A simply supported prestressed concrete beam
499mm\times 778mm
is 16 m long. It is initially prestressed by a parabolic tendon with a force of
2,568kN
with
e_(c)=210mm
and
e_(e)=0mm
. Assuming an initial compressive strength of concrete of 21 MPa , determine the DCR (in 4 decimal places) of the bottom fiber located 4 m from support considering the initial prestressing force only. Final answer in 2 decimal places.

Question

A simply supported prestressed concrete beam

499mm\times 778mm

is 16 m long. It is initially prestressed by a parabolic tendon with a force of

2,568kN

with

e_(c)=210mm

and

e_(e)=0mm

. Assuming an initial compressive strength of concrete of 21 MPa , determine the DCR (in 4 decimal places) of the bottom fiber located 4 m from support considering the initial prestressing force only. Final answer in 2 decimal places.

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