| 摘要 |
A building construction block includes a body made of a rigid material and having a substantially rectangular-shaped main portion, a wedge-shaped offset portion formed integral with the main portion, a pair of opposite side surfaces, a bottom surface, a top surface, a front surface and a rear surface. The top surface and opposite side surfaces are defined on both the main and offset portions. The rear and bottom surfaces are defined on the main portion. The front surface is defined on the offset portion and extends in a generally inclined direction from the bottom surface to the top surface and away from the rear surface. A first part of the top surface on the main portion receives and supports a first building component over the main portion, while a second part of the top surface on the offset portion receives and supports a second building component over the offset portion. The body preferably has a pair of side grooves each formed in one of the opposite side surfaces and disposed between the main portion and the offset portion. The side grooves are provided for guiding placement and alignment of the first building component on the top surface over the main portion of the body. The body may alternatively have a top groove formed in the top surface between the main and offset portions of the body. The top groove is provided for guiding placement and alignment of the first building component on the top surface over the main portion of the body.
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