it will take 64 block, if the morter joints are all slightly larger than a half inch, and if you make use of the half blocks you create.
A concrete block is normally 8 inches high so that an 18 concrete block wall is 12 feet high.
A standard 8x8x16 2 core block contains about .25cf of open space
Assuming an 8 ft. high wall, it will require 912 block plus a wate and cutting factor of 20% (182) for a total of 1094.
A cinderblock is 8" by 16" if you include the mortar joints.You'll need to figure out how many square inches the cinder block is (8 X 16)and how many square inches the wall is. (1 square foot equals 12" x 12")Divide the size of the blocks into the size of the wall and that's how many blocks you'll need.You'll also need to start doing your own homework.Getting people to do it for you on-line is the same as cheating.
6ftx12in=72 dev. 8in tall block=9 , 8ft x12in.=96dev . 16in long =6 ,6x9=54 blocks
Strecher is the term for the common "field" block in a cmu wall.
If the wall is subjected to shear forces due to horizontal loading, it becomes a shear wall whether it is a masonry or a concrete wall.
if you're drilling through the drywall, and you hit a gap and then the bit won't go any further, you're probably drilling into a block wall. . .you need a masonry bit to drill into the block.
it's probably a block wall and it's solid concrete above the window and door openings try a masonry bit in your drill
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
Paint or Stucco
Usually copestone is used to form the sloping to course of a masonry wall. However if the client wants another type of stone, depending on how strong the wall has to be, there may be other possibilities.
A Cavity wall has a cavity or cavities within the wall. Examples are masonry, such as concrete block or brick with two separate wall layers separated by a continuous cavity, or a timber framed wall with a brick veneer separated by a continuous cavity. The cavity is often used as a drainage or ventilation space, reducing moisture transmission through the wall.
What types of movement joints are required in a concrete masonry wall
Copestones
mass of masonry built against a wall to strengthen it.
The Great Wall of China.