Answer / raghuram

MAIN PURPOSE OF REINFORCEMENT IN BEAMS IS TO RESIST TENSION
IN THE LOWER FIBRES BELOW THE NEUTRAL AXIS. AS THE TENSILE
STRESS IS 0 AT THE CENTRE AND INCREASES LINEARLY TO THE
BOTTOM FIBRE WHICH INDICATES THAT MAX TENSILE STRESS IS AT
THE EXTREME FIBRES SO REINFORCEMENT IS NOT PROVIDED AT THE
CENTRE

Answer / samira

in centre there is no compression and tension.. so we
provide reinforcement in the corners

Answer / sreenivas

The concrete weak in tension and strong in compression.
to resist the load in tension side reinforcement
provided.To make proper anchorage nominal reinforcement
provided in compression reinforcement.

if we provide reinforcement in center it canot contribute
either compression and tension.So no need to provide
reinforcement in center of beams.
If depth of beam large i.e more than 700mm normally we
provide extra reinforcement at center to hold the
compression reinforcement properly
But only in case when beam subjected torsion ,to resist
torsional moment we provide extra reinforcement in center.

Answer / koushik

Column is a compression member ,and this compression force
is distrubuted by concrete and steel.If ther is any
eccentric forces act then reinforcement at extreme fibres
will take care of those tensile stresses.so,there wont b
any tensile stress at centre of column so no need of
reinforcement at centre

Answer / miidangriika

Why do we provide steel to the concrete, is it not for
taking tension as concrete can take only compression.

As we know that the maximum tension takes place on the
outer face of the beam or column, therefore the the steel
is provided to the outer face of the beam or column.

Answer / md gulam moinuddin

first of all i would like to make the Question very Clear

Y reinforcement is not provided at centre for beams is not
complte Question .
Actually reinforcement is not provided in centre of beam at
top ,while the case is reverse for bottom reinforcement ,
at bottom reinforcement are provided at centre .

This is all bcoz of moment ,

Since the moment is max at centre of beam ,
if u have idea of elastic curve then it would be very
clear .
and It should also not that reinforcement is not provided ,
in such region where reinf is not required nominal reif are
provided

Answer / abhishek

Reinforcement mainly required in region where tension is high,therefore tension is more on the outer portion of structure as compare to the middle part
So, reinforcement is provided on sides.

Answer / subhasbabu

NONE OF THE FORCES ACTING AT HE CENTRE OF THE SPANS BECAUSE
IT IS NEUTRAL AXIS

Answer / beamers

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.

wat is fe full form in fe4l5?

7 Answers  

What are the responsibilities of a construction manager?

0 Answers  

1)What's are the diff. types of column based on loading? 2)Is there any difference bitween Development length & Anchorage Length? 3) What is the basic diff. between one way & two way slab? 4) Where should use OPC & where should PPC?

3 Answers   TPSC,

Define a polyline?

0 Answers  

i have applied 40mm spacer in the concrete for tie beam. is it correct? kindly give me if there any code available

0 Answers   Indus Construction,

How to calculate cement, water, fly ash amount for 1 cum if the w/c ratio is 0.4 and fly ash to cement ratio is 1:9

0 Answers  

how to calculate cost of raw materials of a building for 1000 sqft & also consolidated cost of labour in a 1000 sqft building

0 Answers  

what is the spacing required for chairs for reinforcing in raft footing.

6 Answers   Earthcon,

What is the best concrete grade for raft foundation up to 1.5 meters depth?

3 Answers  

what is Quantity of stone and sand required for one cubic meter of stone work (UCR)

0 Answers  

what is the unit for sbc of soil

4 Answers  

1.DIFFERENCE BETWEEN NOMINAL MIX AND DESIGN MIX? 2.WHAT IS MEANT BY STRUCTURAL DESIGN? 3.IN STAAD WHY WE RELEASE MOMENT TO A MEMBER? 4.ON WHAT BASIS PARTIAL FACTOR OF SAFETY ARE DECIDE?FROM THE LOAD COMBINATION? 5.WHY WE PROVIDE EXTRA BAR & DEVELOPEMENT LENGTH AT TOP? 6.FULL FORM OF SPT & SMB? 7.WHAT IS MEANT BY ITP IN A CONSTRUCTION PROJECT? 8.WHAT IS LEAST COUNT OF THEODOLITE SURVEY? 9.WHAT ARE THE CAUSES OF FAILURE OF FOUNDATIONS AND REMEDIAL MEASURES? 10.WHAT ARE THE VALUES OF COMPRESSIVE STRENGTH? 11.STEEL CALCULATION FOR FOOTING,BEAM & SLAB? 12.WHAT IS MEANT BY GANTRY GIRDER? 13.IN SITE HOW WE CAN IDENTIFY THE ONE WAY, TWO WAY SLAB? 14.DIFFERENCE BETWEEN ANCHORAGE LENGTH & DEVELOPEMENT LENGTH? 15.BEARING CAPACITY OF STEEL SHUTTERING?LOAD CARRYING FOR SHUTTERING?

3 Answers