| 摘要 |
A building unit having projections and receiving cavities, normally used for toys, which is adapted for constructing real walls and the like by positioning a reinforcing envelope around the surfaces of a block of foamed material, like polystyrene foam, which surfaces are devoid of projections and cavities. That envelope may be a metal sheet or a tube of resilient material and is preferably coated with a coating to give a brick-like aspect to the building unit. Also the provision of a circumferentially extending bevel, attributes to that aspect. |
