Answer / edakkathlath

1.Nominal mix are as just specified in is codes. Design mix
ratio is fixed by considering the load of the structure and
the quality of materials .nominal mix eg:M10 to M25
Design Mix eg: M30 onwards
2.structural design mean the details of reinforcement and
the mix of concreting
5. some time we have to provide extra bars as per the design
for carrying the load .Generally in simply supported beam at
mid span it is provided on the bottom and end at top

Answer / s c jayakumar

1.Nominal mix is standard mix formulated by BIS comittee
for construction use where as design mix is that,With the
optimum cement content and proprely graded/blended mix
constituents used to form rigid congolomarate for better
durability.Using of optimum cement content is to get
economic construction without compromising of durability of
structure.

Answer / sujit

Nominal mix is the some ratio are fixed by Is code india.
and design mixed is the ratio fixed by considering avilable
material, strength and enviornment.
2.Structural design means design a structure ( means
skeleton of a body ) of thing
3.spt- standard penetration text
Least count of theodlite is 0 degree 0 min 5"( second)

very simple or less time consuming formula for reinforcement calculation by moment

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