Design is the final step in the whole engineering process. A good design satisfies the requirements of strength and serviceability while also remaining economic to construct.
In any structural system crack arises because of stress in the structural system. Failure of a reinforced concrete beam in flexural shear will not result in a sudden failure. But yes gradually it will decrease the flexural strength and result in failure of structure. In reinforced concrete beams, cracks occurs because of flexural and shear …
As the name implies doubly reinforced beams means we are providing the reinforcement in both the zones. In the case of a beam the zone is basically compression and tension zone. At the analysis stage if the value of moment of resistance is less than the required bending moment and also if there is a …
Transverse reinforcement in beams is provided mainly to resist the shear forces or forces which act in a direction perpendicular to the longitudinal direction of reinforced concrete beams. We follow IS – 456:2000 design procedure to calculate the reinforcement required for resisting shear force. Most commonly use stirrups as transverse reinforcement. As you all know …
Read moreWhy do we provide transverse reinforcement in beams?
As we have already discussed in the previous port reinforced concrete beam is a composite section made of concrete and reinforcement. In this post you will get the answer of why we should account for minimum and maximum reinforcement. Concrete is good in compression and is bad in tension. So it is very much required …
In the process of analysis and design of a R.C.C sections, there are some few assumption which we use to make the process simple. Some basic assumptions are : Plane sections before bending remain plane even after bending. The tensile strength of concrete is neglected. The stress strain curve for concrete and steel both are …
Read moreWhat is the fundamental assumption of flexural theory ?
Let us start with the basic definition of modular ratio. It is the ratio of elasticity modulus of two different materials. For example let the value of elasticity modulus of two different material is E1 and E2. Then the value of modular ratio “m” is : $$m = \frac{E1}{E2}$$ In the case of reinforced concrete …
Read moreWhat is modular ratio and how it is used in RCC beam design ?
To start with you should first know what is a beam — Beam is basically a structural member, constructed horizontally which resists the load applied on the it. The primary mode of failure is bending. We mostly go for a reinforced beam construction. A combination of steel and concrete is used for construction. To know …
Read moreWhat is the difference between over reinforced beam and under reinforced beams ?
Yes floor slab, we normally don’t give so much attention to design a floor slab. Floor slab is also called as base slab. But in some cases the floor slab can be more complex, where the ground water level is higher and thus water proofing is required and also in cases where the strength of …
Read moreWhat is a floor slab and why detailing is required for a slab?
In present scenario it is very easy to design slab. As in most of the cases we use some third party commercial software to design the structure. Even then I believe for a civil engineer it is very much important to be aware about the different steps involved in designing the two way slab as …
Read moreSteps involved in design of a two way slab | IS 456: 2000?
A structure should be serviceable and its important that it should serve the intended function throughout its life. When we follow the limit state of serviceability as per Indian Standards (IS 456: 2000), it is ensured that the comfort of people and aesthetic appearance of the structure is satisfactory. When a concrete structure is designed …