Wall and foundation drainage construction

A foundation wall construction comprising a footer, a drain tile extending along adjacent one margin of said footer,

• a wall on said footer and formed of hollow building blocks having openings in their upper and lower surfaces arranged vertically on said footer, the lowermost row of said building blocks having enlarged openings in the inner surfaces thereof that connect with the interiors of said hollow building blocks and form drainage openings adjacent and above said drain tile, said foundation wall forming part of a basement and said wall having inner and outer surfaces,
• a drain device comprising a covered member having a plurality of longitudinally enclosed drain slots formed in its lower surface positioned on a top portion of said footer and extending therebeyond substantially to said drain tile, said drain device having an end abutted against said inner surface of said blocks whereby the drain slots are in liquid flow communicable with the enlarged openings in the building blocks, said drain slots extending substantially perpendicular to the building blocks and the length of said drain device,
• a gravel fill over said drain tile and drain device and extending to said blocks, and
• a cement floor pad on said gravel fill.