Design Issues - Strengthening Design of Reinforced Concrete with FRP - page 77

Ultimate
Strain
ε u , in./in.
(mm/mm)

Modulus of
Elasticity
E , ksi (GPa)

Ultimate
Strength
f u , ksi (MPa)

Ply
Thickness
t f , in. (mm) Material

Carbon FRP (sheets) 33,000 (227) 0.014 (0.014) 462 (3187) 0.0065 (0.165)

Problem 4.6:
For the beam in Problems 4.1 and 4.5, determine the elastic stress level in FRP. Note
that 50% of the original live load existed on the beam during strengthening. The beam
was strengthened using two plies of CFRP with the properties listed in problem 4.5.
Compare the FRP stress level to the limit set by Equation (4.3) of this chapter.

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