wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A prestressed concrete beam has a cross-section with the following properties :
Area A=46400mm2 ,I=75.8 ×107 mm4, Ybottom=244 mm,Ytop=157 mm.
It is subjected to a prestressing force at an eccentricity 'e' so as to have a zero stress at the top fibre. The value of 'e' given by

A
66.66 mm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
66.95 mm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
104.72 mm
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
133.33 mm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C 104.72 mm

Hence for zero stress at top ,

PA=PeYtopI

146400=e×15675.8×107

e = 104.72 mm

flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Thrust and Pressure
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon