Deep vein thrombosis, or deep venous thrombosis, (DVT) is the formation of a blood clot (thrombus) within a deep vein, most commonly the legs. Nonspecific signs may include pain, swelling, redness, warmness, and engorged superficial veins.
Align with the centers of terminal posts. Now, dig the post holes (normally 6 wide and 18 to 24 deep) and set the line posts. Before concrete begins to set, adjust post height by carefully moving post up or down in footing. Top of line posts should be even with string; outside face approximately 1/4 inside.
I've seen that you should bury 1/3 to 1/2 of the above ground post height; so this would make our hole 1.5-2' deep with gravel below. I've also seen that the diameter of the hole for a 4x4 post should be 12.. which would make the radius 6.