Transcription of A.2 AASHTO Type IV, LRFD Specifications
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A.2 AASHTO Type IV, LRFD Specifications
AASHTO Type IV - LRFD Specifications Detailed Design Examples - 1 AASHTO Type IV, LRFD Specifications INTRODUCTION DESIGN PARAMETERS Detailed example showing sample calculations for design of typical Interior AASHTO Type IV prestressed concrete Beam supporting single span bridge. The design is based on AASHTO LRFD Bridge Design Specifications 3rd Edition 2004. The bridge considered for design has a span length of 110 ft. (c/c pier distance) with no skew and a total width of 46 ft. The bridge superstructure consists of 6 AASHTO Type IV beams spaced 8 ft.
The permanent loads on the bridge including loads from railing and wearing surface can be distributed uniformly among all beams if the following conditions are met: [LRFD Art. 4.6.2.2.1] Width of deck is constant (O.K.) Number of beams, Nb, is not less than four (Nb = 6) (O.K.)
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