Ceiling installation mainly through the screw connection, the screw is not less than 8 cm, but the screw connection should not be too high, if the ceiling finish and floor height of more than 1 meter, and finally another welding conversion layer, the height of the layer if more than 2 meters, Double steel frame, steel frame conversion layer must take into account the space span, the span of the conversion layer should be increased to increase the steel model to reduce the sag index.After the conversion layer is best to put a few days after the time, so that the natural sagging steel in place after the GRG installation.When installing the ceiling GRG, the level of the middle part of the ceiling can be adjusted to about 5mm according to the experience value. After the GRG plate is installed, the steel frame will fall again after the steel plate, but the coefficient is not big, so it is solved by raising the middle level.As the GRG characteristics of the variable type, and the elasticity is better, so the installed GRG plate must be connected with a screw.
.Wall mounting (same as GRC dry installation)
.Seam processing :
1. Cracked paste deployment: Rafa caulking plaster + staple fiber (glass fiber) + retarder + water
2. Step: install the seam with caulking paste filled (can be divided into two fill), and then use the fiberglass mesh will be posted at the seam (fiberglass mesh must be used only before the bubble), paste the finished glass After the surface with a waterproof putty approved before entering the next surface treatment process.
.GRG Surface Treatment:
1.Latex paint
2. Fluorocarbon paint
3. Gold foil, silver foil, copper foil
4. gel coat
.Calculation formula for steel (conversion ratio)
1. Seamless steel pipe: (OD - wall thickness) * Wall thickness * 0.02456
2. Square steel: Perimeter * Wall thickness * 0.00785
3. equilateral angle: (width * 2 side thick) * side thick * 0.00795
4. Unequal angle iron: (long side width + short side width - side thick) * side thick * 0.00795
5. Channel I-beam: 0.00785 * Leg thickness [high + e (leg width - waist thickness]
6. Steel plate: 7.85 * Thickness