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Question
a)If column dimensions are 250*400mm , what will be  
cutting length for 8mm stirrups and how to calculate it? b)
If beam dimensions are 200*400mm , beam coveris 25mm , slab 
cover is 20mm , what will be the cutting length for 
stirrups? c)Column dimensions are 250*400mm , reinf. is 
12nos. bar of 16mm dia , stirrups provided are two legged, 
what will be the length of each ring?

Regards
 Question Submitted By :: Civil-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
1) let cover for column be 40mm (as u have not mentioned)
formula to determine cutting length of stirrup is given below
cutting length= (2A+2B)+(24D)
A=LONGER LENGTH OF COLUMN-2XCOVER=400-40X2=320MM
B=SHORTER LENGTH OF COLUMN-2XCOVER=250-40X2=170MM
D= DIAMETER OF STIRRUP BAR IN MM
therefore
cutting length=2X320+2X170 + 24X8 =1172MM=1.172 meter
2) given cover 25mm (as u have mentioned)
formula to determine cutting length of stirrup is given below
cutting length= (2A+2B)+(24D)
A=LONGER LENGTH OF BEAM-2XCOVER=400-25X2=350MM
B=SHORTER LENGTH OF BEAM-2XCOVER=200-25X2=150MM
D= DIAMETER OF STIRRUP BAR IN MM
therefore
cutting length=2X350+2X150 + 24X8 =1192MM=1.192 meter

NOTE SLAB COVER HAS NOTHING TO DO WITH CAL.OF STIRRUPS
3) ASSUME cover 30mm (as u have NOT mentioned)
formula to determine cutting length of stirrup is given below
cutting length= (2A+2B)+(24D)
A=LONGER LENGTH OF COLUMN/2 -COVER=400/2-30=170MM
B=SHORTER LENGTH OF COLUMN-2XCOVER=250-30X2=190MM
D= DIAMETER OF STIRRUP BAR IN MM
therefore
cutting length=2X170+2X190 + 24X8 =912MM=0.912 meter EACH

NOTE I HAVE CONSIDERED 8MM DIA STIRRUP BAR EVERY WHERE
UPTO 12MM DIA BARS CAN BE USED AS STIRRUPS GENERALLY
i am a civil engineer. if u r a civil engineer i think u should
by a bookits name is

estimation and costing by B.N.DUTTA u will get alot of
information through this book ....i think no one has been able
to explain the correct method ....good luck
 
Is This Answer Correct ?    82 Yes 11 No
Santosh Singh
 
Answer
# 2
a) let the cover 40 mm.in column,then
cutting length of ring is= 2*(170+320)+2*10*d-10*d
where hooks are= 10d+10d
deduction bend=2*5*d=10d
so length is =1060 mm
 
Is This Answer Correct ?    8 Yes 1 No
Md Gyasuddin Ahsan
 
 
 
Answer
# 3
If Cutting length of ring is 250-40*2=170
400-40*2=320
Total =170+320*2=980mm+hook calculate 10*8+80
We elongation on the 8mm rod
minus =980+96+96=1172-5*8
1172-40=1132 mm
 
Is This Answer Correct ?    5 Yes 1 No
Jaikumar
 
Answer
# 4
Can any other one help,please. 
Is This Answer Correct ?    17 Yes 14 No
Rohit_rangnekar1975
 
Answer
# 5
IN CASE OF COLUMN-
DIM.-200X400mm
CONCRETE COVER-
FOR COLUMN THICKNESS <250mm=25mm
FOR COLUMN THICKNESS >250mm=40mm

LENGHT OF TIE- 2A+2B=2X200+2X400=1200mm

NOW DEDUCT CONCRETE COVER-LENGTH OF TIE-COCNRETE COVER=1200-
2X40=1120MM

ALSO, DEDCUT BENDS- 2D FOR 45degrees
D FOR 90degrees

THEREFORE- CUT LENGTH OF TIE-1120-DX5=1120-2X8=1104mm(NO.
OF BENDS -5 )
Length of Hooks=10d=10x8=80MM
NO. OF hooks=2
Therefore-Length of Hook=2x20=160MM

CUTTING LENGHT OF BAR=1104+160=1264MM=1.264m
 
Is This Answer Correct ?    3 Yes 0 No
Shashank
 
Answer
# 6
a) let the cover 40 mm.in column,then
cutting length of ring is= 2*(170+320)+24*d-10*d+5*d
where hooks are= 12d+12d
deduction bend=2*5*d=10d
add 5 times of one dia of bar
so length is =1132mm.
 
Is This Answer Correct ?    12 Yes 11 No
Er. Manoj Baisla
 
Answer
# 7
a) Column size= 250*400,
so, L=250, B=400, cover = 40mm, bar dia 8mm
Cutting length of stirrups
= 2(L+B)-(8*cover)+(2*10d)-(1.5d*nos of bends)

(2*10d) is for 2hooks,
1.5d is deduction for elongation at each bend

Calculation =2*(250+400)-(8*40)+(2*10*8)-(1.5*8*5)
Cut length= 1080 mm.
 
Is This Answer Correct ?    1 Yes 0 No
Manish
 
Answer
# 8
wrong all answer 
Is This Answer Correct ?    0 Yes 0 No
Bitoy
 
Answer
# 9
For This cutting length will be
2x170+2x320-4x2d+9d
340+640-64+72=988
 
Is This Answer Correct ?    1 Yes 1 No
Rajeev
 
Answer
# 10
A)CUTTING LENGTH FOR 8mm Strips=2(250+400-2*80+2*10*8-2*5*8)
=1140+160-80
=1280 mm
 
Is This Answer Correct ?    0 Yes 0 No
Pravin K
 

 
 
 
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