In this article, we explained Maximum And Minimum Spacing Of Beam, Column,
Stirrups, Slab & Footing Which Will Be Use Full For Civil
Engineers
What Is The Minimum Bar Spacing In Reinforced Beams According To IS 456?
The minimum horizontal spacing between two parallel main bars must be the
diameter of the larger bar or the maximum size of the coarse aggregate plus
6mm.
However, if compression is performed by a needle vibrator, the gap can be
further reduced to 2/3 of the nominal maximum size of the coarse
aggregate.
ALSO READ: Maximum Size Of Concrete Slab, Beam & Column | Calculation
The minimum vertical distance between two main bars shall be
· 16 mm
· 2/3 of the nominal size of coarse aggregate
· Maximum size of the bar In the beam
In general, the spacing between two bars in a beam depends on the maximum
aggregate size used in the concrete. The minimum spacing between the two
bars can be about 50–75 mm.
What Is The Maximum Bar Spacing In Reinforced Beams According To IS
456?
Normally this spacing will be as mentioned below:
· For beams, these distances are 300 mm, 180 mm and 150 mm for grades of main
reinforcement of Fe 250, Fe 415 and Fe 500, respectively.
· The maximum spacing between two secondary parallel bars shall be 5d or 450
mm or whichever is less
What Is The Minimum Bar Spacing In Reinforced Column?
The minimum gap between two reinforcement bars should be equal to the
maximum aggregate grain dimension with a margin of at least 5 mm. For
greases, the maximum total grain dimension is 32 mm for normal concrete and
16 mm for self-compacting concrete.
What Is The Maximum Bar Spacing In Reinforced Column According To IS
456?
Normally these spacing will be as mentioned below:
For beams, these distances are 300 mm, 180 mm and 150 mm for the main
reinforcement classes of Fe 250, Fe 415 and Fe 500, respectively.
The maximum distance between the two secondary parallel bars should be 5D
or 450 mm or whichever is less.
What Is the maximum Spacing Of Stirrups In Beam?
In rectangular beams, the maximum spacing of vertical stirrups is in the
mid-span.
This is because the mid-span has very little shear and uses vertical
stirrups to counteract the shear. The spacing of the vertical stirrups is
minimal near the supports due to the maximum shear force of the
supports.
Spacing of Vertical Stirrups should not exceed
· 0.75d
· 300mm
Criteria for fixing vertical stirrup spacing in structural members are
given in IS:456 and should not be greater than the values below.
· Least lateral dimension
· Sixteen times the dia of the smallest longitudinal bar.
· 300 mm.
ALSO READ: Minimum Size Of Concrete Slab, Beam & Column
What Is Minimum Spacing Of Stirrups In Beam?
The formula for stirrups spacing in the beam
According to cl. 26.5.1.5 of IS 456,
Maximum spacing of the stirrups = 0.75 d
Example
Depth of beam 600
= 0.75 (600) = 450mm
So,
We select 10 mm, double legged stirrups @ 150 mm c/c.
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What Is The Minimum Bar Spacing In Slab?
The minimum spacing between two reinforcement bars should be at least equal
to the maximum coarse aggregate dimension plus the margin of 5 mm
ALSO READ: What Is The Minimum Thickness of Concrete Footing?
What Is The Maximum Bar Spacing In Slab As Per IS-Code?
In the case of the RCC slab, the maximum spacing between the two parallel
main reinforcement bars should be 3D or 300 mm or whatever. In the case of
the RCC slab, the maximum spacing between two secondary parallel wires
should be 5D or 450 mm or whatever.
The spacing of the main steel in a slab should not exceed the
following:
· 3 times the effective depth of the slab
· 300 mm
The spacing of the bars provided to act as distribution steel or bars
provided for preventing to temperature and shrinkage stresses shall not
exceed the following:
· Five-time the effective depth of the slab
· 450 mm
What Is The Minimum Bar Spacing In Slab As Per IS-Code?
The minimum gap between two reinforcement bars should be equal to the
maximum aggregate grain dimension with a margin of at least 5 mm. For
greases, the maximum total grain dimension is 32 mm for normal concrete and
16 mm for self-compacting concrete.
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What Is The Maximum Bar Spacing In Footing As Per IS-Code?
The minimum reinforcement in the footing slab specified by the code is
0.12% and the maximum spacing specified is 3 times the effective depth or
450mm whichever is less.
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Replacement of steel at site in the absence of designed structural details
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