Title: Shear capacity of dry-cast extruded
precast, prestressed concrete
hollow-core slabs
Date Published: July - August 2019
Volume: 64
Issue: 4
Page Numbers: 71 - 83
Authors: Karl A. Truderung, Amr El-Ragaby, Mohamed Mady, and Ehab El-Salakawy
https://doi.org/10.15554/pcij64.4-01
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Abstract
Precast, prestressed concrete hollow-core slabs offer an
economical solution where large spans dictate the design. There are currently multiple code methodologies
for shear design; however, only the European standard
EN 1168 addresses web-shear design specifically for
prestressed hollow-core slabs. This paper presents the
experimental results of eight 305 mm (12 in.) deep
precast, prestressed concrete hollow-core slabs tested
until failure to evaluate their shear capacity against the
shear predictions in the Canadian standard CSA A23.3-
14, ACI 318-14, and EN 1168. The results showed
that EN 1168 was the most accurate predictor of the
web-shear capacity of the precast, prestressed concrete
hollow-core slabs for the range of tested variables,
including the amount of prestressing and different
support bearing lengths, with an average experimental-to-predicted capacity of 0.96. The test results and
comparisons emphasized the need to introduce a
specific equation for evaluating the elastic web-shear
capacity of precast, prestressed concrete hollow-core
members into the upcoming edition of CSA A23.3.