A standard 8x8x16 2 core block contains about .25cf of open space
20 lbs.
Depends on the type. Show Low Block charges $2.11 per block for terra split face.
Basic concrete block it 8x8x16 inches.
2700 8x8x16 block
1.125 sq ft in 1 block
I was always tought "One pallet of block equals one yard". There are 90, 8•8•16 block on a pallet.
2600 lbs
Really depends on what the block is. If it solid, 2 core, 3 core, lightweight, midweight, concrete? Is it split face, fluted or burmished? Alot of different factors in determining that anwser. Also it depends on where its made, every block plant makes them a little different. But for a general reference a regular Block weighs about 40 pounds.
Depends on which size block and type. A 8x8x16 (common size) thick blocks with heavy gravel mix and small 3 ports can average around 56 lbs. or as light as 28 pounds if hollow with lightweight mix. There are usually 108 8x8x16 blocks on a pallet. This gives you an approximate weight between 1.5-3 tons. That is between 3,000 and 6,000 pounds.
Light. Sorry, I don't mean to be flippant, but "lightweight" just isn't enough to answer this question. You're going to have to be more specific than "lightweight".
In America: 8x8x16 inches, This is the standard CMU: Concrete Masonry Unit There also the half blocks 8x8x8. Source: http://concreteblocksizes.blogspot.com/