Thursday, August 28, 2014
Thursday, May 16, 2013
Modulas of elasticity
Modulus of Elasticity
Young's modulus is the most common elastic modulus, sometimes called the modulus of elasticity, but there are other elastic moduli measured, too, such as the bulk modulus and the shear modulus.
definition:- it is the ratio of stress to strain
units:-psi,ksi,MPa,N/mm^2 etc.it has units of pressure in general reference.
Steel:- modulus of elasticity with different units is
29000 ksi, 200,000 MPa, 205,000N/mm^2
concrete:- modulus of elasticity depends on the weight and compressive strength of concrete, for normal weight concrete following formula is used
E= 57000 sqrt(fc')
Young's modulus is the most common elastic modulus, sometimes called the modulus of elasticity, but there are other elastic moduli measured, too, such as the bulk modulus and the shear modulus.
definition:- it is the ratio of stress to strain
units:-psi,ksi,MPa,N/mm^2 etc.it has units of pressure in general reference.
Steel:- modulus of elasticity with different units is
29000 ksi, 200,000 MPa, 205,000N/mm^2
concrete:- modulus of elasticity depends on the weight and compressive strength of concrete, for normal weight concrete following formula is used
E= 57000 sqrt(fc')
Sunday, August 26, 2012
Friday, August 24, 2012
slab_top_reinforcement
This drawing is taken from Dr.G.S. Suresh lecture presentation on slab detailing.
Rebars are supported on the one side only so how efficient are taking stresses?
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