Title: Fabrication and design of precambered precast, prestressed concrete bridge girders
Date Published: May - June 2020
Volume: 65
Issue: 3
Page Numbers: 64 - 77
Authors: Richard Brice, Stephen J. Seguirant, Anthony Mizumori, and Bijan Khaleghi
https://doi.org/10.15554/pcij65.3-02

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Abstract

Building an intentional vertical curve into a precast concrete girder formwork system and the prestressing strand layout creates a girder with a prefabricated vertical curvature known as precamber. Precamber is an effective technique for matching the roadway profile grade for girders fabricated with a monolithic deck slab. For superstructures with a cast-in-place concrete deck, this technique helps meet challenging vertical clearance requirements and reduces the slab haunch buildup associated with significant vertical curve profiles. This paper highlights the fabrication and design of precambered girders to raise awareness and share technical knowledge about this effective but underused application of precast concrete.