given: pretensioned, simple beam with 40ft span

superimposed loads:

Dead=.30klf

live=1klf

constant tendon eccentricity

time-dependentlosses=.16Pi

f'c=5000psi

f'ci=4000psi

fpu=250psi

keep h approx equal to 2.5 b

use ACI limit stresses

Required:

(a)Section deminsions

(b)prestress steel

(c)Pi"

superimposed loads:

Dead=.30klf

live=1klf

constant tendon eccentricity

time-dependentlosses=.16Pi

f'c=5000psi

f'ci=4000psi

fpu=250psi

keep h approx equal to 2.5 b

use ACI limit stresses

Required:

(a)Section deminsions

(b)prestress steel

(c)Pi"

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