Although we design for flexure separately from shear, both flexure and axial force can have an impact on shear design. Is this statement correct? Explain ? Concrete reaching its maximum design strain rather than the steel reaching its yield strain is what always initiates flexural failure, regardless whether the section is under-reinforced, over- reinforced, or has a balanced reinforcement ratio. Is this a correct statement? justify your answer using a neat sketch. An under-reinforced beam section is safer than an over-reinforced one. Is this a correct statement? justify your answer using a neat sketch

7) Using air entrained concrete is best for interior slabs? T or F 8) Structural steel strength under compression is equal to strength under tension? T or F 9) It is not necessary to place control joints in concrete? Tor F

The loadsshown on the beam with a cross section at midspan as shown, are service (unfactored)loads. The concrete used is a normal weight concrete with compressive strength of 4000 psi.The yield strength of the reinforcement is 60,000psi. For the midspan section shown, computeφMn and show that it exceeds Mu

A reinforced concrete tie has a square cross section of 8 in. × 8 in. and is reinforced with 8 # 5 steel reinforcing bars Grade 60. If the concrete has a 28-day compressive strength of 4000 psi , calculate the cracking and factored tensile forces that can be supported by the tie.

Define the process of Reinforcement bar stress development.

In general, compressive strength is generally taken into account at all phases of our designs. Other engineering strengths that required to be addressed throughout the design process should be explained and stated. Comment on how it impacts the concrete structure's reinforcement.

Subject: Reinforced Concrete Structures exam

the last part is where I'm having trouble..

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How do super plasticizers help when added to concrete?