Considering modular ratio as 13, grade of concrete as M20 and grade of steel as 415, what is the ratio of balanced depth of neutral axis as per working stress method to the balanced depth of neutral axis as per limit state method?
A
127
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
113
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
712
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
311
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is C712 As per working stress method balanced depth ofneutral axis is given byxc=(mct+mc)×dFor M20 concrete, c=7N/mm2 and forFe415,t=230N/mm2∴xc=(13×7230+13×7)×d⇒xc=0.28dAs per limit state method, forFe415xu,lim=0.48d∴xcxu,lim=0.28d0.48d⇒xcx−u,lim=712