## How do we strengthen an existing foundation of an old building?

Generally, strengthening of the foundations might be needed due to the alterations in serviceability of the buildings. One method of

## What are the reasons to use cranked bars in a slab?

Cranked bars / Bent up bars are provided on top of the reinforcement to resist negative bending moment/Hogging at the supports of

## Why does RCC slabs getting cracks after 4 hours of concrete pour?

There are a number of reasons why concete cracks and the types of cracks that develop are actually given different

## What is the difference between balloon framing and post & beam construction?

Balloon framing leaves out the beams that these days separate the stories of a house.Balloon framing goes back to a

## How can we calculate the weight of a concrete slab?

Firstly find the volume of concrete in cu.m.Then if it is P.C.C multiply it by 2400 as density of concrete is 2400kg/ cu.m

## What is the difference between a slab and a lintel?

Lintel is a horizontal member, which is placed across the openings, left in the wall for the provision of doors,

## Is pure cement stronger than concrete? Why or why not?

No pure cement is not stronger than concrete as cement is only binding materials which bind aggregate and sand with

## 7 FORMS OF DEFECTS IN PLASTER ( Concrete Plastering)

7 FORMS OF DEFECTS IN PLASTER TYPES OF DEFECTS IN PLASTER This post describes 7 different categories of defects most

## What is the difference between a control joint and a contraction joint in concrete?

A control joint is a deliberate break in a long/large concrete installation, especially when the concrete expands, eg. concrete will

## Why is reinforcement lapped 1/3 of the span away from the support in beams and slabs?

When we do a bending moment diagram of a continuous slab or beam, we will observe that the max moment

## Why are chairs provided in a slab?

Chairs are contraptions provided in slabs and the like to sere as sturdy enough seats for the longitudinal reinforcement

## Which is better, PCC or RCC? Why?

PCC is paste of cement, aggregate and water. It is mostly used in flooring and usages where it is liable

## What is the difference between the mix design of PCC and RCC?

Plain Cement Concrete (PCC) is not used as structural concrete hence it has lower strength (max 3000 psi) requirement than