All right guys, this is my first post and I hope you can help me with a certain job right now. I have a couple questions about paver patios. This is one of my first projects of this type and size. I am installing a paver patio roughly 500 ft2 and a stacked stone wall 50'Lx2'Wx3'H. Excavated the area, compacted the soil, filled with 6" drainage gravel, then 1-2" granite dust. I sloped the surface grade in the general direction that I want the water to move. I am worried about a few pockets where water may accumulate under gravel (I'm not convinced that the grade is exactly right). The main question is, does the majority of the water on a paver patio move across the top of the brick surface, or does it get in the joints between the bricks that are filled with granite dust and move to ground level. It has been very wet lately in my area and I am having trouble laying the brick because of frozen ground in the morning and/or concerns about it being too wet. Also in general, will a patio settle if the subsurface gets wet during construction. Soils on this job are clay and water barely moves through them. Thanks for all the great information on this site.