Favourable Bond & Unfavourable Bond Condition

 Ref. Code IRC: 112-2020


Favourable bond conditions:

For normal weight concrete, the bond conditions are considered to be favourable for:

(a) All bars, with an inclination between 45° and 90° to the horizontal

(b) All bars which are horizontal or have inclination up to 45° to the horizontal and are:

a)       either placed in members whose depth in the direction of concreting does not exceed 250 mm

b)      or embedded in members with a depth greater than 250 mm, and when concreting is completed, are:   

•  either in the lower half of the member
• at least in concrete portion located below 300 mm from its top surface

Unfavourable-bond conditions :

• All other conditions are considered as unfavourable bond conditions.