Design of a two-way slab - Reinforced Concrete with FRP Bars: Mechanics and Design - page 319

The strength-reduction factor when failure is controlled by bond is

0.55 if CheckFailure“Bond strength” 0.55 =

φ :=

b_bond

φ if CheckFailure = “Bar ultimate strength”

b

The design flexural strength is, therefore,

ft kip
ft

⋅

φ⋅ m=4.46 ⋅

b_bond nb

“OK” if φ ⋅ mm ≥

b_bond nb uNegMax

Check_FlexureNeg:=

“Not good”otherwise

Check_FlexureNeg = “OK”

The embedment length is adequate. If the embedment length had not
been adequate, a bent bar could have been used as indicated in the
following.

l emb = 12in

Bar = "#4"

Bent_Bar = “Not needed”

r b

l ltail

l lbhf

b beam = 14in