When the single slope length is less than 12M, the roof can not be set with transverse joints; when the slope length of one side is greater than 12M, transverse joints should be set between color steel plates. The transverse joints are generally overlapped along the water. To ensure the waterproof effect, a certain lap length must be met, and the length of the lap length is related to the roof slope. When the slope is less than or equal to 1 / 10, it should not be less than 300 mm; when the slope is greater than 1 / 10, it should not be less than 200 mm. The height of the lap joint should be staggered, and the waterproof sealant strip should be pasted between the upper and lower plates.

這樣不僅可有效防止?jié)B水，還可防止彩鋼板切口處氧化銹蝕。同時應(yīng)注意搭接處一般采用自攻螺釘固定在波峰位置。若設(shè)置在波谷上，必須要有可靠的防水措施。

This can not only effectively prevent water seepage, but also prevent oxidation and corrosion at the cut of color steel plate. At the same time, it should be noted that the lap joint is generally fixed in the wave crest position with self tapping screws. If it is set on the trough, reliable waterproof measures must be taken.

屋面低波彩鋼板用連接件直接與檁條連接，每波或隔一個波設(shè)置一個，但搭接波處必須設(shè)置連接件。屋面高波彩鋼板用連接件與固定支架連接，每波設(shè)置一個。另一種上下板連接方法是壓板擠緊法，在兩塊彩鋼板的上面和下面各設(shè)一塊與彩鋼板板型相同的鍍鋅鋼板，兩板間設(shè)防水密封條，用緊固螺栓將其緊密擠壓連接在一起。

Roof low wave color steel plate is directly connected with purlin by connectors, one for each wave or every other wave, but connectors must be set at overlapping wave. The roof high wave color steel plate is connected with the fixed support by connecting pieces, one for each wave. Another method of connecting the upper and lower plates is the pressing plate pressing method. A galvanized steel plate with the same type as the color steel plate is set at the top and bottom of the two color steel plates, and the waterproof sealing strip is set between the two plates, which are tightly squeezed together by the fastening bolts.

為避免板的長向搭接處引起漏水，也可將壓型板生產(chǎn)設(shè)備運現(xiàn)場安裝，軋制從屋脊到檐口的整張屋面板，邊軋制邊安裝，無需長向搭接，避免不必要的滲漏。通常情況下，選用長板不搭接更好，但在實際工程中發(fā)現(xiàn)，板過長時，由于溫度影響板的伸縮會引起螺孔擴張而產(chǎn)生滲漏;同時，由于板過長，在制造、運輸或施工過程中易損傷涂層，影響質(zhì)量。

In order to avoid water leakage caused by the long-term lap joint of the plate, the profiled plate production equipment can also be transported to the site for installation. The whole roof panel from the roof ridge to the cornice can be rolled and installed while rolling. There is no need for long-term lapping to avoid unnecessary leakage. In general, it is best to choose the long plate without overlapping, but it is found in the actual project that when the plate is too long, the expansion of screw hole will be caused due to the influence of temperature on the expansion of screw hole; at the same time, because the plate is too long, it is easy to damage the coating in the process of manufacturing, transportation or construction, and affect the quality.