There are three theories related to the design of the RCC
(1) Working stress method
(2) Ultimate Load Method
(3) Limit State Method
In working stress method it is assumed that stress and strain vary linearly in the elastic limit for both concrete and steel but it is not so for the concrete in actual. Strength of the materials are divided by the factors of the safety to design it for lower values.
Ultimate Load method is based on the Whiteny's theory. The concrete is designed for its ultimate strength and the stress strain is non-linear opposed to that in the working stress method. The external loads are divided by the load factors to design them for factored loads.
In limit state method there are four limits which a concrete structure is designed for.
(a) Limit state of collapse
(b) Limit state of Serviceability/deflections
(c) Limit state of cracking
(d) Limit state of vibration.
..To be continued...
(1) Working stress method
(2) Ultimate Load Method
(3) Limit State Method
In working stress method it is assumed that stress and strain vary linearly in the elastic limit for both concrete and steel but it is not so for the concrete in actual. Strength of the materials are divided by the factors of the safety to design it for lower values.
Ultimate Load method is based on the Whiteny's theory. The concrete is designed for its ultimate strength and the stress strain is non-linear opposed to that in the working stress method. The external loads are divided by the load factors to design them for factored loads.
In limit state method there are four limits which a concrete structure is designed for.
(a) Limit state of collapse
(b) Limit state of Serviceability/deflections
(c) Limit state of cracking
(d) Limit state of vibration.
..To be continued...
No comments:
Post a Comment