on

 


        WEIGHT OF REBARS:


            ·       Steel weight calculation  =  d2/162.125 
                                    
                            (Example, d = 16mm)

=  (16)2/162.125        

                                                = 1.57 Kg/m3


            Formula Explanation : 

                      https://youtu.be/xmT_2DrHqqY     


        
    REBAR WEIGHT CHART:


       




The weight of rebar as per the Indian Standard (IS) code can be calculated using the following formula provided in IS 1786:2008, which is the standard specification for high-strength deformed steel bars and wires for concrete reinforcement:

Weight of Rebar (in kg/m) = D^2 / 162

Where:
- D is the nominal diameter of the rebar in millimeters.

This formula gives the weight of rebar per meter length. To convert the weight to other units, you can use appropriate conversion factors.

Keep in mind that the specific weight of rebar can vary slightly based on the exact composition of the steel used and manufacturing tolerances. It's always a good practice to refer to the most current version of the IS code and any additional guidance provided by local authorities or engineering associations for accurate information.


A Bar Bending Schedule (BBS), also known as a reinforcement schedule or rebar schedule, is a document that provides detailed information about the reinforcement requirements for a construction project involving reinforced concrete. The BBS is typically prepared by structural engineers or drafters and serves as a crucial communication tool between the design and construction teams. Here are some key points to note about a Bar Bending Schedule:

1. Reinforcement Details: The BBS provides information about the type, size, quantity, and placement of each type of reinforcement element, such as rebars, stirrups, ties, and mesh, for each structural element in the project.

2. Clear Visualization: The BBS includes detailed drawings or diagrams that illustrate the arrangement of reinforcement in different components of the structure, such as beams, columns, slabs, and footings. This helps the construction team understand how the rebar needs to be placed accurately.

3. Quantities and Lengths: The schedule specifies the length, quantity, and size of each reinforcement element. This information aids in ordering the right amount of rebar from suppliers and ensures minimal wastage.

4. Bending and Shaping Instructions: The BBS provides specific instructions on how each rebar needs to be bent, shaped, and placed in the concrete forms to achieve the intended structural integrity.

5. Calculation of Total Rebar: The BBS helps in calculating the total length and weight of reinforcement required for the project, which is essential for cost estimation and project planning.

6. Construction Sequence: The schedule may also include information about the sequence in which reinforcement is to be installed, taking into account the project's construction phases and requirements.

7. Site Efficiency: Having a well-prepared BBS ensures that the construction process is streamlined and efficient. Workers can follow the instructions without confusion, reducing errors and rework.

8. Compliance and Inspection: The BBS helps ensure that the constructed structure aligns with the design intent, as inspectors can reference the schedule to verify the correct placement of reinforcement.

9. Adherence to Codes and Standards: The BBS should follow the design codes and standards relevant to the project location to ensure the safety and reliability of the structure.

10. Revisions: If there are any changes to the design during construction, the BBS may need to be updated accordingly to reflect the modifications in the reinforcement requirements.

In summary, a Bar Bending Schedule is a crucial document in reinforced concrete construction, providing a comprehensive guide for placing reinforcement accurately and ensuring that the final structure meets design specifications and safety standards.



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