I assume they are laid horizontally like other cinder blocks, but I do not know why masons would use an "A block" instead of the usual two chamber block.
A-blocks are cheaper than two chamber blocks, but I cannot guess what they are designed to do.
Get Help from Bob Vila
- Give-Aways & Offers
- Monthly Must Do's
- DIY Project Ideas
- Step-by-Step Guides
- Inspirational Photo Galleries