Category: Structure Design
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Concrete cover requirement as per IS 456
As per IS 456, the concrete cover requirement is a critical aspect of reinforced concrete design and construction. This requirement specifies the minimum thickness of concrete cover that must be provided over the reinforcement steel in a concrete structure to protect it from corrosion and ensure adequate bond strength. The cover thickness varies depending on…
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Center of gravity explained
The center of gravity is a concept that is widely used in physics, engineering, and other scientific fields. It is an important concept that helps us to understand the stability and equilibrium of objects. In this blog post, we will explain what the center of gravity is, how it is calculated, and how it is…
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A guide to structural load calculations – 1: Dead Load
How a structure is designed? Loads are assessed: basic loads are defined as which loads will be coming on the structure. Structure is analyzed upon applying these loads and combination of it. Structure is designed for the results of analysis. Structure is designed to withstand the stresses caused by these forces and its combinations. Structure…
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What are the development lengths of bars for different grade of reinforcement and concrete?
Here are the development lengths of different grade reinforcement bars for different concrete grades. Development lengths are in mm. 1. Development lengths for plain bars of grade Fe250. 2. Development lengths for HYSD bars of grade Fe415. 3. Development lengths for HYSD bars of grade Fe500. Hope you find it useful. Comment if you have…
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What are the permissible horizontal deflection in building?
# For wind case : permissible max. Horizontal deflection is H/500. # For EQ case : permissible max. Horizontal deflection is H/250. # For EQ case you have to satisfy story drift criteria of 0.004H also. All deflection worked out shall be for service loads only i.e. for unfactored combinations.
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How to find the mass of reinforcing bar quickly?
Simple way to find the weight of reinforcing bar: The density of steel is 7850 kg/m³. Now let say you want weight per m. then what will be the formulation? Check this out. 7850(kg/m³) x [pi()/4 x d² ](m²)= mass of the bar per m. (eq. 1) Now resolving this we get 7850 x…
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Which are the IS codes for foundation?
1) IS 1904 – Code of practice for design and construction of foundations in soils : general requirements. 2) IS 1080 – Code of practice for design and construction of shallow foundations in soils (other than raft, ring and shell ) 3) IS 2950 – Code of practice for design and construction of raft foundations.…
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What are the Properties of structural steel (Reinforcement)?
Basic Properties of steel Unit mass of steel = 7850 kg/m3 Modulus of elasticity = 2.0 x 10^5 N/mm2 Poisson ratio = 0.3 Modulusof rigidity G = 0.769 x 10^5 N/mm2 Co-efficient of thermal expansion = 12 x 10^-5 /degree celcius