reinforcement bars - natsteel
TRANSCRIPT
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Item Description
Storage space Space required for site storage of steel reinforcement can be reduced by up to 20%
Steel Savings Potential to reduce steel reinforcement by up to 20% compared to Grade 500 steel
Logistics Up to 20% less trucks delivering reinforcements to site – frees up site space and saves crane, manpower & time
Site Crane Handles up to 20% less steel and frees up crane time for other construction activities thereby speeding up construction
Concrete Savings Reduction in structural element size is possible when used with appropriate grade of concrete and results in overall dead load being reduced
More usable space More �oor space is usable with column size reduction
Less formwork Possible to reduce formwork needed for Columns and Beams due to member size reduction
Lighter foundations Due to reduction in members size resulting in lighter super structure, foundation loads and cost can be reduced
Manpower - Steel �xing / Installation
Up to 20% less workers are required to install / �x steel reinforcement onsite
Improved Safety Site safety will be improved due to less material handling, steel �xing etc
Time reduction Overall time savings can be accomplished by factoring in the earlier stated bene�ts
Cost reduction Overall cost reduction can be achieved from reduced Material, Manpower, Construction Time etc
Environment Reduced – Construction noise, Fuel consumption etc
Steel mass for various reinforcement bar sizes
Mild steel round bar Deformed Bars
Diameter (mm) 6 8 10 13 10 13 16 20 22 25 28 32 40 50
Mass (kg/m) 0.222 0.395 0.617 1.042 0.617 1.042 1.579 2.466 2.984 3.854 4.834 6.313 9.864 15.413
Length (m) 6 6 12 12 12 12 12 12 12 12 12 12 12 12
Weight / bundle (mt)* 1.002 1.005 2.006 2.013 2.029 2.026 2.046 2.071 2.005 2.127 2.088 2.121 2.131 2.035
*Bundle sizes may vary
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Grade 500
Speci�cations Grade Yieldmin(N/mm2)
Tensilemin(N/mm2)
Ratio(min)
Cal.method
Elong5D(min %)
Agt(min %)
Bend(size : mm)
Rebend(size : mm)
SS2 Part 2: 1999
SS2 PART 1: 1999
RB500W 500 550 1.05 Nominal 14 6/8/10:~3D12:~4D16&20:5D25/32/40:~6D(160° to 180°)
6/8/10:~5D12:~5D20&25:8D32/40:10D(90° - 30min - 20°)
300 300 330 1.10 Nominal 16
16
6/8/10:~2D12:~2.5D16&20:3D(160° to 180°)
SS 560: 2016 B500B 500 - 650 Y*1.08 1.08 Nominal 5
2.5
Others
Speci�cations Grade Yieldmin(N/mm2)
Tensilemin(N/mm2)
Ratio(min)
Cal.method
Elong5D(min %)
Agt(min %)
Bend(size : mm)
Rebend(size : mm)
AS/NZS 4671: 2001
AS/NZS 4671: 2001
500N 500 - 650 Y*1.08 1.08 Nominal 5 all sizes : 4D(<16 bend 90°>20 bend 180°)
<16mm : 4D>20mm : N.A.(90° - 1hr - 90°)
BS 4449: 2005 B500B 500 - 650 Y*1.08 1.08 Nominal 5 <16mm : 4D>16mm : 7D(90° - 1hr - 20°)
≤16mm : 3D>16mm : 6D
≤16mm : 4D>16mm : 7D
≤16mm : 3D>16mm : 6D
≤16mm : 4D>16mm : 7D
B600B 600 - 780 Y*1.08 1.08 Nominal 5
<=16mm : 3D>16mm : 6D(160° - 180°)
<=16mm : 4D>16mm : 7D(90° - 1hr - 20°)
B600A 500 - 650 <8mm:1.02>=8mm:1.05
Nominal <8mm: 1.0>=8mm: 2.5
250N 250 Y*1.08 1.08 Nominal 5 same as 500N same as 500N
500E 500 - 600 Y*(1.15-1.40) 1.15-1.40 Nominal 10 same as 500N same as 500N
300E 300 - 380 Y*(1.15-1.50) 1.15-1.50 Nominal 15 same as 500N same as 500N
500L 500 - 750 Y*1.03 1.03 Nominal 1.5 3D 90° - 1hr - 20°
BISIS 1786: 2008
SIRIM QAS
MS 146: 2014
MS ISO 16120-2: 2008
Fe500D 500 1.1 E�ective 5 </=20~3D>20~4D(180°)
</=10^~4D>10~6D45° - 30min(100°C) - 22.5°
500B
NA (wire rod grade)
500 - 650 Y*1.08
560
620
1.08 Norminal <=16mm : 4D>16mm : 7D(90° - 1hr - 20°)
500A 500 - 650 <8mm:1.02>=8mm:1.05
<8mm: 1.0>=8mm: 2.5
5.0
Norminal <=16mm : 4D>16mm : 7D(90° - 1hr - 20°)
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SLSI
SLS 375: 2009 RB 500 500 - 650 D<8mm ~ 1.02D>=8mm ~ 1.05
D<8mm ~ 1.0D>=8mm ~ 2.5
E�ective 3D(180°)
</=16~4D>16~7D90° - 60min(100°C) - 20°
14RB 460 460 D<8mm ~ 1.02D>=8mm ~ 1.05
D<8mm ~ 1.0D>=8mm ~ 2.5
E�ective 3D(180°)
</=16~4D>16~7D90° - 60min(100°C) - 20°
D<32mm~1832<=D<40mm~16D=40mm~14
D<32mm~1432<=D<40mm~12D=40mm~10
SNI
SNI 07-2052-2002 Bj TS 40 390 5D(180°)
Bj TS 50 490 <=25mm~5D>25mm~6D(180°)
5 0 0 E M A 5 0 0 E M A