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Product description:
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PC/FRP wave plate installed correctly
A, wave type selection
1, such as PC/FRP lighting with wave plate, the PC/FRP color wave plate and steel specifications approximation.
2, such as wave with PC/FRP plate skylight, PC/FRP is consistent with wave plate choi steel specifications.
Note: (1) if the purlin span is too large, it may cause wave PC/FRP plate buckling deformation, cause leakage.
(2) the proposal chooses above 1 mm - 3 mm thickness.
Second, the purlin span
Third, lap
1, side lap ordinary color plate
Recommended PC/FRP wave plate above the caigang watts, article in PC/FRP pressure wave plate, color layering available stainless steel, aluminum alloy or steel. Bead width of about 30 mm, longitudinally ribbed, a thickness of 0.5 mm, or take it to add better support the Potomac.
2, sandwich composite wave plate
If the sandwich composite wave plate lap, screws and supporting the Potomac, in order to better fixed PC/FRP plate.
3, sandwich plate
Such as PC/FRP wave plate and sandwich plate lap, dig out the sandwich plate take it bubbles, the PC/FRP trapezoidal wave negative to positive.
4, longitudinal lap
General requirements longitudinal lap length > 300 mm, such as PC/FRP wave plate with the color steel plate wave type, the lap length should be > 500 mm
Four,
1, fixed nail head diameter should be more than 1.5 times larger than the screw shank diameter, and waterproof glue, don't nail head direct pressure plate, in order to reduce pressure.
2, the screw is too tight, otherwise may cause stress, board face local crack.
3, waterproof glue do not use PVC plastic pad or composition of asphalt waterproof tape; Sealant, must choose neuter glass glue, do not use acid gel.
4, the installation process, not fixed at both ends before they are fixed in the middle, should be fixed at one end and construction along the same direction, otherwise it will cause the intermediate stress concentration, make the products out of shape or craze.
5, due to the linear expansion coefficient of PC/FRP plate about six times greater than the metal material, so, must first good drill hole on the plate, to use self tapping screws, and tapping screw must be in the middle of the aperture, or caused by insufficient heat bilges cold shrink displacement and reserve tapping screws around the crack of PC/FRP plate or surface shrinkage deformation.
6, reserve calculation of expansion space; Expansion value = * length * maximum temperature linear expansion coefficient linear expansion coefficient of PC/FRP plate = 7 x 10 mm/mm / ℃ for example: the length of 1000 mm PC/FRP plate, such as the temperature difference between day and night with 30 ℃, it reserved expansion space must be at least 2.1 mm above. With 5 mm Φ tapping screw, for example, the PC wave plate drilling > 2.1 mm + 5 mm in diameter = 7.1 mm.
7, if under the wave plate add a layer of PC/FRP plate or the colourful tile, lower PC/FRP plate fixed place must add metal strips, or by the PC/FRP plate weight will cause drooping PC/FRP plate, lead to crack of screws around the PC/FRP plate.
Five, the clean
Pc/FRP wave plate surface dust, dirt generally start with a soft cloth or sponge stick neutral cleaner is wiped, reoccupy clear water is rinsed thoroughly.
Six, chemical corrosion
1, with wet cement surface, acid, alkaline material surface contact.
2, with benzene, gasoline, carbon tetrachloride, days that water, turpentine and other organic solvents or contain such elements of glue, paint in contact
size
The specifications of the PC board size:
General level PC board thickness * length * width: 0.5-15 mm * 1220 * 2440 mm
Engineering level of PC board thickness * length * width 20-200 mm * 630 * 1000 mm
