What is the Bar bending Schedule explain in detail?
What is Bar Bending Schedule (BBS)? Bar bending schedule is a list of reinforcement bars in a tabular form giving the particulars of bars, the shape of bending with sketches, length of each, total length, and total weight. Usually, for each type of RCC work, a schedule of bars is prepared.
What should be mentioned in a bar bending schedule?
Bar bending agenda summarizes all of the wanted particulars of bars – diameter, shape of bending, length of every bent and straight portions, angles of bending, overall length of every bar, and number of each type of bar.
How is Bend bar calculated?
KNOW HOW TO CALCULATE THE CUTTING LENGTH OF BENT UP BARS
- Inclined Length = D/(sin 45°) – dD/ (tan 45°)
- = (D/0.7071) – (D/1)
- = (1D – 0.7071D)/0.7071.
- = 0.42 D.
What is cutting length in bar bending schedule?
Cutting Length of Main Bar with Bend Formula: Where, L = Span – (Conc. Cover x 2), if you need bend deduction then you should deduct 4d (2d + 2d) for two 90 Deg bends from main bar cutting length.
What is the format of BBS?
Bar Bending Schedule (BBS) is basically the representation of bend shapes and cut length of bars as per structure drawings. BBS is prepared from construction drawings. For each member separate BBS is prepared because bars are bended in various shapes depending on the shape of member.
Is codes for bar bending schedule?
Format of Bar Bending Schedule as per Code IS:2502-196
| Location | Mark Designation | Size and Type |
|---|---|---|
| (1) | (2) | (3) |
| Column | C4 4R 25 N | MS Road 25 mm |
How do you calculate bend rod length?
How To Calculate Bend Deduction Length Of Bar
- How To Calculate Bend Deduction Length Of Bar:
- For 45° bend = 1 x d.
- For 90° bend = 2 x d.
- For 135° Bend = 3 x d.
- For 180° bend = 4 x d.
- Where d = diameter of the bar.
How is bar bending schedule calculated for slab?
Steps to calculate the Reinforcement required for Slab:-
- Deduct the cover for finding length of bar.
- Evaluate the length of the distribution bar.
- Calculate the Value of ‘D’ (Depth of slab- Top cover- Bottom cover)
- Find out the No. of Bars.
- Compute the Total wt of steel required for slab reinforcement.
What is LD in steel?
Development length is certain minimum length of the bar required on either side of a point of maximum steel stress, in order to transfer the bar force to surrounding concrete through bond without slip ,so as to prevent bar from pulling out under tension.
How do you get D2 162?
Weight of steel per metre = Area of Steel X Density of Steel X Length of Steel
- The unit weight of steel is 7850 Kg/m3. Refer Unit weight of construction materials topic.
- Area of steel (circular shape) = πr2 or πD2/4.