tis 20-2543
TRANSCRIPT
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ICS 77.140.60 ISBN 974-608-471-2
THAI INDUSTRIAL STANDARD
. 20 2543
: STEEL BARS FOR REINFORCED CONCRETE : ROUND BARS
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:
6 10400
2023300
118 68 23 2544
. 20 2543
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(2)
9
.
.
...()
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(3)
15 .. 2511
: .202527101 173 23 2527
3
.202543 : .242536 : .2112527 :
BS 4449:1997 Carbon steel bars for the reinforcement of concrete
JIS G 31121987 Steel Bars for Concrete Reinforcement
ASTM A 615/A615M96a Deformed and Plain BilletSteel Bars for Concrete Reinforcement
. 244 4-2525 4 ()
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(5)
2838 ( .. 2544 )
.. 2511
:
: .202527
15 .. 2511847 (..2527).. 2511
: 9 .. 2527 : .20-2543
: .20-2543
24 .. 2544
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1
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: 1.
1.1 :
1.2 (billet) (bloom) (ingot) (open hearth) (basic oxygen) (electric arc furnace)
1.3 3.40
2.
2.1 (bar) 2.2 (bundle) 2.3 (coil) 2.4 (nominal size)
12.5 (nominal mass) 1
12.6 1
3.
3.1 SR 24
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2
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4.
4.1 1
1 (2.4 2.5 4.1)
1. = 3.141 6 ( ) 2
2. = 0.007 85 ()
4.2
4.2.1
2 34.2.2 2 4
9.1
4
RB 6 6 28.3 0.222
RB 8 8 50.3 0.395RB 9 9 63.6 0.499
RB 10 10 78.5 0.616
RB 12 12 113.1 0.888
RB 15 15 176.7 1.387
RB 19 19 283.5 2.226
RB 22 22 380.1 2.984
RB 25 25 490.9 3.853
RB 28 28 615.8 4.834
RB 34 34 907.9 7.127
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. 202543
2 (4.2)
4.3 39.2
3 (4.3)
10 + 55 0
10 + 55 + 5 1 10 120
0
RB 6 0.222 10.0 5.0
RB 8 0.395
RB 9 0.499
RB 10 0.616
RB 12 0.888
RB 15 1.387 6.0 3.5
RB 19 2.226
RB 22 2.984
RB 25 3.853
RB 28 4.834
RB 34 7.127
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4
. 202543
5.
5.1 4
9.3
4 (5.1)
6. 6.1
6.1.1 ()
6.1.2
6.2 6.2.1
6.2.1.1 385 6.2.1.2 235 6.2.1.3 21
9.4
6.2.2 9.5
7. 7.1
7.1.1
()
0.280
0.058 0.058
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5
. 202543
(1) (2)
7.1.2 50 9.6
7.2 (1) (2) (3) (4) () ()(5) (6) (7)
7.3
8.
8.1 8.2
8.2.1 ()
8.2.1.1 5 1
8.2.1.2 4.3 5
8.2.2 8.2.2.1 8.2.1 1
1.50 5 1 1.50
8.2.2.2 6.1 5
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6
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8.2.3 8.2.3.1 8.2.2 8.2.3.2 4.2.1 5
4.2.2 5
(8.2.1 8.2.2 8.2.3)
8.2.4
8.2.4.1 8.2.3 5
8.2.4.2 7.1.2
8.2.5 8.2.5.1 8.2.3 3
500 3 2 1 1
8.2.5.2 8.2.5.1 1 500 1 1
8.2.5.3 5.1 6.2.1 6.2.2
(1) 6.2.1
6.2.1.3
/
150 5 0
150 500 20 1 500 32 2
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(2) 6.2.1 (1)14 7
(3) 6.2.1
(1)14 7 2 6.2.1
(4) 6.2.22 6.2.2
0.2
8.3 7.1.1 7.2 8.2.1.2 8.2.2.2 8.2.3.2 8.2.4.2 8.2.5.3
9. 9.1
9.1.1 9.1.1.1 1 9.1.1.2 1
9.1.2 1 1
9.1.3 4
9.2 1
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9.3
9.4 9.4.1
9.4.2
9.4.2.1 (heattreatment)
9.4.2.2 RB 15 RB 19 15 5.5
9.4.2.3 1
G 5 DS1S2 0.25 D
D
+1
1 (9.4.2.3)
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9.4.3 . 244 4
9.4.4 9.4.4.1
(1)
(2)
k =
9.4.4.2 (1)
(2)
9.4.4.3
9.4.5
9.4.5.1 (1) (2) (3) (4) (5) k(6) 2
= x 100
=
=
= k x
=
3.141 6 ()2
4
= k x
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(7) (8) (9)
9.4.5.2 1
9.5 9.5.1
9.5.1.1
9.5.1.2 U 3 U
9.5.2
9.5.2.1
9.5.2.2 U
9.5.3 180
9.5.4
9.6 9.6.1
0.1
9.6.2
9.6.3 5 1