AMIE INDIA Students Forum

[prayrona]

If all civil engg student can share their notes in these forum,all of we are enriched our knowledge.
Without notes u can give ur suggestion or any idea for civil enng student or professionals.
U can also give ur valuable experience to us .

[irfanmasiullah]

Hello,
I just cleared section A and enrolling for section B- civil...

[prayrona]

Do you know differenence between design mix and nominal mix?Nominal mix means mixing cement, fine aggregates and coarse
aggregates based on volume
Eg: 1:2:4 mix means mixing one volume of cement with two
volumes of sand and four volumes of coarse aggregates.This
is normally used when the the volume of concrete work to be
done is less.
Design mix is a trial and error procedure.Here the
characteristics of the aggregates cement and water used for
concrete is first analysed and these are mixed in ratio of
their weights and is tested for the design strength.Here
better quality control is maintained and also the
unnecessary wastage of materials is less.

A Design mix is that mix which uses minimum quantity of
components to attain the designed strength of concrete
whereas in a nominal mix attanining the characteristic
compressive strength is the criteria of mix proportioning.

[prayrona]

Beams are not provided with reinforcement at the middle
(center)simply because stress at that section is minimal if
you know the strain diagram of a beam section, that even
you provide steel on center the beam will not utilized
these bar because these bar will not yield meaning
useless,but in practice if your beam depth is greater than
600 mm we provide side bars.One analogy is that if you are
using hollow tube either circular or rectangular,as beam or
column members even though its hollow still they can carry
much load because external fiber of section is most
stressed.

[garyspeed]

Yes...it happens and all students share their notebooks...