T H E A R T O F R E B A R

REINFORCEMENT SCHEDULE

WHY REINFORCEMENTS

CONCRETE is good in compression but WEAK in TENSION

To cater the loads acting upon the concrete member (BM, SF, DC and DT ) either in horizontal or vertical directions

Advantage of reinforcement bars –Good in compression as well as in tension

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REINFORCEMENT ARRANGEMENT IN SLAB3

HOW THE FOLLOWING IS BEING DONE

Bending of the rodsPlacing of the cover blocksColumn reinforcement

Beam reinforcement

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DIMENSIONING IN BEAMS ACCORDING TO DESIGN

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WHAT IS BBS

Comprehensive representation of cut and bent bars as perthe design requirements , and reinforcement detailer

Helps in determining appropriate material quantities, and cost estimation.used to communicate requirements for cut & bent shapes from the detailer to the fabricator

WHY BBS ?

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WHAT BBS SHOULD CONTAIN

Identification of the structural memberPosition of the bars in the structureBar markDiameter / size of the barNo. of bars of one type in each structural memberTotal no. Of bars of each typeTotal straight length of the barShape and bending dimensions of the barChairs providedRemarks, if any.DRAWING No., LOCATION, UNIT/BLOCK/BUILDING/TOWER - NAME/No.

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SCHEDULE

Compact summary of the dimensions of the concerned structural part of all the bars effectively shown in a tabular column.Prepared with reference to the given structural drawing.Measurements to be incorporated from the structural drawing.Missing dimensions can be considered with reference to architectural drawing.

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HOW SHOULD A SCHEDULE BE

Must be supplemented with diagrams and sketches wherever necessaryExact arrangement of reinforcement shall be shownNo abbreviations to be included.Exact measurements must be recorded including the deductions for bends & clear cover.Dowels and extra bars provided should be indicated.

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SPACING OF RODS11

BEAM BBS CALCULATION12

EXAMPLE - 2

CHECK THE HANDOUT

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I.S CODES

IS 456 – General notes – Transverse reinforcements

IS 2502 – Code of Practice for bending and fixing of bars for concrete reinforcements

IS 5525 – Recommendation for detailing off reinforcement in RC works

SP 34 – Handbook on concrete reinforcement and detailing

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