wimp
Active member
ACI318 - 05 says max stresses in concrete are as follows...
for stresses in concrete immediately after prestress transfer
extreme fiber stress in compression = .6f'ci
extreme fiber stress in tension = 3 sqrt(f'ci)
extreme fiber stress in tension = 6 sqrt(f'ci)
for stresses in concrete after losses
.45 f'c for compression due to prestress plus sustained load
.60 f'c for compression due to prestress plus total load
two questions...
1) what does ACI 318-02 say for these values
2) what about the extreme fiber stress in tension for concrete after losses? I don;t see where this is covered in the code.
thanks
for stresses in concrete immediately after prestress transfer
extreme fiber stress in compression = .6f'ci
extreme fiber stress in tension = 3 sqrt(f'ci)
extreme fiber stress in tension = 6 sqrt(f'ci)
for stresses in concrete after losses
.45 f'c for compression due to prestress plus sustained load
.60 f'c for compression due to prestress plus total load
two questions...
1) what does ACI 318-02 say for these values
2) what about the extreme fiber stress in tension for concrete after losses? I don;t see where this is covered in the code.
thanks