after they realized that entire block walls would collapse in high winds when they didn't fill the cells around the window and door openings
not in most areas, but the best way to be sure is to call your local building inspector.but odds are they will say no. don't worry a well bult cinderblock foundation will bear enormous weight.
A masonry beam is more often called a "bond beam." This is where a block is cut or manufactured with a slot to lay down one or two pieces of rebar down inside the block horizontally. The blocks are filled with grout and this adds horizontal strength to the wall by tying the vertical cells that are filled with grout to the horizontal cells that are filled with grout, creating a grid making the wall much stronger. www.masonryworktools.com
French drain system consist of ditch filled with small stones and a small inclination
Most painters will use latex caulk. You can get silicone in a color to better match your brick but it is more expensive and harder to work with.
The centrifugal pump has to be filled with fluid before it can start to move fluid. They cannot suck fluid in by creating a vacuum in the pump chamber like some other types of pumps.
A blastocoele is the fluid-filled cavity in the blastula.
you get one for every cavity you have
A sinus is an air cavity in bone.
Mold
the bladder
The vacuole is a fluid-filled membrane-surrounded cavity located inside a cell
the cavity filled with grains of sand or clay.
A vesicle is a fluid, or air, filled cavity.
A blastocoel is the fluid-filled cavity in the blastula.
A blastocele is the fluid-filled cavity in the blastula.
The tympanic cavity.
1 hour depending on how big the cavity was. Bst to ask the dentist when you get it filled.