Easy formula to figure cinder blocks per sq yd?

[snoozy]

Is there some simple formula or rule of thumb on how many cinder blocks you need to build a sq yd of wall/area? I have no idea how many I need to collect to build my imagined goat shed/poultry house

[TnAndy]

Never figured it by the "square yd", though I guess one could.

I figure the wall length and multiply by 3/4 for the number of block per course.

Example: Your building is a rectangle 12' x 16'. The perimeter is 12+16+12+16 =56' 56' x3/4= 42 block per course.

A course is 8" high, so you'd need to know the height of the wall.

Say you want a foundation wall 48" high, and you're gonna run wood from there. 48/8= 6 courses of block

6 x 42 =252 block.......not allowing for any openings, nor any waste

[snoozy]

That's a good way to figure it. Thanks!

[Windy in Kansas]

Side face is roughly 8 inches by 16 inches yield 128 square inches, so a square yard of 1296 divided by 128 = 10.13 when slightly rounded.

Or the 128 divided by a square foot of 144 yields .8888 of square foot coverage per block.

[snoozy]

Okay, so about 10 blocks to the sq yd. That's another general rule of thumb to keep in my head. Good!

[CamM]

The way I learned it was multiply perimeter by height. There are 1.125 CMUs/sf, so multiply the sf to get the # of blocks. To get square yards just divide by 9.

[snoozy]

Yet another formula! Cool!

[columbia,sc]

I always figure a block per sq foot, might add or subtract 10% here and there due to the number of windows and doors.
WxH add up the total run of the walls combined = number of blocks.
Just like I figure 7 bricks per SQ foot.

[kvr28]

http://www.csgnetwork.com/concreteblockwallcalc.html