致使PC板材开裂的要素有许多，主要和板材的方案、选材、施工等方面的联络比较大。
Led to many PC plank crack elements, the main sheet and the methods, materials, construction and other aspects of the contact is larger.
假定方案不合理，选材不正确，或许是在施工的过程中没有做好一些很细节的方面，都会致使PC板材开裂。
Assume that plan is not reasonable, select material is not correct, may be in the process of construction was not well done some very details, will cause the PC board crack.
在PC板材的两头和外表涂上防水涂料，这么能够下降木材外表的蒸腾湿度，削减木材开裂的程度；
At the two ends of the PC board coated with waterproof coating and appearance, so can lower transpiration humidity appearance of wood, cut wood craze degree;
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