How do you prepare a bar bending schedule for footing?
Steps involved in calculating the bar bending schedule of a footings:-
- Deduct the concrete cover to find the dimensions of bars.
- Find the Length of single X Bars & Y Bars.
- Find the total length of X bars.
- Calculate the weight of steel required per 1m.
- Calculate the total number of 12m bars required.
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.
How do you calculate bar footing?
FOOTING MAIN BAR’s: Length = {Total length – 2(Half diameter of the bar + Clear cover) + 2(Thickness of the slab –Bottom and Top clear cover – Half diameter of the bar)}. Length = 2 m – 2 (0.006 + 0.05) + 2 (0.250 – 0.075 – 0.05 – 0.006).
How is bar bend length 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 main bar in footing?
Main Reinforcement Bars are used to transfer the bending moment developed at the bottom of the slab. Distribution Bars are used to hold the slabs on either way and to resist the cracks and shear stress developed at the top.
How does BBS calculate number of bars?
HOW TO CALCULATE THE QUANTITY OF STEEL IN COLUMN (BBS)
- We have a column.
- Height = 3 meter.
- Cross section = 500 x 400 mm.
- No of vertical bars = 6 nos.
- the diameter of the vertical bar = 16 mm.
- Diameter of stirrup = 8 mm.
- stirrups center to center spacing = @150 or @ 200 mm.
- The calculation was to proceed into two steps.
What is BBS engineer?
Bar Bending Schedule (BBS) helps to determine the quantity of steel required in construction of your house. This helps to get the accurate estimation of steel. Once the calculation of cutting and bending is done it reduces the wastage of steel and it becomes economic.
What is a bending schedule in construction?
A bar bending schedule, or BBS as it is sometimes referred, is a comprehensive document that describes the type, size, mark, location, length, number and bending details for all rebar required for a build.
What is the main bar?
1. What are the main bars in a slab? The reinforcement bars that are placed in the tension zone of the slab to resist the bending moment & to transfer the superimposed loads to the supports that are provided for the slab are called main bars.
What is main reinforcement bars?
Main reinforcement bar is provided at the shorter span direction in order to transfer the bending moment developed at the bottom of the slab. The purpose of providing main bar is to transfer the bending load developed at the bottom of the slab to the beams.
What is the hook length for stirrups?
The Actual Length Of A Stirrup But, the hook length shouldn’t be less than 75mm.
How do you schedule a bar bending 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.