1

1618 ( .. 2533 )

.. 2511

( 1)

. 572530

15 .. 2511

. 572530 1294 (.. 2530) 24 .. 2530

1. . 572530 . 572533

2. 1.1 1.1

3. 2.2 2.3 2.4 2.2

(faceshell) (web) 1

2.3 1

2.4 2 1

4. 1

1 ( 2.2 2.3 2.4)

5. 3.

3.

3.1 2 3.1.1 1 1

3.1.2 2 2

3.2 3

3.1.1 .

3.1.2

3.2.3

6. 1 2

7. 6.2 6.3 6.2

3

. 109

6.3 ( 1) 4

8. 4

4 ( 1)

2

9. 1) 4 1)

( ASTM C 426)

10. 7.1

7.1

(1)

1 1(2)

11. 8.2

8.2 10

12. 8.3.1 8.3.2

8.3.1 . 109

8.3.2

4. 6.

4. 6.1 6.2 6.3 2

4. 6.1 6.2 6.3 85

3 270

14 .. 2533

107 119

10 2533

3

UDC 691.327-478:69.022 ISBN 974-811-70-9

THAI INDUSTRIAL STANDARD

. 57 2530

STANDARD FOR HOLLOW LOADBEARING CONCRETEMASONRY UNITS

6 10400

0 2202 3300

105 8 14 2531

. 57 2530

(2)

55

...

(3)

15 .. 2511

. 572516 91 12 26 2517

ASTM C 9081 Standard specification for hollow loadbearing concrete masonry units

(5)

1294 ( .. 2530 )

.. 2511

. 572516 15 .. 2511

62 (.. 2516) .. 2511

31 .. 2516 . 572530

1 .. 2531

24 .. 2530

-1-

. 57-2530

1.

1.1

2.

2.1 (hollow concrete block or hollow concrete masonry unit)

75

2.2 (hollow loadbearing concrete masonry unit)

2.3 (faceshell) 2.4 (web)

3.

3.1 2

3.1.1 3.1.2

3.2 3

3.2.1

3.2.2 3.2.3

-2-

. 57-2530

4.

4.1 1

4.2 1 2 2

1 ( 4.1)

1) 5 . 109

2) 1 000

1) 1)

1

90 19 19 135

140 25 25 185

190 31 25 185

2)

-3-

. 57-2530

1 2 11/2 90 190 140

11/2 2 11/2 140 190 140

2 2 11/2 190 190 140

1 ( 4.2)

-4-

. 57-2530

1 2 2 90 190 190

11/2 2 2 140 190 190

2 2 2 190 190 190

1 ()

-5-

. 57-2530

1 2 3 90 190 290

11/2 2 3 140 190 290

2 2 3 190 190 290

1 ()

-6-

. 57-2530

1 2 4 90 190 390

11/2 2 4 140 190 390

2 2 4 190 190 390

1 ()

-7-

. 57-2530

2 ( 4.2)

100 10

5.

5.1 5.1.1

1 . 15 1

5.1.2 . 80

1 2 11/2 90 190 140

11/2 2 1

1/2 140 190 140

2 2 11/2 190 190 140

1 2 2 90 190 190

11/2 2 2 140 190 190

2 2 2 190 190 190

1 2 3 90 190 290

11/2 2 3 140 190 290

2 2 3 190 190 290

1 2 4 90 190 390

11/2 2 4 140 190 390

2 2 4 190 190 390

-8-

. 57-2530

5.2 . 566

5.3

6.

6.1 6.1.1

6.1.2

6.1.3 25 5

6.2

3 . 109

6.3 () 4

-9-

. 57-2530

3 ( 6.2)

1) .

4 ()( 6.3)

1) ( ASTM C 426) 12

2)

50

50 75 75

0.03 35 40 45

0.03 0.045 30 35 40

0.045 20 30 35

1)

( 5 )

2)

1) 1 680 1 681 1 761 1 841 1 921

1 760 1 840 1 920 2 000 2 000

5 5

7 5.5 14 11 240 224 208 192 176 160

7 5.5 - - 288 272 256 240 224 208

5 4 - - - - - - - -

5

-10-

. 57-2530

7.

7.1 (1) (2) (3)

7.2

8.

8.1

8.2 10

8.3

8.3.1 . 109

8.3.2

-11-

. 57-2530

.

1)

1)

1)

()