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Quantity of materials for RCC Columns

The design of RCC columns are significant, as in the framed structured building that is in the cutting edge development the frames are shaped by systems of columns and beams. A column is a structural member which is vertical and pivotally loaded and exposed to compressive powers, and having it's effective length (height) multiple times more noteworthy than the least cross-sectional element of itself. To satisfactorily calculate the quantity of columns, if it's not too much trouble follow this technique.

Estimation of fortified concrete works, for example, establishment, columns, beams, slabs platform are required for count of genuine expense of development and installment to the temporary worker. This article gives rules to the estimation including equations for the computation of amounts of different strengthened concrete works.

Estimation of Reinforced Concrete Works:

The Quantities can be adjusted to the closest two decimals. Concrete in Structural individuals, for example, columns, Beams and slabs will each be estimated independently.

No Deductions will be made for these:

  • Opening up to 0.1 m2
  • Volume involved by support.
  • Volume involved by pipes, conductors, sheathing, and so forth not surpassing 100cm2 each in cross-area.
  • Molds, dribbles shaping, chamfers, spreads adjusted or secured points, beds, furrows and refunds up to 10 cm in circumference.

Estimation of Concrete in Footings:

Volume of concrete = L x B x D for Rectangular and Square footing. For Trapezoidal Footing, Volume of Concrete is determined in two sections. Base Rectangular bit is determined independently and the Trapezoidal volume is determined independently.

  • Rectangular Volume = L x B x D
  • Trapezoidal Volume V= H/3 (A1 + A2 + SQRT(A1 + A2) )

Where A1 and A2 is the region of top and base square shapes, H is depth of footing.

  • Complete Volume = Rectangular Volume + Trapezoidal Volume

Where V= Volume; h= height;

Estimation of Concrete in Columns

Columns will be estimated from head of Column base to underside of first floor slab and along these lines from head of floor slab to underside of floor slab above. If there should arise an occurrence of Columns for flat slabs, flare of column will be incorporated with column for Measurement.

Once your ready to peruse the concrete development and point by point drawings, you can be effectively ready to discover

  1. Length
  2. Dividing
  3. Numbers of bars

No's of bar for slabs and stirrups is by implication identified with the range and Spacing.

  • No's of bar = ((Span - 2*clear spread)/spacing)+1
    • (adjusted to next full number)

For the stirrups, you are required to give additional bits for snares. Normally 10d is embraced for it, however to know it correctly, one can follow the code book for bar twisting timetable IS: 2502, indicating the Anchorage length (it even has the lengths to be deducted when the rebar is bent).

Advancement length is typically determined in the drawings and vital augmentations must be joined. Subsequent to discovering the all out cut Length of the bar, we for the most part make a table which pretty much looks like beneath.

  1. Dia.
  2. Cut length
  3. Numbers
  4. Unit Weight
  5. Total Weight

Unit Weight can be found effectively by taking steel density as 7850kg/cum.

All out Wt = Unit Wt * No's * Cut length

Most importantly you ascertain the quantity of Cubic Yards of Concrete in all Slabs, Columns and Beams which is a basic. Don't neglect to incorporate the establishment cushions or bases or beams. When you have decided the total measure of Cubic Years in the whole structure increases the complete Cubic Yards by the factor of 125 Lbs, 100 Cubic Yards of concrete will utilize 12500 Lbs of Steel support.

On the off chance that you need the right amounts, as a matter of first importance designs are to be made and drawings are to be prepared..There after bar bowing calendars are to be readied and from that you can discover the quantity of steel for slab, beam and column

On the off chance that you need to discover the surmised quantity of such steel, first off from the given drawing figure the volume of concrete for all the slabs, beams and columns independently. The volume of concrete of slab kg will be the surmised quantity of steel for slab. Please note that this 80 kg of steel is for one cum of concrete of slab

Moreover increase by 100 kg for every cum of concrete for the beam. For column, increase by 120 kg for every cum of column concrete. So as to do that, the basic design of the R.C. slab/column/beam ought to be finished.

On the off chance that it is (or once it's done) you can figure the region of steel in the cross area (you can take a 1m or 1ft strip in regards to the slab), and increase it by the ranges/heights, and you'll have the volume. Duplicate that by the unit weight of steel (7850 kg/m3), and you'll have weight.

Likewise, you will have to take into calculation any stirrups or anchors that may require extra rebar length.

To get more details, go through the following video tutorial.

Video Source: Quantity of materials for RCC Columns