Note passing your mouse over any image posses the slideshow for you.
add handles to each side from the top.
Attach 4 pipes as shown to each fitting
Repeat step 3 till you have all 5 tiers set up.
for the top tier ( The bottom when flipped over) add 4 smaller pipes as shown to each fitting.
After all 4 pipes are attached as shown screw on loosely the flanges.
You can adjust the flanges for unlevel floors by turning clockwise or counter clockwise as needed.
You are done flip over and then attach the wall supports as shown in next slide.