Its dimensions are not decided from the diagonal tensile stress
Large size of long beams carrying large shear force need not be adopted
Removal of cracks in the members due to shrinkage
All the above
Answer is Right!
Answer is Wrong!
The correct answer is D. All of the above.
Pre-stressed concrete is a type of concrete that is reinforced with steel cables that are under tension. This tension in the cables helps to counteract the tensile stresses that are caused by the loads on the concrete. This can lead to a number of advantages, including:
- Smaller members: The pre-stressing of the concrete can allow for the use of smaller members, which can lead to cost savings.
- Increased strength: The pre-stressing of the concrete can increase its strength, which can allow for the use of larger loads.
- Reduced cracking: The pre-stressing of the concrete can reduce cracking, which can improve the durability of the member.
In addition, pre-stressed concrete can be used to create members that are curved or have complex shapes. This can be useful for a variety of applications, such as bridges and buildings.
Here is a brief explanation of each option:
- Option A: The dimensions of a pre-stressed concrete member are not decided from the diagonal tensile stress. This is because the pre-stressing of the concrete counteracts the tensile stresses that are caused by the loads on the concrete. This means that the member can be made smaller than a non-pre-stressed concrete member that is designed to carry the same loads.
- Option B: Large size of long beams carrying large shear force need not be adopted for pre-stressed concrete members. This is because the pre-stressing of the concrete can help to reduce the shear stresses that are caused by the loads on the member. This means that a smaller member can be used, which can lead to cost savings.
- Option C: Removal of cracks in the members due to shrinkage is possible with pre-stressed concrete. This is because the pre-stressing of the concrete can help to reduce the tensile stresses that are caused by shrinkage. This can help to prevent cracks from forming, or can reduce the size of cracks that do form.
Overall, pre-stressed concrete is a versatile material that can be used to create a variety of members with a range of advantages.