To start the design of doubly reinforced beam with you should have an idea about doubly reinforced section. 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. Check this post to know more …
Before discussing about the Group Index (GI) we will first discuss about the need and significance of GI. Significance This group index is developed by US Bureau of Public Road. They wanted to develop the soil classification system called the Public Road Administration classification system which was meant for road construction. Actually the famous name …
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?
This topic is bit on higher side for the readers who are interacting for the first time with soil mechanics. We define consistency by the firmness of soil in qualitative manner. Sounds like very complicated parameter. Don’t worry this is so easy to understand. “Consistency indicates the relative with which a soil can deformed. We …
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 this post we are going to learn about the physical significance of specific gravity. Further in the post we will learn most common method to determine the specific gravity of soil. Specific gravity definition Specific gravity is the relative term. Basically it is defined as the ratio of density of and soild to the …
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 ?
As the literal meaning of this word appear, relative density is the measure of looseness in relation with something. So you might be thinking why this relative word means. This relative word is used because we are measuring with respect to loosest state of the soil. It is denoted by \(D_r(I_D)\). Hence, this is very …
Read moreRelative density of soil and its significance and limits