Bar bending schedule(bbs)
Bar bending schedule(bbs)
1 Bar bending schedule is
the detail list of reinforcement bars which are to be fixed in the structure.
2 it is always prepared
before start of actual execution of work.
Benifits BBS
1 To estimate the cost of
total steel required for project and budgeting.
2 You can get the total
quantity of steel diameter wise required for a particular portion of structure
and place order / requirement for it ( by considering wastage )
3 You can use it to check
the contractors bill. ( if any steel other than the BBS is fixed in the
structure we should take a joint measurement of it and same sheet should be
attach to the bill)
How to Prepare a BBS
1 First you need to have
the structural detailed drawings.
2 A image is attached below to show sample BBS
2 A image is attached below to show sample BBS
A) BAR MARK - IT means key jab hum kisi bhi
structural elements (i.e slab , beams , columns , shearwall, walls, ramp ,
stairs
, foundation) ka jab Bar bending banaya jata hai tu har elements mein Bar marking ki jati hai takkey bar bending bananey mein asaani ho
B) Bar Size - it means key Bar DIA means key individual element mein jo jo bars use huey hain uska Dia kay hai hai woh is column mein likhtey hain
C) Spacing c/c - it means key element mein jo bar spacing provide ki hai after designing woh is column mein likhein suppose slab mein reinforcement #4 @ 8"c/c provide ki hai tu is column mein 8" spacing likheingey
D) No. of bars - it means , agar slab panel ki length 12 feet hai aur us 12 feet mein #4 @ 8" c/c reinforcement provide kihai tu
NO.OF BARS = (12(FEET) X 12(TO CONVERT FROM FEET TO INCHES) / 8"(SPACING) ) + 1 = 19 BARS IN 12 FEET LENGTH
E) NO. OF MEMBERS - IT MEANS KEY AGAR suppose slab panel jiska size 12 x 14 feet hai agar isi tarah key aur bhi slab panels hain means same size aur reinforcement bhi same hai us mein suppose 2 members slab panels same size aur renforcement hai tu no. of members mein 2 type kareingey
F) CUT LENGTH OF EACH BAR - YEH CUT LENGTH REMEMBER ALWAYS JO BENDING SHAPE (J) HOTI HAI USKI LENGTH KO CUT LENGTH KEHTEY HAIN , AB CUT LENGTH MEIN BENDING OR BAR SHAPE JO HOTI HAI DIFFERENT CODES KI YEH LENGTH CALCULATE KARNEY KEY DIFFERENT FORMULAES HOTEY HAIN JAISEY BS 8666 CODE KI SHAPES KI LENGTH CALCULATE KARNEY KEY FORMULAES HAIN WAISEY HI ACI KEY BHI HOTEYHAIN OR ANY OTHER CODES JIS SEY SCHEDULE BANAYA JA RAHA HAI
G) TOTAL LENGTH - IT MEANS F x E x D = Total length
H) WEIGHT - YEH BAR SIZE KA WEIGHT HOTA HAI MEANS #4 . #5 OR ANY OTHER BARS KA INDIVIDUAL SEPERATE WEIGHT HOTA HAI
I) TOTAL WEIGHT - IT MEANS H x G
J) BENDING SHAPE , YEH WOH SHAPE HAI BAR KI JO STRUCTURAL ELEMENT MEIN DETAILED KI JATI HAI
, foundation) ka jab Bar bending banaya jata hai tu har elements mein Bar marking ki jati hai takkey bar bending bananey mein asaani ho
B) Bar Size - it means key Bar DIA means key individual element mein jo jo bars use huey hain uska Dia kay hai hai woh is column mein likhtey hain
C) Spacing c/c - it means key element mein jo bar spacing provide ki hai after designing woh is column mein likhein suppose slab mein reinforcement #4 @ 8"c/c provide ki hai tu is column mein 8" spacing likheingey
D) No. of bars - it means , agar slab panel ki length 12 feet hai aur us 12 feet mein #4 @ 8" c/c reinforcement provide kihai tu
NO.OF BARS = (12(FEET) X 12(TO CONVERT FROM FEET TO INCHES) / 8"(SPACING) ) + 1 = 19 BARS IN 12 FEET LENGTH
E) NO. OF MEMBERS - IT MEANS KEY AGAR suppose slab panel jiska size 12 x 14 feet hai agar isi tarah key aur bhi slab panels hain means same size aur reinforcement bhi same hai us mein suppose 2 members slab panels same size aur renforcement hai tu no. of members mein 2 type kareingey
F) CUT LENGTH OF EACH BAR - YEH CUT LENGTH REMEMBER ALWAYS JO BENDING SHAPE (J) HOTI HAI USKI LENGTH KO CUT LENGTH KEHTEY HAIN , AB CUT LENGTH MEIN BENDING OR BAR SHAPE JO HOTI HAI DIFFERENT CODES KI YEH LENGTH CALCULATE KARNEY KEY DIFFERENT FORMULAES HOTEY HAIN JAISEY BS 8666 CODE KI SHAPES KI LENGTH CALCULATE KARNEY KEY FORMULAES HAIN WAISEY HI ACI KEY BHI HOTEYHAIN OR ANY OTHER CODES JIS SEY SCHEDULE BANAYA JA RAHA HAI
G) TOTAL LENGTH - IT MEANS F x E x D = Total length
H) WEIGHT - YEH BAR SIZE KA WEIGHT HOTA HAI MEANS #4 . #5 OR ANY OTHER BARS KA INDIVIDUAL SEPERATE WEIGHT HOTA HAI
I) TOTAL WEIGHT - IT MEANS H x G
J) BENDING SHAPE , YEH WOH SHAPE HAI BAR KI JO STRUCTURAL ELEMENT MEIN DETAILED KI JATI HAI
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