71

... *

1- . ) ( .

.

2- : 2 3 4 5 :

* .

2- carcass3- Top cover layer4- Botton cover layer5- Side edge

1-:

.2-: .

.3-: .

4-:

.

72

3-

:1-

: 1 2 3

4 .2-:

: )PP( )EP(

)ST( . 3-:

: ... .

4- .

1 .

5- 1- 2-

3- 4-

5- 6-

7- .

1- Monpoly2- Douply3- Multiply 4- PVC & Rubber

.

6- 6-1-

:

0/5 m/s : 0/25 -0/63 m/s : 0/4 -1/6 m/s )(: 0/8 -

:

V= n x a /3600

:

V = )m/s( n = a = )m( = )kg(Q = )kg(

:

Q=3600PFV =V1PV

:F = Q/(3600PV)

V = Q/(PV) = 3600F

: Q = (t/h)

P= (t/m3) F= )m3( V= (m/s)V= 1 m/s )m3(

F :

73

( : .

F :

( :F= F1+F2

F1= 1/6 b12 tan x106

F2= 1/4 b12 sin cos x106 = 1/8 b

2

8 sin 2 x106

( : ) ( :

l: : : .

:- 400 :

b = 0.8 B

- 400 :b=0.9B50

B: . V2 F V1 F

K 2 . .

6-2-

3 .

6-3-

:

:

1-

)(

4PP) )-

2EP -

0/5TW 0/1SW

K 2-

(0)2468101214K10/9980/9950/9890/9810/9700/9570/942(0)1618202224262830K0/9240/9050/8830/8600/8350/8080/7800/705

K 3-

B))

4005006508001000120014001800

)(

90100135180250300350430100150225300400500600750

74

1 . 150

:QH+QV = c f L (q1+ q2) cos E + qrh + qrd

1:

2:

3:

f: :

f = f1k2

f1 0/018 0/023 k2 30 30 1 1/45

.c: 1/98 1/58

70 150 . )kP( :QH)kP( :QV

qrh: qrd: .

q1: q2:

.

Gr .

... QP . QH QV QP .

7- .

.

:CSN 1-

DIN 2- 3-