Importance of IS 456 Code Book
As a civil engineer one should know more in IS 456 code book. Read the entire code book at least once.
NOMINAL COVER TO MEET DURABILITY REQUIREMENTS: (clause 26.4.2 table 16)
UNIT WEIGHT: (clause 19.2.1)
Some of the important basics are:
MODULUS OF ELASTICITY OF STEEL: (clause 5.6.3)
The modulus of elasticity of steel shall be taken as 200
kN/mm2. The characteristic yield strength of different steel shall be assumed
as the minimum yield stress/0.2 percent proof stress specified in the relevant
Indian Standard.
MODULUS OF ELASTICITY OF CONCRETE: (clause 6.2.3.1)
The modulus of elasticity of concrete can be assumed as
where,
Ec is the
short term modulus of elasticity in N/mm2.
Unless more accurate calculations are warranted, the unit weights of plain concrete and reinforced concrete made with sand and gravel or crushed natural stone aggregate may be taken as 24 kN/mm2 and 25 kN/mm2 respectively.
