Page 304 - Bridge and Highway Structure Rehabilitation and Repair

CHAPTER 6 APPLICATIONS OF BRIDGE DESIGN AND RATING METHODS 279

Legal load rating: When inventory design load rating factor 9 1, legal load rating does not
need to be performed and no posting is required. (LRFD 6.4.3.1)
Permit load rating—the following types of permit loads apply:

special, single trip and mix with traffic, no traffi c control.
Compute undistributed maximum live load moment and shear.
Calculate distribution factors.
Compute flexure RF and shear RF.

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th
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