Good Day!
For bridge experts there, I just have a question about the provision in BS 5400-4, 6.3.2.4.
It is said in the code, 4.2.2, that cracking in prestressed concrete for each class should be considered for the appropriate load combination. For example, for class 1 member, load combination...
Thank you guys for your response!
Here are the drawings.
We already provided internal tendons but it seems that it is not enough to pass the stresses that's why my boss is thinking of adding external. I just want to know the problems that we may encounter when we pursue adding external than...
Hello Guys,
I just want your opinion about putting external tendons in horizontally curved box girder bridges. Is it feasible? The external tendons are straight in elevation. I think it may require many deviator. Will it be difficult to do in construction?. Can you please tell me the possible...
"Where the area of spiral and tie reinforcement is not controlled by:
Seismic requirements,
Shear or torsion as specified in Article 5.8, or
Minimum requirements as specified in Article 5.10.6,
the ratio of spiral reinforcement to total volume of concrete core, measured out-to-out of spirals...
Thank you guys for the response! I just want to add this question. Why we are modeling reinforced concrete structures with its inertia based on gross concrete area and its elasticity based on concrete only? I think reinforcements has big effect on its stiffness and will yield to higher...
Good morning. I just want to know if the formula in aashto lrfd 2012 for elasticity of concrete which is Ec=0.043*wc^1.5*f'c^0.5 is for plain concrete only. The wc for normal weight concrete suggested by aashto is 2320kg/m^3 but for reinforced concrete we used 24kN/m^3 >> 2447.48kg/m^3. Is it...
