Specifications for lightning protection

Lightning protection is a valuable investment that protects property and saves lives. Its importance has increased due to the vulnerability of data and communication equipment to surges caused by lightning.

A feature exploring guidelines on specifying lightning protection appeared in the August 2015 issue of...

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Adjacent precast box beam bridges

For years, adjacent prestressed concrete box-beam bridges have been employed for short and medium spans—two-thirds of all state Department of Transportations (DOTs) use them. Cracks in the longitudinal grouted joints between adjacent beams have often been observed.
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