Design of a one-way slab - Reinforced Concrete with FRP Bars: Mechanics and Design - page 198

Compressive strain at peak is

1.71 f
E

⋅ ′

c

ε := =0.0021

c0

c

Compressive stress at peak is

f
psi

′

c

σ " =0.9 ⋅

c

Stress-strain curve equation is

ε
ε

c
c0

2" ⋅σ ⋅

c

()

σε :=

cc

2

ε
ε

c
c0

1 +

6.4 STEP 2—COMPUTE THE FACTORED LOADS

The self-weight is computed considering a concrete density of 150 psf.
Other dead loads such as floor cover (0.5 psf) and ceiling (2 psf) are con-
sidered. A live load of 100 psf was requested by the owner. The following
unfactored uniform loads are considered:

SW := t slab ∙ρ c = 96.7∙psf Slab self-weight

OD := 2.5 psf Other dead loads

DL := SW + OD = 99.2∙psf Total dead load

LL := 100 psf Live load

The governing load combination for computing the total factored load,
TFL, is load combination (9-2) defined in ACI 318-11:

TFL := 1.2∙DL + 1.6∙LL = 279∙psf

The total service load, SL, is

SL := DL + LL = 199.2∙psf

The dead load per unit width (including the slab's self-weight) is

lbf
ft

w =DL b=99.2 ⋅ ⋅

D

The live load per unit width is

lbf
ft

w =LL b=100 ⋅ ⋅

L