For a permanent fire pit consider adding a 3 to 4 inch steel drain pipe to the floor of your pit.
Air pipe for fire pit.
Fire pit airflow fluid dynamics i have a large firepit and i suspect my poor airflow is why i m having such a hard time getting fuel wood to stay lit.
A 1 inch layer of leveling sand.
Piping for gas fire pit want to install a gas fire pit that needs 250 000btu max and needs 3 5 7 w read more.
A 2 inch layer of paver base at the perimeter of the fire pit ring.
I was wondering if there is a difference between drilling many small vent holes 1 25 inch drill bit or making 2 large vent holes busting a few blocks out.
Concrete blocks on top of the paver base to form the ring.
A 12 inch deep gravel layer can provide sufficient drainage for many diy fire pits.
The installation for this in ground fire pit has several layers.
4 to 6 inches of paver base behind the blocks.
To work correctly the fire pit must have a constant supply of air.
A typical shower drain cover works well to keep debris out of the drain pipe.
I have 2 firestarters constructed in this manner and sometimes i have to obstruct some holes in order to slow down the flame.
Nice fire pit coolbeans.