Transcription of SECTION 9 - PRESTRESSED CONCRETE - Caltrans
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SECTION 9 - PRESTRESSED CONCRETE - Caltrans
BRIDGE DESIGN SPECIFICATIONS APRIL 2000 SECTION 9 - PRESTRESSED CONCRETE Part A General Requirements and Materials APPLICATION General The specifications of this SECTION are intended for design of PRESTRESSED CONCRETE bridge members. Mem bers designed as reinforced CONCRETE , except for a per centage of tensile steel stressed to improve service behav ior, shall conform to the applicable specifications of SECTION 8. Exceptionally long span or unusual structures require detailed consideration of effects which under this SECTION may have been assigned arbitrary values. Notations As = area of non- PRESTRESSED tension reinforcement (Articles and ) A's = area of compression reinforcement (Article ) A*s = area of prestressing steel (Article ) Asf = steel area required to develop the compressive strength of the overhanging portions of the flange (Article ) Asr = steel area required to develop the compressive strength of the web of a flanged SECTION (Articles ) Av = area of web reinforcement (Article ) b = width of flange of flanged member or width of rectangular member bv = width of cross SECTION at the contact surface being investigated for horizontal shear (Article ) b' = width of a web of a flanged member CRc = loss of prestress due to creep of CONCRETE (Article ) CRs = loss of prestress due to rel
BRIDGE DESIGN SPECIFICATIONS • APRIL 2000 SECTION 9 - PRESTRESSED CONCRETE Part A General Requirements and Materials 9.1 APPLICATION . 9.1.1 General . The specifications of this section are intended for
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