Installation of Fasteners
All parts of a connection should be held tightly together during installation of fasteners. Drifting done during assembling to align […]
Structural Steel
Inspectability
Inspectability of all bridge members and connections is an essential design-stage consideration. This is especially apparent when the structure includes
Influence Lines
An influence line is constructed by plotting the position of the unit load as the abscissa and as the ordinate
Impact Loads
The live loads specified in building codes and standards include an allowance for ordinary impact loads. Where structural members will
Impact Test Requirements for Structural Steel
The resistance to fracture of steel for bridge fabrication is generally measured by the Charpy V-notch test. The grade of
Hybrid Girders
When plate girders are to be used for a bridge, costs generally can be cut by using flanges with higher yield
Highway Design Loadings
The AASHTO Standard Specifications for Highway Bridges require bridges to be designed to carry dead and live loads and impact, or
High-Strength Bolts, Nuts, and Washers
For general purposes, A325 and A490 high-strength bolts may be specified. Each type of bolt can be identified by the ASTM
Hollow Structural Sections
Design criteria for round and rectangular hollow structural sections (HSS) used as structural members in buildings is given by AISC