build a floating deck . step 1: materials. 8 - 2x4x12 treated studs 30 - 5/4 x 6 x 12 treated lumber 10 - concrete deck piers minimum 2x4 stud steel reinforcements. galvanized 3 1/2'' . the ground that we picked for our floating deck was uneven so i had to play a little with cinder blocks and bricks to level the frame.