to launch the truss below the bridge deck with added support from flotation tanks. If pier geometry and superstructure are compatible with the method, it can also be used for concrete box-girder bridges.
Publication Name: Journal of Construction Engineering and Management
Subject: Science and technology
ISSN: 0733-9364
Year: 1992
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Construction of grout-impregnated fabric-reinforced pipes
Article Abstract:
Pipe construction using grout injection between an inflatable inner tube and an outer tube made of reinforcing mat in a fabric envelope is evaluated. Inspection difficulty and quality control are major concerns of the method but wall thickness and ring stiffness results showed possibilities. After limited testing, results showed that ring stiffness increased 24% when impregnation pressure was raised from 4 psi to 20 psi. Grout-impregnated fabric-reinforced pipes may be used for trenched and submarine pipes and tunnels, culverts, rock tunnel liners and underground tanks.
Publication Name: Journal of Construction Engineering and Management
Subject: Science and technology
ISSN: 0733-9364
Year: 1992
User Contributions:
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