1. Slat : for fire-protection & security
2. Bottom bar : kinds of finishing materials attached the bottom of shutter
3. Barrel shaft : pipe axis winding slat
4. Lintel : It is attached to the bottom of box or ceiling for finishing materials.
5. Shutter box : for blocking shaft winding parts
6. Shutter operator : the motor to move the shutter up and down by electric power
7. Push button switch : the control switch of the shutter operator
8. Guide rail : the rail to induce the slat of the shutter
9. Width : an opening’s width
10. Height : an opening’s height
11. Push roller : the roller to prevent bending of shutter slat
12. Limit switch : the switch to fix the position of top & bottom
13. Emergency switch : the device to prevent damage or loss during abnormal operation of shutter
1. Slat weight calculation method
kg = slat’s height(H, m) x slat’s width(W, m) x slat’s unit weight(kg/㎡) x 1.2
# slat’s height : slat length from the state rolled up to the center of the shaft rolled up
# slat’s width : the length of the slat’s max. width
2. Selection method
a. Please calculate ‘kg’ by ‘slat’s height’ & ‘slat’s width’ base on the Table 1.
b. Please select the shaft applicable to ‘kg’ & ‘slat’s width’ in the Table 1.
3. Slat Kinds
Model | Pitch | Thickness(mm) | Thickness of iron plate(mm) | kg/㎡ |
---|---|---|---|---|
A1 | 95 | 19.0 | 1.2 | 18.5 |
A1 | 94 | 20.0 | 1.6 | 24.5 |
A7 | 94 | 19.2 | 1.2 | 18.0 |
A7 | 94 | 19.6 | 1.6 | 24.0 |
A9 | 91 | 24.1 | 1.6 | 25.0 |
A12 | 119 | 35.0 | 1.8 | 28.0 |
A12 | 122 | 35.0 | 2.3 | 34.0 |
F8 | 77 | 20.0 | 1.6 | 23.7 |
4. Pipe shutter(single)
Model | P(mm) | ℓ(mm) | D(mm) | kg/㎡ |
---|---|---|---|---|
P-16 | 70 | 500 | 16 | 7 |
P-19 | 70 | 600 | 19 | 10 |
5. Pipe shutter(double)
Model | P(mm) | ℓ(mm) | D(mm) | kg/㎡ |
---|---|---|---|---|
P-16W | 70 | 500 | 12.7(inside), 16(outside) | 12 |
P-19W | 70 | 600 | 16(inside), 19(outside) | 17 |
6. Slat specification
Model | Pitch | Thickness | Thickness of iron plate | kg/㎡ |
---|---|---|---|---|
A1 | 72 | 19.2 | 1.2 | 18.0 |
A7 | 72 | 19.6 | 1.6 | 24.0 |
7. Slat kinds(steel)
8. The max. width as slat kinds by wind pressure
9. The method of calculating wind pressure
F= 9.375 X 10 squared. V squared F=wind pressure(kg/㎡) V=speed(m/sec.)
a. In case of the building inside, 20kg/㎡ wind pressure should be applied for finding the max. allowable inside width of the slat.
b. In case of the outside, the wind pressure should be calculated by the max. wind speed of the installed site and then please find the max. allowable inside width of the slat in the above table.
c. If the value you found is off the point, please pierce as many as being off the point.